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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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 Posted: Fri Jun 11, 2010 11:49 am Post subject: Free Press Jun 11, 2010 |
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Not yet done: | Code: | Puzzle: FP061110
+-------+-------+-------+
| 2 . . | . . . | 5 . 6 |
| 6 . . | 7 . . | . . 3 |
| 5 4 8 | . . . | . . . |
+-------+-------+-------+
| . . 1 | . 9 4 | . . . |
| . . . | 5 . 7 | . . . |
| . . . | 6 1 . | 2 . . |
+-------+-------+-------+
| . . . | . . . | 3 9 2 |
| 4 . . | . . 9 | . . 5 |
| 9 . 3 | . . . | 4 . 1 |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Sat Jun 12, 2010 2:53 am Post subject: |
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| Talk about polarized! Thursday's puzzle solves with basics, and Friday's puzzle needs ALS support. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sat Jun 12, 2010 4:41 am Post subject: |
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| I screwed up, but don't want to do it again. Basics got me down to a situation that was a BUG+1 or Type 1 UR involving the same cell. But the cell had a different solution for each technique. I played the UR and finished. |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Sat Jun 12, 2010 5:31 am Post subject: |
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The chain is mine ... and the rest is my solver.
| Code: | c7 Naked Pair <> 67 r35c7
c1b4 Locked Triple <> 378 r456c2
r9 b8 Locked Candidate 1 <> 2 r9c2
c8b3 Locked Candidate 1 <> 4 r56c8
c8b9 Locked Candidate 1 <> 8 r456c8
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| Code: | +-----------------------------------------------------------------------+
| 2 3 7 | 9 48 18 | 5 14 6 |
| 6 1 9 | 7 245 25 | 8 24 3 |
| 5 4 8 | 23 26 1236 | 19 127 79 |
|-----------------------+-----------------------+-----------------------|
| *78+3 256 1 | 238 9 4 | 67 3567 *78 |
| 38 269 246 | 5 28 7 | 19 136 489 |
| *78+3 59 45 | 6 1 38 | 2 357 *78+49 |
|-----------------------+-----------------------+-----------------------|
| 1 5678 56 | 4 5678 568 | 3 9 2 |
| 4 2678 26 | 1 3 9 | 67 678 5 |
| 9 5678 3 | 28 25678 2568 | 4 678 1 |
+-----------------------------------------------------------------------+
# 77 eliminations remain
| <78> UR r46c19 |
(5=49)r6c23 - [(49)r6c9 = (3)r46c1] - (3=8)r5c1 - (8=2)r5c5 - r4c4 = (2)r4c2 => r4c2<>5
_________________________________________________________________________________________
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| Code: | r6 Naked Triple <> 378 r6c9
<37+8> XY-Wing r6c8/r4c9+r6c6 <> 8 r4c4
c6 Naked Triple <> 256 r3c6
<28+3> XY-Wing r5c5/r4c4+r5c1 <> 3 r4c1
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Sat Jun 12, 2010 6:02 pm Post subject: |
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Ouch! I wasn't expecting that... had to deploy one of my "Almost xy-chains"
| Code: | almost xy-chain (8=3)r5c1-(3=1 fin 6)r5c8-(1=4)r1c8-(4=8)r1c5; r5c5<>8
fin (6)r5c8- (6=78)r4c79-(78=3)r4c1-(3=8)r5c1; r5c5<>8
xy-wing(37-8) r6c8; r4c4<>8 |
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