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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Tue Jun 28, 2011 2:00 am Post subject: Puzzle 11/06/28: ~ XY |
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| Code: | +-----------------------+
| 2 4 . | . 7 . | 8 . . |
| 8 . . | 2 . 1 | . . . |
| . . 1 | . 8 . | . . . |
|-------+-------+-------|
| . 8 . | 5 6 . | 1 . 2 |
| 6 . 4 | 9 . 3 | . . 5 |
| . 3 . | . 1 8 | 6 . . |
|-------+-------+-------|
| 4 . . | 8 . 2 | . 6 . |
| . . . | . . . | 2 . . |
| . . . | 1 3 . | . . 8 |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Wed Jun 29, 2011 4:50 am Post subject: |
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AIC; r2c5<>5
W-Wing (49); r2c9<>4
Coloring; r9c8<>5
XY-Wing (674), flightless with transport; r3c4<>4 |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Wed Jun 29, 2011 2:13 pm Post subject: |
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A fun, interesting puzzle that did not readily match my bag of moves but I had an unusual step.
(5=6)r8c2-r12c2=r1c3-(6=9)r1c9-r3c7=r7c7-(9=5)r7c5; r8c56<>5
Multi-coloring (5);r2c5,r7c7,r9c6<>5
Probably a reasonable way to describe this next move, but it is not immediately obvious to me.
| Code: | *--------------------------------------------------*
| 2 4 56 | 3 7 569 | 8 1 69 |
| 8 569 7 | 2 49 1 | 3 45 69 |
| 3 59-6 1 | 46 8 59-6 | 45 2 7 |
|----------------+----------------+----------------|
| 7 8 9 | 5 6 4 | 1 3 2 |
| 6 1 4 | 9 2 3 | 7 8 5 |
| 5 3 2 | 7 1 8 | 6 9 4 |
|----------------+----------------+----------------|
| 4 7 3 | 8 5 2 | 9 6 1 |
| 1 56 8 | 46 49 679 | 2 57 3 |
| 9 2 56 | 1 3 67 | 45 457 8 |
*--------------------------------------------------* |
axy-wing (49-6) vertex (49)r2c5 and fin(5)r2c2
If the xy-wing is true; then r3c2<>6. Plus transport: (6)r2c2-(6=5)r1c3-r1c6=(5-6)r3c6 for two deletions.
If fin is true: (5)r2c2-(5=6)r8c2*-r9c3=(6)r9c6; r3c26<>6 for the same two deletions as the xy-wing which makes r3c4=6 to complete the puzzle.
Ted |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Wed Jun 29, 2011 7:21 pm Post subject: |
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Ted,
Just for laughs, there's what I think is an AIC. The 5 in r9c3 proves a 6 in r8c4; r8c2<>6. |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Thu Jun 30, 2011 7:23 am Post subject: |
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Looked for a long time for some MUG/DP/Oddagon but gave up! Three steps...
| Code: | turbot/er(5) (5)r2c8=r3c7 - r7c7=r7c4 ; r2c5<>5
w-wing(49) (4=9)r2c5 r1c6=r1c9 - (9=4)r6c9 ; r2c9<>4
xy-chain ; (5=4)r2c8 - (4=9)r2c5 - (9=4)r8c5 - (4=6)r8c4 - (6=5)r8c2 ; r2c2<>5, r8c8<>5 |
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JC Van Hay
Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
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| Posted: Thu Jun 30, 2011 12:17 pm Post subject: |
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6r9c3=6r9c6-6r8c4=(6-4)r3c4=4r3c7-(4=5)r9c7 => -5r9c3
Kite 5R7C8 => -5r2c5 |
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