Hi, what i was trying was to find subgrids of extremely hard puzzles, where still eliminations are possible. I dont have any idea so far, how to deduce the eliminations, but it looks easier to find them in the subgrid.
Since my program is very new and probably buggy, my question is, if someone can verify the eliminations in the 2 samples below (the second puzzle is from champagnes list of 18 hardest). Maybe this is possible with XSudo.
- Code: Select all
12.3.....4.5...6...7.....2.6..1..3....453.........8..9...45.1.........8......2..7;11.90;11.90;2.60;elev;1;5
*--------------------------------------------------------------------*
| 1 2 689 | 3 46789 45679 | 45789 4579 458 |
| 4 389 5 | 2789 12789 179 | 6 1379 138 |
| 389 7 3689 | 689 14689 14569 | 4589 2 13458 |
|-----------------------+---------------------+----------------------|
| 6 589 2789 | 1 2479 479 | 3 457 2458 |
| 2789 189 4 | 5 3 679 | 278 167 1268 |
| 2357 135 1237 | 267 2467 8 | 2457 14567 9 |
|-----------------------+---------------------+----------------------|
| 23789 3689 23789 | 4 5 3679 | 1 369 236 |
| 23579 134569 12379 | 679 1679 13679 | 2459 8 23456 |
| 359 134569 139 | 689 1689 2 | 459 34569 7 |
*--------------------------------------------------------------------*
23 groups locked, 31 cells locked, 31/110 candidates could be eliminated
*-------------------------------------------------*
| . 2 . | . . 45679 | . 4579 458 |
| . 389 . | . . 179 | . 1379 138 |
| . 7 . | . . 14569 | . 2 13458 |
|---------------+--------------+------------------|
| . 589 . | . . 479 | . 457 2458 |
| . 189 . | . . 679 | . 167 1268 |
| . 135 . | . . 8 | . 14567 9 |
|---------------+--------------+------------------|
| . 3689 . | . . 3679 | . 369 236 |
| . 134569 . | . . 13679 | . 8 23456 |
| . 134569 . | . . 2 | . 34569 7 |
*-------------------------------------------------*
r1c6<>4, r1c6<>5, r1c6<>7, r1c6<>9, r1c8<>7, r1c8<>9, r1c9<>8, r3c6<>1, r3c6<>4, r3c6<>6, r3c6<>9, r3c9<>4, r3c9<>5, r3c9<>8, r4c6<>7, r4c6<>9, r4c8<>4, r4c9<>4, r5c6<>6, r6c8<>6, r6c8<>7, r7c6<>6, r8c2<>3, r8c2<>9, r8c6<>6, r8c6<>7, r8c6<>9, r8c9<>2, r8c9<>3, r9c2<>9, r9c8<>9
- Code: Select all
..34..7...5...9.2.....1....23.....5...1.6.3..8..........46..........8.9....17.6.. ;5416;elev;11.1;1.2 ;1.2 ;8
*-------------------------------------------------------------------*
| 169 12689 3 | 4 258 256 | 7 168 1589 |
| 1467 5 678 | 378 38 9 | 148 2 13468 |
| 4679 246789 2789 | 2578 1 23567 | 4589 3468 34589 |
|----------------------+----------------------+---------------------|
| 2 3 679 | 789 48 147 | 1489 5 146789 |
| 4579 479 1 | 25789 6 2457 | 3 478 24789 |
| 8 4679 5679 | 23579 2345 123457 | 1249 1467 124679 |
|----------------------+----------------------+---------------------|
| 1357 1278 4 | 6 9 235 | 1258 1378 123578 |
| 13567 1267 2567 | 235 2345 8 | 1245 9 123457 |
| 359 289 2589 | 1 7 2345 | 6 348 23458 |
*-------------------------------------------------------------------*
23 groups locked, 32 cells locked, 12/108 candidates could be eliminated
*-----------------------------------------------------------------*
| . . . | . . . | . . . |
| 1467 5 678 | 378 38 9 | 148 2 13468 |
| . . . | . . . | . . . |
|--------------------+----------------------+---------------------|
| 2 3 679 | 789 48 147 | 1489 5 146789 |
| . . . | . . . | . . . |
| 8 4679 5679 | 23579 2345 123457 | 1249 1467 124679 |
|--------------------+----------------------+---------------------|
| . . . | . . . | . . . |
| 13567 1267 2567 | 235 2345 8 | 1245 9 123457 |
| . . . | . . . | . . . |
*-----------------------------------------------------------------*
r2c9<>8, r4c9<>8, r4c9<>9, r6c2<>9, r6c6<>2, r6c6<>5, r6c9<>2, r6c9<>9, r8c1<>5, r8c2<>2, r8c9<>2, r8c9<>5