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Ajò Dimonios
Joined: 01 May 2017 Posts: 339 Location: Sassari Italy
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Posted: Wed May 24, 2017 11:49 am Post subject: Complex puzzle |
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Code: |
+------------------+--------------+-------------------+
| 6 139 1234 | 2359 7 8 | 1459 1459 5 |
| 3489 1389 5 | 369 16 1369 | 14789 2 78 |
| 7 189 128 | 259 4 129 | 3 1589 6 |
+------------------+--------------+-------------------+
| 1 2 34678 | 468 9 467 | 578 3578 3578 |
| 3489 36789 34678 | 1 68 5 | 2789 3789 2378 |
| 589 5789 78 | 28 3 27 | 125789 6 4 |
+------------------+--------------+-------------------+
| 2 3678 9 | 3468 5 346 | 478 3478 1 |
| 358 4 1378 | 389 18 139 | 6 3578 23578 |
| 358 13568 1368 | 7 2 1346 | 458 3458 9 |
+------------------+--------------+-------------------+
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Play this puzzle online at the Daily Sudoku site
Ciao a tutti
Paolo |
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Ajò Dimonios
Joined: 01 May 2017 Posts: 339 Location: Sassari Italy
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Posted: Wed May 24, 2017 3:53 pm Post subject: |
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Code: |
+------------------+--------------+---------------+
| 6 139 1234 | 239 7 8 | 49 14 5 |
| 3489 1389 5 | 369 16 1369 | 4789 2 78 |
| 7 189 128 | 5 4 129 | 3 18 6 |
+------------------+--------------+---------------+
| 1 2 34678 | 468 9 467 | 578 3578 378 |
| 348 3678 34678 | 1 68 5 | 2 9 378 |
| 589 5789 78 | 28 3 27 | 1 6 4 |
+------------------+--------------+---------------+
| 2 3678 9 | 3468 5 346 | 478 3478 1 |
| 358 4 1378 | 389 18 139 | 6 3578 2 |
| 358 13568 1368 | 7 2 1346 | 458 3458 9 |
+------------------+--------------+---------------+
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Play this puzzle online at the Daily Sudoku site
If r2c5=6 --> contradiction column 9 two 7 in r2c9 and r5c9, then r2c5=1
Code: |
+-----------+------------+-------------+
| 6 3 2 | 9 7 8 | 49 1 5 |
| 4 8 5 | 39 6 1 | 79 2 7 |
| 7 9 1 | 5 4 2 | 3 8 6 |
+-----------+------------+-------------+
| 1 2 67 | 46 9 46 | 578 57 378 |
| 3 67 4 | 1 8 5 | 2 9 7 |
| 9 5 8 | 2 3 7 | 1 6 4 |
+-----------+------------+-------------+
| 2 678 9 | 3468 5 346 | 478 347 1 |
| 58 4 37 | 389 1 39 | 6 357 2 |
| 58 1 36 | 7 2 346 | 458 345 9 |
+-----------+------------+-------------+
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Play this puzzle online at the Daily Sudoku site
Code: |
+-----------------+------------+--------------+
| 6 139 1234 | 239 7 8 | 49 14 5 |
| 3489 389 5 | 369 1 369 | 4789 2 78 |
| 7 189 128 | 5 4 29 | 3 18 6 |
+-----------------+------------+--------------+
| 1 2 6 | 48 9 47 | 578 578 3 |
| 348 378 3478 | 1 6 5 | 2 9 78 |
| 589 5789 78 | 28 3 27 | 1 6 4 |
+-----------------+------------+--------------+
| 2 3678 9 | 346 5 346 | 478 3478 1 |
| 35 4 137 | 39 8 139 | 6 357 2 |
| 358 13568 138 | 7 2 1346 | 458 3458 9 |
+-----------------+------------+--------------+
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Play this puzzle online at the Daily Sudoku site
If r2c4=9-->contradiction, two 7 in column 6, then -9 in r2c4
Code: |
+--------------+---------+-------------+
| 6 13 1234 | . 7 8 | 9 14 5 |
| 348 38 5 | 9 1 6 | 478 2 78 |
| 7 9 18 | 5 4 2 | 3 18 6 |
+--------------+---------+-------------+
| 1 2 6 | 48 9 7 | 578 578 3 |
| 348 378 3478 | 1 6 5 | 2 9 78 |
| 9 5 78 | 28 3 7 | 1 6 4 |
+--------------+---------+-------------+
| 2 378 9 | 6 5 4 | 478 3478 1 |
| 5 4 17 | 3 8 9 | 6 57 2 |
| 358 6 138 | 7 2 14 | 458 3458 9 |
+--------------+---------+-------------+
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Play this puzzle online at the Daily Sudoku site
If r2c6=9-->contradiction , two 8 in column 3, then -9 in r2c6.
Code: |
+---------------+---------+-------------+
| 6 1 2 | 3 7 8 | 9 4 5 |
| 348 38 5 | 6 1 9 | 478 2 78 |
| 7 9 8 | 5 4 2 | 3 18 6 |
+---------------+---------+-------------+
| 1 2 6 | 8 9 4 | 57 57 3 |
| 348 378 3478 | 1 6 5 | 2 9 78 |
| 9 5 8 | 2 3 7 | 1 6 4 |
+---------------+---------+-------------+
| 2 3678 9 | 4 5 36 | 78 378 1 |
| 35 4 137 | 9 8 13 | 6 357 2 |
| 358 368 138 | 7 2 136 | 458 3458 9 |
+---------------+---------+-------------+
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Play this puzzle online at the Daily Sudoku site
if R2c7=9 -->contradiction , two 3 in line 8(r8c4 and r8c8), then -9 in r2c7.
if R2c7=8 -->contradiction , r3c3=empty, then -8 in r2c7. Solution with basic strategies.
Code: |
+------------------+--------------+-------------------+
| 6 139 1234 | 2359 7 8 | 1459 1459 5 |
| 3489 1389 5 | 36 1 136 | 147 2 78 |
| 7 189 128 | 259 4 129 | 3 1589 6 |
+------------------+--------------+-------------------+
| 1 2 3678 | 468 9 467 | 578 578 3578 |
| 3489 36789 34678 | 1 68 5 | 2789 3789 2378 |
| 59 59 78 | 28 3 27 | 125789 6 4 |
+------------------+--------------+-------------------+
| 2 3678 9 | 3468 5 346 | 478 3478 1 |
| 358 4 1378 | 389 18 139 | 6 3578 23578 |
| 358 13568 1368 | 7 2 1346 | 458 3458 9 |
+------------------+--------------+-------------------+
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Play this puzzle online at the Daily Sudoku site
Ciao a tutti |
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JC Van Hay
Joined: 13 Jun 2010 Posts: 494 Location: Charleroi, Belgium
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Posted: Wed May 24, 2017 7:11 pm Post subject: |
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Basics : 6 singles; r6c12=59; {3B9, 4B5, 8R6C5} -> -{3r4c8, 4r4c3, 8r8c3}
(278)r6c346 : 8r6c3 -> 0 solution; r6c3=7; stte :
Code: | +------------------------+------------------+----------------------+
| 6 139 13-4(2) | 39(2) 7 8 | 49 14 5 |
| 389(4) 1389 5 | 369 16 1369 | 89(47) 2 8(7) |
| 7 189 128 | 5 4 129 | 3 18 6 |
+------------------------+------------------+----------------------+
| 1 2 3678 | 468 9 46(7) | 58(7) 58(7) 38(7) |
| 348 3678 34678 | 1 68 5 | 2 9 38(7) |
| 59 59 78 | 8(2) 3 (27) | 1 6 4 |
+------------------------+------------------+----------------------+
| 2 3678 9 | 3468 5 346 | 478 3478 1 |
| 358 4 137 | 389 18 139 | 6 3578 2 |
| 358 13568 1368 | 7 2 1346 | 458 3458 9 |
+------------------------+------------------+----------------------+
| [2r1c3=2r1c4-2r6c4=(2-7)r6c6=7r4c6-7r4c789=7r5c9-7r2c9=(7-4)r1c7=4r2c1]-4r1c3; 4 singles
Code: | +--------------------+--------------------+------------------+
| 6 139 13(2) | 39(2) 7 8 | 49 14 5 |
| 4 1389 5 | 369 16 1369 | 789 2 (78) |
| 7 189 (128) | 5 4 129 | 3 (18) 6 |
+--------------------+--------------------+------------------+
| 1 2 3678 | 468 9 467 | 578 578 378 |
| 38 38(67) 4 | 1 -8(6) 5 | 2 9 38(7) |
| 9 5 7(8) | (28) 3 27 | 1 6 4 |
+--------------------+--------------------+------------------+
| 2 3678 9 | 3468 5 346 | 478 3478 1 |
| 358 4 137 | 389 18 139 | 6 3578 2 |
| 358 1368 1368 | 7 2 1346 | 458 3458 9 |
+--------------------+--------------------+------------------+
| 6r5c5=(6-7)r5c2=7r5c9-(7=8=1)r2c9.r3c8-1r3c3=*S-Wing[8r6c4=8r6c3-(8=*2)r3c3-2r3c6=2r6c6]-(2=8)r6c4 => -8r5c5; 5 singles
Code: | +--------------------+----------------+----------------+
| 6 (139) 123 | (239) 7 8 | 49 14 5 |
| 4 389 5 | 369 1 369 | 789 2 78 |
| 7 18(9) (128) | 5 4 (29) | 3 18 6 |
+--------------------+----------------+----------------+
| 1 2 6 | 48 9 47 | 578 578 3 |
| 38 378 4 | 1 6 5 | 2 9 78 |
| 9 5 -8(7) | (28) 3 7(2) | 1 6 4 |
+--------------------+----------------+----------------+
| 2 3678 9 | 346 5 346 | 478 3478 1 |
| (35) 4 13(7) | (39) 8 139 | 6 (357) 2 |
| 358 1368 138 | 7 2 1346 | 458 3458 9 |
+--------------------+----------------+----------------+
| 3r1c4=*ALS-XY-Wing[(8=2=*9)r61c4-(9=357)r8c418-7r8c3=7r6c3]
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3r1c2=*[(8=2)r6c4-2r6c6=(2-9)r3c6=9r3c2-(9=*1)r1c2-1r3c3=W-Wing(28)r3c3.r6c4,2C6] => [8r6c4==8r3c3==7r6c3]-8r6c3; stte |
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