M before P and B online puzzle

3x4 - 12 pieces4x7 - 28 pieces5x7 - 35 pieces6x8 - 48 pieces7x10 - 70 pieces8x11 - 88 pieces8x12 - 96 pieces9x13 - 117 pieces11x15 - 165 pieces12x17 - 204 pieces19x27 - 513 pieces Start a new game

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