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Eureka 2532 June 15 diabolical

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arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Sat Jun 16, 2012 5:31 am Post subject: Eureka 2532 June 15 diabolical

Code:

*-----------*
|..6|74.|9..|
|.1.|...|...|
|...|25.|...|
|---+---+---|
|.5.|.9.|.4.|
|829|...|71.|
|.7.|.6.|.3.|
|---+---+---|
|4..|.15|...|
|...|...|.6.|
|..8|.73|1..|
*-----------*

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tlanglet

Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

Posted: Sat Jun 16, 2012 2:01 pm Post subject:

Code after basics:

Code:

*--------------------------------------------------*
| 23 8 6 | 7 4 1 | 9 5 23 |
| 29 1 5 | 3 8 69 | 246 27 247 |
| 39 4 7 | 2 5 69 | 36 8 1 |
|----------------+----------------+----------------|
| 6 5 3 | 1 9 7 | 28 4 28 |
| 8 2 9 | 5 3 4 | 7 1 6 |
| 1 7 4 | 8 6 2 | 5 3 9 |
|----------------+----------------+----------------|
| 4 369 2 | 69 1 5 | 38 79 378 |
| 7 39 1 | 49 2 8 | 34 6 5 |
| 5 69 8 | 469 7 3 | 1 29 24 |
*--------------------------------------------------*

(3)r8c7=(3)r7c79-AUR(69)r7924[(3)r7c2=(4)r9c4]-(4=2)r9c9-r12c9=r2c78-(2=9)r2c1-(9=3)r3c1; r3c7<>3

BUG+3; r2c7<>2
(2)r2c9;
||
(9)r7c2-(9=7)r7c8-(7=2)r2c8;
||
(9)r9c4-(9=4)r8c4-(4=3=8=2)r874c7;

A one step solution is an almost xy-wing
axy-wing(23-7)r1c9+r2c8|r7c9=(8)r7c9-(8=2)r4c9-r9c9=(2-9)r9c8=(9)r7c8; r7c8<>7

Ted

Last edited by tlanglet on Sat Jun 16, 2012 2:12 pm; edited 1 time in total

arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Sat Jun 16, 2012 2:07 pm Post subject:

Code:

*--------------------------------------------------*
| 23 8 6 | 7 4 1 | 9 5 23 |
| 29 1 5 | 3 8 69 | 246 c27 d27-4 |
| 39 4 7 | 2 5 69 | 36 8 1 |
|----------------+----------------+----------------|
| 6 5 3 | 1 9 7 | 28 4 28 |
| 8 2 9 | 5 3 4 | 7 1 6 |
| 1 7 4 | 8 6 2 | 5 3 9 |
|----------------+----------------+----------------|
| 4 369 2 | 69 1 5 | 38 79 378 |
| 7 39 1 | 49 2 8 | 34 6 5 |
| 5 69 8 | 469 7 3 | 1 b29 a24 |
*--------------------------------------------------*
h3-wing
(4=2)r9c9-r9c8=(2-7)r2c8=7r2c9 => -4r2c9; stte

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daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Sat Jun 16, 2012 9:45 pm Post subject:

A multi-step alternative.

Code:

<24+3> XY-Wing r9c9/r1c9+r8c7 <> 3 r3c7,r7c9

r79c24 <69> UR Type 6.2233 <> 9 r7c4,r9c2

BUG+1 = 2 r2c9

Marty R.

Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

Posted: Sun Jun 17, 2012 4:27 am Post subject:

Same three moves as Danny.

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