How to play
- Move a tile next to the empty space into that space.
- Build ordered rows without breaking sections already completed.
- Place every numbered tile in sequence using the fewest practical moves.
What this game practices
Connects number order with multi-step spatial planning. It is not arithmetic practice, but it fits the broader cool-math puzzle intent well.
How we checked it
Open-source HTML5 game reviewed in the local coolmath build for startup, primary controls, restart flow, narrow-screen fit, console errors, failed requests, and third-party network activity. Upstream telemetry is disabled in this self-hosted copy.
Open-source license and attribution
This self-hosted game is adapted from Web Games by mashukui and distributed under the MIT License. coolmath disabled upstream telemetry and records its local changes in the open-source notices.
Reviewed by coolmath Editorial Team · Updated 2026-10-09