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- Code: Select all
Resolution state after Singles and whips[1]:
+----------------------+----------------------+----------------------+
! 1 3569 3456 ! 2 68 3689 ! 458 7 458 !
! 26 2567 8 ! 167 4 167 ! 125 3 9 !
! 2349 2379 234 ! 13789 178 5 ! 6 248 1248 !
+----------------------+----------------------+----------------------+
! 7 12368 12346 ! 1689 1268 1689 ! 1248 5 12468 !
! 268 12568 1256 ! 15678 3 4 ! 9 268 12678 !
! 2468 12568 9 ! 15678 125678 1678 ! 12478 2468 3 !
+----------------------+----------------------+----------------------+
! 3689 4 136 ! 135678 15678 2 ! 3578 689 5678 !
! 2368 2368 7 ! 3568 9 368 ! 23458 1 24568 !
! 5 123689 1236 ! 4 1678 13678 ! 2378 2689 2678 !
+----------------------+----------------------+----------------------+
235 candidates
After applying T&E(2, W1), the resolution state is:
- Code: Select all
+----------------------+----------------------+----------------------+
! 1 39 456 ! 2 68 39 ! 58 7 458 !
! 26 256 8 ! 17 4 167 ! 125 3 9 !
! 2349 7 23 ! 39 18 5 ! 6 24 18 !
+----------------------+----------------------+----------------------+
! 7 1368 1346 ! 1689 12 1689 ! 1248 5 12468 !
! 268 12568 125 ! 15678 3 4 ! 9 268 2678 !
! 468 12568 9 ! 15678 1257 1678 ! 1278 2468 3 !
+----------------------+----------------------+----------------------+
! 389 4 136 ! 135678 1567 2 ! 3578 689 5678 !
! 238 2368 7 ! 3568 9 368 ! 345 1 2456 !
! 5 123689 1236 ! 4 17 13678 ! 378 2689 2678 !
+----------------------+----------------------+----------------------+
196 candidates
i.e. 39 candidates have been eliminated but only one non-given decided value has been found: r3c2=7
This is not enough to prove that no other one could be found: although all the known valid puzzles are in T&E(2), this doesn't imply anything about multi-solution ones.