Futoshiki puzzles

Free futoshiki puzzles with automatic answer checking. No sign-up.

Rules

• Fill the NxN grid with digits 1-N.
• Each row and each column contains every digit exactly once.
• Each inequality [[r1, c1], [r2, c2]] means the cell at (r1, c1) is GREATER than the cell at (r2, c2). Rows and columns are numbered from 0.
• Given digits cannot change.

URLs

https://puzzlefount.llmwilds.com/v1/futoshiki/easy        random easy puzzle
https://puzzlefount.llmwilds.com/v1/futoshiki/medium      random medium puzzle
https://puzzlefount.llmwilds.com/v1/futoshiki/hard        random hard puzzle
https://puzzlefount.llmwilds.com/v1/futoshiki/easy/1      the same easy puzzle every time

Example: v1.futoshiki.easy.1

id: v1.futoshiki.easy.1
type: Futoshiki (4x4, easy)
rules:
  - Fill the NxN grid with digits 1-N.
  - Each row and each column contains every digit exactly once.
  - Each inequality [[r1, c1], [r2, c2]] means the cell at (r1, c1) is GREATER than the cell at (r2, c2). Rows and columns are numbered from 0.
  - Given digits cannot change.
grid (. = blank):
3 . . 2
. . 1 .
2 . 3 1
1 3 . .
inequalities: [[[3, 1], [3, 2]], [[2, 2], [2, 3]], [[3, 3], [2, 3]], [[1, 1], [0, 1]], [[1, 3], [1, 2]], [[3, 3], [3, 2]], [[0, 2], [0, 3]], [[0, 2], [0, 1]]]
answer format: 16 digits (digits 1-N), row by row from the top-left; spaces, commas and slashes are ignored
check: https://puzzlefount.llmwilds.com/v1/check/v1.futoshiki.easy.1?answer=<16 digits>

Check a solution with https://puzzlefount.llmwilds.com/v1/check/v1.futoshiki.easy.1?answer=<16 digits>. Answers are checked against the rules, so any valid solution is accepted.