ConwayLife.com

Posted: **July 21st, 2026, 8:56 pm**

Hippo.69 wrote: July 20th, 2026, 4:03 pm Modified copy from the 0e0p metacell thread where I need sending gliders forward close to the simkin gun (and I have plenty of time to wait)

Code: Select all

x = 3809, y = 3819, rule = LifeHistory
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x = 328, y = 332, rule = LifeHistory
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You can remove gliders destroying the speboe if required.

Nice, so when the extra debris blocking zero gliders is cleared away, there's a 5 glider recipe to reduce the gun back to a pi block, vs the 19 glider recipe we have now. I'll try to find a modification of the construction recipe that cleans up that extra debris from the start.

Posted: **July 22nd, 2026, 1:58 am**

russellsprouts wrote: July 21st, 2026, 8:56 pm Nice, so when the extra debris blocking zero gliders is cleared away, there's a 5 glider recipe to reduce the gun back to a pi block, vs the 19 glider recipe we have now. I'll try to find a modification of the construction recipe that cleans up that extra debris from the start.

... the salvo probably requires the beehive and block debrie so entire new simkin gun recipe would not be compatible ...
... for 0e0p metacell I prefere to have working oggca as early as possible ... which could delete debrie in the spare time, so slowing down the build of oggca does not help me, but of course it could help in other projects where there is no spare time.

I have added to my local version of ongoing.py arguments usefull for finishing partials ... required-prefix ... to filter output not containing info with given prefix, ... required ... to filter output not containing given exact infos (I have hardcodded required, but parsing the argument is the next step), ... ignored ... (to filter temporary simkin glider depending on simulate-gens).
The required and ignored are not reported in the output ... (info matching required-prefix (which is empty by default) is).

Posted: **August 2nd, 2026, 1:51 am**

I've been working on the tooling for oncoming glider gun construction, and there are some promising directions for more efficient construction.

sc90b5p120

This is the standard toolkit that we've been using. Testing on a 503 glider slow salvo recipe, it achieves gliders = 1572, duration = 200259, or 3.1 fast gliders and 400 gens per slow glider.

sc35b3p46 toolkit

With glider stream mergers based on the suppressed Scorbie splitter, you can insert a glider in front at 35 gens, or behind at 67 gens. If you line up a few in a row, you can allocate the gliders and send recipes with several minimum distance 35 gliders in a row. Testing on a 503 glider slow salvo recipe, it achieved gliders = 1801, duration = 103062 -- that's 3.6 fast gliders and 200 gens per slow glider. (You can also get similar results with sc43b3p46)

Sample of the arm running:

Code: Select all

x = 3881, y = 3905, rule = LifeHistory
62$81.2A$81.2A$93.A$67.2A22.3A$57.2A7.A.A13.2A6.A$57.2A7.A15.2A6.2A$
66.3A4$66.3A21.3A$57.2A7.A20.2A$57.2A7.A.A13.A4.2A$67.2A11.A.A4.A.A$
81.2A9$93.A$94.A$92.3A10$105.A$103.A.A$104.2A9$116.A$117.A$115.3A10$
128.A$126.A.A$127.2A9$139.A$140.A$138.3A10$151.A$149.A.A$150.2A9$162.
A$163.A$161.3A10$174.A$172.A.A$173.2A9$185.A$186.A$184.3A12$195.2A$
194.2A$196.A20$217.2A$217.A.A$217.A11$230.2A$230.A.A$230.A10$241.3A$
241.A$242.A17$262.A$261.2A$261.A.A11$274.2A$274.A.A$274.A7$283.2A$
282.2A$284.A17$301.3A$301.A$302.A11$316.A$315.2A$315.A.A13$329.3A$
329.A$330.A25$357.2A$356.2A$358.A7$366.2A$366.A.A$366.A12$380.2A$379.
2A$381.A27$409.2A$408.2A$410.A11$421.3A$421.A$422.A6$431.A$430.2A$
430.A.A19$451.2A$451.A.A$451.A8$462.A$461.2A$461.A.A9$472.2A$471.2A$
473.A7$480.3A$480.A$481.A15$499.A$498.2A$498.A.A11$512.A$511.2A$511.A
.A16$529.2A$528.2A$530.A7$538.2A$538.A.A$538.A12$552.2A$551.2A$553.A
18$571.3A$571.A$572.A12$585.3A$585.A$586.A14$601.3A$601.A$602.A21$
625.2A$624.2A$626.A11$637.3A$637.A$638.A6$647.A$646.2A$646.A.A17$666.
A$665.2A$665.A.A9$677.A$676.2A$676.A.A7$686.A$685.2A$685.A.A21$708.2A
$707.2A$709.A11$720.3A$720.A$721.A6$730.A$729.2A$729.A.A16$746.3A$
746.A$747.A7$756.2A$755.2A$757.A9$767.2A$766.2A$768.A7$776.2A$775.2A$
777.A15$792.3A$792.A$793.A7$802.2A$801.2A$803.A9$813.2A$812.2A$814.A
7$822.2A$821.2A$823.A16$841.A$840.2A$840.A.A9$852.A$851.2A$851.A.A7$
861.A$860.2A$860.A.A17$878.3A$878.A$879.A7$888.2A$887.2A$889.A7$897.
2A$896.2A$898.A7$906.2A$905.2A$907.A22$930.2A$929.2A$931.A7$939.2A$
939.A.A$939.A12$953.2A$952.2A$954.A17$971.3A$971.A$972.A11$986.A$985.
2A$985.A.A13$999.3A$999.A$1000.A20$1022.2A$1021.2A$1023.A9$1033.2A$
1032.2A$1034.A7$1042.2A$1041.2A$1043.A18$1062.2A$1062.A.A$1062.A12$
1076.2A$1075.2A$1077.A12$1090.2A$1090.A.A$1090.A18$1110.2A$1110.A.A$
1110.A8$1119.3A$1119.A$1120.A9$1131.2A$1130.2A$1132.A7$1140.2A$1140.A
.A$1140.A17$1158.3A$1158.A$1159.A7$1168.2A$1167.2A$1169.A9$1179.2A$
1178.2A$1180.A7$1188.2A$1187.2A$1189.A18$1208.2A$1208.A.A$1208.A12$
1222.2A$1221.2A$1223.A12$1236.2A$1236.A.A$1236.A15$1254.A$1253.2A$
1253.A.A8$1264.A$1263.2A$1263.A.A9$1273.3A$1273.A$1274.A7$1283.2A$
1283.A.A$1283.A19$1305.A$1304.2A$1304.A.A27$1333.2A$1333.A.A$1333.A8$
1342.3A$1342.A$1343.A16$1361.2A$1360.2A$1362.A15$1378.2A$1378.A.A$
1378.A7$1387.2A$1386.2A$1388.A13$1402.2A$1401.2A$1403.A10$1414.2A$
1414.A.A$1414.A16$1431.3A$1431.A$1432.A17$1451.2A$1450.2A$1452.A14$
1466.3A$1466.A$1467.A12$1480.3A$1480.A$1481.A23$1507.A$1506.2A$1506.A
.A8$1515.3A$1515.A$1516.A11$1530.A$1529.2A$1529.A.A18$1549.2A$1549.A.
A$1549.A12$1563.2A$1563.A.A$1563.A14$1579.2A$1579.A.A$1579.A21$1602.
2A$1602.A.A$1602.A7$1612.A$1611.2A$1611.A.A7$1621.A$1620.2A$1620.A.A
7$1630.A$1629.2A$1629.A.A17$1648.2A$1647.2A$1649.A27$1676.3A$1676.A$
1677.A7$1686.2A$1686.A.A$1686.A16$1704.2A$1703.2A$1705.A13$1719.2A$
1719.A.A$1719.A9$1730.2A$1730.A.A$1730.A15$1747.2A$1746.2A$1748.A16$
1766.A$1765.2A$1765.A.A9$1777.A$1776.2A$1776.A.A7$1786.A$1785.2A$
1785.A.A19$1805.3A$1805.A$1806.A8$1816.2A$1815.2A$1817.A8$1827.A$
1826.2A$1826.A.A7$1835.2A$1835.A.A$1835.A16$1853.2A$1853.A.A$1853.A
17$1873.A$1872.2A$1872.A.A14$1888.2A$1888.A.A$1888.A12$1902.2A$1902.A
.A$1902.A17$1922.A$1921.2A$1921.A.A13$1936.2A$1935.2A$1937.A9$1947.2A
$1946.2A$1948.A7$1956.2A$1955.2A$1957.A18$1977.A$1976.2A$1976.A.A9$
1988.A$1987.2A$1987.A.A7$1997.A$1996.2A$1996.A.A17$2015.2A$2015.A.A$
2015.A7$2025.A$2024.2A$2024.A.A9$2036.A$2035.2A$2035.A.A7$2045.A$
2044.2A$2044.A.A15$2061.2A$2061.A.A$2061.A7$2071.A$2070.2A$2070.A.A9$
2082.A$2081.2A$2081.A.A7$2091.A$2090.2A$2090.A.A15$2107.2A$2107.A.A$
2107.A8$2118.A$2117.2A$2117.A.A7$2126.2A$2126.A.A$2126.A12$2141.A$
2140.2A$2140.A.A16$2159.A$2158.2A$2158.A.A8$2169.A$2168.2A$2168.A.A9$
2178.3A$2178.A$2179.A7$2188.2A$2188.A.A$2188.A22$2212.2A$2211.2A$
2213.A11$2224.3A$2224.A$2225.A6$2234.A$2233.2A$2233.A.A17$2253.A$
2252.2A$2252.A.A9$2264.A$2263.2A$2263.A.A7$2273.A$2272.2A$2272.A.A28$
2302.2A$2301.2A$2303.A7$2311.2A$2311.A.A$2311.A12$2325.2A$2324.2A$
2326.A19$2346.2A$2345.2A$2347.A9$2357.2A$2356.2A$2358.A7$2366.2A$
2365.2A$2367.A20$2389.A$2388.2A$2388.A.A9$2400.A$2399.2A$2399.A.A7$
2409.A$2408.2A$2408.A.A16$2425.3A$2425.A$2426.A7$2434.3A$2434.A$2435.
A8$2445.2A$2444.2A$2446.A9$2456.2A$2456.A.A$2456.A19$2476.3A$2476.A$
2477.A9$2489.A$2488.2A$2488.A.A10$2499.3A$2499.A$2500.A20$2522.2A$
2522.A.A$2522.A16$2539.3A$2539.A$2540.A8$2550.2A$2549.2A$2551.A8$
2561.A$2560.2A$2560.A.A7$2569.2A$2569.A.A$2569.A16$2587.2A$2586.2A$
2588.A11$2600.2A$2599.2A$2601.A17$2620.A$2619.2A$2619.A.A8$2628.3A$
2628.A$2629.A11$2643.A$2642.2A$2642.A.A19$2664.A$2663.2A$2663.A.A11$
2676.2A$2676.A.A$2676.A7$2685.2A$2684.2A$2686.A31$2718.2A$2717.2A$
2719.A11$2730.3A$2730.A$2731.A6$2740.A$2739.2A$2739.A.A15$2756.2A$
2756.A.A$2756.A8$2767.A$2766.2A$2766.A.A9$2777.2A$2776.2A$2778.A7$
2785.3A$2785.A$2786.A15$2804.A$2803.2A$2803.A.A17$2821.3A$2821.A$
2822.A7$2831.2A$2831.A.A$2831.A9$2843.A$2842.2A$2842.A.A8$2851.3A$
2851.A$2852.A14$2869.A$2868.2A$2868.A.A20$2890.2A$2889.2A$2891.A7$
2899.2A$2899.A.A$2899.A12$2913.2A$2912.2A$2914.A21$2936.2A$2935.2A$
2937.A11$2948.3A$2948.A$2949.A6$2958.A$2957.2A$2957.A.A17$2977.A$
2976.2A$2976.A.A9$2988.A$2987.2A$2987.A.A7$2997.A$2996.2A$2996.A.A15$
3014.A$3013.2A$3013.A.A11$3027.A$3026.2A$3026.A.A21$3049.2A$3048.2A$
3050.A9$3060.2A$3059.2A$3061.A7$3069.2A$3068.2A$3070.A23$3095.A$3094.
2A$3094.A.A8$3103.3A$3103.A$3104.A11$3118.A$3117.2A$3117.A.A25$3145.A
$3144.2A$3144.A.A14$3159.3A$3159.A$3160.A9$3170.3A$3170.A$3171.A17$
3189.3A$3189.A$3190.A12$3203.3A$3203.A$3204.A14$3219.3A$3219.A$3220.A
19$3241.2A$3240.2A$3242.A11$3253.3A$3253.A$3254.A6$3263.A$3262.2A$
3262.A.A23$3288.A$3287.2A$3287.A.A11$3300.2A$3300.A.A$3300.A7$3309.2A
$3308.2A$3310.A26$3337.2A$3336.2A$3338.A7$3346.2A$3346.A.A$3346.A12$
3360.2A$3359.2A$3361.A22$3385.A$3384.2A$3384.A.A8$3394.2A$3393.2A$
3395.A14$3410.2A$3409.2A$3411.A10$3421.3A$3421.A$3422.A18$3443.A$
3442.2A$3442.A.A15$3459.2A$3458.2A$3460.A11$3472.2A$3471.2A$3473.A8$
3482.2A$3481.2A$3483.A19$3504.A$3503.2A$3503.A.A9$3515.A$3514.2A$
3514.A.A7$3524.A$3523.2A$3523.A.A19$3544.2A$3543.2A$3545.A9$3555.2A$
3554.2A$3556.A7$3564.2A$3563.2A$3565.A18$3584.2A$3583.2A$3585.A27$
3612.3A$3612.A$3613.A7$3622.2A$3622.A.A$3622.A16$3641.A$3640.2A$3640.
A.A18$3660.2A$3659.2A$3661.A7$3669.2A$3669.A.A$3669.A12$3683.2A$3682.
2A$3684.A21$3705.3A$3705.A$3706.A11$3719.2A$3719.A.A$3719.A19$3739.3A
$3739.A$3740.A14$3757.A$3756.2A$3756.A.A8$3767.A$3766.2A$3766.A.A9$
3776.3A$3776.A$3777.A7$3786.2A$3786.A.A$3786.A!

I also ran a search for 5 glider recipes with values [(1,2,3,5,6,7), 35-128, 35-128, 35-128, 67-128], and saved a database of all results which had a population of less than 32. The search space with low repeat times is very rich -- there are 80 million recipes. It includes, e.g., a clean recipe for every block lane +-40 from the recipe lane, and partials with extra debris around +-70. Even rarer objects like eaters exist at many offsets and orientations.

Tandem 19 toolkit

Two gliders on the same lane with a 19 tick delay on b6 allow for two unique "tee" reactions with an oncoming glider. The recipes "3, (34)" and "6, (32)" generate gliders of different colors in the same direction, so half of the possible gliders (bichromatic but monoparity) have a 1 glider recipe.

ElijahKen built a gun to generate the 19 tick pairs at p120

Code: Select all

x = 106, y = 86, rule = B3/S23
21bo$21b2o$21b2o$22bo2$19bo$18bobo3bo$18b2o3b2o42b2o$23bobo43bo$66bo$
67b2o23b2o$92b2o$12b2o5b2o49bo$12b2o5b2o48bobo$70b2o17b2o$16b2o71b2o$
16b2o80b2o$92b2o4bobo$92b2o5bo$57bo11b2o5b2o25b3o$39b2o15b2obo9b2o5b2o
24b3o$29bo3b2o4b2o16bob2o20b3o$28b2o4b3o21bo13b2o7b3o$27b2o8bo5b2o27b
2o7bo2bo$28b5o2bobo5b2o37b3o$30b3o3bo45b2o2$49b2o$49b2o2$45b2o5b2o$45b
2o5b2o3$81b2o$81b2o2$54bo29b2o$53bo30b2o$53b3o2$81b2o$81b2o$46bobo$47b
2o$31b2o14bo$32bo$29bo29bo$29b2o26b2o$23b2o33b2o$23b2o3$20b2o$20b2o10b
2o15bo$32b2o15bobo$23b2o24b3o$23b2o26bo6$21b2o2bo2$21bo3bo$21bo$22bobo
2$22b3o2$b3o$3o$6bo5b2o62bobo$5bobo4b2o63b2o$6b2o69bo$15b2o$15b2o65bo$
83bo$81b3o$12b2o$12b2o$85b2o$85bo$86b3o$88bo!

At sc90, which might be a good balance because the circuitry is much simpler, the costs for different gliders are uneven -- 90 gens for the good parities, 416 and 501 for the others, but the script will replace gliders with cheaper options when possible. The bad recipes are worse than standard p120 recipes -- it's more difficult to find recipes for tandem gliders because you need to consume a whole number of pairs, and many recipes allow a glider of the pair to escape.

With sc90 recipes, on the 503 glider slow salvo recipe it achieved: gliders = 964, duration = 122865. That's 1.9 fast gliders and 240 gens per slow glider.

Demo of it working:

Code: Select all

x = 5337, y = 5273, rule = LifeHistory
201$233.A$233.2A$233.2A$234.A2$231.A$230.A.A3.A$230.2A3.2A42.2A$235.A
.A43.A$278.A$279.2A23.2A$304.2A$224.2A5.2A49.A$224.2A5.2A48.A.A$282.
2A17.2A$228.2A71.2A$228.2A80.2A$304.2A4.A.A$304.2A5.A$269.A11.2A5.2A
25.3A$251.2A15.2A.A9.2A5.2A24.3A$241.A3.2A4.2A16.A.2A20.3A$240.2A4.3A
21.A13.2A7.3A$239.2A8.A5.2A27.2A7.A2.A$240.5A2.A.A5.2A37.3A$242.3A3.A
45.2A2$261.2A$261.2A2$257.2A5.2A$257.2A5.2A3$293.2A$293.2A2$266.A29.
2A$265.A30.2A$265.3A2$293.2A$293.2A$258.A.A$259.2A$243.2A14.A$244.A$
241.A29.A$241.2A26.2A$235.2A33.2A$235.2A3$232.2A$232.2A10.2A15.A$244.
2A15.A.A$235.2A24.3A$235.2A26.A6$233.2A2.A2$233.A3.A$233.A$234.A.A2$
234.3A2$213.3A$212.3A$218.A5.2A62.A.A$217.A.A4.2A63.2A$218.2A69.A$
227.2A$227.2A65.A$295.A$293.3A$224.2A$224.2A22$318.A.A$319.2A$319.A2$
324.A$325.A$323.3A24$348.A.A$349.2A$349.A2$354.A$355.A$353.3A24$378.A
.A$379.2A$379.A2$384.A$385.A$383.3A24$408.A.A$409.2A$409.A2$414.A$
415.A$413.3A24$438.A.A$439.2A$439.A2$444.A$445.A$443.3A24$468.A.A$
469.2A$469.A2$474.A$475.A$473.3A24$498.A.A$499.2A$499.A2$504.A$505.A$
503.3A24$528.A.A$529.2A$529.A2$534.A$535.A$533.3A24$558.A.A$559.2A$
559.A2$564.A$565.A$563.3A11$571.A$570.2A$570.A.A36$609.A$608.2A$608.A
.A25$635.2A$635.A.A$635.A35$673.A$672.2A$672.A.A26$701.A$700.2A$700.A
.A21$724.A$723.2A$723.A.A22$746.3A$746.A$747.A22$770.3A$770.A$771.A
22$795.2A$795.A.A$795.A62$860.A$859.2A$859.A.A22$882.3A$882.A$883.A
22$906.3A$906.A$907.A22$931.2A$931.A.A$931.A54$987.2A$987.A.A$987.A
25$1015.A$1014.2A$1014.A.A28$1045.A$1044.2A$1044.A.A22$1068.2A$1067.
2A$1069.A21$1090.3A$1090.A$1091.A27$1121.A$1120.2A$1120.A.A32$1155.A$
1154.2A$1154.A.A28$1185.A$1184.2A$1184.A.A24$1211.A$1210.2A$1210.A.A
36$1248.2A$1248.A.A$1248.A31$1281.2A$1280.2A$1282.A21$1304.2A$1304.A.
A$1304.A33$1339.2A$1339.A.A$1339.A53$1395.A$1394.2A$1394.A.A39$1435.
2A$1435.A.A$1435.A27$1465.A$1464.2A$1464.A.A22$1488.2A$1487.2A$1489.A
21$1510.3A$1510.A$1511.A32$1545.2A$1545.A.A$1545.A34$1581.2A$1581.A.A
$1581.A23$1607.A$1606.2A$1606.A.A22$1630.2A$1629.2A$1631.A21$1652.3A$
1652.A$1653.A32$1687.2A$1687.A.A$1687.A21$1710.2A$1709.2A$1711.A21$
1732.3A$1732.A$1733.A31$1767.A$1766.2A$1766.A.A31$1799.2A$1799.A.A$
1799.A51$1852.2A$1852.A.A$1852.A31$1885.2A$1884.2A$1886.A21$1908.2A$
1908.A.A$1908.A33$1943.2A$1943.A.A$1943.A52$1997.2A$1997.A.A$1997.A
35$2035.A$2034.2A$2034.A.A31$2067.2A$2067.A.A$2067.A43$2112.2A$2112.A
.A$2112.A31$2145.2A$2144.2A$2146.A21$2168.2A$2168.A.A$2168.A33$2203.
2A$2203.A.A$2203.A50$2255.2A$2255.A.A$2255.A27$2284.2A$2284.A.A$2284.
A31$2317.2A$2316.2A$2318.A21$2340.2A$2340.A.A$2340.A33$2375.2A$2375.A
.A$2375.A51$2429.A$2428.2A$2428.A.A28$2458.2A$2457.2A$2459.A22$2482.
2A$2482.A.A$2482.A40$2524.2A$2523.2A$2525.A23$2549.2A$2549.A.A$2549.A
63$2614.2A$2614.A.A$2614.A31$2647.2A$2646.2A$2648.A21$2670.2A$2670.A.
A$2670.A33$2705.2A$2705.A.A$2705.A53$2761.A$2760.2A$2760.A.A22$2785.A
$2784.2A$2784.A.A26$2813.A$2812.2A$2812.A.A28$2843.A$2842.2A$2842.A.A
35$2880.A$2879.2A$2879.A.A22$2902.3A$2902.A$2903.A22$2926.3A$2926.A$
2927.A22$2951.2A$2951.A.A$2951.A46$3000.A$2999.2A$2999.A.A22$3022.3A$
3022.A$3023.A22$3046.3A$3046.A$3047.A22$3071.2A$3071.A.A$3071.A41$
3115.A$3114.2A$3114.A.A28$3145.A$3144.2A$3144.A.A21$3168.A$3167.2A$
3167.A.A22$3190.3A$3190.A$3191.A22$3214.3A$3214.A$3215.A22$3239.2A$
3239.A.A$3239.A63$3305.A$3304.2A$3304.A.A22$3328.2A$3327.2A$3329.A21$
3350.3A$3350.A$3351.A33$3387.A$3386.2A$3386.A.A25$3413.2A$3413.A.A$
3413.A38$3453.2A$3453.A.A$3453.A25$3480.2A$3479.2A$3481.A22$3504.2A$
3504.A.A$3504.A40$3546.2A$3545.2A$3547.A23$3571.2A$3571.A.A$3571.A60$
3634.A$3633.2A$3633.A.A22$3656.3A$3656.A$3657.A22$3680.3A$3680.A$
3681.A22$3705.2A$3705.A.A$3705.A53$3761.A$3760.2A$3760.A.A22$3784.2A$
3783.2A$3785.A21$3806.3A$3806.A$3807.A25$3835.A$3834.2A$3834.A.A25$
3862.A$3861.2A$3861.A.A22$3884.3A$3884.A$3885.A22$3908.3A$3908.A$
3909.A22$3933.2A$3933.A.A$3933.A48$3983.2A$3983.A.A$3983.A37$4023.A$
4022.2A$4022.A.A32$4057.A$4056.2A$4056.A.A28$4087.A$4086.2A$4086.A.A
36$4125.A$4124.2A$4124.A.A25$4152.A$4151.2A$4151.A.A22$4174.3A$4174.A
$4175.A22$4198.3A$4198.A$4199.A22$4223.2A$4223.A.A$4223.A46$4271.2A$
4271.A.A$4271.A21$4294.2A$4293.2A$4295.A21$4316.3A$4316.A$4317.A32$
4351.2A$4351.A.A$4351.A27$4381.A$4380.2A$4380.A.A22$4404.2A$4403.2A$
4405.A21$4426.3A$4426.A$4427.A29$4459.A$4458.2A$4458.A.A27$4488.A$
4487.2A$4487.A.A22$4510.3A$4510.A$4511.A22$4534.3A$4534.A$4535.A22$
4559.2A$4559.A.A$4559.A31$4592.2A$4591.2A$4593.A21$4614.3A$4614.A$
4615.A26$4643.2A$4643.A.A$4643.A25$4671.A$4670.2A$4670.A.A30$4703.A$
4702.2A$4702.A.A22$4727.A$4726.2A$4726.A.A27$4755.2A$4755.A.A$4755.A
36$4794.A$4793.2A$4793.A.A22$4816.3A$4816.A$4817.A22$4840.3A$4840.A$
4841.A22$4865.2A$4865.A.A$4865.A48$4916.A$4915.2A$4915.A.A22$4938.3A$
4938.A$4939.A22$4962.3A$4962.A$4963.A22$4987.2A$4987.A.A$4987.A46$
5036.A$5035.2A$5035.A.A22$5058.3A$5058.A$5059.A22$5082.3A$5082.A$
5083.A22$5107.2A$5107.A.A$5107.A!

At sc43, it achieved gliders = 885, duration = 90945. That's 1.76 fast gliders and 180 gens per slow glider.

Code: Select all

x = 4753, y = 4657, rule = LifeHistory
200$274.A$274.2A$274.2A$275.A2$272.A$271.A.A3.A$271.2A3.2A42.2A$276.A
.A43.A$319.A$320.2A23.2A$345.2A$265.2A5.2A49.A$265.2A5.2A48.A.A$323.
2A17.2A$269.2A71.2A$269.2A80.2A$345.2A4.A.A$345.2A5.A$310.A11.2A5.2A
25.3A$292.2A15.2A.A9.2A5.2A24.3A$282.A3.2A4.2A16.A.2A20.3A$281.2A4.3A
21.A13.2A7.3A$280.2A8.A5.2A27.2A7.A2.A$281.5A2.A.A5.2A37.3A$283.3A3.A
45.2A2$302.2A$302.2A2$298.2A5.2A$298.2A5.2A3$334.2A$334.2A2$307.A29.
2A$306.A30.2A$306.3A2$334.2A$334.2A$299.A.A$300.2A$284.2A14.A$285.A$
282.A29.A$282.2A26.2A$276.2A33.2A$276.2A3$273.2A$273.2A10.2A15.A$285.
2A15.A.A$276.2A24.3A$276.2A26.A6$274.2A2.A2$274.A3.A$274.A$275.A.A2$
275.3A2$254.3A$253.3A$259.A5.2A62.A.A$258.A.A4.2A63.2A$259.2A69.A$
268.2A$268.2A65.A$336.A$334.3A$265.2A$265.2A22$359.A.A$360.2A$360.A2$
365.A$366.A$364.3A24$389.A.A$390.2A$390.A2$395.A$396.A$394.3A24$419.A
.A$420.2A$420.A2$425.A$426.A$424.3A24$449.A.A$450.2A$450.A2$455.A$
456.A$454.3A24$479.A.A$480.2A$480.A2$485.A$486.A$484.3A24$509.A.A$
510.2A$510.A2$515.A$516.A$514.3A24$539.A.A$540.2A$540.A2$545.A$546.A$
544.3A24$569.A.A$570.2A$570.A2$575.A$576.A$574.3A24$599.A.A$600.2A$
600.A2$605.A$606.A$604.3A11$612.A$611.2A$611.A.A36$650.A$649.2A$649.A
.A25$676.2A$676.A.A$676.A35$714.A$713.2A$713.A.A26$742.A$741.2A$741.A
.A21$765.A$764.2A$764.A.A10$776.2A$776.A.A$776.A62$841.A$840.2A$840.A
.A10$852.2A$852.A.A$852.A54$908.2A$908.A.A$908.A25$936.A$935.2A$935.A
.A28$966.A$965.2A$965.A.A22$989.2A$988.2A$990.A9$999.3A$999.A$1000.A
9$1012.A$1011.2A$1011.A.A32$1046.A$1045.2A$1045.A.A28$1076.A$1075.2A$
1075.A.A24$1102.A$1101.2A$1101.A.A23$1127.A$1126.2A$1126.A.A12$1140.
2A$1139.2A$1141.A18$1161.A$1160.2A$1160.A.A24$1187.A$1186.2A$1186.A.A
37$1226.A$1225.2A$1225.A.A39$1266.2A$1266.A.A$1266.A27$1296.A$1295.2A
$1295.A.A22$1319.2A$1318.2A$1320.A9$1329.3A$1329.A$1330.A14$1346.2A$
1346.A.A$1346.A34$1382.2A$1382.A.A$1382.A23$1408.A$1407.2A$1407.A.A
22$1431.2A$1430.2A$1432.A9$1441.3A$1441.A$1442.A14$1458.2A$1458.A.A$
1458.A21$1481.2A$1480.2A$1482.A9$1491.3A$1491.A$1492.A13$1508.A$1507.
2A$1507.A.A31$1540.2A$1540.A.A$1540.A34$1577.A$1576.2A$1576.A.A10$
1588.2A$1587.2A$1589.A26$1616.2A$1616.A.A$1616.A22$1639.3A$1639.A$
1640.A36$1678.2A$1678.A.A$1678.A35$1716.A$1715.2A$1715.A.A31$1748.2A$
1748.A.A$1748.A26$1777.A$1776.2A$1776.A.A10$1788.2A$1787.2A$1789.A26$
1816.2A$1816.A.A$1816.A22$1839.3A$1839.A$1840.A34$1876.2A$1876.A.A$
1876.A23$1901.2A$1901.A.A$1901.A29$1932.2A$1931.2A$1933.A15$1949.2A$
1948.2A$1950.A17$1967.3A$1967.A$1968.A49$2020.A$2019.2A$2019.A.A22$
2043.2A$2042.2A$2044.A9$2053.3A$2053.A$2054.A12$2069.A$2068.2A$2068.A
.A10$2080.2A$2080.A.A$2080.A46$2129.A$2128.2A$2128.A.A10$2140.2A$
2139.2A$2141.A26$2168.2A$2168.A.A$2168.A22$2191.3A$2191.A$2192.A37$
2232.A$2231.2A$2231.A.A22$2256.A$2255.2A$2255.A.A26$2284.A$2283.2A$
2283.A.A28$2314.A$2313.2A$2313.A.A35$2351.A$2350.2A$2350.A.A10$2362.
2A$2362.A.A$2362.A46$2411.A$2410.2A$2410.A.A10$2422.2A$2422.A.A$2422.
A41$2466.A$2465.2A$2465.A.A28$2496.A$2495.2A$2495.A.A21$2519.A$2518.
2A$2518.A.A10$2530.2A$2530.A.A$2530.A63$2596.A$2595.2A$2595.A.A22$
2619.2A$2618.2A$2620.A9$2629.3A$2629.A$2630.A15$2648.A$2647.2A$2647.A
.A25$2674.2A$2674.A.A$2674.A38$2714.2A$2714.A.A$2714.A21$2737.2A$
2736.2A$2738.A9$2747.3A$2747.A$2748.A10$2761.A$2760.2A$2760.A.A10$
2772.2A$2772.A.A$2772.A60$2835.A$2834.2A$2834.A.A10$2846.2A$2846.A.A$
2846.A53$2902.A$2901.2A$2901.A.A22$2925.2A$2924.2A$2926.A9$2935.3A$
2935.A$2936.A9$2947.2A$2946.2A$2948.A9$2957.3A$2957.A$2958.A15$2976.A
$2975.2A$2975.A.A25$3003.A$3002.2A$3002.A.A10$3014.2A$3014.A.A$3014.A
48$3064.2A$3064.A.A$3064.A37$3104.A$3103.2A$3103.A.A32$3138.A$3137.2A
$3137.A.A28$3168.A$3167.2A$3167.A.A36$3206.A$3205.2A$3205.A.A25$3233.
A$3232.2A$3232.A.A10$3244.2A$3244.A.A$3244.A46$3292.2A$3292.A.A$3292.
A21$3315.2A$3314.2A$3316.A9$3325.3A$3325.A$3326.A14$3342.2A$3342.A.A$
3342.A27$3372.A$3371.2A$3371.A.A22$3395.2A$3394.2A$3396.A9$3405.3A$
3405.A$3406.A11$3420.A$3419.2A$3419.A.A27$3449.A$3448.2A$3448.A.A10$
3460.2A$3460.A.A$3460.A31$3493.2A$3492.2A$3494.A9$3503.3A$3503.A$
3504.A9$3515.2A$3514.2A$3516.A9$3525.3A$3525.A$3526.A16$3544.2A$3544.
A.A$3544.A25$3572.A$3571.2A$3571.A.A30$3604.A$3603.2A$3603.A.A22$
3628.A$3627.2A$3627.A.A27$3656.2A$3656.A.A$3656.A36$3695.A$3694.2A$
3694.A.A10$3706.2A$3706.A.A$3706.A48$3757.A$3756.2A$3756.A.A10$3768.
2A$3768.A.A$3768.A44$3814.2A$3814.A.A$3814.A26$3842.2A$3842.A.A$3842.
A21$3866.A$3865.2A$3865.A.A40$3908.A$3907.2A$3907.A.A23$3933.A$3932.
2A$3932.A.A10$3944.2A$3943.2A$3945.A26$3972.2A$3972.A.A$3972.A22$
3995.3A$3995.A$3996.A25$4024.A$4023.2A$4023.A.A24$4049.2A$4048.2A$
4050.A21$4073.A$4072.2A$4072.A.A12$4086.2A$4085.2A$4087.A15$4103.2A$
4103.A.A$4103.A32$4138.A$4137.2A$4137.A.A22$4161.2A$4160.2A$4162.A9$
4171.3A$4171.A$4172.A14$4189.A$4188.2A$4188.A.A10$4200.2A$4200.A.A$
4200.A62$4264.2A$4264.A.A$4264.A22$4288.2A$4288.A.A$4288.A32$4322.2A$
4322.A.A$4322.A25$4350.A$4349.2A$4349.A.A22$4373.2A$4372.2A$4374.A9$
4383.3A$4383.A$4384.A14$4400.2A$4400.A.A$4400.A28$4431.A$4430.2A$
4430.A.A10$4442.2A$4442.A.A$4442.A!

I've pushed the improved compiler script to (the now inaccurately named) https://github.com/RussellSprouts/short ... 20_fast.py

Posted: **August 26th, 2026, 2:58 am**

russellsprouts wrote: August 2nd, 2026, 1:51 am

Nice work.

I would probably not be able to use it in 0e0p metacell project. The main problem of it is to maintaining the stream and use it on 8 ouptut paths
(with a constraint of 2^D long loop) ... so going under sc90 would be extremally difficult.
I am actually not that much limited by the ouptut glider frequency (actually I have to add waits occassionally as the arm often makes faster then "slow salvo gliders"), but rather by the glider lane distances.
For the glider pair OGGCA, I am aware how the long pushes would be efficient.

(With much faster "slow gliders" the agnosticize "marking minimal required distance" in the input files will be required.
As was mentioned the emission times vary a lot so we would probably require glider DAG (rather to glider "PATH") (still considering the same path of configurations after each slow glider reaction stabilises) recipes to get good enough performance.
When the recipe describes DAG would become complicated to encode (consider current b1997|b1998|b1999|b2000|b2001|b2002 b2006|b2007|b2008|b2009|b2010|b2011 glider pair in the recipe ... this probably corresponds to destroying two unwanted blocks ... so there are 36 edges in the DAG for this step in the recipe ... if exact lower bounds of glider phase distances should be presented ... of course in this case the salvo would be rather fast, we can define minimal OGGCA glider distance and report constraints only for slower pairs ... .)

So there is definitely much bigger cost of building the OGGCA, there will be equally cheap pulls and more efficient emissions, but the pushes would probably be much worse ... you would probably need to build anchors much more often ...

I do not think it would be used in smaller projects as well considering the OGCCA build costs should be compensated by much longer recipe it is used for. I can imagine faster OGGCA gun expecting faster input recipe in (silver) demenoid like ships where you mix several portions of one glider stream together.
Cheap gun would be helpfull (p60 Gosper with frequency halving?).

Posted: **September 19th, 2026, 8:50 pm**

I completed some deeper searches for the sc90b5p120 OGGCA:

All recipes up to 5 gliders with 90-255 as the delays
All recipes up to 4 gliders with 90-1024 as the delays with a total limit of 1024 gens

Code: Select all

$ uv run oncoming.py --subtree="1,3,5,6,7" --depth=5 --max-population=32 --n-gun-gliders=14 | grep -v 'too big'
$ uv run oncoming.py --subtree="1,3,5,6,7" --max-delay=1024 --depth=4 --max-population=32 --max-total-gens=1024 --n-gun-gliders=14 | grep -v 'too big'

The depth 5 search took about 3 days, and the depth 4 search took about 8 hours.

In both searches I only saved results with a population of 32 or less (not including escaping gun gliders).

In total, I have ~1.4 billion results and ~150Gb of data from the two searches (mostly the depth 5 one). I'm working on processing it into a useful database of recipes for different objects.

For example, here are clean recipes for all of LWSS variants -- two colors and 4 parities in each direction.

Code: Select all

    Down:
    1, 92, 90, 129, 132, (130) {total: 573} {consumed: 6} lwss(0,2,p0,c0)(-13,591)
    5, 151, 253, 90, 196, (105) {total: 795} {consumed: 7} lwss(0,2,p0,c1)(-4,831)
    3, 96, 102, 103, 145, 105, (180) {total: 731} {consumed: 7} lwss(0,2,p1,c0)(-13,959)
    3, 105, 210, 128, 131, (93) {total: 667} {consumed: 7} lwss(0,2,p1,c1)(-6,533)
    3, 230, 131, 104, 99, (90) {total: 654} {consumed: 5} lwss(0,2,p2,c0)(0,542)
    7, 136, 147, 94, (155) {total: 532} {consumed: 5} lwss(0,2,p2,c1)(3,1062)
    7, 182, 146, 102, 132, 109, 110, (90) {total: 871} {consumed: 7} lwss(0,2,p3,c0)(11,927)
    7, 164, 186, 98, 111, (90) {total: 649} {consumed: 5} lwss(0,2,p3,c1)(4,577)

    Up:
    1, 104, 93, 129, (90) {total: 416} {consumed: 4} lwss(0,-2,p0,c0)(-10,-1100)
    7, 148, 109, 152, 108, 90, (90) {total: 697} {consumed: 5} lwss(0,-2,p0,c1)(6,-945)
    1, 90, 221, 117, 154, (90) {total: 672} {consumed: 6} lwss(0,-2,p1,c0)(0,-550)
    5, 145, 91, 178, 103, (90) {total: 607} {consumed: 5} lwss(0,-2,p1,c1)(-4,-941)
    3, 96, 93, 232, 153, (90) {total: 664} {consumed: 6} lwss(0,-2,p2,c0)(-8,-900)
    1, 101, 118, 167, 94, 127, (90) {total: 697} {consumed: 5} lwss(0,-2,p2,c1)(7,-914)
    3, 93, 209, 103, 125, (90) {total: 620} {consumed: 5} lwss(0,-2,p3,c0)(-5,-571)
    5, 151, 233, 204, 151, (90) {total: 829} {consumed: 6} lwss(0,-2,p3,c1)(7,-480)
    1, 92, 154, 94, 143, 97, (90) {total: 670} {consumed: 5} lwss(0,-2,p3,c1)(-3,-946)

    Left:
    3, 230, 99, 92, 141, (90) {total: 652} {consumed: 6} lwss(-2,0,p0,c0)(-526,-8)
    3, 97, 185, 168, 155, 90, 104, (90) {total: 889} {consumed: 9} lwss(-2,0,p0,c1)(-871,-20)
    6, 94, 90, 99, 107, 101, 114, 91, (90) {total: 786} {consumed: 6} lwss(-2,0,p1,c0)(-973,23)
    1, 92, 233, 181, 198, (90) {total: 794} {consumed: 8} lwss(-2,0,p1,c1)(-813,-22)
    3, 219, 110, 91, 179, 90, (90) {total: 779} {consumed: 6} lwss(-2,0,p2,c0)(-894,-16)
    3, 93, 189, 151, 200, (90) {total: 723} {consumed: 5} lwss(-2,0,p2,c1)(-900,-3)
    7, 168, 154, 98, 106, 119, (90) {total: 735} {consumed: 6} lwss(-2,0,p3,c0)(-956,2)
    3, 195, 131, 107, 92, 150, 105, (154) {total: 934} {consumed: 9} lwss(-2,0,p3,c1)(-935,-8)

    Right:
    3, 96, 92, 107, 194, (90) {total: 579} {consumed: 5} lwss(2,0,p0,c0)(941,-13)
    3, 93, 118, 208, 125, 90, (90) {total: 724} {consumed: 6} lwss(2,0,p0,c1)(955,-4)
    1, 90, 109, 105, 100, (90) {total: 494} {consumed: 4} lwss(2,0,p1,c0)(995,-11)
    7, 164, 191, 105, 111, 119, (90) {total: 780} {consumed: 7} lwss(2,0,p1,c1)(887,-8)
    3, 105, 153, 118, 238, (90) {total: 704} {consumed: 5} lwss(2,0,p2,c0)(921,3)
    7, 202, 91, 101, 108, 114, 97, (90) {total: 803} {consumed: 7} lwss(2,0,p2,c1)(908,-3)
    7, 244, 167, 189, 188, (90) {total: 878} {consumed: 11} lwss(2,0,p3,c0)(661,-15)
    1, 91, 117, 96, 165, (120) {total: 589} {consumed: 6} lwss(2,0,p3,c1)(933,-16)

Code: Select all

x = 9097, y = 2881, rule = LifeHistory
239$261.A511.A511.A511.A511.A511.A511.A511.A511.A511.A511.A511.A511.A
511.A511.A511.A511.A$262.A511.A511.A511.A511.A511.A511.A511.A511.A
511.A511.A511.A511.A511.A511.A511.A511.A$260.3A509.3A509.3A509.3A509.
3A509.3A509.3A509.3A509.3A509.3A509.3A509.3A509.3A509.3A509.3A509.3A
509.3A28$291.A511.A511.A511.A511.A511.A511.A511.A511.A511.A511.A511.A
511.A511.A511.A511.A511.A$292.A511.A511.A511.A511.A511.A511.A511.A
511.A511.A511.A511.A511.A511.A511.A511.A511.A$290.3A509.3A509.3A509.
3A509.3A509.3A509.3A509.3A509.3A509.3A509.3A509.3A509.3A509.3A509.3A
509.3A509.3A28$321.A511.A511.A511.A511.A511.A511.A511.A511.A511.A511.
A511.A511.A511.A511.A511.A511.A$322.A511.A511.A511.A511.A511.A511.A
511.A511.A511.A511.A511.A511.A511.A511.A511.A511.A$320.3A509.3A509.3A
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.3D445.3D5.3D.3D5.3D.3D2.D6.3D.3D5.3D.3D.2D18$6115.A$2531.2A3581.2A
2558.3A$2530.2A1023.3A1535.A509.3A508.A.A2557.A$1508.3A509.3A509.A
1022.A1536.2A509.A3071.A$1508.A511.A1535.A1535.A.A509.A$1509.A511.A
5120.3A$7142.A$7143.A13$6647.A$4088.A2557.2A$4087.2A2557.A.A$4087.A.A
2$2043.2A3071.A$2043.A.A3069.2A$2043.A2561.2A508.A.A$4605.A.A1533.3A$
4605.A1535.A$6142.A1537.2A1022.2A$5633.2A2044.2A1022.2A$5633.A.A2045.
A1023.A$3075.2A2556.A$3075.A.A$3075.A$1030.2A$1029.2A$1031.A2$8203.A$
8202.2A$8202.A.A$7181.2A$7180.2A$7182.A4$1555.2A2046.2A$1554.2A512.2A
1532.2A$1556.A510.2A1535.A$2069.A3072.2A$5142.A.A2557.3A$5142.A1025.
2A1532.A1025.2A$6167.2A1534.A1023.2A$6169.A2559.A3$2589.2A$2589.A.A
1534.2A510.2A$1054.3A1532.A512.3A1020.2A510.2A$1054.A2047.A1024.A511.
A$1055.A2047.A5$6694.2A$6694.A.A$6694.A2$7211.A$7210.2A$7210.A.A3$
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2A$3126.A2558.2A2557.A.A$1077.3A2045.2A1024.A1533.A.A2556.A$1077.A
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3641.A1023.A2$1597.2A$1596.2A$1598.A$6721.A$6720.2A2047.2A$6720.A.A
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510.A$4178.A$5717.A$5716.2A$5716.A.A3$1113.2A$1112.2A$1114.A$6748.2A$
6748.A.A$6748.A4$3170.2A$3170.A.A5119.A$1635.3A511.A1020.A5120.2A$
1635.A512.2A6141.A.A$1636.A511.A.A5119.2A$7269.2A513.A$7271.A511.2A$
7783.A.A2$3690.3A2046.2A$3690.A2047.2A$3691.A2048.A2$4206.3A$4206.A$
4207.A4$4725.2A$4725.A.A$4725.A2$3192.3A$1658.2A1532.A3585.2A$1658.A.
A510.2A1020.A3583.2A$1658.A512.A.A510.2A4093.A$2171.A511.2A$2685.A2$
7807.3A$7807.A$7808.A13$4752.A$4751.2A$4751.A.A$8339.A$8338.2A$1684.
2A6652.A.A$1684.A.A$1684.A!
[[ MAXGRIDSIZE 14 ]]

I have partials for all MWSS variants as well, and about half of the HWSS variants. To complete the HWSS set, we can probably use this seed at various locations/trigger gliders:

Code: Select all

x = 25, y = 24, rule = B3/S23
2b2o$2b2o$7b2o$2b2o3b2o$bo2bo$bo2bo$2b2o14$21b2o$20b2o$22bo!

For other objects, for example, I immediately see clean block recipes for all lanes -39 to 44, and some others, without processing any partials. The furthest partial (and the furthest object in the results) is a block at l-108, which would make a nice starting block for slow salvo recipes.

Code: Select all

x = 556, y = 562, rule = LifeHistory
.A$2.A$3A28$31.A$32.A$30.3A28$61.A$62.A$60.3A28$91.A$92.A$90.3A28$
121.A$122.A$120.3A28$151.A$152.A$150.3A28$181.A$182.A$180.3A28$
211.A$212.A$210.3A28$241.A$242.A$240.3A28$271.A$272.A$270.3A28$
301.A$302.A$300.3A28$331.A$332.A$330.3A28$361.A$362.A$360.3A28$
391.A$392.A$390.3A11$397.2DE5.3D2.D2.3D6.D2.3D.D.D6.D2.3D.3D6.D2.
3D.3D$398.AE7.D.2D2.D7.2D2.D.D.D.D5.2D2.D.D.D.D5.2D2.D.D.D$397.DED
A4.3D2.D2.3D6.D2.D.D.3D6.D2.D.D.3D6.D2.3D.3D$399.D5.D4.D4.D6.D2.D.
D3.D6.D2.D.D.D.D6.D4.D3.D$397.3D5.3D.3D.2D6.3D.3D3.D5.3D.3D.3D5.3D
.3D.2D50$452.2A$452.A.A$452.A24$478.2A$478.A.A$478.A25$505.2A$505.
A.A$505.A47$554.2A$553.2A$555.A!

------------------------------

EDIT: I also found these adjustable recipes for placing far away blocks:

Code: Select all

# Recipes to place far away blocks using glider-LWSS collisions

# makes blocks at l-17 and l-25, d-15. The blocks and beehive form a LWSS seed.
let blocks(d-15) = 3, 101, 160, 99, 93, 114, 95, swim 7, (90) in
let beehive_o0(l-14,d-19) = 3, 112, 100, 93, swim 3, (90) in
let beehive_o1(l-15,d10) = 3, 93, 104, 387, swim 5, (90) in
let boat_o2(l-7,d15) = 5, 144, 144, 172, swim 4, (90) in

# glider(l-8)(ph1)(♗⬂①) and glider(l-9)(ph1)(♝⬁①)
# these are on the same diagonal, so the same boat works
# as a reflector for both
let activate(d0) = 5, 144, 107, 201, 130, swim 5, (90) in

# The upstream block has the glider upstream of the LWSS,
# so it is along the upstream edge of the arm.
# We can make the block further, must be a multiple of 4.
let $upstream_offset = 0 in

let block(l(0 - 142 - $upstream_offset),d0) =
    boat_o2(l-7,d-7)
    blocks(d(95 + $upstream_offset))
    beehive_o0(l-14,d(111 + $upstream_offset))
    activate(d(66 + $upstream_offset / 2))
in

# The downstream block has the glider downstream of the LWSS,
# so it is along the downstream edge of the arm.
# We can make the block further, must be a multiple of 4.
let $downstream_offset = 0 in

let block(l(0 - 128 - $downstream_offset),d(96 + $downstream_offset)) =
    beehive_o1(l-15,d2)
    blocks(d15)
    boat_o2(l-7,d(105 + $downstream_offset))
    activate(d(66 + $downstream_offset / 2))
in

block(l-142,d0)
block(l-128,d96)

This places a LWSS seed (two blocks and a beehive) and a boat, then uses a recipe which sends gliders in both directions to activate them at the same time. It can place blocks as close as l-128, and only limited by the length of the construction arm lane. This should be useful for placing elbow blocks for construction.

Code: Select all

x = 1818, y = 1827, rule = LifeHistory
13.3A17$2A$A.A$.A64.3A2$17.A6.2A38.A5.A$16.A.A5.2A38.A5.A$16.A.A45.A
5.A$17.A$34.A31.3A$9.2A23.3A$8.A.A26.A$9.A26.2A5$25.2A5.2A$25.2A5.2A
46.2A$79.A2.A$29.2A49.2A$24.A4.2A$5.2A16.A.A8.2A$5.2A16.A.A7.A2.A$24.
A7.2A$33.2A3.A13.2A$34.A4.A12.2A$37.3A$49.2A5.2A$49.2A5.2A$12.A$6.2A
3.A.A$5.A2.A2.2A$6.2A22$68.A$69.A$67.3A11$74.D2E6.D2.3D.3D6.D2.D.D.D.
D6.D2.D.D.D.D6.D2.3D.3D5.3D.D.D.3D6.D2.3D2.D7.D2.3D.3D5.3D.3D5.3D.3D
6.D3.D2.D.D5.3D.3D5.3D.3D.3D6.D3.D2.3D6.D2.3D.3D5.3D.3D5.3D.D.D5.3D.
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1595.A22$1619.2A$1619.A.A$1619.A49$1670.2A$1669.2A$1671.A34$1706.2A$
1705.2A$1707.A25$1732.3A$1732.A$1733.A48$1783.2A$1782.2A$1784.A30$
1816.A$1815.2A$1815.A.A!

Posted: **September 29th, 2026, 8:26 pm**

I ran some searches for better block push recipes. I was able to find a new push50 recipe that is almost twice as efficient as the known push44 recipe.

Code: Select all

# 24.68 gens/depth
let sc_push50 = 0, 126, 162, 175, 179, 111, 104, 91, 105, 91, (90) in

# 31.56 gens/depth
let sc_push34 = 0, 135, 93, 105, 126, 132, 92, 93, 116, 91, (90) in

# 47.89 gens/depth <----------------- the old simeks push 44 recipe, for reference
let sc_push44 = 0, 109, 90, 93, 91, 90, 95, 91, 91, 138, 157, 96, 90, 120, 91, 97, 107, 90, 90, 93, (188) in

# 52.33 gens/depth
let sc_push30 = 0, 126, 162, 175, 204, 198, 90, 101, 99, 129, 196, (90) in

# 58.52 gens/depth
let sc_push29 = 0, 126, 162, 175, 204, 198, 90, 116, 169, 133, 144, 90, (90) in

# 59.12 gens/depth
let sc_push24 = 0, 126, 162, 175, 204, 198, 90, 90, 103, 90, 91, (90) in

# 59.63 gens/depth
let sc_push19 = 0, 123, 121, 109, 255, 154, 100, 91, 90, (90) in

# 75.50 gens/depth
let sc_push20 = 0, 126, 162, 175, 204, 184, 163, 116, 95, 105, 90, (90) in

# 91.94 gens/depth
let sc_push18 = 0, 126, 162, 175, 204, 198, 90, 90, 123, 96, 92, 91, 118, (90) in

# 93.89 gens/depth
let sc_push18 = 0, 126, 162, 175, 204, 198, 90, 116, 169, 133, 137, 90, (90) in

# 105.85 gens/depth
let sc_push13 = 0, 108, 110, 138, 110, 91, 91, 191, 90, 91, 155, 111, (90) in

# 130.00 gens/depth
let sc_push6 = 0, 126, 162, 175, 135, 92, (90) in

Code: Select all

x = 5537, y = 1049, rule = LifeHistory
184$248.2D126.2D126.2D126.2D$248.2D126.2D126.2D126.2D2$1019.2D$1019.
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A$4534.A256.2A126.2A$4791.A.A125.A.A11$4420.2A$1350.A3068.2A$1349.2A
3070.A$1349.A.A2815.2A$1480.2A2557.3A125.A.A509.3A$1480.A.A2556.A127.
A511.A$1480.A2559.A639.A4$4557.3A$4557.A$4558.A3$1618.3A125.3A125.3A
125.3A125.3A125.3A125.3A125.3A125.3A125.3A125.3A125.3A125.3A125.3A
125.3A125.3A125.3A125.3A125.3A894.2A$1618.A127.A127.A127.A127.A127.A
127.A127.A127.A127.A127.A127.A127.A127.A127.A127.A127.A127.A127.A896.
A.A$1619.A127.A127.A127.A127.A127.A127.A127.A127.A127.A127.A127.A127.
A127.A127.A127.A127.A127.A127.A895.A130.A$4949.2A$4949.A.A7$4190.2A
254.2A$4189.2A255.A.A$4191.A254.A3$1380.A$1379.2A$1379.A.A127.2A3069.
3A$1509.A.A3068.A$1509.A3071.A2$4073.2A638.2A$4072.2A638.2A$4074.A
639.A10$4468.3A$4468.A$4469.A3$1402.2A$1402.A.A3199.A$1402.A3200.2A$
4603.A.A5$1538.2A$1537.2A$1539.A127.3A$1667.A128.3A$1668.A127.A128.3A
126.2A$1797.A127.A127.2A127.3A126.2A$1926.A128.A126.A127.2A128.2A127.
A$2183.A128.A127.A.A125.2A127.2A$2440.A127.A.A126.A.A125.3A$2697.A
127.A130.A1790.2A$2826.A128.2A1790.A.A$2955.A.A127.2A1022.2A636.A$
3085.A.A1020.2A$3085.A128.3A126.2A765.A$3214.A128.A.A126.2A$3215.A
127.A127.2A127.3A126.2A127.A$1427.A2045.A126.A128.A.A125.2A127.2A$
1426.2A2173.A127.A127.A.A126.A.A$1426.A.A2557.A4$1561.A$1560.2A3071.
2A$1560.A.A3069.2A$4634.A7$4769.3A$4132.A636.A$4131.2A637.A$4131.A.A
8$1453.2A$1453.A.A$1453.A21$1475.3A$1475.A$1476.A20$1498.2A$1498.A.A$
1498.A21$1522.A$1521.2A$1521.A.A!

Also this 5 glider block delete recipe which I think is known:

Code: Select all

x = 134, y = 140, rule = LifeHistory
7$6.2C$6.2C3$6.3A$6.A$7.A29$39.A$38.2A$38.A.A33$72.3A$72.A$73.A23$99.
A$98.2A$98.A.A21$121.2A$120.2A$122.A!

I ran snark.py to find recipes which leave stable ash of at most population 32. At each step, I processed about 20 million recipes before moving to the next. To setup the next search, I took the best results by depth (how deep the closest part of the ash is) and best results by far_depth (how deep the furthest part of the ash is), then continued with those as starting points. After 4 steps, I collected all the results from all steps with population >= 4 and <= 12 to see if any of them were SPEBOEs.

In the limit, the sc_push50 recipe is about 4x slower than a corderpush, and 12x slower than a crabstretcher.

Maybe we can still find an alternate way to clean up the BLSE to get a c/12 (6 gens/depth) push recipe with less overhead than a corderpush. (This stabilization works at sc64 only).

Code: Select all

x = 87, y = 70, rule = LifeHistory
16$22.3A$23.A$23.A2.A19.2A.2A3.2A.2A$23.A2.A18.A5.A.A5.A$24.A.A23.2A.
2A$39.2A7.A7.A$39.2A4.A2.A.2A.2A.A2.A$46.A3.A3.A3.A$47.2A.2A.2A.2A$
23.A24.A2.A.A2.A$22.A.A24.A.A.A.A$23.A26.A3.A$40.A22.A$40.A21.A.A$21.
4A38.A$21.2A3.A13.A$22.A4.A11.A.A$24.A.2A11.A20.A$25.A15.2A3.3A10.A.A
$42.A3.A12.A2.A$39.3A5.A11.A2.A$40.2A17.2A2.A$37.A20.A4.A$37.2A15.3A.
2A3.A$37.2A21.3A$27.2A6.2A$27.2A4.2A$33.2A.A13.A6.2A$35.2A12.A.A$48.A
3.A8.2A$47.A3.A8.A2.A$46.A3.A10.A.A2.2A$45.A3.A7.A4.2A2.2A$35.2A9.A.A
7.A.A$35.2A10.A9.A$62.2A2$61.A3.A$60.A4.A$59.A.A.A$58.A.A.A$56.A4.A$
56.A3.A2$58.2A!

Posted: **September 30th, 2026, 1:40 am**

russellsprouts wrote: September 29th, 2026, 8:26 pm I ran some searches for better block push recipes. I was able to find a new push50 recipe that is almost twice as efficient as the known push44 recipe.
[...]

Great work! Now I have to recompile all my work on the SSRRO T^T

russellsprouts wrote: September 29th, 2026, 8:26 pm Also this 5 glider block delete recipe which I think is known:
Code: Select all
x = 134, y = 140, rule = LifeHistory
7$6.2C$6.2C3$6.3A$6.A$7.A29$39.A$38.2A$38.A.A33$72.3A$72.A$73.A23$99.
A$98.2A$98.A.A21$121.2A$120.2A$122.A!

It actually isn't in https://gitlab.com/apgoucher/slmake/-/b ... type=heads, so it could be new, but that might not be up-to-date.

Posted: **October 2nd, 2026, 2:30 pm**

I found adjustable block pull recipes based on this reaction, which turns a b4 glider into a SPEBOE:

Code: Select all

x = 35, y = 40, rule = LifeHistory
.A$2.A$3A11$8.3D5.3D.3D$10.DA4.D.D.D.D$10.EA4.3D.D.D$9.DA.A5.D.D.D
$9.D6.3D.3D20$33.2A$32.2A$34.A!

That's an oncoming glider with a 4 cell offset. I used oncoming.py with --n-gun-gliders=1 to try each offset for recipes that result in an elbow block, and this was the only one I found with a recipe within 3-4 gliders. However, I only checked for blocks, there might be a recipe that gives another SPEBOE.

Then, I used snark.py to find recipes that cleanly create that backward glider on both sides. I used the same trick of passing the recipe through a snark that I described in https://conwaylife.com/forums/viewtopic ... 0&start=50, so that we can detect the correct backwards glider by how it destroys the snark.

Here are the recipes. The first is the known long pull recipe, which uses a b5 glider (found at https://conwaylife.com/forums/viewtopic ... 947#p64947). The new recipes can do a block pull of 26+ even, or 37+ odd, and should be more efficient than any options in slmake's simeks/pp.txt. There's also some options for even pulls with block duplication.

Code: Select all

x = 1712, y = 936, rule = LifeHistory
1390.3D.D3.D.3D.D.D.3D.3D.D.D5.3D.D3.D.3D.D.D.3D5.D.D.3D5.3D.D.D$
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1191.3D.D3.D.3D.D.D.3D5.3D.3D4.3D.D3.D.3D.D.D.3D5.3D.3D5.3D.D.D117.D.
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1193.D.2D.2D.D.D.D.D.D9.D3.D4.D.D.2D.2D.D.D.D.D.D7.D3.D.D7.D.D.D117.D
.D.D3.D.D.D.D.D.D5.D3.D5.D.D.D3.D.D.D.D.D.D9.D.D7.D3.D.D$1193.D.D.D.D
.D.D.D.D.3D.3D.3D3.D4.D.D.D.D.D.D.D.D.D.3D.3D.3D.3D.3D.3D2.D118.3D.D
3.D.3D2.D2.3D.3D3.D5.3D.D3.D.3D2.D2.3D7.D.3D5.3D.D.D$1192.D2.D3.D.D.D
.D.D.D9.D2.D5.D.D.D3.D.D.D.D.D.D9.D.D.D5.D3.D.D$1192.D2.D3.D.3D2.D2.
3D5.3D2.D5.3D.D3.D.3D2.D2.3D5.3D.3D5.3D.D.D6$556.3D.D3.D.3D.D.D.3D5.
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.D.D9.D.D9.D.D.D243.D.2D.2D.D.D.D.D.D9.D3.D7.D.D.D$556.D.D.D.D.D.D.D.
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.D.D10$1198.2C198.2C$1198.2C2.3E6.D2.3D.3D6.D2.3D.3D5.3D.3D5.3D.3D6.D
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.D.D4.D.D.D.D3.D2.D.D.D.D2.D$2C2.3E6.D2.3D.3D5.3D.3D5.3D.3D5.3D2.D6.
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1196.A$145.A$146.A14$1563.A$1562.2A$1562.A.A2$722.2A286.2A$722.A.A
285.A.A$168.2A552.A287.A357.2A$168.A.A1196.2A$168.A1200.A19$744.3A$
744.A289.2A$745.A288.A.A$1034.A$193.2A$193.A.A$193.A3$1398.2A$1397.2A
$1399.A6$1605.3A$1605.A$1606.A8$215.3A554.2A$215.A556.A.A$216.A555.A
4$1422.2A$1422.A.A$1422.A5$1630.A$1629.2A$1629.A.A7$238.2A$238.A.A
554.2A$238.A555.2A$796.A$1086.2A$1086.A.A$1086.A$1444.3A$1444.A$1445.
A17$1665.A$1664.2A$1664.A.A$824.A$823.2A287.2A$823.A.A285.2A$1113.A5$
274.3A$274.A$275.A10$1688.A$1687.2A$1687.A.A3$1135.3A$1135.A$1136.A4$
297.3A$297.A$298.A10$1710.2A$1709.2A$1711.A$869.2A$868.2A288.2A$870.A
287.A.A$1158.A4$320.2A$320.A.A$320.A13$892.A$891.2A$891.A.A6$342.3A$
342.A$343.A23$369.A$368.2A$368.A.A21$391.2A$390.2A$392.A21$413.3A$
413.A$414.A20$437.A$436.2A$436.A.A38$475.3A$475.A$476.A20$499.A$498.
2A$498.A.A21$521.2A$520.2A$522.A37$560.2A$560.A.A$560.A21$582.3A$582.
A$583.A32$617.2A$617.A.A$617.A21$640.2A$639.2A$641.A20$663.A$662.2A$
662.A.A21$685.2A$684.2A$686.A21$708.2A$707.2A$709.A21$730.3A$730.A$
731.A34$768.A$767.2A$767.A.A21$790.2A$789.2A$791.A21$812.3A$812.A$
813.A20$835.2A$835.A.A$835.A39$877.A$876.2A$876.A.A31$908.3A$908.A$
909.A!

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