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Puzzle 10/08/21: A

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sat Aug 21, 2010 6:02 am    Post subject: Puzzle 10/08/21: A Reply with quote
Code:
 +-----------------------+
 | 5 . . | . . 6 | . 2 . |
 | . 1 . | . 5 . | . . 6 |
 | . . 9 | 1 . . | . . . |
 |-------+-------+-------|
 | . . 5 | . . 8 | 9 . . |
 | . 4 . | . 3 . | . . . |
 | 2 . . | 7 . 5 | 6 . 1 |
 |-------+-------+-------|
 | . . . | 5 . 1 | 3 . . |
 | 3 . . | . . . | . 8 . |
 | . 8 . | . . 3 | . . . |
 +-----------------------+

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JC Van Hay



Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
PostPosted: Sat Aug 21, 2010 6:09 pm    Post subject: Reply with quote
A 3 or 4 steps solution ....
Quote:
4-SIS AIC : (27)R9C5 7B7 (76)R4C1 (62)R4C4 : (2)r9c5=(2)r4c4 : r89c4<>2
Jellyfish : (7)R2478/c1679 or due to Cannibalized logic in r8c9 !!
.............X Wing : (7)R47/c19 : r8c9,r9c1<>7
.............&
.............X Wing : (7)R28/C67 : r359c67<>7
BUG+1 : r8c7=2
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Sat Aug 21, 2010 7:06 pm    Post subject: Reply with quote
Seem to be practising m-wings today! Three steps..
Quote:
m-wing(69) with pseudocell (9=2)r5c6-(2=6)r4c4 - r4c1=(6-9)r9c1=r9c4 ; r5c4<>9
x-wing(7) ; r9c1<>7, r8c9<>7
xy-wing(29-7) r8c9 ; r8c7<>7
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sun Aug 22, 2010 12:34 am    Post subject: Reply with quote
Looking at the potential DP 48-47-78, there are just two possibilities, r3c6=2 or r3c7=5. R3c7<>5 due to invalidity.
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Sun Aug 22, 2010 1:05 am    Post subject: Reply with quote
Also three steps, but could not resist the BUG_lite with concentration on ANP().......

Quote:
BUG_lite (478)r23c167: to prevent DP r3c7=2 or r3c7=5
(7=2)r3c5-BUG_lite (478)r23c167[(2)r3c6=(5)r3c7]-(5=7)r3c8; r3c67<>7
plus transport: (7)r3c5-r9c5=(7)r8c6 & (7)r3c8-r3c5=r9c5-r9c13=r7c1-r4c1=r5c3-r5c78=r4c9; r8c9<>7

ANP(26=9)r45c4-r5c6=r8c6-(9=2)r8c9-r4c9=r4c4; r89c4<>2

ANP(57=2)r5c78-r89c7=r8c9-r8c6=r3c6-(2=7)r3c5-r3c8=(7)r5c8; r3c8<>7

Ted
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