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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Mon Mar 28, 2011 3:59 pm Post subject: Puzzle 11/03/28: ~ Moderate (BBDB?) |
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| Code: | +-----------------------+
| . . . | . . . | 6 9 . |
| . 7 . | 6 . . | 8 3 2 |
| . . 2 | 8 . . | 5 . . |
|-------+-------+-------|
| . 5 4 | 2 6 . | 7 . 1 |
| . . . | 5 8 . | . . . |
| . . . | . . . | 2 . . |
|-------+-------+-------|
| 2 4 7 | 9 . 8 | . 6 . |
| 5 8 . | . . . | 3 7 . |
| . 6 . | 1 . . | . . . |
+-----------------------+
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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: Mon Mar 28, 2011 5:15 pm Post subject: |
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I used five moves - and one of them wasn't "moderate"
| Quote: | skyscraper(3) r3, r4 ; r6c2<>3
type-1 UR(36) ; r6c3<>36
xy-chain ; (4=7)r1c9 - (7=3)r1c4 - (3=1)r1c2 - (1=4)r2c1 ; r1c1<>4
xy-wing(34-7) r3c7 ; r1c5<>7, r3c9<>7
BUG+1 |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Mon Mar 28, 2011 6:31 pm Post subject: |
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| peterj wrote: | I used five moves - and one of them wasn't "moderate"
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I've been treating the 4-cell XY-Chain as "moderate" because of all the times they've been identified as an XY-Wing with an extended pincer ... or an XY-Wing with a pseudo-cell. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Tue Mar 29, 2011 4:52 am Post subject: |
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Kite; r4c6, r6c23<>3
XYZ-Wing (347); r3c5<>7
XY-Chain; r2c56<>4
XY-Wing (157); r6c5<>7
BUG+2 |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Tue Mar 29, 2011 2:35 pm Post subject: |
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I also found a couple of five step solutions; here is one of them......
#1: Type 1 UR(36)r56c39; r56c39; r6c3<>36
#2: Kite (3) pivot b2; r6c2<>3
#3: Almost AIC with (45=1)r2c6; r3c6<>7
If r2c6=(45) then: (7=5)r9c6-(5=4)r2c6-(4=1)r2c1-(1=3)r1c2-(3=7)r1c4;
If r2c6=(1) then: (1)r2c6-(1=7)r5c6;
#4: xy-wing (37-4) vertex (37)r1c4; r3c9<>4
#5: BUG+1; r6c1=1
Ted |
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