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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Thu Sep 09, 2010 5:37 am Post subject: Puzzle 10/09/09: B |
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| Code: | +-----------------------+
| 7 . . | . 1 . | . . . |
| . 8 . | . . 9 | . . . |
| . . 9 | . 6 7 | 1 . . |
|-------+-------+-------|
| . . . | . . 8 | . 5 . |
| . . 4 | . . . | 7 2 . |
| . 2 . | 9 3 . | . 6 . |
|-------+-------+-------|
| . . 6 | . . . | . . . |
| . . . | 1 8 3 | 4 . . |
| . . . | . . . | . . 9 |
+-----------------------+
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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: Thu Sep 09, 2010 7:49 am Post subject: |
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Fun puzzle! Found it quite tough within the rating.. Three steps for me
| Quote: | kite(5) ; r1c7<>5
grouped kite(2) ; r1c7<>2
xyz-wing(46-3) r1c2 ; r1c3<>3 |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Fri Sep 10, 2010 3:44 pm Post subject: |
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I cruised around with a variety of fun, but apparently non-productive, steps for a total of seven moves.
AUR(27)r49c45 External SIS: r9c7=2, r9c2=7
(2=7)r4c4-r79c4=r9c5-AUR(27)r49c45[(7)r9c2=(2-5)r9c7]=r7c79-(5=2)r7c6; r79c4<>2
ALS-xz A:(235)r1c36, B:(234)r3c12, x=3, z=2
(2)r1c6-r123c4=r4c4; r3c4<>2
skyscraper 5 r39c4; r12c7, r7c9<>5
xy-wing 3-45 vertex (35)e1c3 pseudocell (45)r1c6|r2c5; t2c1,r3c4<>4
plus transport (4)42c5-r2c8=(5)r23c8; r3c1<>4
plus transport r3c2-r3c8=r2c8; r2c4<>4
(3=4)r3c2-r3c8=r2c8-(4=2)r2c5-(2=5)r1c6-(5=3)r1c3; r1c2, r2c13,r3c1<>3
AXY-wing -346 vertex (46)r1c2 pincers (36)r1c7 & (34)r3c2 with fin (2)r1c7
If xy-wing is true; r3c8<>3
If fin is true; (2)r1c7-r1c6=r7c6-(2=8)r7c9-(8=13)r79c8-(3)r3c8
AXY-wing -348 vertex (48)r3c8, pincers (34)r2c8 & (38)r3c4 with fin (5)r3c4
If xy-wng is true r2c4<>3
If fin is true (5)r3c4-(5=8_r3c9-(8-4)r3c8-(4=3)r2c8; r2c4<>3
Ted |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Fri Sep 10, 2010 10:30 pm Post subject: |
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| ERs (2,5) removed both numbers from r1c7, setting up an XYZ-Wing (346). |
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