Nonocross Level 42 Answer

Level 42 solved grid

Filled cells are shaded. The numbers are the row and column clues from the game.

Checked by the Cluekite solver against all 10 row and 10 column clues on 27 October 2026.

Open the grid as an image

Step-by-step hints for Level 42

Press the button to reveal one step at a time. Each step fills or crosses out cells in a single row or column, in the order a careful player would find them.

1. Step 1: Column 7 - the clue 10 fills the whole line. (10 filled)
2. Step 2: Column 4 - the clue 5 1 leaves only 3 free cells, so the middle of each long block must be filled. (2 filled)
3. Step 3: Column 5 - the clue 8 leaves only 2 free cells, so the middle of each long block must be filled. (6 filled)
4. Step 4: Column 6 - the clue 8 leaves only 2 free cells, so the middle of each long block must be filled. (6 filled)
5. Step 5: Column 8 - the clue 4 3 leaves only 2 free cells, so the middle of each long block must be filled. (3 filled)
6. Step 6: Row 1 - with the cells already marked, only one arrangement of 3 fits these positions. (5 crossed out)
7. Step 7: Row 2 - with the cells already marked, only one arrangement of 6 fits these positions. (2 filled, 1 crossed out)
8. Step 8: Row 3 - with the cells already marked, only one arrangement of 8 fits these positions. (2 filled)
9. Step 9: Row 4 - with the cells already marked, only one arrangement of 8 fits these positions. (1 filled)
10. Step 10: Row 5 - with the cells already marked, only one arrangement of 5 fits these positions. (4 crossed out)
11. Step 11: Row 6 - with the cells already marked, only one arrangement of 5 fits these positions. (3 crossed out)
12. Step 12: Row 7 - with the cells already marked, only one arrangement of 2 3 fits these positions. (1 filled, 4 crossed out)
13. Step 13: Row 8 - with the cells already marked, only one arrangement of 8 fits these positions. (2 filled)
14. Step 14: Row 9 - with the cells already marked, only one arrangement of 3 fits these positions. (5 crossed out)
15. Step 15: Row 10 - with the cells already marked, only one arrangement of 3 fits these positions. (5 crossed out)
16. Step 16: Column 1 - with the cells already marked, only one arrangement of 2 1 fits these positions. (2 filled)
17. Step 17: Row 3 - with the cells already marked, only one arrangement of 8 fits these positions. (1 filled, 2 crossed out)
18. Step 18: Row 4 - with the cells already marked, only one arrangement of 8 fits these positions. (1 filled, 2 crossed out)
19. Step 19: Column 2 - with the cells already marked, only one arrangement of 3 1 fits these positions. (1 filled, 1 crossed out)
20. Step 20: Row 2 - with the cells already marked, only one arrangement of 6 fits these positions. (2 filled, 3 crossed out)
21. Step 21: Column 3 - every block of 3 1 is already placed, so the remaining cells are empty. (3 crossed out)
22. Step 22: Row 5 - with the cells already marked, only one arrangement of 5 fits these positions. (1 filled)
23. Step 23: Row 6 - with the cells already marked, only one arrangement of 5 fits these positions. (1 filled)
24. Step 24: Row 7 - with the cells already marked, only one arrangement of 2 3 fits these positions. (1 filled)
25. Step 25: Column 1 - every block of 2 1 is already placed, so the remaining cells are empty. (1 crossed out)
26. Step 26: Row 8 - with the cells already marked, only one arrangement of 8 fits these positions. (2 filled)
27. Step 27: Column 4 - with the cells already marked, only one arrangement of 5 1 fits these positions. (1 filled)
28. Step 28: Row 6 - every block of 5 is already placed, so the remaining cells are empty. (1 crossed out)
29. Step 29: Column 5 - with the cells already marked, only one arrangement of 8 fits these positions. (1 crossed out)
30. Step 30: Row 10 - with the cells already marked, only one arrangement of 3 fits these positions. (1 filled)
31. Step 31: Column 6 - with the cells already marked, only one arrangement of 8 fits these positions. (1 crossed out)
32. Step 32: Row 10 - with the cells already marked, only one arrangement of 3 fits these positions. (1 filled)
33. Step 33: Column 8 - with the cells already marked, only one arrangement of 4 3 fits these positions. (1 filled, 1 crossed out)
34. Step 34: Row 1 - with the cells already marked, only one arrangement of 3 fits these positions. (2 filled, 1 crossed out)
35. Step 35: Column 5 - every block of 8 is already placed, so the remaining cells are empty. (1 crossed out)
36. Step 36: Column 6 - every block of 8 is already placed, so the remaining cells are empty. (1 crossed out)
37. Step 37: Row 9 - with the cells already marked, only one arrangement of 3 fits these positions. (1 filled)

Level 42 at a glance

Grid size

10x10

Filled cells

54 of 100 (54 percent)

Longest clue

10 in Column 7

Logical steps

37

Picture

Toucan

Difficulty

Hard

Other valid fillings

no, the clues allow exactly one filling

The hidden picture

The finished grid draws: Toucan.

Tips for 10x10 grids

Big grids reward patience. Do a full pass over all rows, then all columns, and only fill cells you can prove. On a 10x10 board a single crossed-out cell often unlocks a whole line, so mark empties as carefully as fills.

Where players go wrong on Level 42

• The longest line is Column 7 with the clue 10, and it is a full line: its blocks and gaps add up to the whole length, so fill it first and let it anchor the lines that cross it.
• Row 1 has the fewest filled cells (3). Cross out its empty cells early; they unlock 4 columns.
• The last line the logic finishes is Row 9. If you are stuck there, every other line is already done, so recount its clue 3.

More Nonocross levels

All Nonocross answers | How to Play Nonocross

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