Knock knock puzzle online puzzle

4x4 - 16 pieces5x5 - 25 pieces7x6 - 42 pieces8x7 - 56 pieces9x8 - 72 pieces10x9 - 90 pieces11x10 - 110 pieces12x11 - 132 pieces14x12 - 168 pieces15x13 - 195 pieces16x14 - 224 pieces17x15 - 255 pieces18x16 - 288 pieces19x17 - 323 pieces21x18 - 378 pieces22x19 - 418 pieces23x20 - 460 pieces Start a new game Create a multiplayer game table

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