## AU Tough January 23, 2013

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### AU Tough January 23, 2013

Code: Select all
` *-----------* |8..|...|4.6| |...|9.3|.5.| |..1|.5.|...| |---+---+---| |5..|..8|.3.| |...|...|...| |.2.|7..|..9| |---+---+---| |...|.6.|7..| |.6.|4.2|...| |1.3|...|..4| *-----------*`

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dan

ArkieTech

Posts: 3355
Joined: 29 May 2006
Location: NW Arkansas USA

### Re: AU Tough January 23, 2013

w-wing (49) r3c2 + r4c5 / 4r2c13 = 4r2c5; 9 transported from r4c5 via r4c3 to r7c3 => r79c2 <> 9; stte

eureka: (9=4) r3c2 - r2c13 = r2c5 - (4=9) r4c5 - r4c3 = r7c3 => r79c2 <> 9; stte

Leren
Leren

Posts: 3734
Joined: 03 June 2012

### Re: AU Tough January 23, 2013

I initially found Leren's w-wing(49) but used the SL 4b2. I then looked for another solution but in the short time I had, I only found an ANS that used much of the same logic as the w-wing:

ANS(4=59)r79c2-(9=4)r3c2-r3c6=r2c5-(4=9)r4c5-r4c3=r7c3 Conflict => r7c2=4

Ted
tlanglet
2010 Supporter

Posts: 538
Joined: 29 May 2010

### Re: AU Tough January 23, 2013

Code: Select all
`+-------------+-----------+-----------+| 8   3   5   | 12 27  17 | 4  9   6  || 246 7   246 | 9  48  3  | 1  5   28 || 249 49  1   | 68 5   46 | 3  7   28 |+-------------+-----------+-----------+| 5   1   49  | 26 49  8  | 26 3   7  || 469 8   7   | 3  249 46 | 5  246 1  || 3   2   46  | 7  1   5  | 8  46  9  |+-------------+-----------+-----------+| 249 459 249 | 15 6   19 | 7  8   3  || 7   6   8   | 4  3   2  | 9  1   5  || 1   59  3   | 58 78  79 | 26 26  4  |+-------------+-----------+-----------+`

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Two steps.

(9=4)r3c2-r3c6=r5c6-(4=9)r4c5-r4c3=r5c1=>r3c1<>9
(4=9)r3c2-(9=5)r9c2-(5=8)r9c4-(8=6)r3c4-(6=4)r3c6=>r3c1<>4, combined with above=>r3c1<>49=2
Marty R.

Posts: 1508
Joined: 23 October 2012
Location: Rochester, New York, USA

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