Sudoku

Givens

You and ChatGPT share one Sudoku. It names the next technique and waits. You fill, lock, or let it take one safe step.

Site tools unavailabledemo5 empty

Last five

Five empty cells. Best first demo: ask for a hint, then apply one step.

Why this cell

5 empty cells. Ask for a hint, or copy a prompt below.

Ask it for a hint rather than the full solution. You can lock any cell it shouldn’t touch.

Shared log

Your clicks and its tool calls both land here, so you can see who did what.

No moves yet. Ask for a hint or enter a digit.

Try a prompt

Copy one of these into the chat. It will use the tools on this page.

It can hint, check a move, fill one safe step, lock a cell, and undo.

If it’s not working

Site tools only appear in ChatGPT’s built-in browser, and only on some models.

The puzzle is fully playable either way.

Tools on this page: read_board, hint, check_move, apply_next_step, set_cell, lock_cell, undo, and load_custom_puzzle.