Chemistry online puzzle

4x5 - 20 pieces5x6 - 30 pieces6x7 - 42 pieces7x8 - 56 pieces8x9 - 72 pieces9x10 - 90 pieces10x11 - 110 pieces11x12 - 132 pieces12x13 - 156 pieces13x14 - 182 pieces14x15 - 210 pieces15x16 - 240 pieces16x17 - 272 pieces17x18 - 306 pieces18x19 - 342 pieces19x20 - 380 pieces20x21 - 420 pieces Start a new game Create a multiplayer game table

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