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Daily Sudoku — 23 July 2026

The puzzle

  • 23 July 2026
  • Medium
  • 34 clues
Puzzle
2·5·7····
·748·····
·91·3·46·
·4·9168··
91······4
···742···
5·94·37·6
······3·2
·2·16··5·
Solution
235674189
674891523
891235467
742916835
916358274
358742691
589423716
167589342
423167958

Solve it in the app to get on the board

Step-by-step solution

Every cell below is filled by the same hint engine the app uses, in the order it can be deduced — 47 steps using 2 techniques.

Techniques used

  • Hidden Single — inside one row, column or box this digit fits in only one cell, so it must go there
  • Naked Single — every other digit is already used in this cell's row, column or box, so only one candidate is left
  1. R1C6 = 4 · Hidden SingleIn the top-centre 3×3 box, 4 fits in only one cell. Looking at the other empty cells:- Because column 4 already has a 4, R1C4 cannot hold 4.- Because row 2 already has a 4, R2C5 and R2C6 cannot hold 4.- Because row 3 already has a 4, R3C4 and R3C6 cannot hold 4.So 4 must go in R1C6.
  2. R2C6 = 1 · Hidden SingleIn the top-centre 3×3 box, 1 fits in only one cell. Looking at the other empty cells:- Because column 4 already has a 1, R1C4 cannot hold 1.- Because column 5 already has a 1, R2C5 cannot hold 1.- Because row 3 already has a 1, R3C4 and R3C6 cannot hold 1.So 1 must go in R2C6.
  3. R1C4 = 6 · Hidden SingleIn the top-centre 3×3 box, 6 fits in only one cell. Looking at the other empty cells:- Because column 5 already has a 6, R2C5 cannot hold 6.- Because row 3 already has a 6, R3C4 and R3C6 cannot hold 6.So 6 must go in R1C4.
  4. R2C1 = 6 · Hidden SingleIn the top-left 3×3 box, 6 fits in only one cell. Looking at the other empty cells:- Because row 1 already has a 6, R1C2 cannot hold 6.- Because row 3 already has a 6, R3C1 cannot hold 6.So 6 must go in R2C1.
  5. R1C2 = 3 · Hidden SingleIn the top-left 3×3 box, 3 fits in only one cell. Looking at the other empty cells:- Because row 3 already has a 3, R3C1 cannot hold 3.So 3 must go in R1C2.
  6. R3C1 = 8 · Naked SingleLooking at R3C1:- Row 3 already has 1, 3, 4, 6 and 9 → ruled out.- Column 1 already has 2 and 5 → ruled out.- The top-left 3×3 box already has 7 → ruled out.So this cell can only be 8.
  7. R2C5 = 9 · Hidden SingleIn the top-centre 3×3 box, 9 fits in only one cell. Looking at the other empty cells:- Because row 3 already has a 9, R3C4 and R3C6 cannot hold 9.So 9 must go in R2C5.
  8. R3C4 = 2 · Hidden SingleIn the top-centre 3×3 box, 2 fits in only one cell. Looking at the other empty cells:- Because column 6 already has a 2, R3C6 cannot hold 2.So 2 must go in R3C4.
  9. R3C6 = 5 · Naked SingleLooking at R3C6:- Row 3 already has 1, 2, 3, 4, 6, 8 and 9 → ruled out.- The top-centre 3×3 box already has 7 → ruled out.So this cell can only be 5.
  10. R3C9 = 7 · Naked SingleLooking at R3C9:- Row 3 already has 1, 2, 3, 4, 5, 6, 8 and 9 → ruled out.So this cell can only be 7.
  11. R6C2 = 5 · Hidden SingleIn the middle-left 3×3 box, 5 fits in only one cell. Looking at the other empty cells:- Because column 1 already has a 5, R4C1 and R6C1 cannot hold 5.- Because column 3 already has a 5, R4C3, R5C3 and R6C3 cannot hold 5.So 5 must go in R6C2.
  12. R5C4 = 3 · Hidden SingleIn the centre 3×3 box, 3 fits in only one cell. Looking at the other empty cells:- Because column 5 already has a 3, R5C5 cannot hold 3.- Because column 6 already has a 3, R5C6 cannot hold 3.So 3 must go in R5C4.
  13. R8C4 = 5 · Naked SingleLooking at R8C4:- Row 8 already has 2 and 3 → ruled out.- Column 4 already has 1, 4, 6, 7, 8 and 9 → ruled out.So this cell can only be 5.
  14. R5C5 = 5 · Hidden SingleIn the centre 3×3 box, 5 fits in only one cell. Looking at the other empty cells:- Because column 6 already has a 5, R5C6 cannot hold 5.So 5 must go in R5C5.
  15. R5C6 = 8 · Naked SingleLooking at R5C6:- Row 5 already has 1, 3, 4, 5 and 9 → ruled out.- Column 6 already has 2 and 6 → ruled out.- The centre 3×3 box already has 7 → ruled out.So this cell can only be 8.
  16. R6C3 = 8 · Hidden SingleIn the middle-left 3×3 box, 8 fits in only one cell. Looking at the other empty cells:- Because row 4 already has a 8, R4C1 and R4C3 cannot hold 8.- Because row 5 already has a 8, R5C3 cannot hold 8.- Because column 1 already has a 8, R6C1 cannot hold 8.So 8 must go in R6C3.
  17. R5C3 = 6 · Hidden SingleIn the middle-left 3×3 box, 6 fits in only one cell. Looking at the other empty cells:- Because row 4 already has a 6, R4C1 and R4C3 cannot hold 6.- Because column 1 already has a 6, R6C1 cannot hold 6.So 6 must go in R5C3.
  18. R4C3 = 2 · Hidden SingleIn the middle-left 3×3 box, 2 fits in only one cell. Looking at the other empty cells:- Because column 1 already has a 2, R4C1 cannot hold 2.- Because row 6 already has a 2, R6C1 cannot hold 2.So 2 must go in R4C3.
  19. R4C1 = 7 · Hidden SingleIn the middle-left 3×3 box, 7 fits in only one cell. Looking at the other empty cells:- Because row 6 already has a 7, R6C1 cannot hold 7.So 7 must go in R4C1.
  20. R6C1 = 3 · Naked SingleLooking at R6C1:- Row 6 already has 2, 4, 5, 7 and 8 → ruled out.- Column 1 already has 6 and 9 → ruled out.- The middle-left 3×3 box already has 1 → ruled out.So this cell can only be 3.
  21. R4C9 = 5 · Hidden SingleIn the middle-right 3×3 box, 5 fits in only one cell. Looking at the other empty cells:- Because column 8 already has a 5, R4C8 cannot hold 5.- Because row 5 already has a 5, R5C7 and R5C8 cannot hold 5.- Because row 6 already has a 5, R6C7, R6C8 and R6C9 cannot hold 5.So 5 must go in R4C9.
  22. R4C8 = 3 · Naked SingleLooking at R4C8:- Row 4 already has 1, 2, 4, 5, 6, 7, 8 and 9 → ruled out.So this cell can only be 3.
  23. R2C9 = 3 · Hidden SingleIn the top-right 3×3 box, 3 fits in only one cell. Looking at the other empty cells:- Because row 1 already has a 3, R1C7, R1C8 and R1C9 cannot hold 3.- Because column 7 already has a 3, R2C7 cannot hold 3.- Because column 8 already has a 3, R2C8 cannot hold 3.So 3 must go in R2C9.
  24. R2C7 = 5 · Hidden SingleIn the top-right 3×3 box, 5 fits in only one cell. Looking at the other empty cells:- Because row 1 already has a 5, R1C7, R1C8 and R1C9 cannot hold 5.- Because column 8 already has a 5, R2C8 cannot hold 5.So 5 must go in R2C7.
  25. R2C8 = 2 · Naked SingleLooking at R2C8:- Row 2 already has 1, 3, 4, 5, 6, 7, 8 and 9 → ruled out.So this cell can only be 2.
  26. R5C7 = 2 · Hidden SingleIn the middle-right 3×3 box, 2 fits in only one cell. Looking at the other empty cells:- Because column 8 already has a 2, R5C8 cannot hold 2.- Because row 6 already has a 2, R6C7, R6C8 and R6C9 cannot hold 2.So 2 must go in R5C7.
  27. R5C8 = 7 · Naked SingleLooking at R5C8:- Row 5 already has 1, 2, 3, 4, 5, 6, 8 and 9 → ruled out.So this cell can only be 7.
  28. R6C7 = 6 · Hidden SingleIn the middle-right 3×3 box, 6 fits in only one cell. Looking at the other empty cells:- Because column 8 already has a 6, R6C8 cannot hold 6.- Because column 9 already has a 6, R6C9 cannot hold 6.So 6 must go in R6C7.
  29. R8C1 = 1 · Hidden SingleIn the bottom-left 3×3 box, 1 fits in only one cell. Looking at the other empty cells:- Because column 2 already has a 1, R7C2 and R8C2 cannot hold 1.- Because column 3 already has a 1, R8C3 cannot hold 1.- Because row 9 already has a 1, R9C1 and R9C3 cannot hold 1.So 1 must go in R8C1.
  30. R9C1 = 4 · Naked SingleLooking at R9C1:- Row 9 already has 1, 2, 5 and 6 → ruled out.- Column 1 already has 3, 7, 8 and 9 → ruled out.So this cell can only be 4.
  31. R9C3 = 3 · Hidden SingleIn the bottom-left 3×3 box, 3 fits in only one cell. Looking at the other empty cells:- Because row 7 already has a 3, R7C2 cannot hold 3.- Because row 8 already has a 3, R8C2 and R8C3 cannot hold 3.So 3 must go in R9C3.
  32. R8C3 = 7 · Naked SingleLooking at R8C3:- Row 8 already has 1, 2, 3 and 5 → ruled out.- Column 3 already has 4, 6, 8 and 9 → ruled out.So this cell can only be 7.
  33. R8C2 = 6 · Hidden SingleIn the bottom-left 3×3 box, 6 fits in only one cell. Looking at the other empty cells:- Because row 7 already has a 6, R7C2 cannot hold 6.So 6 must go in R8C2.
  34. R7C2 = 8 · Naked SingleLooking at R7C2:- Row 7 already has 3, 4, 5, 6, 7 and 9 → ruled out.- Column 2 already has 1 and 2 → ruled out.So this cell can only be 8.
  35. R7C5 = 2 · Hidden SingleIn the bottom-centre 3×3 box, 2 fits in only one cell. Looking at the other empty cells:- Because row 8 already has a 2, R8C5 and R8C6 cannot hold 2.- Because row 9 already has a 2, R9C6 cannot hold 2.So 2 must go in R7C5.
  36. R7C8 = 1 · Naked SingleLooking at R7C8:- Row 7 already has 2, 3, 4, 5, 6, 7, 8 and 9 → ruled out.So this cell can only be 1.
  37. R8C5 = 8 · Naked SingleLooking at R8C5:- Row 8 already has 1, 2, 3, 5, 6 and 7 → ruled out.- Column 5 already has 4 and 9 → ruled out.So this cell can only be 8.
  38. R6C9 = 1 · Hidden SingleIn the middle-right 3×3 box, 1 fits in only one cell. Looking at the other empty cells:- Because column 8 already has a 1, R6C8 cannot hold 1.So 1 must go in R6C9.
  39. R6C8 = 9 · Naked SingleLooking at R6C8:- Row 6 already has 1, 2, 3, 4, 5, 6, 7 and 8 → ruled out.So this cell can only be 9.
  40. R1C7 = 1 · Hidden SingleIn the top-right 3×3 box, 1 fits in only one cell. Looking at the other empty cells:- Because column 8 already has a 1, R1C8 cannot hold 1.- Because column 9 already has a 1, R1C9 cannot hold 1.So 1 must go in R1C7.
  41. R9C7 = 9 · Naked SingleLooking at R9C7:- Row 9 already has 1, 2, 3, 4, 5 and 6 → ruled out.- Column 7 already has 7 and 8 → ruled out.So this cell can only be 9.
  42. R1C9 = 9 · Hidden SingleIn the top-right 3×3 box, 9 fits in only one cell. Looking at the other empty cells:- Because column 8 already has a 9, R1C8 cannot hold 9.So 9 must go in R1C9.
  43. R1C8 = 8 · Naked SingleLooking at R1C8:- Row 1 already has 1, 2, 3, 4, 5, 6, 7 and 9 → ruled out.So this cell can only be 8.
  44. R8C8 = 4 · Naked SingleLooking at R8C8:- Row 8 already has 1, 2, 3, 5, 6, 7 and 8 → ruled out.- Column 8 already has 9 → ruled out.So this cell can only be 4.
  45. R8C6 = 9 · Naked SingleLooking at R8C6:- Row 8 already has 1, 2, 3, 4, 5, 6, 7 and 8 → ruled out.So this cell can only be 9.
  46. R9C6 = 7 · Naked SingleLooking at R9C6:- Row 9 already has 1, 2, 3, 4, 5, 6 and 9 → ruled out.- Column 6 already has 8 → ruled out.So this cell can only be 7.
  47. R9C9 = 8 · Naked SingleLooking at R9C9:- Row 9 already has 1, 2, 3, 4, 5, 6, 7 and 9 → ruled out.So this cell can only be 8.

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