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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Sat Aug 28, 2010 4:53 pm Post subject: Puzzle 10/08/28: C |
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| Code: | +-----------------------+
| 3 . . | . . . | . . . |
| . 8 2 | 6 . . | . . . |
| . 7 . | . . 3 | . . 8 |
|-------+-------+-------|
| . 5 . | 3 4 . | . . 1 |
| . . . | 5 . . | . 2 4 |
| . . . | . . 9 | . 8 . |
|-------+-------+-------|
| . . . | . . 1 | . . . |
| . . . | . 8 . | 6 1 7 |
| . . 8 | 4 6 . | . 3 5 |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sun Aug 29, 2010 2:00 am Post subject: |
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AXY-wing -469 vertex (69)r7c2, pincers (46)r1c2 & (49)r8c1 with fin (1)r1c2
IF xy-wing is true r23c1,r8c2<>4
If fin is true (1)r1c2-(1=2)r9c2-(2=7)r9c6-(7=4)r2c6; r2c1<>4
If fin is true (1-6)r1c2=(6-4)r3c1; r3c1<>4
Kite 7 hinge box8; r6c1<>7
xy-wing 14-9 vertex (14)r6c1; r78c2<>9
AXY-wing 12-9 vertex (12)r3c4 pincers (19)r3c5 & (29)r8c4 with fin (2)r3c5
If xy-wing is true plus transport: (9)r3c5-r2c5=(9)r2c1; r8c1<>9
If fin is true: (2)r3c5-r1c6=r9c6-(2=9)r8c4; r8c1<>4
An attempt at describe as a chain: [(9)r2c1=(9)r2c5-[(9)r3c5=(9)r8c4]xy-wing:(12-9)r3c45|r8c4] = (2)r3c5-r1c6=r9c6-(2=9)r8c4; r8c1<>4
Ted |
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JC Van Hay
Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
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| Posted: Sun Aug 29, 2010 8:17 am Post subject: |
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| Quote: | Skyscraper on 2 : (2)C69 : r7c4,r9c7<>2
Grouped Skyscraper on 7 : (7)C14 : r7c3<>7
XY Wing (14-9) : (91)R5C2 (14)R6C1 (49)R8C1 : => r78c2<>9
5-SIS AIC : (92)R8C4 2C6 7R1 5C5 9R2 : (9)r8c4=(9)r2c1 : => r8c1<>9
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Ted, would you mind checking your grid after basics, please. Apparently we don't have the same : I have R7C2={269}.
JC |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Sun Aug 29, 2010 2:21 pm Post subject: |
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This was pretty much a BBDB XY for me.. four steps
| Quote: | skyscraper(2) ; r7c4<>2, r9c7<>2
w-wing(17) with pseudocell ; (1=7)r5c5 - r6c4=r7c4 - (7=2)r9c6-(2=1)r9c2 ; r5c2<>1
m-wing(71) with transport ; (7=1)r5c3 - r6c1=(1-7)r9c1=r9c6 - r1c6=r1c5 ; r5c5<>7
w-wing(29) with transport ; (9=2)r8c4 - r6c4=r6c5 - (2=9)r3c5 - r2c5=r2c1 ; r8c1<>9 |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sun Aug 29, 2010 2:33 pm Post subject: |
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| JC Van Hay wrote: | Ted, would you mind checking your grid after basics, please. Apparently we don't have the same : I have R7C2={269}.
JC |
JC, I redid basics and found several differences including the one you spotted. Of course it is impossible to determine where I went wrong so just forget my entire post!
Thanks for your comment.
Ted |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Aug 30, 2010 2:03 am Post subject: |
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ERs (6,7,2)
XY-Wing (149)
34 UR; r5c5=1
XY-Loop
34 UR; r2c15=59 |
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