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Game of SIM

Game of SIM 1969

Design Gustavus J. Simmons Publisher (Public Domain)
4.9 /10
BGG rating
1.3
Weight
2
Players
2
Best at
2
Minutes
0
Age
Game page · 0 prints BoardGameGeek

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About the Game

The Game of Sim is a paper and pencil game played by two players, Red and Blue, using six dots ('vertices') arranged in a hexagon. Players alternately draw a line between two dots. The first player to draw a triangle of their color between three dots loses.

The game cannot end in a tie. 15 moves is the maximum. If the game actually lasts 15 moves then the loser will actually complete two triangles at once!

Simmons, Gustavus J. "The game of SIM," J. Recreational Mathematics, 2(2), 1969, pp. 66.

Gardner, M. Mathematical Games, Scientific American, February (1973), pp. 108-112

E. Mead, A Rose, C, Huang, The Game of SIM: A Winning Strategy for the Second Player, Mathematical Report No. 58, 1973, McMaster University.

L.E.Shader, Another Strategy for SIM, Mathematics Magazine, Vol. 51. No. 1, pp. 60-62, 1978.

Filed Under

Categories
Abstract Strategy
Mechanics
Paper-and-Pencil
Also known as
Sim
BGG ratings
14
BGG data
refreshed Sep 5, 2026