Piece Arrangement

A classic sliding puzzle: fifteen numbered tiles and one blank in a 4×4 frame; slide tiles into the blank until they read 1–15 in order.

A Nikoli logic puzzle: place bulbs so every white cell is lit, no bulbs shine on each other, and numbered walls have the required adjacent bulbs.

Place the whole fleet so each row and column holds the number of ship cells shown; ships may not touch, even diagonally.

A mechanical puzzle of linked rings on a handled bar: following two simple rules, take the rings off one by one, or put them back on. The classic nine-ring set takes hundreds of moves.

Pack six flat pieces of 2 to 7 cubes into a solid 3×3×3 cube; there are about 13 distinct solutions.

Fit irregular, usually interlocking pieces together to rebuild a complete picture and outline.

A sliding block puzzle on a 4×5 board: shuffle blocks of different sizes to get the 2×2 big block out through the bottom exit. Known in China as Huarong Dao and in Japan as Hakoiri Musume.

Shade an L, I, T or S shape of four cells in each room so all shaded cells connect, no 2×2 is shaded, and identical shapes never touch.

A 3D interlocking wood (burr) puzzle: notched sticks assemble into a rigid cross without glue; take apart and reassemble.

A one-player pegboard puzzle: jump a peg horizontally or vertically over a neighbor into an empty hole and remove the jumped peg, usually until only one peg remains.

Fit the twelve pentominoes, each made of five joined squares, into a rectangle such as 6×10 or a given shape, with no gaps.

A 3D twisty puzzle: turn the layers of a 3×3×3 cube until each face is a solid color.

A 6×6 traffic sliding puzzle: slide cars and trucks along their lanes to free the red car through the exit.

A Japanese seven-piece silhouette puzzle that cuts a square differently from the Chinese Tangram; all seven pieces are used without overlap to match a target outline.

Assemble seven irregular cube pieces into a 3×3×3 cube or another prescribed three-dimensional form.

A Chinese seven-piece dissection puzzle in which all pieces are rearranged without overlap to reproduce a silhouette.

A 15-piece Qing-dynasty silhouette puzzle by Tong Yegeng, with some curved pieces. Not the same as the seven-piece Tangram, which is sometimes also called "Yizhi tu."

Move a size-ordered stack of disks between three pegs without placing a larger disk on a smaller one.