white and red concrete building online puzzle

2x2 - 4 pieces3x3 - 9 pieces5x5 - 25 pieces7x7 - 49 pieces9x8 - 72 pieces10x9 - 90 pieces11x10 - 110 pieces12x11 - 132 pieces13x12 - 156 pieces15x14 - 210 pieces23x22 - 506 pieces33x31 - 1023 pieces Start a new game

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