Puzzles
Fit the pieces
Place pieces so there are no gaps. 11 works
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Pentomino
Fill the board with all 12 pieces, no gaps.
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Tetromino Tiling
Fill shapes with four-square pieces — some just can’t be done.
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Tangram
Seven pieces, one silhouette to match.
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Four Colored Cubes
Stack four cubes so every side of the tower shows all four colors.
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Cube Nets
Build a six-square shape and fold it. Find all 11 that make a cube.
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Count the Blocks
A pile of blocks seen at an angle. How many in all, hidden ones included?
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Paper Punch
Punch a hole in folded paper. Where are the holes when it is opened?
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The Mutilated Chessboard
Can dominoes cover a board with two corners missing?
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L-Tile Covering
Cover a board with one square missing, using L-shaped tiles.
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T-Puzzle
Four pieces, one letter T.
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Pythagoras on the Move
Cut two squares and rearrange them into the square on the hypotenuse.