Hartmut Holzwart

Hartmut Holzwart
Born	September 16, 1963
Residence	Munich
Nationality	German
Institutions	Unknown
Alma mater	Unknown

Hartmut Holzwart is a Life enthusiast who has made many notable discoveries, mostly relating to extensible spaceships.

He found the first spacefiller in September 1993, following a suggestion by Alan Hensel. He also found the first non-monotonic spaceship as well as several extensible spaceships including barge and wing.

He has constructed the vast majority of known greyships; extensible spaceships whose bodies are made up of an agar of density 1/2.

He also found the first c/4 diagonal puffer, the first c/4 diagonal period 12 spaceship, and the first c/2 orthogonal period 28 spaceship (with the help of Alan Hensel).

He constructed the first known wickstretcher, wickstretcher 1 with the help of Dean Hickerson, and later found the first c/4 diagonal wickstretcher, boatstretcher 1.

Patterns found by Hartmut Holzwart

2

• 233P3H1V0

3

• 35P4H1V1
• 37P4H1V1.2
• 38P4H1V1.1
• 38P4H1V1.2
• 39P4H1V1

5

• 56P6H1V0

7

• 70P2H1V0.1
• 70P5H2V0
• 77P4H1V0.1

B

• B29
• Barge (spaceship)
• Barge 2 (spaceship)
• Big A
• Boatstretcher 1
• Bracket pulsar

C

• Cross 2

H

• Hammerhead
• Hivenudger
• Hivenudger 2

N

• Non-monotonic spaceship 1

O

• Orion

S

• Sidecar
• Sparky
• Star

U

• Unnamed tagalong 23P4H2V0

W

• Wickstretcher 1
• Wing (spaceship)

X

• X66

References

• "Game of Life Status page". Retrieved on April 20, 2009.