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Free Press March 22, 2013

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keith

Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

Posted: Fri Mar 22, 2013 3:58 pm Post subject: Free Press March 22, 2013

Code:

Puzzle: FP032213
+-------+-------+-------+
| 9 3 . | 7 . 5 | . . . |
| 7 . . | . 6 4 | . . 2 |
| . . 6 | . . . | . . . |
+-------+-------+-------+
| . . . | . . . | 5 . 8 |
| . . 8 | 5 . 6 | 1 . . |
| 4 . 9 | . . . | . . . |
+-------+-------+-------+
| . . . | . . . | 6 . . |
| 8 . . | 6 7 . | . . 4 |
| 5 . . | 3 . 9 | . 7 . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site

Keith

Marty R.

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

Posted: Sat Mar 23, 2013 12:10 am Post subject:

Code:

+----------------+------------------+--------------+
| 9 3 12 | 7 128 5 | 4 18 6 |
| 7 8 5 | 19 6 4 | 39 139 2 |
| 12 4 6 | 1289 12389 1238 | 7 189 5 |
+----------------+------------------+--------------+
| 6 127 1237 | 249 2349 237 | 5 2349 8 |
| 23 27 8 | 5 2349 6 | 1 2349 379 |
| 4 5 9 | 128 1238 12378 | 23 6 37 |
+----------------+------------------+--------------+
| 123 1279 12347 | 1248 5 128 | 6 239 39 |
| 8 129 123 | 6 7 12 | 239 5 4 |
| 5 6 24 | 3 24 9 | 8 7 1 |
+----------------+------------------+--------------+

Play this puzzle online at the Daily Sudoku site

I've wasted too much time on this. I see an X-Wing on 2 and a Finned X-Wing on 3, but see nothing that will do any good.

keith

Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

Posted: Sat Mar 23, 2013 2:04 am Post subject:

Marty, After the X-Wing: W-wing 12-24-24-12 XY-wing 1-29. Keith

JC Van Hay

Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium

Posted: Sat Mar 23, 2013 6:03 am Post subject:

#1. Singles + Locked Candidates; U41

Solving the XWing(2R19) ...

Code:

+---------------------+--------------------+--------------------+
| 9 3 12 | 7 128 5 | 4 18 6 |
| 7 8 5 | 19 6 4 | (39) 139 2 |
| 12 4 6 | 1289 12389 1238 | 7 189 5 |
+---------------------+--------------------+--------------------+
| 6 127 12(37) | 249 2349 237 | 5 2349 8 |
| 23 2(7) 8 | 5 2349 6 | 1 2349 39(7) |
| 4 5 9 | 128 1238 12378 | 2(3) 6 (37) |
+---------------------+--------------------+--------------------+
| 123 1279 -124(37) | 1248 5 128 | 6 239 (39) |
| 8 129 12(3) | 6 7 12 | 2(39) 5 4 |
| 5 6 24 | 3 24 9 | 8 7 1 |
+---------------------+--------------------+--------------------+

#2. Chain[7] : 7r7c3=7r4c3-7r5c2=7r5c9-(7=3)r6c9-[3r6c7 and (3=9)r7c9-9r8c7=(9-3)r2c7]=3r8c7-3r8c3=HP(37)r47c3 :=> -124r7c3 (r9c3=4,r9c5=2);stte
Or as a Kraken 3C7 ... -> 7r7c3=HP(37)r47c3 :=> -124r7c3; stte

Code:

(3-9)r2c7=9r8c7-(9=3)r7c9-(3=7)r6c9-7r5c9=7r5c2-7r4c3=7r7c3
||
3r6c7---------------------(3=7)r6c9-7r5c9=7r5c2-7r4c3=7r7c3
||
3r8c7-3r8c3=HP(37)r47c3

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