How to play

Write the numbers from 1 to 100 on the 10×10 grid, one per cell.

• Put the 1 wherever you like: tap any cell.
• Each following number starts from the cell of the last number you wrote.
• Horizontally or vertically you skip 2 cells and land on the 3rd.
• Diagonally you skip 1 cell and land on the 2nd.
• You can’t reuse an occupied cell or leave the grid.
• If you run out of moves before 100 you lose; reach 100 and you win.

From the orange cell you can jump to the 8 green cells:

Controls

• Moves: shows or hides the cells you can jump to.
• Undo: removes the last number; you can undo as many times as you like.
• New game: starts over (asks for confirmation during a game).
• The game saves itself: close it, reopen it and carry on where you left off.

Keyboard

• ← ↑ → ↓ to move around the grid, Enter or Space to write the number.
• Ctrl+Z or U to undo, M to show/hide moves.

Controller

• D-pad or left stick to move, A/✕ to write the number, B/○ to undo.
• Y/△ shows or hides the moves, Start/Options starts a new game. Works with Xbox, PlayStation and compatible controllers, iPad included.

Can you always win?

Yes: wherever the 1 starts, there is at least one path that reaches 100. Finding it is another story.

Privacy

No cookies, no tracking, no third-party scripts or services. Your game, best score and preferences stay in this browser only. The language comes from the page address or your browser settings and is picked on your device. The site is hosted on Neocities, which, like any web server, receives your browser’s normal requests.

The source code is free software under the GNU AGPLv3; images are licensed under CC BY-SA 4.0.

Dedicated to class 5C at the Spalla