Klotski (华容道, "Huarong Pass") is a classic Chinese sliding-block puzzle. The board is a 4-column × 5-row grid. Your goal is to slide the large 2×2 gold block (Cao Cao) down to the bottom-center exit. Blocks can only slide horizontally or vertically into empty spaces — they cannot jump or rotate. There are four block types: the 2×2 Cao Cao block (gold), 1×2 vertical warriors (blue), 2×1 horizontal warriors (green), and 1×1 soldiers (gray). Drag any block in the direction you want it to move; if the path is clear, it slides one cell. Win by maneuvering Cao Cao to the center of the bottom row.
Work backwards: figure out which soldiers and warriors must move out of Cao Cao's path before you slide it down. Clear space near the bottom exit early — you'll usually need both bottom-corner soldiers relocated. Don't waste moves shifting blocks you'll need again; every move counts toward your star rating. Use Undo to backtrack without resetting, and the Hint button performs an optimal next move via the built-in solver. Lower move counts earn more stars (par varies per level, from 72 to 200 moves).
Yes! Klotski is completely free to play in your browser with no download required.
Yes — drag blocks with your finger. The touch controls are fully optimized for phones and tablets.
30 handcrafted levels across 3 tiers of difficulty, each named after a famous Chinese stratagem (e.g. 横刀立马, 四面楚歌, 空城计). Par moves range from 72 to 200.
Slide the 2×2 Cao Cao block to the bottom-center exit. Only the big block can escape — the smaller blocks are obstacles you must rearrange to clear its path.