8
3
1
4
7
7
9
9
3
1
5
9
1
5
6
7
4
9
6
4
1
2
3
9
6

This Sudoku Puzzle has 73 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), undefined, Discontinuous Nice Loop, Naked Single, Finned Jellyfish, AIC, Full House, Uniqueness Test 6 techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Row 3 / Column 2 → 9 (Hidden Single)
  2. Row 8 / Column 5 → 6 (Hidden Single)
  3. Row 5 / Column 1 → 9 (Hidden Single)
  4. Row 7 / Column 5 → 9 (Hidden Single)
  5. Row 8 / Column 3 → 9 (Hidden Single)
  6. Row 3 / Column 5 → 1 (Hidden Single)
  7. Row 7 / Column 4 → 1 (Hidden Single)
  8. Locked Candidates Type 1 (Pointing): 5 in b1 => r2c4789<>5
  9. Locked Candidates Type 1 (Pointing): 3 in b7 => r45c2<>3
  10. Locked Candidates Type 2 (Claiming): 8 in r8 => r7c789,r9c8<>8
  11. 2-String Kite: 6 in r2c3,r5c8 (connected by r4c3,r5c2) => r2c8<>6
  12. Discontinuous Nice Loop: 2/5/8 r3c6 =6= r3c8 -6- r5c8 =6= r5c2 =7= r6c1 -7- r8c1 -5- r2c1 -2- r1c2 -6- r1c6 =6= r3c6 => r3c6<>2, r3c6<>5, r3c6<>8
  13. Row 3 / Column 6 → 6 (Naked Single)
  14. Locked Candidates Type 2 (Claiming): 2 in r3 => r1c78,r2c789<>2
  15. Finned Jellyfish: 2 r1359 c2689 fr9c3 => r7c2<>2
  16. Discontinuous Nice Loop: 2/3/8 r5c8 =6= r5c2 =7= r6c1 -7- r8c1 -5- r2c1 -2- r1c2 -6- r1c8 =6= r5c8 => r5c8<>2, r5c8<>3, r5c8<>8
  17. Row 5 / Column 8 → 6 (Naked Single)
  18. Locked Candidates Type 1 (Pointing): 3 in b6 => r7c9<>3
  19. AIC: 2/4 2- r2c5 =2= r1c6 -2- r1c2 -6- r4c2 =6= r4c3 =4= r4c5 -4 => r4c5<>2, r2c5<>4
  20. Finned X-Wing: 2 c15 r26 fr4c1 => r6c3<>2
  21. W-Wing: 8/4 in r6c3,r9c5 connected by 4 in r4c35 => r6c5,r9c3<>8
  22. Discontinuous Nice Loop: 8 r2c5 -8- r9c5 -4- r4c5 =4= r4c3 =6= r4c2 -6- r1c2 -2- r1c6 =2= r2c5 => r2c5<>8
  23. Locked Candidates Type 1 (Pointing): 8 in b2 => r59c4<>8
  24. Discontinuous Nice Loop: 2/4/8 r4c3 =6= r4c2 -6- r1c2 -2- r1c6 =2= r2c5 =3= r2c4 -3- r5c4 -7- r5c2 =7= r6c1 -7- r8c1 -5- r2c1 =5= r2c3 =6= r4c3 => r4c3<>2, r4c3<>4, r4c3<>8
  25. Row 4 / Column 3 → 6 (Naked Single)
  26. Row 4 / Column 5 → 4 (Hidden Single)
  27. Row 9 / Column 5 → 8 (Naked Single)
  28. Row 6 / Column 3 → 4 (Hidden Single)
  29. Row 2 / Column 7 → 6 (Hidden Single)
  30. Row 1 / Column 2 → 6 (Hidden Single)
  31. Row 7 / Column 3 → 8 (Hidden Single)
  32. Row 2 / Column 9 → 7 (Hidden Single)
  33. Row 1 / Column 6 → 2 (Hidden Single)
  34. Row 2 / Column 5 → 3 (Naked Single)
  35. Row 6 / Column 5 → 2 (Full House)
  36. Row 7 / Column 9 → 4 (Hidden Single)
  37. Row 5 / Column 4 → 3 (Hidden Single)
  38. Row 9 / Column 6 → 4 (Hidden Single)
  39. Row 9 / Column 4 → 7 (Hidden Single)
  40. Row 7 / Column 6 → 5 (Full House)
  41. Locked Candidates Type 1 (Pointing): 2 in b7 => r9c8<>2
  42. Uniqueness Test 6: 2/3 in r7c28,r9c28 => r7c2,r9c8<>3
  43. Row 7 / Column 2 → 7 (Naked Single)
  44. Row 9 / Column 8 → 5 (Naked Single)
  45. Row 7 / Column 7 → 2 (Naked Single)
  46. Row 7 / Column 8 → 3 (Full House)
  47. Row 8 / Column 1 → 5 (Naked Single)
  48. Row 9 / Column 3 → 2 (Naked Single)
  49. Row 2 / Column 3 → 5 (Full House)
  50. Row 2 / Column 1 → 2 (Full House)
  51. Row 9 / Column 2 → 3 (Full House)
  52. Row 4 / Column 1 → 3 (Naked Single)
  53. Row 6 / Column 1 → 7 (Full House)
  54. Row 6 / Column 6 → 8 (Naked Single)
  55. Row 5 / Column 6 → 7 (Full House)
  56. Row 6 / Column 7 → 1 (Naked Single)
  57. Row 6 / Column 9 → 3 (Full House)
  58. Row 1 / Column 7 → 5 (Naked Single)
  59. Row 1 / Column 4 → 4 (Naked Single)
  60. Row 1 / Column 8 → 1 (Full House)
  61. Row 4 / Column 7 → 8 (Naked Single)
  62. Row 8 / Column 7 → 7 (Full House)
  63. Row 2 / Column 4 → 8 (Naked Single)
  64. Row 2 / Column 8 → 4 (Full House)
  65. Row 3 / Column 4 → 5 (Full House)
  66. Row 8 / Column 8 → 8 (Naked Single)
  67. Row 3 / Column 8 → 2 (Full House)
  68. Row 8 / Column 9 → 1 (Full House)
  69. Row 3 / Column 9 → 8 (Full House)
  70. Row 4 / Column 2 → 2 (Naked Single)
  71. Row 4 / Column 9 → 5 (Full House)
  72. Row 5 / Column 9 → 2 (Full House)
  73. Row 5 / Column 2 → 8 (Full House)
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