What is Adjacent?
Adjacent is a number puzzle. Fill each row and column with the numbers 1 to N, where N is the number of cells in each row. Orange bars and their absence provide clues about neighbouring numbers.
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Play Adjacent online
Fill the grid with unique numbers – orange bars between cells mean they differ by exactly 1.
01
Today's Adjacent challenge
Detailed results are kept for the current month and the previous three months. Older puzzles remain playable without new account results or puzzle points. Lifetime progress is preserved.
Calendar
List
October
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Su
| Date | Difficulty | Status |
|---|---|---|
| 27 October 2026 | Easy | Not played |
| 26 October 2026 | Easy | Not played |
| 25 October 2026 | Hard | Not played |
| 24 October 2026 | Hard | Not played |
| 23 October 2026 | Hard | Not played |
| 22 October 2026 | Medium | Not played |
| 21 October 2026 | Medium | Not played |
| 20 October 2026 | Easy | Not played |
| 19 October 2026 | Easy | Not played |
| 18 October 2026 | Hard | Not played |
| 17 October 2026 | Hard | Not played |
| 16 October 2026 | Hard | Not played |
| 15 October 2026 | Medium | Not played |
| 14 October 2026 | Medium | Not played |
| 13 October 2026 | Easy | Not played |
| 12 October 2026 | Easy | Not played |
| 11 October 2026 | Hard | Not played |
| 10 October 2026 | Hard | Not played |
| 9 October 2026 | Hard | Not played |
| 8 October 2026 | Medium | Not played |
| 7 October 2026 | Medium | Not played |
| 6 October 2026 | Easy | Not played |
| 5 October 2026 | Easy | Not played |
| 4 October 2026 | Hard | Not played |
| 3 October 2026 | Hard | Not played |
| 2 October 2026 | Hard | Not played |
| 1 October 2026 | Medium | Not played |
| 30 September 2026 | Medium | Not played |
| 29 September 2026 | Easy | Not played |
| 28 September 2026 | Easy | Not played |
| 27 September 2026 | Hard | Not played |
| 26 September 2026 | Hard | Not played |
| 25 September 2026 | Hard | Not played |
| 24 September 2026 | Medium | Not played |
| 23 September 2026 | Medium | Not played |
| 22 September 2026 | Easy | Not played |
| 21 September 2026 | Easy | Not played |
| 20 September 2026 | Hard | Not played |
| 19 September 2026 | Hard | Not played |
| 18 September 2026 | Hard | Not played |
| 17 September 2026 | Medium | Not played |
| 16 September 2026 | Medium | Not played |
| 15 September 2026 | Easy | Not played |
| 14 September 2026 | Easy | Not played |
| 13 September 2026 | Hard | Not played |
| 12 September 2026 | Hard | Not played |
| 11 September 2026 | Hard | Not played |
| 10 September 2026 | Medium | Not played |
| 9 September 2026 | Medium | Not played |
| 8 September 2026 | Easy | Not played |
Completed on time
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Today's challenge
Easy27 October 2026 • Not played
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02
Our puzzle books
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Everything you need to know about Adjacent
Learn the rules and try a practical solving tip.
Rules
- Use each number from 1 to N exactly once in every row and column.
- An orange bar means the two neighbouring numbers differ by exactly 1, such as 3 and 4.
- Without a bar, neighbouring numbers must differ by at least 2.
- These clues apply to horizontal and vertical neighbours.
Tips
Tip: On a 4×4 board, a cell containing 1 can only have 2 across an orange bar. Without a bar, that neighbour cannot be 2.