Uploaded January 2025 | Updated September 2026, 2 weeks ago

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Sophie Maclean explains Animal Tic-Tac-Toe - and why the Snakey hexomino is the only "unsolved" creature. More links & stuff in full description below ↓↓↓

Sophie's previous polyominoes video: youtu.be/ONdgXYEBihA
More Sophie on Numberphile: bit.ly/Sophie_Numberphile

Sophie Maclean is based at Kings College, London: sophiethemathmo.wordpress.com

Tic-Tac-Toe with Xs only - youtu.be/ktPvjr1tiKk
Three board Tic-Tac-Toe - youtu.be/h09XU8t8eUM

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