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Puzzle 10/07/23: C

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Fri Jul 23, 2010 11:39 am    Post subject: Puzzle 10/07/23: C Reply with quote
Code:
 +-----------------------+
 | 1 . . | . . . | . . . |
 | . 2 . | . 1 . | . . 5 |
 | . . 4 | . . 9 | . . . |
 |-------+-------+-------|
 | . . . | . . . | . 6 . |
 | . 4 . | . 2 . | . 1 9 |
 | . . 9 | . . 8 | 5 2 . |
 |-------+-------+-------|
 | . 6 . | . . . | . . . |
 | . . . | 8 . 3 | . 9 2 |
 | 5 . . | 4 . . | 3 8 . |
 +-----------------------+

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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat Jul 24, 2010 4:18 am    Post subject: Reply with quote
Type 3 UR (38) with pseudo cell 56
Type 2 UR (38-5)
X-Wing (6)
XY-Wing (673)
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Sat Jul 24, 2010 1:30 pm    Post subject: Reply with quote
Three steps - same ending as Marty but UR are near the end of my solving toolkit so a different path!

x-wing(6)
w-wing(35) (3=5)r4c2 - r3c2=r3c4 - (5=3)r5c4; r5c13<>3, r4c46<>3
xy-wing(67-3) r3c1; r2c8<>3, r3c2<>3
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Sat Jul 24, 2010 3:36 pm    Post subject: Reply with quote
The URs jumped out at me so my sequence was more like Marty's.

Type 3 UR (38)r57c13; r5c4<>56

Type 2 UR (38)r13c25; r5c2<>5

6-cell ADP (17)r468c234: r4c3=5, r4c4=5, r4c4=9, or r6c4=6 to prevent the DP
(5)r4c3-(5=7)r4c6; r4c34,r6c4<>7
(5)r4c4-(5=7)r4c6; r4c34,r6c4<>7
(9)r4c4-(9=7)r4c5; r4c34,r6c4<>7
(6)r6c4-(6=5)r5c6-(5=7)r4c6; r4c34,r6c4<>7

Flightless xy-wing 16-7 vertex (16)r6c4 plus transport (7)r6c2-r6c1=(7)r3c1; r2c3,r3c4<>7

w-wing 37 r1c3 & r3c8 SL (3)r13c5 r1c8,r3c1<>7

No idea if all steps were productive, but they were enjoyable.

Ted
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