.
I would call it trivial if one uses the tridagon pattern:
- Code: Select all
Resolution state after Singles and whips[1]:
+----------------------+----------------------+----------------------+
! 8 9 367 ! 13467 13467 367 ! 367 2 5 !
! 13457 1456 3567 ! 23678 367 23678 ! 9 3467 367 !
! 2 46 367 ! 367 9 5 ! 1 3467 8 !
+----------------------+----------------------+----------------------+
! 137 16 9 ! 5 2 367 ! 367 8 4 !
! 357 2568 235678 ! 9 367 4 ! 23567 367 1 !
! 357 256 4 ! 367 8 1 ! 23567 9 367 !
+----------------------+----------------------+----------------------+
! 459 3 58 ! 4678 4567 6789 ! 678 1 2 !
! 459 2458 1 ! 234678 34567 236789 ! 3678 367 3679 !
! 6 7 28 ! 1238 13 2389 ! 4 5 39 !
+----------------------+----------------------+----------------------+
185 candidates.
hidden-pairs-in-a-column: c7{n2 n5}{r5 r6} ==> r6c7≠7, r6c7≠6, r6c7≠3, r5c7≠7, r5c7≠6, r5c7≠3
hidden-pairs-in-a-row: r2{n2 n8}{c4 c6} ==> r2c6≠7, r2c6≠6, r2c6≠3, r2c4≠7, r2c4≠6, r2c4≠3
hidden-pairs-in-a-row: r1{n1 n4}{c4 c5} ==> r1c5≠7, r1c5≠6, r1c5≠3, r1c4≠7, r1c4≠6, r1c4≠3
- Code: Select all
+----------------------+----------------------+----------------------+
! 8 9 367 ! 14 14 367# ! 367# 2 5 !
! 13457 1456 3567 ! 28 367# 28 ! 9 3467 367# !
! 2 46 367 ! 367# 9 5 ! 1 3467#@ 8 !
+----------------------+----------------------+----------------------+
! 137 16 9 ! 5 2 367# ! 367# 8 4 !
! 357 2568 235678 ! 9 367# 4 ! 25 367# 1 !
! 357 256 4 ! 367# 8 1 ! 25 9 367# !
+----------------------+----------------------+----------------------+
! 459 3 58 ! 4678 4567 6789 ! 678 1 2 !
! 459 2458 1 ! 234678 34567 236789 ! 3678 367 3679 !
! 6 7 28 ! 1238 13 2389 ! 4 5 39 !
+----------------------+----------------------+----------------------+
tridagon for digits 3, 6 and 7 in blocks:
b3, with cells (marked #): r3c8 (target cell, marked @), r2c9, r1c7
b2, with cells (marked #): r3c4, r2c5, r1c6
b6, with cells (marked #): r5c8, r6c9, r4c7
b5, with cells (marked #): r5c5, r6c4, r4c6
==> r3c8≠3,6,7
S2-tte (singles + 1 x-wing)
PS: I remember talking about a T&E(3) puzzle falling down to W2 after using the tridagon. Not sure if it was that one or a different one.
.