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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Tue Oct 26, 2010 3:14 am Post subject: Puzzle 10/10/26: C XY |
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| Code: | +-----------------------+
| . . 8 | . 4 7 | 3 . 1 |
| . . 7 | . . . | . 5 4 |
| 4 6 1 | 3 . . | 7 8 2 |
|-------+-------+-------|
| . . 2 | 5 . . | 4 . 3 |
| 5 . . | . . . | . . . |
| 3 . . | . . 1 | 8 . . |
|-------+-------+-------|
| 1 . 3 | 7 . 5 | 2 . 6 |
| . 7 5 | . . . | . . . |
| 8 2 4 | 1 . . | 5 . . |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Tue Oct 26, 2010 12:15 pm Post subject: |
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A chain with a pair does some damage - two steps...
| Quote: | AIC with ANP ; (9)r4c5=r4c8 - (9=6)r1c8 - (6=2)r1c4 - ANP(2=68) - (6)r9c6=r9c5 ; r4c5<>6, r9c5<>9
BUG+1 ; r6c8=6 |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Tue Oct 26, 2010 3:33 pm Post subject: |
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I did a fair amount of beating the bushes ............
| Quote: | kite 9 pivot b6; r9c5<>9
x-chain 6: r1c4=r1c8-r46c8=r5c7-r5c3=r6c3; r6c4<>6
(8=1)r4c2-(1=9)r4c8-(9=6)r1c8-(6=2)r1c4-(2=8)r2c6; r4c6<>8 |
Ted |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Tue Oct 26, 2010 9:36 pm Post subject: |
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I suspected that my solver's solution masked the true difficulty of this puzzle.
| Code: | r14\c48 Sashimi X-Wing <> 6 r56c4
-plus-
r4 b8 Empty Rectangle <> 9 r8c8 extraneous
r4c9 2-String Kite <> 9 r9c5 extraneous
<26+9> XY-Wing r1c4/r1c8+r6c4 <> 9 r6c8 extraneous
+--------------------------------------------------------------+
| 29 5 8 | 26 4 7 | 3 69 1 |
| 29 3 7 | 268 1 28 | 69 5 4 |
| 4 6 1 | 3 5 9 | 7 8 2 |
|--------------------+--------------------+--------------------|
| 7 18 2 | 5 69 68 | 4 19 3 |
| 5 18 69 | 248 23 2348 | 69 12 7 |
| 3 4 69 | 29 7 1 | 8 26 5 |
|--------------------+--------------------+--------------------|
| 1 9 3 | 7 8 5 | 2 4 6 |
| 6 7 5 | 249 29 24 | 1 3 8 |
| 8 2 4 | 1 36 36 | 5 7 9 |
+--------------------------------------------------------------+
# 31 eliminations remain
XY-Chain: (2=8)r2c6 - (8=6)r4c6 - (6=9)r4c5 - (9=2)r6c4 => r12c4,r5c6<>2
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Wed Oct 27, 2010 4:47 am Post subject: |
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| I used my usual six moves, no sense detailing them. |
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