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immpy
Joined: 06 May 2017
Posts: 574
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 Posted: Tue Jun 28, 2022 6:52 pm Post subject: VH+ 062822 |
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Hello all, enjoy the puzzle.
| Code: |
+-------+-------+-------+
| 2 6 . | . . . | . 3 . |
| . 8 7 | . . 2 | . . 9 |
| . . . | 7 3 . | . . . |
+-------+-------+-------+
| . . . | 4 9 . | . . . |
| . 9 . | 8 . 1 | . 4 . |
| . . . | . 6 3 | . . . |
+-------+-------+-------+
| . . . | . 1 8 | . . . |
| 4 . . | 6 . . | 3 2 . |
| . 5 . | . . . | . 1 8 |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site
cheers...immp |
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TomC
Joined: 30 Oct 2020
Posts: 359
Location: Wales
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| Posted: Wed Jun 29, 2022 10:24 am Post subject: |
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1st step, remove <4> from r1c6 with 457 XY wing abc
| Code: |
+---------------------+------------------+------------------------+
| 2 6 15 | 9 8 -45 | 1457 3 1457 |
| 3 8 7 | 1 b45 2 | 456 56 9 |
| 159 4 159 | 7 3 6 | 1258 58 125 |
+---------------------+------------------+------------------------+
| 15678 237 12356 | 4 9 57 | 125678 5678 123567 |
| 567 9 2356 | 8 257 1 | 2567 4 23567 |
| 1578 27 4 | 25 6 3 | 125789 5789 1257 |
+---------------------+------------------+------------------------+
| 679 237 2369 | 235 1 8 | 45679 5679 4567 |
| 4 1 8 | 6 a57 9 | 3 2 57 |
| 679 5 2369 | 23 247 c47 | 4679 1 8 |
+---------------------+------------------+------------------------+
|
Play this puzzle online at the Daily Sudoku site
2nd step remove <7> from r6c9 (and others) with X wing on <7> in r67c28
3rd step remove <5> from r6c9 with XY chain abcd pincers on <5> in a+d
basic moves lead to remove <2> from r6c2 to solve
| Code: |
+------------------+--------------+----------------------+
| 2 6 1 | 9 8 5 | 47 3 47 |
| 3 8 7 | 1 4 2 | 56 56 9 |
| 59 4 59 | 7 3 6 | 12 8 12 |
+------------------+--------------+----------------------+
| 18 23 2356 | 4 9 7 | 12568 56 12356 |
| 567 9 2356 | 8 b25 1 | 2567 4 23567 |
| 18 x27 4 | a25 6 3 | 125789 x79 12-57 |
+------------------+--------------+----------------------+
| 679 x237 2369 | 235 1 8 | 45679 x79 4567 |
| 4 1 8 | 6 c57 9 | 3 2 d57 |
| 679 5 2369 | 23 27 4 | 679 1 8 |
+------------------+--------------+----------------------+
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Play this puzzle online at the Daily Sudoku site |
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dongrave
Joined: 06 Mar 2014
Posts: 572
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| Posted: Wed Jun 29, 2022 8:12 pm Post subject: |
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| Nice going Tom! And thanks for the puzzle immp! I really enjoyed that. I used a pencil and paper and saw that if r8c9 was 7, you'd reach a contradiction (i.e. 7 in r4c6 and in r4c8) which solved it in one step - but boy what a step! |
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immpy
Joined: 06 May 2017
Posts: 574
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| Posted: Tue Jul 05, 2022 9:11 pm Post subject: |
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| Always welcome dongrave. |
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