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: https://youtu.be/ONdgXYEBihA
More Sophie on Numberphile: https://bit.ly/Sophie_Numberphile

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

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

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