.
Thanks for your solutions.
I said this puzzle was harder because it requires longer ORk-chains.
- Code: Select all
hidden-pairs-in-a-row: r9{n5 n8}{c2 c3} ==> r9c3≠9, r9c3≠7, r9c3≠2, r9c3≠1, r9c2≠9, r9c2≠7, r9c2≠6, r9c2≠2
whip[1]: c2n6{r3 .} ==> r1c1≠6, r3c1≠6
hidden-pairs-in-a-column: c9{n3 n4}{r3 r9} ==> r9c9≠9, r9c9≠7, r9c9≠2, r3c9≠9, r3c9≠5
whip[1]: c9n5{r6 .} ==> r4c7≠5
hidden-pairs-in-a-block: b6{n1 n5}{r4c9 r6c9} ==> r6c9≠9, r6c9≠7, r6c9≠2, r4c9≠9, r4c9≠7, r4c9≠2
The 4 impossible patterns that will be used:
- Code: Select all
OR3-anti-tridagon[12] for digits 2, 7 and 9 in blocks:
b4, with cells (marked #): r4c1, r5c3, r6c2
b6, with cells (marked #): r4c7, r5c9, r6c8
b7, with cells (marked #): r9c1, r8c3, r7c2
b9, with cells (marked #): r9c7, r8c8, r7c9
with 3 guardians (in cells marked @): n1r9c1 n6r9c1 n4r9c7
+-------------------------+-------------------------+-------------------------+
! 1279 26789 3 ! 4 5 168 ! 279 2789 279 !
! 1247 2578 12578 ! 13 138 9 ! 2457 2378 6 !
! 49 5689 589 ! 2 368 7 ! 459 1 34 !
+-------------------------+-------------------------+-------------------------+
! 279# 3 4 ! 179 12789 1258 ! 279# 6 15 !
! 5 1 279# ! 3679 23679 26 ! 8 4 279# !
! 8 279# 6 ! 179 4 125 ! 3 279# 15 !
+-------------------------+-------------------------+-------------------------+
! 3 279# 1279 ! 8 1279 4 ! 6 5 279# !
! 2679 4 279# ! 5 2679 3 ! 1 279# 8 !
! 12679#@ 58 58 ! 1679 12679 126 ! 2479#@ 2379 34 !
+-------------------------+-------------------------+-------------------------+
EL14c13-OR5-relation for digits: 2, 7 and 9
in cells (marked #): (r9c7 r7c2 r7c3 r7c9 r8c5 r8c3 r8c8 r5c3 r5c9 r6c2 r6c8 r4c5 r4c1 r4c7)
with 5 guardians (in cells marked @) : n4r9c7 n1r7c3 n6r8c5 n1r4c5 n8r4c5
+-------------------------+-------------------------+-------------------------+
! 1279 26789 3 ! 4 5 168 ! 279 2789 279 !
! 1247 2578 12578 ! 13 138 9 ! 2457 2378 6 !
! 49 5689 589 ! 2 368 7 ! 459 1 34 !
+-------------------------+-------------------------+-------------------------+
! 279# 3 4 ! 179 12789#@ 1258 ! 279# 6 15 !
! 5 1 279# ! 3679 23679 26 ! 8 4 279# !
! 8 279# 6 ! 179 4 125 ! 3 279# 15 !
+-------------------------+-------------------------+-------------------------+
! 3 279# 1279#@ ! 8 1279 4 ! 6 5 279# !
! 2679 4 279# ! 5 2679#@ 3 ! 1 279# 8 !
! 12679 58 58 ! 1679 12679 126 ! 2479#@ 2379 34 !
+-------------------------+-------------------------+-------------------------+
EL14c1s-OR5-relation for digits: 2, 7 and 9
in cells (marked #): (r1c9 r1c2 r1c1 r9c1 r7c9 r7c2 r8c8 r8c3 r5c9 r5c3 r6c8 r6c2 r4c7 r4c1)
with 5 guardians (in cells marked @) : n6r1c2 n8r1c2 n1r1c1 n1r9c1 n6r9c1
+-------------------------+-------------------------+-------------------------+
! 1279#@ 26789#@ 3 ! 4 5 168 ! 279 2789 279# !
! 1247 2578 12578 ! 13 138 9 ! 2457 2378 6 !
! 49 5689 589 ! 2 368 7 ! 459 1 34 !
+-------------------------+-------------------------+-------------------------+
! 279# 3 4 ! 179 12789 1258 ! 279# 6 15 !
! 5 1 279# ! 3679 23679 26 ! 8 4 279# !
! 8 279# 6 ! 179 4 125 ! 3 279# 15 !
+-------------------------+-------------------------+-------------------------+
! 3 279# 1279 ! 8 1279 4 ! 6 5 279# !
! 2679 4 279# ! 5 2679 3 ! 1 279# 8 !
! 12679#@ 58 58 ! 1679 12679 126 ! 2479 2379 34 !
+-------------------------+-------------------------+-------------------------+
EL13c171-OR4-relation for digits: 2, 7 and 9
in cells (marked #): (r8c5 r8c8 r8c3 r7c5 r7c9 r7c2 r6c8 r6c2 r5c9 r5c3 r4c5 r4c7 r4c1)
with 4 guardians (in cells marked @) : n6r8c5 n1r7c5 n1r4c5 n8r4c5
+-------------------------+-------------------------+-------------------------+
! 1279 26789 3 ! 4 5 168 ! 279 2789 279 !
! 1247 2578 12578 ! 13 138 9 ! 2457 2378 6 !
! 49 5689 589 ! 2 368 7 ! 459 1 34 !
+-------------------------+-------------------------+-------------------------+
! 279# 3 4 ! 179 12789#@ 1258 ! 279# 6 15 !
! 5 1 279# ! 3679 23679 26 ! 8 4 279# !
! 8 279# 6 ! 179 4 125 ! 3 279# 15 !
+-------------------------+-------------------------+-------------------------+
! 3 279# 1279 ! 8 1279#@ 4 ! 6 5 279# !
! 2679 4 279# ! 5 2679#@ 3 ! 1 279# 8 !
! 12679 58 58 ! 1679 12679 126 ! 2479 2379 34 !
+-------------------------+-------------------------+-------------------------+
biv-chain[3]: r3c1{n9 n4} - r2n4{c1 c7} - b3n5{r2c7 r3c7} ==> r3c7≠9
whip[1]: r3n9{c3 .} ==> r1c1≠9, r1c2≠9
z-chain[3]: r5n3{c5 c4} - c4n6{r5 r9} - c4n7{r9 .} ==> r5c5≠7
z-chain[3]: r5n3{c5 c4} - c4n6{r5 r9} - c4n9{r9 .} ==> r5c5≠9
Trid-OR3-whip[3]: OR3{{n6r9c1 n1r9c1 | n4r9c7}} - r2n4{c7 c1} - r3c1{n4 .} ==> r9c1≠9EL14c1s-OR3-whip[5]: r3n8{c3 c5} - b2n6{r3c5 r1c6} - OR3{{n6r1c2 n8r1c2 | n4r9c7}} - b3n4{r2c7 r3c9} - r3n3{c9 .} ==> r2c2≠8, r2c3≠8Trid-OR3-whip[5]: r2n4{c1 c7} - OR3{{n4r9c7 n1r9c1 | n6r9c1}} - r8n6{c1 c5} - b2n6{r3c5 r1c6} - r1n1{c6 .} ==> r2c1≠1EL13c171-OR4-whip[6]: c4n6{r9 r5} - r5n3{c4 c5} - r3c5{n3 n8} - r2c5{n8 n1} - OR4{{n1r4c5 n1r7c5 n8r4c5 | n6r8c5}} - r8c5{n2 .} ==> r9c5≠6Trid-OR3-whip[7]: r5c6{n2 n6} - b2n6{r1c6 r3c5} - b8n6{r8c5 r9c4} - r9c6{n6 n1} - OR3{{n1r9c1 n6r9c1 | n4r9c7}} - b3n4{r2c7 r3c9} - r3n3{c9 .} ==> r4c6≠2
Trid-OR3-whip[7]: r5c6{n2 n6} - b2n6{r1c6 r3c5} - b8n6{r8c5 r9c4} - r9c6{n6 n1} - OR3{{n1r9c1 n6r9c1 | n4r9c7}} - b3n4{r2c7 r3c9} - r3n3{c9 .} ==> r6c6≠2naked-pairs-in-a-row: r6{c6 c9}{n1 n5} ==> r6c4≠1
whip[6]: b5n2{r5c6 r4c5} - b6n2{r4c7 r6c8} - r8n2{c8 c1} - r8n6{c1 c5} - c4n6{r9 r5} - r5c6{n6 .} ==> r5c3≠2
Trid-OR3-whip[7]: r6n2{c2 c8} - b9n2{r8c8 r9c7} - b8n2{r9c5 r8c5} - r8n6{c5 c1} - OR3{{n6r9c1 n4r9c7 | n1r9c1}} - b1n1{r1c1 r2c3} - c3n2{r2 .} ==> r7c2≠2
Trid-OR3-whip[7]: c4n6{r9 r5} - c4n3{r5 r2} - c8n3{r2 r9} - r9c9{n3 n4} - OR3{{n4r9c7 n1r9c1 | n6r9c1}} - r9c6{n6 n2} - r5c6{n2 .} ==> r9c4≠1whip[7]: r8n6{c1 c5} - r3n6{c5 c2} - c2n9{r3 r6} - r6c4{n9 n7} - r9c4{n7 n9} - r5n9{c4 c9} - r7n9{c9 .} ==> r8c1≠9
EL14c13-OR5-whip[7]: b2n6{r1c6 r3c5} - b2n8{r3c5 r2c5} - r2n1{c5 c3} - c4n1{r2 r4} - OR5{{n1r4c5 n1r7c3 n6r8c5 n8r4c5 | n4r9c7}} - b3n4{r2c7 r3c9} - r3n3{c9 .} ==> r1c6≠1singles ==> r1c1=1, r7c3=1
- Code: Select all
+-------------------+-------------------+-------------------+
! 1 2678 3 ! 4 5 68 ! 279 2789 279 !
! 247 257 257 ! 13 138 9 ! 2457 2378 6 !
! 49 5689 589 ! 2 368 7 ! 45 1 34 !
+-------------------+-------------------+-------------------+
! 279 3 4 ! 179 12789 158 ! 279 6 15 !
! 5 1 79 ! 3679 236 26 ! 8 4 279 !
! 8 279 6 ! 79 4 15 ! 3 279 15 !
+-------------------+-------------------+-------------------+
! 3 79 1 ! 8 279 4 ! 6 5 279 !
! 267 4 279 ! 5 2679 3 ! 1 279 8 !
! 267 58 58 ! 679 1279 126 ! 2479 2379 34 !
+-------------------+-------------------+-------------------+
At least one candidate of a previous Trid-OR3-relation between candidates n1r9c1 n6r9c1 n4r9c7 has just been eliminated.
There remains a Trid-OR2-relation between candidates: n6r9c1 n4r9c7
finned-x-wing-in-rows: n2{r7 r5}{c9 c5} ==> r4c5≠2
whip[1]: b5n2{r5c6 .} ==> r5c9≠2
naked-pairs-in-a-row: r5{c3 c9}{n7 n9} ==> r5c4≠9, r5c4≠7
finned-x-wing-in-rows: n2{r6 r1}{c2 c8} ==> r2c8≠2
biv-chain[2]: r5n9{c9 c3} - b7n9{r8c3 r7c2} ==> r7c9≠9
hidden-triplets-in-a-row: r2{n1 n3 n8}{c5 c4 c8} ==> r2c8≠7
z-chain[3]: r7n9{c5 c2} - r6n9{c2 c8} - b9n9{r8c8 .} ==> r9c4≠9
whip[1]: b8n9{r9c5 .} ==> r4c5≠9
Trid-OR2-whip[2]: OR2{{n4r9c7 | n6r9c1}} - r9c4{n6 .} ==> r9c7≠7t-whip[3]: b4n2{r6c2 r4c1} - b7n2{r9c1 r8c3} - b7n9{r8c3 .} ==> r6c2≠9
biv-chain[3]: r4n2{c7 c1} - r6c2{n2 n7} - r5n7{c3 c9} ==> r4c7≠7
whip[1]: c7n7{r2 .} ==> r1c8≠7, r1c9≠7
biv-chain[3]: r5n9{c3 c9} - c9n7{r5 r7} - r7c2{n7 n9} ==> r8c3≠9
hidden-single-in-a-block ==> r7c2=9
biv-chain[3]: r8c3{n2 n7} - r5n7{c3 c9} - r7c9{n7 n2} ==> r8c8≠2
biv-chain[3]: r7n7{c5 c9} - r8c8{n7 n9} - b8n9{r8c5 r9c5} ==> r9c5≠7
biv-chain[3]: r8c8{n9 n7} - r7c9{n7 n2} - r1c9{n2 n9} ==> r1c8≠9
biv-chain[3]: r4c7{n2 n9} - r1n9{c7 c9} - c9n2{r1 r7} ==> r9c7≠2
biv-chain[3]: r1n7{c7 c2} - r6c2{n7 n2} - b6n2{r6c8 r4c7} ==> r1c7≠2
biv-chain[2]: r6n2{c2 c8} - c7n2{r4 r2} ==> r2c2≠2
Trid-OR2-whip[3]: OR2{{n4r9c7 | n6r9c1}} - b8n6{r9c4 r8c5} - r8n9{c5 .} ==> r9c7≠9stte