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Thanks for your solutions.
This is again a puzzle in which g-chains play a role: it is in gW4+Trid-OR5gW4 instead of W6+Trid-OR5-W6
- Code: Select all
hidden-pairs-in-a-row: r6{n3 n8}{c8 c9} ==> r6c9≠9, r6c9≠5, r6c9≠4, r6c8≠7, r6c8≠5, r6c8≠4, r6c8≠2
singles ==> r4c8=7, r6c4=7, r4c9=5
whip[1]: b6n9{r6c7 .} ==> r2c7≠9
hidden-pairs-in-a-block: b4{n5 n6}{r6c1 r6c3} ==> r6c3≠9, r6c3≠4, r6c3≠2, r6c1≠9, r6c1≠4, r6c1≠2
Trid-OR2-relation for digits 2, 9 and 4 in blocks:
b1, with cells (marked #): r1c2, r2c1, r3c3
b2, with cells (marked #): r1c4, r2c6, r3c5
b4, with cells (marked #): r6c2, r4c1, r5c3
b5, with cells (marked #): r6c6, r4c4, r5c5
with 2 guardians (in cells marked @): n1r1c2 n8r3c3
+-------------------------+-------------------------+-------------------------+
! 12489 1249#@ 3 ! 249# 5 6 ! 7 1248 1489 !
! 249# 5 7 ! 1 8 249# ! 246 2346 349 !
! 12489 6 2489#@ ! 3 249# 7 ! 5 1248 1489 !
+-------------------------+-------------------------+-------------------------+
! 249# 8 1 ! 249# 6 3 ! 249 7 5 !
! 3 7 249# ! 5 249# 8 ! 1249 124 6 !
! 56 249# 56 ! 7 1 249# ! 249 38 38 !
+-------------------------+-------------------------+-------------------------+
! 2459 2349 2459 ! 6 2349 1 ! 8 45 7 !
! 1456789 149 45689 ! 489 479 459 ! 3 1456 2 !
! 1245678 1234 24568 ! 248 2347 245 ! 146 9 14 !
+-------------------------+-------------------------+-------------------------+
z-chain[3]: r9n7{c1 c5} - c5n3{r9 r7} - r7n2{c5 .} ==> r9c1≠2
Trid-OR2-gwhip[4]: c1n7{r9 r8} - c1n8{r8 r123} - OR2{{n8r3c3 | n1r1c2}} - b7n1{r8c2 .} ==> r9c1≠6, r9c1≠5, r9c1≠4
Trid-OR2-gwhip[4]: c1n7{r8 r9} - c1n8{r9 r123} - OR2{{n8r3c3 | n1r1c2}} - b7n1{r8c2 .} ==> r8c1≠9, r8c1≠6singles ==> r6c1=6, r6c3=5, r9c6=5
z-chain[3]: c1n7{r9 r8} - r8n5{c1 c8} - r8n1{c8 .} ==> r9c1≠1
Trid-OR2-whip[4]: OR2{{n8r3c3 | n1r1c2}} - b7n1{r8c2 r8c1} - r8n5{c1 c8} - r8n6{c8 .} ==> r8c3≠8t-whip[4]: r8n5{c8 c1} - c1n7{r8 r9} - b7n8{r9c1 r9c3} - r9n6{c3 .} ==> r8c8≠6
singles ==> r9c7=6, r2c8=6, r2c9=3, r6c9=8, r6c8=3, r8c3=6, r5c7=1
Trid-OR2-whip[2]: OR2{{n1r1c2 | n8r3c3}} - b3n8{r3c8 .} ==> r1c8≠1
Trid-OR2-whip[3]: OR2{{n8r3c3 | n1r1c2}} - b7n1{r8c2 r8c1} - c8n1{r8 .} ==> r3c8≠8hidden-single-in-a-block ==> r1c8=8
z-chain[3]: r1n2{c2 c4} - r4n2{c4 c7} - b3n2{r2c7 .} ==> r3c1≠2
finned-swordfish-in-rows: n2{r3 r5 r7}{c5 c8 c3} ==> r9c3≠2
Trid-OR2-whip[3]: OR2{{n1r1c2 | n8r3c3}} - r9c3{n8 n4} - r9c9{n4 .} ==> r9c2≠1singles ==> r9c9=1, r3c8=1, r2c7=2, r6c6=2, r4c1=2, r5c8=2
Trid-OR2-whip[2]: OR2{{n1r1c2 | n8r3c3}} - b1n2{r3c3 .} ==> r1c2≠9, r1c2≠4
Trid-OR2-whip[2]: OR2{{n8r3c3 | n1r1c2}} - b1n2{r1c2 .} ==> r3c3≠9whip[1]: b1n9{r3c1 .} ==> r7c1≠9
naked-pairs-in-a-row: r7{c1 c8}{n4 n5} ==> r7c5≠4, r7c3≠4, r7c2≠4
Trid-OR2-whip[2]: OR2{{n8r3c3 | n1r1c2}} - b1n2{r1c2 .} ==> r3c3≠4whip[1]: b1n4{r3c1 .} ==> r7c1≠4, r8c1≠4
singles ==> r7c1=5, r7c8=4, r8c8=5
biv-chain[2]: c3n4{r9 r5} - b5n4{r5c5 r4c4} ==> r9c4≠4
biv-chain[3]: b2n2{r3c5 r1c4} - r9c4{n2 n8} - c3n8{r9 r3} ==> r3c3≠2
stte