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Puzzle 10/07/18: BBDB turbot

dailysudoku.com Forum Index -> Puzzles by daj

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daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Sun Jul 18, 2010 3:27 am Post subject: Puzzle 10/07/18: BBDB turbot

Code:

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

Play this puzzle online at the Daily Sudoku site

tlanglet

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

Posted: Sun Jul 18, 2010 11:25 pm Post subject:

Two steps..........

Quote:

AXY-wing 1-47 vertex (17)r2c1, pincers (14)r1c2 & (47)r8c1 with fin (8)r8c1
If xy-wing is true: r8c2<>4
If fin it true: (8)r8c1-r56c1=r6c2-r6c5=(8)r8c5; r8c<>8 due to contradiction.

Flightless w-wing 17 in r2c1 & r4c5 SL (7)r8c15 plus transport (1)r4c5-r4c3=(1)r6c2: r1c2<>1

Ted

Marty R.

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

Posted: Mon Jul 19, 2010 12:40 am Post subject:

DP 48 boxes (28) makes some eliminations. W-Wing (14) XY-Wing (174) + pincer transport

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