... by: osi guy

These jigsaws are trully wicked but here is a resolve path:


Round 1
lastRemaining R3C6 = 9✓
Notes before: 2 3 4 7 8 9 → placed 9
9 can only go here in Region 3 — peers block all other spots
Round 2
pointingPair 3 eliminations
R2C1: 4 R2C6: 4 R2C7: 4
4 in Region 2 points along R2 — eliminates 3 | Removed: R2C1(4), R2C6(4), R2C7(4)
pointingPair 3 eliminations
R8C1: 9 R8C8: 9 R8C9: 9
9 in Region 7 points along R8 — eliminates 3 | Removed: R8C1(9), R8C8(9), R8C9(9)
pointingPair 2 eliminations
R9C7: 7 R9C8: 7
7 in Region 9 points along R9 — eliminates 2 | Removed: R9C7(7), R9C8(7)
claiming 4 eliminations
R2C3: 5 R2C4: 5 R2C5: 5 R4C4: 5
5 in R1 confined to Region 2 — eliminates 4 | Removed: R2C3(5), R2C4(5), R2C5(5), R4C4(5)
claiming 3 eliminations
R1C2: 1 R3C3: 1 R4C2: 1
1 in C1 confined to Region 1 — eliminates 3 | Removed: R1C2(1), R3C3(1), R4C2(1)
Round 3
claiming 3 eliminations
R4C3: 1 R6C3: 1 R7C3: 1
1 in C2 confined to Region 5 — eliminates 3 | Removed: R4C3(1), R6C3(1), R7C3(1)
Round 4
aic 1 elimination
R4C4: 1
AIC: common peer elimination on 1 | Removed: R4C4(1)
Round 5
aic 1 elimination
R7C3: 9
AIC: common peer elimination on 9 | Removed: R7C3(9)
Round 6
alsXZ 1 elimination
R8C4: 7
ALS-XZ: RCC=9, eliminates 7 | Removed: R8C4(7)
Round 7
forcingNet 1 elimination
R9C7: 4
Forcing Net from R9C7: eliminate contradicted | Removed: R9C7(4)
Round 8
template 3 eliminations
R2C6: 2 R2C7: 2 R7C1: 2
Template: digit 2 — 3 elims (16 templates) | Removed: R2C6(2), R2C7(2), R7C1(2)
Round 9
template 4 eliminations
R3C3: 4 R4C3: 4 R4C6: 4 R6C3: 4
Template: digit 4 — 4 elims (10 templates) | Removed: R3C3(4), R4C3(4), R4C6(4), R6C3(4)
Round 10
template 2 eliminations
R8C3: 5 R8C4: 5
Template: digit 5 — 2 elims (11 templates) | Removed: R8C3(5), R8C4(5)
Round 11
forcingNet 1 elimination
R8C4: 6
Forcing Net from R8C4: eliminate contradicted | Removed: R8C4(6)
Round 12
forcingNet 1 elimination
R9C4: 5
Forcing Net from R9C4: eliminate contradicted | Removed: R9C4(5)
Round 13
template 2 eliminations
R5C8: 6 R5C9: 6
Template: digit 6 — 2 elims (29 templates) | Removed: R5C8(6), R5C9(6)
Round 14
template 3 eliminations
R1C6: 7 R3C4: 7 R4C7: 7
Template: digit 7 — 3 elims (22 templates) | Removed: R1C6(7), R3C4(7), R4C7(7)
Round 15
template 2 eliminations
R1C3: 8 R2C3: 8
Template: digit 8 — 2 elims (60 templates) | Removed: R1C3(8), R2C3(8)
Round 16
bowmanBingo 1 elimination
R3C5: 7
Bowman's Bingo from R3C5: eliminate contradicted values | Removed: R3C5(7)
Round 17
bowmanBingo 1 elimination
R4C5: 7
Bowman's Bingo from R4C5: eliminate contradicted values | Removed: R4C5(7)
Round 18
forcingNet 1 elimination
R2C3: 7
Forcing Net from R2C3: eliminate contradicted | Removed: R2C3(7)
Round 19
forcingChain 1 elimination
R1C2: 7
Forcing Chain from R1C2: eliminate contradicted | Removed: R1C2(7)
Round 20
forcingChain 1 elimination
R2C3: 3
Forcing Chain from R2C3: eliminate contradicted | Removed: R2C3(3)
Round 21
forcingNet 1 elimination
R1C6: 2
Forcing Net from R1C6: eliminate contradicted | Removed: R1C6(2)
Round 22
forcingChain 1 elimination
R9C7: 2
Forcing Chain from R9C7: eliminate contradicted | Removed: R9C7(2)
Round 23
alsXZ 1 elimination
R2C5: 7
ALS-XZ: RCC=1, eliminates 7 | Removed: R2C5(7)
Round 24
claiming 1 elimination
R8C3: 7
7 in C5 confined to Region 7 — eliminates 1 | Removed: R8C3(7)
Round 25
forcingChain 1 elimination
R8C3: 3
Forcing Chain from R8C3: eliminate contradicted | Removed: R8C3(3)
Round 26
forcingChain 2 eliminations
R1C3: 2,5
Forcing Chain from R9C4: eliminate from R1C3 | Removed: R1C3(2), R1C3(5)
Round 27
pointingPair 1 elimination
R2C1: 2
2 in Region 2 points along R2 — eliminates 1 | Removed: R2C1(2)
claiming 1 elimination
R5C1: 5
5 in C3 confined to Region 5 — eliminates 1 | Removed: R5C1(5)
Round 28
claiming 1 elimination
R9C6: 5
5 in C1 confined to Region 9 — eliminates 1 | Removed: R9C6(5)
Round 29
hiddenPair 3 eliminations
R2C5: 3,6,8
Hidden Pair {2,4} in R2 | Removed: R2C5(3), R2C5(6), R2C5(8)
Round 30
pointingPair 1 elimination
R6C4: 6
6 in Region 2 points along C4 — eliminates 1 | Removed: R6C4(6)
Round 31
forcingChain 1 elimination
R2C1: 3
Forcing Chain from R2C1: eliminate contradicted | Removed: R2C1(3)
Round 32
forcingChain 1 elimination
R7C2: 2
Forcing Chain from R7C2: eliminate contradicted | Removed: R7C2(2)
Round 33
forcingChain 1 elimination
R8C4: 3
Forcing Chain from R8C4: eliminate contradicted | Removed: R8C4(3)
Round 34
nakedPair 1 elimination
R6C4: 1
Naked Pair {1,9} in Region 7 at R8C3,R8C4 — eliminates 1 candidates | Removed: R6C4(1)
nakedPair 2 eliminations
R8C7: 1 R8C9: 1
Naked Pair {1,9} in R8 at R8C3,R8C4 — eliminates 2 candidates | Removed: R8C7(1), R8C9(1)
pointingPair 1 elimination
R3C9: 1
1 in Region 8 points along C9 — eliminates 1 | Removed: R3C9(1)
Round 35
lastRemaining R4C7 = 1✓
Notes before: 1 3 5 8 → placed 1
1 can only go here in Region 4 — peers block all other spots
Round 36
pointingPair 2 eliminations
R6C9: 5 R8C9: 5
5 in Region 4 points along C9 — eliminates 2 | Removed: R6C9(5), R8C9(5)
pointingPair 2 eliminations
R1C8: 8 R6C8: 8
8 in Region 4 points along C8 — eliminates 2 | Removed: R1C8(8), R6C8(8)
Round 37
finnedXWing 2 eliminations
R5C5: 5 R8C5: 5
Finned X-Wing on 5: rows 4,6 | Removed: R5C5(5), R8C5(5)
Round 38
pointingPair 1 elimination
R6C3: 5
5 in Region 7 points along R6 — eliminates 1 | Removed: R6C3(5)
Round 39
forcingChain R2C3 = 4✓
Notes before: 2 4 → placed 4
Forcing Chain from R2C3: must be 4
nakedSingle R2C5 = 2✓
Notes before: 2 → placed 2
Elimination left only {2} → place 2
Round 40
claiming 1 elimination
R3C7: 4
4 in C5 confined to Region 3 — eliminates 1 | Removed: R3C7(4)
Round 41
forcingChain R8C3 = 1✓
Notes before: 1 9 → placed 1
Forcing Chain from R8C3: must be 1
nakedSingle R8C4 = 9✓
Notes before: 9 → placed 9
Elimination left only {9} → place 9
Round 42
pointingPair 1 elimination
R5C1: 9
9 in Region 9 points along C1 — eliminates 1 | Removed: R5C1(9)
Round 43
nakedTriple 5 eliminations
R1C1: 2,3 R1C4: 3,7 R1C6: 3
Naked Triple {2,3,7} in R1 | Removed: R1C1(2), R1C1(3), R1C4(3), R1C4(7), R1C6(3)
Round 44
nakedQuad 4 eliminations
R4C3: 3,8 R5C3: 3,8
Naked Quad {3,7,2,8} in R1C3,R3C3,R6C3,R7C3 | Removed: R4C3(3), R4C3(8), R5C3(3), R5C3(8)
Round 45
simpleColoring 1 elimination
R4C8: 7
Simple Coloring on 7: R4C8 sees both colors | Removed: R4C8(7)
Round 46
forcingChain R1C3 = 7✓
Notes before: 3 7 → placed 7
Forcing Chain from R1C3: must be 7
Round 47
lastRemaining R4C2 = 7✓
Notes before: 3 4 6 7 → placed 7
7 can only go here in Region 1 — peers block all other spots
hiddenSingle R9C4 = 7✓
Notes before: 3 7 → placed 7
7 has only one spot in C4 (cell had candidates {3,7})
Round 48
pointingPair 3 eliminations
R5C1: 4 R8C1: 4 R9C1: 4
4 in Region 1 points along C1 — eliminates 3 | Removed: R5C1(4), R8C1(4), R9C1(4)
pointingPair 1 elimination
R5C1: 6
6 in Region 1 points along C1 — eliminates 1 | Removed: R5C1(6)
pointingPair 1 elimination
R6C4: 3
3 in Region 2 points along C4 — eliminates 1 | Removed: R6C4(3)
pointingPair 3 eliminations
R2C7: 7 R3C7: 7 R8C7: 7
7 in Region 6 points along C7 — eliminates 3 | Removed: R2C7(7), R3C7(7), R8C7(7)
claiming 3 eliminations
R2C9: 7 R5C8: 7 R5C9: 7
7 in R3 confined to Region 4 — eliminates 3 | Removed: R2C9(7), R5C8(7), R5C9(7)
claiming 1 elimination
R9C8: 4
4 in R8 confined to Region 8 — eliminates 1 | Removed: R9C8(4)
Round 49
lastRemaining R2C6 = 7✓
Notes before: 3 5 7 8 → placed 7
7 can only go here in Region 3 — peers block all other spots
Round 50
pointingPair 1 elimination
R9C2: 4
4 in Region 5 points along C2 — eliminates 1 | Removed: R9C2(4)
Round 51
lastRemaining R9C6 = 4✓
Notes before: 2 3 4 → placed 4
4 can only go here in Region 9 — peers block all other spots
Round 52
nakedPair 4 eliminations
R5C2: 3 R6C2: 2,3 R7C2: 3
Naked Pair {2,3} in C2 at R1C2,R9C2 — eliminates 4 candidates | Removed: R5C2(3), R6C2(2), R6C2(3), R7C2(3)
pointingPair 1 elimination
R3C3: 2
2 in Region 5 points along C3 — eliminates 1 | Removed: R3C3(2)
nakedSingle R7C2 = 1✓
Notes before: 1 → placed 1
Elimination left only {1} → place 1
Round 53
lastRemaining R6C9 = 1✓
Notes before: 1 3 6 → placed 1
1 can only go here in Region 8 — peers block all other spots
Round 54
pointingPair 1 elimination
R8C5: 6
6 in Region 8 points along R8 — eliminates 1 | Removed: R8C5(6)
Round 55
nakedQuad 4 eliminations
R5C5: 3,8 R5C7: 3,8
Naked Quad {3,8,5,9} in R5C1,R5C3,R5C8,R5C9 | Removed: R5C5(3), R5C5(8), R5C7(3), R5C7(8)
Round 56
pointingPair 2 eliminations
R3C5: 3 R4C5: 3
3 in Region 7 points along C5 — eliminates 2 | Removed: R3C5(3), R4C5(3)
Round 57
xyzWing 1 elimination
R3C8: 3
XYZ-Wing: pivot R3C7 eliminates 3 | Removed: R3C8(3)
Round 58
forcingChain R1C1 = 1✓
Notes before: 1 8 → placed 1
Forcing Chain from R1C1: must be 1
Round 59
lastRemaining R3C4 = 1✓
Notes before: 1 3 6 8 → placed 1
1 can only go here in Region 2 — peers block all other spots
Round 60
nakedPair 2 eliminations
R2C4: 8 R4C4: 8
Naked Pair {5,8} in Region 2 at R1C4,R1C6 — eliminates 2 candidates | Removed: R2C4(8), R4C4(8)