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daj95376
Joined: 23 Aug 2008 Posts: 3854
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Posted: Sun Jan 30, 2011 6:33 pm Post subject: Puzzle 11/01/30 Horrible ... |
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... but it has an interesting DP that I have to share.
Code: | +-----------------------+
| . . 2 | 1 . . | . . . |
| . 7 . | . . . | 1 . . |
| 8 . 1 | . 4 . | 5 6 2 |
|-------+-------+-------|
| 5 . . | . 1 . | 3 . . |
| . . 8 | 7 6 . | . . . |
| . . . | . . 5 | . . . |
|-------+-------+-------|
| . 8 9 | 6 . . | 7 2 4 |
| . . 5 | . . . | 6 1 . |
| . . 7 | . . . | 8 . 3 |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site
Code: | after basics and X-Wing on <3>
<49> DP[(2)r5c7 = (6)r12c1] - (6=123)r987c1 - (123=9)r5c1 - (49=2)r5c87 => r5c7=2
+--------------------------------------------------------------+
| *49+6 5 2 | 1 8 69 | *49 3 7 |
| *49+6 7 36 | 5 239 269 | 1 *49 8 |
| 8 39 1 | 39 4 7 | 5 6 2 |
|--------------------+--------------------+--------------------|
| 5 29 4 | 289 1 289 | 3 7 6 |
| 1239 1239 8 | 7 6 2349 | *49+2 *49 5 |
| 7 269 36 | 249 239 5 | 249 8 1 |
|--------------------+--------------------+--------------------|
| 13 8 9 | 6 5 13 | 7 2 4 |
| 23 234 5 | 2348 7 2348 | 6 1 9 |
| 126 1246 7 | 249 29 1249 | 8 5 3 |
+--------------------------------------------------------------+
# 62 eliminations remain
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ronk
Joined: 07 May 2006 Posts: 398
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Posted: Sun Jan 30, 2011 7:45 pm Post subject: Re: Puzzle 11/01/30 Horrible ... |
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daj95376 wrote: | Code: | after basics and X-Wing on <3>
<49> DP[(2)r5c7 = (6)r12c1] - (6=123)r987c1 - (123=9)r5c1 - (49=2)r5c87 => r5c7=2
+--------------------------------------------------------------+
| *49+6 5 2 | 1 8 69 | *49 3 7 |
| *49+6 7 36 | 5 239 269 | 1 *49 8 |
| 8 39 1 | 39 4 7 | 5 6 2 |
|--------------------+--------------------+--------------------|
| 5 29 4 | 289 1 289 | 3 7 6 |
| 1239 1239 8 | 7 6 2349 | *49+2 *49 5 |
| 7 269 36 | 249 239 5 | 249 8 1 |
|--------------------+--------------------+--------------------|
| 13 8 9 | 6 5 13 | 7 2 4 |
| 23 234 5 | 2348 7 2348 | 6 1 9 |
| 126 1246 7 | 249 29 1249 | 8 5 3 |
+--------------------------------------------------------------+
# 62 eliminations remain
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Or use this larger MUG+2 with fewer extra candidates: Code: |
+--------------------------------------------------------------+
| *469 5 2 | 1 8 *69 | *49 3 7 |
| *469 7 36 | 5 239 *69+2 | 1 *49 8 |
| 8 39 1 | 39 4 7 | 5 6 2 |
|--------------------+--------------------+--------------------|
| 5 29 4 | 289 1 289 | 3 7 6 |
| 1239 1239 8 | 7 6 349-2 | *49+2 *49 5 |
| 7 269 36 | 249 239 5 | 249 8 1 |
|--------------------+--------------------+--------------------|
| 13 8 9 | 6 5 13 | 7 2 4 |
| 23 234 5 | 2348 7 2348 | 6 1 9 |
| 126 1246 7 | 249 29 1249 | 8 5 3 |
+--------------------------------------------------------------+
MUG(469)r125c1678:[(2)r2c6 = (2)r5c7] ==> r5c6<>2
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[edit: 'MUG(469)' was 'MUG(2469)']
Last edited by ronk on Mon Jan 31, 2011 2:25 am; edited 1 time in total |
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peterj
Joined: 26 Mar 2010 Posts: 974 Location: London, UK
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Posted: Sun Jan 30, 2011 7:49 pm Post subject: |
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Danny, nice one - seems to be BUG/MUG season at the moment!
When following the als part of your move I noticed that the same basic chain can be extended using two different als(249) in band 2. This eliminates (6)r9c2 and cracks the puzzle!
Code: | *----------------------------------------------------------------*
| 469 5 2 | 1 8 69 | 49 3 7 |
| 469 7 36 | 5 239 269 | 1 49 8 |
| 8 39 1 | 39 4 7 | 5 6 2 |
|----------------------+---------------------+-------------------|
| 5 29 4 | 289 1 289 | 3 7 6 |
| (123,9) 1239 8 | 7 6 (249,3)| (249) (49) 5 |
| 7 (29,6) 36 | (249) (29,3) 5 | (249) 8 1 |
|----------------------+---------------------+-------------------|
| (13) 8 9 | 6 5 13 | 7 2 4 |
| (23) 234 5 | 2348 7 2348 | 6 1 9 |
| (12,6) 124-6 7 | 249 29 1249 | 8 5 3 |
*----------------------------------------------------------------*
als(6=123)r789c1 - (123=9)r5c1 - als(249=3)r5c876 - als(3=249)r6c ; r9c2<>6 |
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