Eraser for 1st grade online puzzle

3x3 - 9 pieces4x4 - 16 pieces5x5 - 25 pieces6x5 - 30 pieces8x7 - 56 pieces9x8 - 72 pieces10x9 - 90 pieces11x10 - 110 pieces12x11 - 132 pieces14x12 - 168 pieces15x13 - 195 pieces24x21 - 504 pieces Start a new game

By arranging these puzzles, you show us that they are worth showing to more visitors. Until they become more popular, they are partially hidden.

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9