Analysis of xx-mith-te3-00005970-base.sdk

Contents

Original Sudoku

level: hard

Original Sudoku

position: .....67.94.71.9..6.967......64....1......754......2..8..1......6..9.1.2.9.2.74... initial

Autosolve

position: .....67.94.71.92.6.967......64....1......754......26.8..1......6..9.1.2.9.2.74.6. autosolve
Autosolve

Pair Reduction Variants

Pair Reduction Analysis

Pair Reduction Analysis

The following important HDP chains were detected:

* DIS # E5: 3,6 => CTR => E5: 1,9
* CNT   1 HDP CHAINS /  12 HYP OPENED

See Appendix: Full HDP Chains for full list of HDP chains.

Pair Reduction

Pair Reduction

The following important HDP chains were detected:

* DIS # E5: 3,6 => CTR => E5: 1,9
* STA E5: 1,9
* CNT   1 HDP CHAINS /  23 HYP OPENED

See Appendix: Full HDP Chains for full list of HDP chains.

Pair Reduction Position

position: .....67.94.71.92.6.967......64....1....6.754......26.8..126....6..9.1.2.9.2.74.6. pair_reduction
Pair Reduction

See section Pair Reduction for the HDP chains leading to this result.

Deep Pair Reduction

Deep Pair Reduction

Time used: 0:00:06.688905

The following important HDP chains were detected:

* PRF # E6: 3,4 # A3: 3,8 => SOL
* STA # E6: 3,4 + A3: 3,8
* CNT   1 HDP CHAINS /  24 HYP OPENED

See Appendix: Full HDP Chains for full list of HDP chains.

Details

Positions

.....67.94.71.9..6.967......64....1......754......2..8..1......6..9.1.2.9.2.74... initial
.....67.94.71.92.6.967......64....1......754......26.8..1......6..9.1.2.9.2.74.6. autosolve
.....67.94.71.92.6.967......64....1....6.754......26.8..126....6..9.1.2.9.2.74.6. pair_reduction
123456789457189236896723154264895317389617542715342698541268973678931425932574861 solved

Classification

level: hard

Pairing Analysis

--------------------------------------------------
* PAIRS (12)
G3: 1,4
I3: 1,4
A4: 2,7
D5: 3,6
D6: 3,4
G4: 3,9
I4: 2,7
I5: 2,3
H6: 7,9
D7: 2,6
E7: 2,6
H7: 7,9

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
A1,B1: 1.. / A1 = 1  => 12 pairs (_) / B1 = 1  => 10 pairs (_)
G3,I3: 1.. / G3 = 1  => 11 pairs (_) / I3 = 1  => 14 pairs (_)
E5,E6: 1.. / E5 = 1  => 10 pairs (_) / E6 = 1  => 14 pairs (_)
G9,I9: 1.. / G9 = 1  => 14 pairs (_) / I9 = 1  => 11 pairs (_)
G3,G9: 1.. / G3 = 1  => 11 pairs (_) / G9 = 1  => 14 pairs (_)
I3,I9: 1.. / I3 = 1  => 14 pairs (_) / I9 = 1  => 11 pairs (_)
I4,I5: 2.. / I4 = 2  => 10 pairs (_) / I5 = 2  => 11 pairs (_)
D7,E7: 2.. / D7 = 2  =>  9 pairs (_) / E7 = 2  =>  0 pairs (X)
A3,E3: 2.. / A3 = 2  =>  0 pairs (X) / E3 = 2  => 11 pairs (_)
A4,I4: 2.. / A4 = 2  => 11 pairs (_) / I4 = 2  => 10 pairs (_)
B1,B5: 2.. / B1 = 2  =>  9 pairs (_) / B5 = 2  => 10 pairs (_)
D1,D7: 2.. / D1 = 2  =>  0 pairs (X) / D7 = 2  =>  9 pairs (_)
G4,I5: 3.. / G4 = 3  => 11 pairs (_) / I5 = 3  => 10 pairs (_)
D1,E1: 4.. / D1 = 4  => 12 pairs (_) / E1 = 4  => 11 pairs (_)
G3,I3: 4.. / G3 = 4  => 14 pairs (_) / I3 = 4  => 11 pairs (_)
D6,E6: 4.. / D6 = 4  => 11 pairs (_) / E6 = 4  => 12 pairs (_)
B7,B8: 4.. / B7 = 4  => 12 pairs (_) / B8 = 4  => 10 pairs (_)
D1,D6: 4.. / D1 = 4  => 12 pairs (_) / D6 = 4  => 11 pairs (_)
E1,E6: 4.. / E1 = 4  => 11 pairs (_) / E6 = 4  => 12 pairs (_)
D5,E5: 6.. / D5 = 6  =>  9 pairs (_) / E5 = 6  =>  0 pairs (X)
D7,E7: 6.. / D7 = 6  =>  0 pairs (X) / E7 = 6  =>  9 pairs (_)
D5,D7: 6.. / D5 = 6  =>  9 pairs (_) / D7 = 6  =>  0 pairs (X)
E5,E7: 6.. / E5 = 6  =>  0 pairs (X) / E7 = 6  =>  9 pairs (_)
I4,H6: 7.. / I4 = 7  => 11 pairs (_) / H6 = 7  => 10 pairs (_)
A4,I4: 7.. / A4 = 7  => 10 pairs (_) / I4 = 7  => 11 pairs (_)
B8,I8: 7.. / B8 = 7  => 12 pairs (_) / I8 = 7  => 10 pairs (_)
H6,H7: 7.. / H6 = 7  => 10 pairs (_) / H7 = 7  => 11 pairs (_)
C5,C6: 9.. / C5 = 9  => 13 pairs (_) / C6 = 9  => 13 pairs (_)
G4,H6: 9.. / G4 = 9  => 10 pairs (_) / H6 = 9  => 11 pairs (_)
G7,H7: 9.. / G7 = 9  => 11 pairs (_) / H7 = 9  => 10 pairs (_)
E4,G4: 9.. / E4 = 9  => 11 pairs (_) / G4 = 9  => 10 pairs (_)
C5,E5: 9.. / C5 = 9  => 13 pairs (_) / E5 = 9  => 13 pairs (_)
G4,G7: 9.. / G4 = 9  => 10 pairs (_) / G7 = 9  => 11 pairs (_)
H6,H7: 9.. / H6 = 9  => 11 pairs (_) / H7 = 9  => 10 pairs (_)
* DURATION: 0:00:12.809849  START: 03:29:48.635816  END: 03:30:01.445665 2025-04-06
* CP COUNT: (34)
* CLUE FOUND

* DEEP PAIR REDUCTION
* DURATION: 0:00:06.565369  START: 03:30:09.745138  END: 03:30:16.310507 2025-04-06
* SOLUTION FOUND
* SAVE PR GRAPH xx-mith-te3-00005970-base-pr-002.dot
* REASONING
* PRF # E6: 3,4 # A3: 3,8 => SOL
* STA # E6: 3,4 + A3: 3,8
* CNT   1 HDP CHAINS /  24 HYP OPENED

Header Info

rating: 1206; r2: 29442; index: 5970

Solution

position: 123456789457189236896723154264895317389617542715342698541268973678931425932574861 solved
Solution

See section Deep Pair Reduction for the HDP chains leading to this result.

Appendix: Full HDP Chains

A1. Pair Reduction Analysis

Full list of HDP chains traversed:

* DIS # E5: 3,6 => CTR => E5: 1,9
* INC # E5: 1,9 => UNS
* INC # E6: 3,4 => UNS
* INC # E6: 1,9 => UNS
* INC # D1: 3,4 => UNS
* INC # D1: 2,5,8 => UNS
* INC # E4: 3,9 => UNS
* INC # E4: 5,8 => UNS
* INC # G7: 3,9 => UNS
* INC # G7: 4,8 => UNS
* INC # A5: 2,3 => UNS
* INC # B5: 2,3 => UNS
* CNT  12 HDP CHAINS /  12 HYP OPENED

A2. Pair Reduction

Full list of HDP chains traversed:

* DIS # E5: 3,6 => CTR => E5: 1,9
* INC E5: 1,9 # E6: 3,4 => UNS
* INC E5: 1,9 # E6: 1,9 => UNS
* INC E5: 1,9 # D1: 3,4 => UNS
* INC E5: 1,9 # D1: 5,8 => UNS
* INC E5: 1,9 # E4: 3,9 => UNS
* INC E5: 1,9 # E4: 5,8 => UNS
* INC E5: 1,9 # G7: 3,9 => UNS
* INC E5: 1,9 # G7: 4,8 => UNS
* INC E5: 1,9 # A5: 2,3 => UNS
* INC E5: 1,9 # B5: 2,3 => UNS
* INC E5: 1,9 # E6: 1,9 => UNS
* INC E5: 1,9 # E6: 3,4 => UNS
* INC E5: 1,9 # E6: 3,4 => UNS
* INC E5: 1,9 # E6: 1,9 => UNS
* INC E5: 1,9 # D1: 3,4 => UNS
* INC E5: 1,9 # D1: 5,8 => UNS
* INC E5: 1,9 # E4: 3,9 => UNS
* INC E5: 1,9 # E4: 5,8 => UNS
* INC E5: 1,9 # G7: 3,9 => UNS
* INC E5: 1,9 # G7: 4,8 => UNS
* INC E5: 1,9 # A5: 2,3 => UNS
* INC E5: 1,9 # B5: 2,3 => UNS
* STA E5: 1,9
* CNT  23 HDP CHAINS /  23 HYP OPENED

A3. Deep Pair Reduction

Full list of HDP chains traversed:

* INC # E6: 1,9 => UNS
* INC # E6: 3,4 => UNS
* INC # E6: 3,4 => UNS
* INC # E6: 1,9 => UNS
* INC # D1: 3,4 => UNS
* INC # D1: 5,8 => UNS
* INC # E4: 3,9 => UNS
* INC # E4: 5,8 => UNS
* INC # G7: 3,9 => UNS
* INC # G7: 4,8 => UNS
* INC # A5: 2,3 => UNS
* INC # B5: 2,3 => UNS
* INC # E6: 1,9 # A5: 1,2 => UNS
* INC # E6: 1,9 # A5: 8 => UNS
* INC # E6: 1,9 # B5: 1,2 => UNS
* INC # E6: 1,9 # B5: 8 => UNS
* INC # E6: 1,9 # I7: 4,7 => UNS
* INC # E6: 1,9 # I7: 5 => UNS
* INC # E6: 1,9 # I8: 4,7 => UNS
* INC # E6: 1,9 # I8: 5 => UNS
* INC # E6: 1,9 => UNS
* INC # E6: 3,4 # B2: 3,8 => UNS
* PRF # E6: 3,4 # A3: 3,8 => SOL
* STA # E6: 3,4 + A3: 3,8
* CNT  23 HDP CHAINS /  24 HYP OPENED