osseous system online puzzle

3x3 - 9 pieces5x6 - 30 pieces6x7 - 42 pieces8x9 - 72 pieces9x10 - 90 pieces10x11 - 110 pieces11x12 - 132 pieces12x13 - 156 pieces13x15 - 195 pieces21x24 - 504 pieces Start a new game

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