Sumino

Answer for 2026-10-13

Spoilers ahead! The highlighted cells stay; crossed-out values are removed. Below the grid you will find the complete deduction path: the same reasoning the in-game hints use, step by step.

81321089
1117681
17284493
6431527
10854142
9251234
7461911

Step-by-step walkthrough

  1. Too big: row 1: value 7 exceeds the remaining target 1. Remove (1,3).
  2. Too big: row 1: value 6 exceeds the remaining target 1. Remove (1,4).
  3. Too big: row 1: value 8 exceeds the remaining target 1. Remove (1,5).
  4. Too big: row 3: value 7 exceeds the remaining target 6. Remove (3,6).
  5. Too big: row 6: value 9 exceeds the remaining target 7. Remove (6,4).
  6. Too big: column 3: value 4 exceeds the remaining target 2. Remove (2,3).
  7. Too big: column 3: value 4 exceeds the remaining target 2. Remove (4,3).
  8. Too big: column 5: value 9 exceeds the remaining target 8. Remove (2,5).
  9. All in: row 2: the remaining target 17 equals the sum of all undecided cells, so all of them stay. Keep (2,1), (2,2), (2,4), (2,6).
  10. All in: region 1: the remaining target 4 equals the sum of all undecided cells, so all of them stay. Keep (1,6).
  11. All out: row 1: the target is already reached, so all undecided cells go. Remove (1,1), (1,2).
  12. Too big: column 1: value 8 exceeds the remaining target 6. Remove (4,1).
  13. Too big: column 2: value 6 exceeds the remaining target 5. Remove (6,2).
  14. Too big: region 5: value 3 exceeds the remaining target 1. Remove (3,2).
  15. All in: row 6: the remaining target 7 equals the sum of all undecided cells, so all of them stay. Keep (6,1), (6,3), (6,5), (6,6).
  16. All in: region 3: the remaining target 7 equals the sum of all undecided cells, so all of them stay. Keep (5,6).
  17. All in: region 5: the remaining target 1 equals the sum of all undecided cells, so all of them stay. Keep (3,3).
  18. All out: column 3: the target is already reached, so all undecided cells go. Remove (5,3).
  19. All out: column 6: the target is already reached, so all undecided cells go. Remove (4,6).
  20. All in: row 4: the remaining target 10 equals the sum of all undecided cells, so all of them stay. Keep (4,2), (4,4), (4,5).
  21. All out: column 2: the target is already reached, so all undecided cells go. Remove (5,2).
  22. Too big: column 1: value 4 exceeds the remaining target 2. Remove (3,1).
  23. All in: column 1: the remaining target 2 equals the sum of all undecided cells, so all of them stay. Keep (5,1).
  24. Must stay: row 3: without this 5 the remaining cells sum to 2, short of the target 5. Keep (3,4).
  25. Must stay: row 5: without this 3 the remaining cells sum to 2, short of the target 3. Keep (5,5).
  26. All out: row 3: the target is already reached, so all undecided cells go. Remove (3,5).
  27. All out: row 5: the target is already reached, so all undecided cells go. Remove (5,4).

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