100000002030040050006201400001706200000000000003102800008309700020060090300000006 56 28 26 m_b_metcalf
After solving 37 singles (and some naked/hidden subsets) this is the result:
1845.3..2.32648.5...62.14388917362452.5984.1..431528.9..8319724427865.9.319427586
- Code: Select all
+-----------+------------+-----------+
| 1 8 4 | 5 79 3 | 69 67 2 |
| 79 3 2 | 6 4 8 | 19 5 17 |
| 579 57 6 | 2 79 1 | 4 3 8 |
+-----------+------------+-----------+
| 8 9 1 | 7 3 6 | 2 4 5 |
| 2 67 5 | 9 8 4 | 36 1 37 |
| 67 4 3 | 1 5 2 | 8 67 9 |
+-----------+------------+-----------+
| 56 56 8 | 3 1 9 | 7 2 4 |
| 4 2 7 | 8 6 5 | 13 9 13 |
| 3 1 9 | 4 2 7 | 5 8 6 |
+-----------+------------+-----------+
Now I think there are 2 Skyscrapers :
(7)r5,32c29 =>r2c1<>7 and after eliminating the 7, the second (7)r6,21c18 =>r2c9<>7
That leaves r1c8 = 7 and no solution for 7's in row 2.
But there is a unique solution to the puzzle:
184573962932648157756291438891736245275984613643152879568319724427865391319427586
What happened...
2 skyscrapers in sequence is not a good idea.
After the first skyscraper you have to look for singles (stte)
and not for another skyscraper.
But in my solver I often search for more candidate eliminations during the same solving method
Edit: Typo 5->2 in box 7 corrected
