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Puzzle 10/02/12 (B)

dailysudoku.com Forum Index -> Puzzles by daj

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daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Fri Feb 12, 2010 6:55 pm Post subject: Puzzle 10/02/12 (B)

Code:

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

Play this puzzle online at the Daily Sudoku site

arkietech

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

Posted: Sun Feb 14, 2010 7:10 am Post subject:

I used two steps:

Code:

*-----------------------------------------------------------*
| 78 1 578 | 58 6 3 | 9 2 4 |
| 4 6 9 | 1 2 7 | 8 5 3 |
| 3 2 58 | 4589 4589 589 | 1 7 6 |
|-------------------+-------------------+-------------------|
| 78 3 1 | 6 5789 2 | 57 4 5789 |
| 2 4 6 | 5789 1 589 | 3 89 5789 |
| 9 5 78 | 3 78 4 | 6 1 2 |
|-------------------+-------------------+-------------------|
| 56 9 2 | 578 3 1 | 4 68 578 |
| 1 7 4 | 2589 589 6 | 25 3 589 |
| 56 8 3 | 247 47 59 | 27 69 1 |
*-----------------------------------------------------------*
(5=8)r1c4 - r3c6 = r5c6 - r6c5 = r6c3 - (8=5)r3c3; r1c3,r3c456<>5

*-----------------------------------------------------------*
| 78 1 78 | 5 6 3 | 9 2 4 |
| 4 6 9 | 1 2 7 | 8 5 3 |
| 3 2 5 | 489 489 89 | 1 7 6 |
|-------------------+-------------------+-------------------|
| 78 3 1 | 6 5789 2 | 57 4 5789 |
| 2 4 6 | 789 1 589 | 3 89 5789 |
| 9 5 78 | 3 78 4 | 6 1 2 |
|-------------------+-------------------+-------------------|
| 56 9 2 | 78 3 1 | 4 68 578 |
| 1 7 4 | 289 589 6 | 25 3 589 |
| 56 8 3 | 247 47 59 | 27 69 1 |
*-----------------------------------------------------------*
DP 59 r8c9 <> 59

daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Sun Feb 14, 2010 5:21 pm Post subject:

Code:

r57 X-Wing <> 7 r4c9,r9c4

r6c6 2-String Kite <> 8 r3c3

c57 X-Wing <> 5 r48c9

<79+8> XYZ-Wing r5c4/r5c8+r6c5 <> 8 r5c6
<58+9> XYZ-Wing r8c5/r8c9+r9c6 <> 9 r8c4

Either of the XYZ-Wings can be skipped, but I needed an X-Wing and XY-Wing later to complete the puzzle.

I'm going to post just (A)-class puzzles for awhile.

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