Explore puzzles

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.

Slide all tiles on a 4×4 grid; two equal tiles that collide merge into their sum. The goal is a 2048 tile, and you can keep going beyond it.

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 two-symbol puzzle: on an even-sized grid, place 0s and 1s so each row and column has equal counts of each, no three identical symbols run consecutively, and no two rows or columns are identical.

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.

Fill every cell with a number so each region of equal numbers has exactly that many cells; regions of the same size may not touch.

An inequality puzzle: fill an n×n grid with 1–n so no digit repeats in any row or column, and every > or < sign between neighbors holds.

A bridge puzzle: connect numbered islands with horizontal or vertical bridges so each island has as many bridges as its number. Two islands share at most two bridges, bridges never cross, and all islands must link up.

A room-shading puzzle: shade cells in bold rooms so each number matches its room’s shaded count. Shaded cells can’t touch side by side, white cells stay connected, and a straight line of white cells spans at most two rooms.

Fill the grid with consecutive numbers so each number touches the next one horizontally, vertically, or diagonally.

Shade some cells of a filled number grid so no number repeats in any row or column; shaded cells can’t touch, and unshaded cells must stay connected.

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

Shade cells so the column numbers of shaded cells in each row, and the row numbers in each column, add up to the given clues.

A logic puzzle: fill white cells with digits 1–9 so each crossword-like run matches its clue sum and contains no repeated digit.

An arithmetic puzzle: fill an n×n grid with 1–n so no digit repeats in any row or column, and the numbers in each thick cage reach its target with the given +, −, ×, or ÷.

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.