## The Independent Prize Puzzle 10th December, 2005

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### The Independent Prize Puzzle 10th December, 2005

I have got so far with this puzzle (see http://www.dragondrop.com/images/IndependentSuduko20051210a.jpg and I can't work out what on earth is next step.

I've fed this very grid into SudukoWorks and it comes up with the solution so this means that I do know that I am correct so far.

But the problem with this program it doesn't tell me how it gets from the half empty grid to the solution.

Can anyone help?

- Malc
MalcolmSm1th

Posts: 1
Joined: 15 December 2005

Malcolm,

from what I can see, there are some basic moves you can do.

* 9 and B can be placed in Column 7,
* 3 can be placed in Box 14
* 9 in Box 2
* 7 in box 6

Each time you add in a number, see if it unlocks anything else.

Is this puzzle a competition in the Independent Newspaper Crazy Girl

Posts: 189
Joined: 08 November 2005

Here's the solution. Frankly, these puzzles are tedious rather than difficult to complete (unless you have a computer solver, in which case they are tedious rather than difficult to enter). Fiendish puzzles with X-Wings and the like on a standard grid are much more interesting.

Code: Select all
` 9 . . . | . D E . | 2 . A . | . . . B  3 . B C | 2 7 . . | E 5 . . | . 6 . 9  A . . 0 | . 1 6 . | C . 3 B | . . E .  F 5 8 E | A B 3 C | 9 4 6 0 | . . 7 1 ---------+---------+---------+--------  B . . A | . . F . | D 8 5 4 | 1 0 2 7  . 8 3 D | E 5 . . | B 2 1 . | . . . .  5 . . 1 | B A 4 2 | 7 9 0 3 | 8 . . .  4 . . . | 1 8 D . | F E C . | . . . . ---------+---------+---------+--------  7 . . 4 | 6 2 . 1 | A 3 9 D | F . 5 .  2 . . 3 | 5 F . D | 0 B 4 7 | 6 . . .  . . . 8 | . E . B | 5 6 2 F | 3 7 . 4  6 . 5 F | 9 4 7 3 | 1 C 8 E | . . . . ---------+---------+---------+--------  E . C . | . . . A | 6 . . 5 | . 1 . .  D . . . | . 9 . . | 8 . 7 C | E A B F  1 3 7 B | D 6 2 F | 4 A E 9 | . . C .  8 . . . | . . . E | 3 . B 2 | . . 4 6 1. The cell r6c7 is the only candidate for the value 9 in Column 7.2. The value 6 is the only candidate for the cell r5c8.3. The cell r14c5 is the only candidate for the value 3 in Row 14.4. The value 0 is the only candidate for the cell r13c6.5. The value C is the only candidate for the cell r5c5.6. The value 0 is the only candidate for the cell r11c5.7. The value C is the only candidate for the cell r11c1.8. The value A is the only candidate for the cell r11c7.9. The value 0 is the only candidate for the cell r6c1.10. The value 7 is the only candidate for the cell r16c5.11. The value 7 is the only candidate for the cell r6c8.12. The value 0 is the only candidate for the cell r8c8.13. The value C is the only candidate for the cell r16c6.14. The value 3 is the only candidate for the cell r5c6.15. The cell r2c7 is the only candidate for the value 0 in Column 7.16. The cell r7c2 is the only candidate for the value C in Column 2.17. The cell r7c3 is the only candidate for the value F in Box 5.18. The cell r7c15 is the only candidate for the value 6 in Row 7.19. The cell r6c12 is the only candidate for the value 6 in Row 6.20. The value A is the only candidate for the cell r8c12.21. The cell r13c13 is the only candidate for the value 7 in Row 13.22. The cell r13c16 is the only candidate for the value 2 in Box 16.23. The value 9 is the only candidate for the cell r13c4.24. The value 5 is the only candidate for the cell r16c4.25. The value 1 is the only candidate for the cell r16c7.26. The value 5 is the only candidate for the cell r14c7.27. The value 4 is the only candidate for the cell r14c8.28. The value 8 is the only candidate for the cell r2c8.29. The value 5 is the only candidate for the cell r1c8.30. The value 1 is the only candidate for the cell r2c12.31. The value 8 is the only candidate for the cell r1c12.32. The value 8 is the only candidate for the cell r13c5.33. The value 9 is the only candidate for the cell r3c8.34. The value B is the only candidate for the cell r13c7.35. The cell r10c15 is the only candidate for the value 8 in Column 15.36. The value C is the only candidate for the cell r10c7.37. The value 8 is the only candidate for the cell r9c7.38. The cell r13c2 is the only candidate for the value 4 in Row 13.39. The value D is the only candidate for the cell r2c2.40. The value F is the only candidate for the cell r2c11.41. The value 7 is the only candidate for the cell r1c10.42. The value D is the only candidate for the cell r3c10.43. The value 6 is the only candidate for the cell r1c4.44. The value 1 is the only candidate for the cell r1c2.45. The value 9 is the only candidate for the cell r11c2.46. The value 4 is the only candidate for the cell r1c3.47. The value 2 is the only candidate for the cell r3c3.48. The value F is the only candidate for the cell r1c5.49. The value A is the only candidate for the cell r2c15.50. The value 4 is the only candidate for the cell r2c13.51. The value 5 is the only candidate for the cell r3c13.52. The value 0 is the only candidate for the cell r15c13.53. The value E is the only candidate for the cell r5c2.54. The value A is the only candidate for the cell r10c2.55. The value E is the only candidate for the cell r10c16.56. The value C is the only candidate for the cell r1c13.57. The value 3 is the only candidate for the cell r1c14.58. The value 8 is the only candidate for the cell r3c16.59. The value A is the only candidate for the cell r6c13.60. The value C is the only candidate for the cell r6c16.61. The value 0 is the only candidate for the cell r9c16.62. The value D is the only candidate for the cell r12c15.63. The value B is the only candidate for the cell r9c2.64. The value 9 is the only candidate for the cell r10c14.65. The value D is the only candidate for the cell r16c14.66. The value 2 is the only candidate for the cell r4c14.67. The value 0 is the only candidate for the cell r12c2.68. The value B is the only candidate for the cell r12c14.69. The value 5 is the only candidate for the cell r8c14.70. The value 2 is the only candidate for the cell r14c4.71. The value 6 is the only candidate for the cell r14c2.72. The value 0 is the only candidate for the cell r14c3.73. The value 7 is the only candidate for the cell r3c2.74. The value F is the only candidate for the cell r3c14.75. The value 9 is the only candidate for the cell r5c3.76. The value 3 is the only candidate for the cell r8c16.77. The value 9 is the only candidate for the cell r8c15.78. The value 1 is the only candidate for the cell r10c3.79. The value F is the only candidate for the cell r13c10.80. The value 0 is the only candidate for the cell r1c15.81. The value 4 is the only candidate for the cell r3c5.82. The value D is the only candidate for the cell r4c13.83. The value 4 is the only candidate for the cell r6c14.84. The value F is the only candidate for the cell r6c15.85. The value E is the only candidate for the cell r7c14.86. The value D is the only candidate for the cell r7c16.87. The value 2 is the only candidate for the cell r8c2.88. The value 6 is the only candidate for the cell r8c3.89. The value 7 is the only candidate for the cell r8c4.90. The value B is the only candidate for the cell r8c13.91. The value E is the only candidate for the cell r9c3.92. The value C is the only candidate for the cell r9c14.93. The value D is the only candidate for the cell r11c3.94. The value 1 is the only candidate for the cell r11c15.95. The value 2 is the only candidate for the cell r12c13.96. The value A is the only candidate for the cell r12c16.97. The value D is the only candidate for the cell r13c11.98. The value 3 is the only candidate for the cell r13c15.99. The value 1 is the only candidate for the cell r14c10.100. The value 8 is the only candidate for the cell r15c14.101. The value 5 is the only candidate for the cell r15c16.102. The value F is the only candidate for the cell r16c2.103. The value A is the only candidate for the cell r16c3.104. The value 0 is the only candidate for the cell r16c10.105. The value 9 is the only candidate for the cell r16c13. 9 1 4 6 | F D E 5 | 2 7 A 8 | C 3 0 B  3 D B C | 2 7 0 8 | E 5 F 1 | 4 6 A 9  A 7 2 0 | 4 1 6 9 | C D 3 B | 5 F E 8  F 5 8 E | A B 3 C | 9 4 6 0 | D 2 7 1 ---------+---------+---------+--------  B E 9 A | C 3 F 6 | D 8 5 4 | 1 0 2 7  0 8 3 D | E 5 9 7 | B 2 1 6 | A 4 F C  5 C F 1 | B A 4 2 | 7 9 0 3 | 8 E 6 D  4 2 6 7 | 1 8 D 0 | F E C A | B 5 9 3 ---------+---------+---------+--------  7 B E 4 | 6 2 8 1 | A 3 9 D | F C 5 0  2 A 1 3 | 5 F C D | 0 B 4 7 | 6 9 8 E  C 9 D 8 | 0 E A B | 5 6 2 F | 3 7 1 4  6 0 5 F | 9 4 7 3 | 1 C 8 E | 2 B D A ---------+---------+---------+--------  E 4 C 9 | 8 0 B A | 6 F D 5 | 7 1 3 2  D 6 0 2 | 3 9 5 4 | 8 1 7 C | E A B F  1 3 7 B | D 6 2 F | 4 A E 9 | 0 8 C 5  8 F A 5 | 7 C 1 E | 3 0 B 2 | 9 D 4 6 `
rubylips

Posts: 149
Joined: 01 November 2005

Do you mean to day that this puzzle, that looks very complicated, can be reduced to just 11 hidden singles and 94 naked singles ???

Not sure if I'd want an X-wing on a 16, but pairs (both types) would be nice...
Lardarse

Posts: 106
Joined: 01 July 2005