Analysis of xx-ph-00000678-H142-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7.....6.....7....7.5.....4..3..9...69..8.......2..1..85..9......4...3.....1.2. initial

Autosolve

position: 98.7.....6.....7....7.5.....4..3..9...69..8.......2..1..85..9......4...3.....1.2. autosolve
Autosolve

Pair Reduction Variants

Pair Reduction Analysis

Pair Reduction Analysis

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

Pair Reduction

Pair Reduction

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

Deep Pair Reduction

Deep Pair Reduction

Time used: 0:00:07.538964

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

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000019

List of important HDP chains detected for F5,D6: 4..:

* DIS # F5: 4 # D3: 3,6 => CTR => D3: 1,2,4,8
* DIS # F5: 4 + D3: 1,2,4,8 # F7: 3,6 => CTR => F7: 7
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 # A4: 1,2 => CTR => A4: 7,8
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 # D4: 6,8 => CTR => D4: 1
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 # F3: 9 => CTR => F3: 6,8
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 + F3: 6,8 # B9: 6 => CTR => B9: 7,9
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 + F3: 6,8 + B9: 7,9 # H6: 3,5 => CTR => H6: 4
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 + F3: 6,8 + B9: 7,9 + H6: 4 => CTR => F5: 5,7
* STA F5: 5,7
* CNT   8 HDP CHAINS /  31 HYP OPENED

List of important HDP chains detected for D4,E5: 1..:

* DIS # E5: 1 # D6: 6,8 => CTR => D6: 4
* DIS # E5: 1 + D6: 4 # D3: 6,8 => CTR => D3: 1,2,3
* CNT   2 HDP CHAINS /  52 HYP OPENED

List of important HDP chains detected for F4,F5: 5..:

* DIS # F4: 5 # A4: 1,2 => CTR => A4: 7,8
* CNT   1 HDP CHAINS /  33 HYP OPENED

List of important HDP chains detected for F7,D9: 3..:

* PRF # F7: 3 # E9: 6,8 => SOL
* STA # F7: 3 + E9: 6,8
* CNT   1 HDP CHAINS /  11 HYP OPENED

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

Details

This sudoku is deep. Here is some information that may be helpful on how to proceed.

Positions

98.7.....6.....7....7.5.....4..3..9...69..8.......2..1..85..9......4...3.....1.2. initial
98.7.....6.....7....7.5.....4..3..9...69..8.......2..1..85..9......4...3.....1.2. autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* PAIRS (1)
E5: 1,7

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
D4,E5: 1.. / D4 = 1  =>  4 pairs (_) / E5 = 1  =>  2 pairs (_)
E7,D8: 2.. / E7 = 2  =>  3 pairs (_) / D8 = 2  =>  2 pairs (_)
F7,D9: 3.. / F7 = 3  =>  3 pairs (_) / D9 = 3  =>  2 pairs (_)
F5,D6: 4.. / F5 = 4  =>  6 pairs (_) / D6 = 4  =>  2 pairs (_)
F4,F5: 5.. / F4 = 5  =>  4 pairs (_) / F5 = 5  =>  1 pairs (_)
A4,A6: 8.. / A4 = 8  =>  2 pairs (_) / A6 = 8  =>  5 pairs (_)
H8,I9: 8.. / H8 = 8  =>  4 pairs (_) / I9 = 8  =>  2 pairs (_)
I2,I3: 9.. / I2 = 9  =>  1 pairs (_) / I3 = 9  =>  1 pairs (_)
B6,C6: 9.. / B6 = 9  =>  2 pairs (_) / C6 = 9  =>  1 pairs (_)
F8,E9: 9.. / F8 = 9  =>  1 pairs (_) / E9 = 9  =>  1 pairs (_)
F3,I3: 9.. / F3 = 9  =>  1 pairs (_) / I3 = 9  =>  1 pairs (_)
E2,E9: 9.. / E2 = 9  =>  1 pairs (_) / E9 = 9  =>  1 pairs (_)
* DURATION: 0:00:08.579894  START: 04:24:12.647472  END: 04:24:21.227366 2020-11-21
* CP COUNT: (12)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
F5,D6: 4.. / F5 = 4 ==>  0 pairs (X) / D6 = 4  =>  2 pairs (_)
A4,A6: 8.. / A4 = 8 ==>  2 pairs (_) / A6 = 8 ==>  5 pairs (_)
H8,I9: 8.. / H8 = 8 ==>  4 pairs (_) / I9 = 8 ==>  2 pairs (_)
D4,E5: 1.. / D4 = 1 ==>  4 pairs (_) / E5 = 1 ==>  3 pairs (_)
F4,F5: 5.. / F4 = 5 ==>  5 pairs (_) / F5 = 5 ==>  1 pairs (_)
F7,D9: 3.. / F7 = 3 ==>  0 pairs (*) / D9 = 3  =>  0 pairs (X)
* DURATION: 0:01:41.488046  START: 04:24:30.883275  END: 04:26:12.371321 2020-11-21
* REASONING F5,D6: 4..
* DIS # F5: 4 # D3: 3,6 => CTR => D3: 1,2,4,8
* DIS # F5: 4 + D3: 1,2,4,8 # F7: 3,6 => CTR => F7: 7
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 # A4: 1,2 => CTR => A4: 7,8
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 # D4: 6,8 => CTR => D4: 1
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 # F3: 9 => CTR => F3: 6,8
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 + F3: 6,8 # B9: 6 => CTR => B9: 7,9
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 + F3: 6,8 + B9: 7,9 # H6: 3,5 => CTR => H6: 4
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 + F3: 6,8 + B9: 7,9 + H6: 4 => CTR => F5: 5,7
* STA F5: 5,7
* CNT   8 HDP CHAINS /  31 HYP OPENED
* REASONING D4,E5: 1..
* DIS # E5: 1 # D6: 6,8 => CTR => D6: 4
* DIS # E5: 1 + D6: 4 # D3: 6,8 => CTR => D3: 1,2,3
* CNT   2 HDP CHAINS /  52 HYP OPENED
* REASONING F4,F5: 5..
* DIS # F4: 5 # A4: 1,2 => CTR => A4: 7,8
* CNT   1 HDP CHAINS /  33 HYP OPENED
* REASONING F7,D9: 3..
* PRF # F7: 3 # E9: 6,8 => SOL
* STA # F7: 3 + E9: 6,8
* CNT   1 HDP CHAINS /  11 HYP OPENED
* DCP COUNT: (6)
* SOLUTION FOUND

Header Info

678;H142;GP;22;11.30;11.30;10.50

Appendix: Full HDP Chains

A1. Pair Reduction Analysis

Full list of HDP chains traversed:

* INC # A5: 1,7 => UNS
* INC # B5: 1,7 => UNS
* CNT   2 HDP CHAINS /   2 HYP OPENED

A2. Pair Reduction

Full list of HDP chains traversed:

* INC # A5: 1,7 => UNS
* INC # B5: 1,7 => UNS
* CNT   2 HDP CHAINS /   2 HYP OPENED

A3. Deep Pair Reduction

Full list of HDP chains traversed:

* INC # A5: 1,7 => UNS
* INC # B5: 1,7 => UNS
* INC # A5: 1,7 # A4: 1,7 => UNS
* INC # A5: 1,7 # A4: 2,5,8 => UNS
* INC # A5: 1,7 # A7: 1,7 => UNS
* INC # A5: 1,7 # A8: 1,7 => UNS
* INC # A5: 1,7 # H5: 4,5 => UNS
* INC # A5: 1,7 # I5: 4,5 => UNS
* INC # A5: 1,7 => UNS
* INC # B5: 1,7 # A4: 1,7 => UNS
* INC # B5: 1,7 # A4: 2,5,8 => UNS
* INC # B5: 1,7 # B7: 1,7 => UNS
* INC # B5: 1,7 # B8: 1,7 => UNS
* INC # B5: 1,7 # H5: 4,5 => UNS
* INC # B5: 1,7 # I5: 4,5 => UNS
* INC # B5: 1,7 => UNS
* CNT  16 HDP CHAINS /  16 HYP OPENED

A4. Deep Constraint Pair Analysis

Full list of HDP chains traversed for F5,D6: 4..:

* DIS # F5: 4 # D3: 3,6 => CTR => D3: 1,2,4,8
* INC # F5: 4 + D3: 1,2,4,8 # F3: 3,6 => UNS
* INC # F5: 4 + D3: 1,2,4,8 # F3: 3,6 => UNS
* INC # F5: 4 + D3: 1,2,4,8 # F3: 8,9 => UNS
* INC # F5: 4 + D3: 1,2,4,8 # G1: 3,6 => UNS
* INC # F5: 4 + D3: 1,2,4,8 # H1: 3,6 => UNS
* DIS # F5: 4 + D3: 1,2,4,8 # F7: 3,6 => CTR => F7: 7
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 # F3: 3,6 => UNS
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 # F3: 8,9 => UNS
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 # G1: 3,6 => UNS
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 # H1: 3,6 => UNS
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 # A4: 1,2 => CTR => A4: 7,8
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 # A5: 1,2 => UNS
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 # B5: 1,2 => UNS
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 # C1: 1,2 => UNS
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 # C2: 1,2 => UNS
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 # C8: 1,2 => UNS
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 # A5: 1,7 => UNS
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 # B5: 1,7 => UNS
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 # D4: 6,8 => CTR => D4: 1
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 # H1: 1,6 => UNS
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 # H1: 3,4 => UNS
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 # H1: 3,6 => UNS
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 # H1: 1,4 => UNS
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 # F3: 6,8 => UNS
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 # F3: 9 => CTR => F3: 6,8
* INC # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 + F3: 6,8 # B9: 7,9 => UNS
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 + F3: 6,8 # B9: 6 => CTR => B9: 7,9
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 + F3: 6,8 + B9: 7,9 # H6: 3,5 => CTR => H6: 4
* DIS # F5: 4 + D3: 1,2,4,8 + F7: 7 + A4: 7,8 + D4: 1 + F3: 6,8 + B9: 7,9 + H6: 4 => CTR => F5: 5,7
* INC F5: 5,7 # D6: 4 => UNS
* STA F5: 5,7
* CNT  31 HDP CHAINS /  31 HYP OPENED

Full list of HDP chains traversed for A4,A6: 8..:

* INC # A6: 8 # F2: 8,9 => UNS
* INC # A6: 8 # F3: 8,9 => UNS
* INC # A6: 8 # I2: 8,9 => UNS
* INC # A6: 8 # I2: 2,4,5 => UNS
* INC # A6: 8 # A5: 1,7 => UNS
* INC # A6: 8 # B5: 1,7 => UNS
* INC # A6: 8 # G6: 4,6 => UNS
* INC # A6: 8 # H6: 4,6 => UNS
* INC # A6: 8 # D3: 4,6 => UNS
* INC # A6: 8 # D3: 1,2,3,8 => UNS
* INC # A6: 8 # F4: 6,7 => UNS
* INC # A6: 8 # F4: 5,8 => UNS
* INC # A6: 8 # H6: 6,7 => UNS
* INC # A6: 8 # H6: 3,4,5 => UNS
* INC # A6: 8 # E7: 6,7 => UNS
* INC # A6: 8 # E7: 2 => UNS
* INC # A6: 8 # F8: 8,9 => UNS
* INC # A6: 8 # F8: 6,7 => UNS
* INC # A6: 8 => UNS
* INC # A4: 8 # D3: 1,6 => UNS
* INC # A4: 8 # D3: 2,3,4,8 => UNS
* INC # A4: 8 # A5: 1,7 => UNS
* INC # A4: 8 # B5: 1,7 => UNS
* INC # A4: 8 => UNS
* CNT  24 HDP CHAINS /  24 HYP OPENED

Full list of HDP chains traversed for H8,I9: 8..:

* INC # H8: 8 # E2: 8,9 => UNS
* INC # H8: 8 # F2: 8,9 => UNS
* INC # H8: 8 # F3: 8,9 => UNS
* INC # H8: 8 # F3: 3,4,6 => UNS
* INC # H8: 8 # A5: 1,7 => UNS
* INC # H8: 8 # B5: 1,7 => UNS
* INC # H8: 8 # E7: 2,6 => UNS
* INC # H8: 8 # E7: 7 => UNS
* INC # H8: 8 # B8: 2,6 => UNS
* INC # H8: 8 # B8: 1,5,7,9 => UNS
* INC # H8: 8 # D3: 2,6 => UNS
* INC # H8: 8 # D3: 1,3,4,8 => UNS
* INC # H8: 8 => UNS
* INC # I9: 8 # A5: 1,7 => UNS
* INC # I9: 8 # B5: 1,7 => UNS
* INC # I9: 8 # F7: 3,6 => UNS
* INC # I9: 8 # F7: 7 => UNS
* INC # I9: 8 # B9: 3,6 => UNS
* INC # I9: 8 # B9: 5,7,9 => UNS
* INC # I9: 8 # D3: 3,6 => UNS
* INC # I9: 8 # D3: 1,2,4,8 => UNS
* INC # I9: 8 => UNS
* CNT  22 HDP CHAINS /  22 HYP OPENED

Full list of HDP chains traversed for D4,E5: 1..:

* INC # D4: 1 # A4: 2,5 => UNS
* INC # D4: 1 # A5: 2,5 => UNS
* INC # D4: 1 # B5: 2,5 => UNS
* INC # D4: 1 # G4: 2,5 => UNS
* INC # D4: 1 # I4: 2,5 => UNS
* INC # D4: 1 # C1: 2,5 => UNS
* INC # D4: 1 # C2: 2,5 => UNS
* INC # D4: 1 # C8: 2,5 => UNS
* INC # D4: 1 # H5: 4,5 => UNS
* INC # D4: 1 # I5: 4,5 => UNS
* INC # D4: 1 # F4: 6,8 => UNS
* INC # D4: 1 # D6: 6,8 => UNS
* INC # D4: 1 # E9: 6,8 => UNS
* INC # D4: 1 # E9: 9 => UNS
* INC # D4: 1 # D8: 2,6 => UNS
* INC # D4: 1 # D8: 8 => UNS
* INC # D4: 1 # B7: 2,6 => UNS
* INC # D4: 1 # B7: 1,3,7 => UNS
* INC # D4: 1 # E1: 2,6 => UNS
* INC # D4: 1 # E1: 1 => UNS
* INC # D4: 1 => UNS
* INC # E5: 1 # D3: 2,6 => UNS
* INC # E5: 1 # D3: 1,3,4,8 => UNS
* INC # E5: 1 # G1: 2,6 => UNS
* INC # E5: 1 # I1: 2,6 => UNS
* INC # E5: 1 # E7: 2,6 => UNS
* INC # E5: 1 # E7: 7 => UNS
* INC # E5: 1 # F4: 6,8 => UNS
* DIS # E5: 1 # D6: 6,8 => CTR => D6: 4
* INC # E5: 1 + D6: 4 # E6: 6,8 => UNS
* DIS # E5: 1 + D6: 4 # D3: 6,8 => CTR => D3: 1,2,3
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # D8: 6,8 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # D9: 6,8 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # F4: 6,8 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # E6: 6,8 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # D8: 6,8 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # D9: 6,8 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # G1: 2,6 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # I1: 2,6 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # E7: 2,6 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # E7: 7 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # F4: 6,8 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # E6: 6,8 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # D8: 6,8 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # D9: 6,8 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # F4: 5,7 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # F4: 6,8 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # A5: 5,7 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # B5: 5,7 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # H5: 5,7 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 # I5: 5,7 => UNS
* INC # E5: 1 + D6: 4 + D3: 1,2,3 => UNS
* CNT  52 HDP CHAINS /  52 HYP OPENED

Full list of HDP chains traversed for F4,F5: 5..:

* DIS # F4: 5 # A4: 1,2 => CTR => A4: 7,8
* INC # F4: 5 + A4: 7,8 # A5: 1,2 => UNS
* INC # F4: 5 + A4: 7,8 # B5: 1,2 => UNS
* INC # F4: 5 + A4: 7,8 # C1: 1,2 => UNS
* INC # F4: 5 + A4: 7,8 # C2: 1,2 => UNS
* INC # F4: 5 + A4: 7,8 # C8: 1,2 => UNS
* INC # F4: 5 + A4: 7,8 # A5: 1,7 => UNS
* INC # F4: 5 + A4: 7,8 # B5: 1,7 => UNS
* INC # F4: 5 + A4: 7,8 # H5: 4,7 => UNS
* INC # F4: 5 + A4: 7,8 # I5: 4,7 => UNS
* INC # F4: 5 + A4: 7,8 # I4: 2,6 => UNS
* INC # F4: 5 + A4: 7,8 # I4: 7 => UNS
* INC # F4: 5 + A4: 7,8 # G1: 2,6 => UNS
* INC # F4: 5 + A4: 7,8 # G3: 2,6 => UNS
* INC # F4: 5 + A4: 7,8 # A6: 7,8 => UNS
* INC # F4: 5 + A4: 7,8 # A6: 3,5 => UNS
* INC # F4: 5 + A4: 7,8 # A5: 1,2 => UNS
* INC # F4: 5 + A4: 7,8 # B5: 1,2 => UNS
* INC # F4: 5 + A4: 7,8 # C1: 1,2 => UNS
* INC # F4: 5 + A4: 7,8 # C2: 1,2 => UNS
* INC # F4: 5 + A4: 7,8 # C8: 1,2 => UNS
* INC # F4: 5 + A4: 7,8 # A5: 1,7 => UNS
* INC # F4: 5 + A4: 7,8 # B5: 1,7 => UNS
* INC # F4: 5 + A4: 7,8 # H5: 4,7 => UNS
* INC # F4: 5 + A4: 7,8 # I5: 4,7 => UNS
* INC # F4: 5 + A4: 7,8 # I4: 2,6 => UNS
* INC # F4: 5 + A4: 7,8 # I4: 7 => UNS
* INC # F4: 5 + A4: 7,8 # G1: 2,6 => UNS
* INC # F4: 5 + A4: 7,8 # G3: 2,6 => UNS
* INC # F4: 5 + A4: 7,8 => UNS
* INC # F5: 5 # A5: 1,7 => UNS
* INC # F5: 5 # B5: 1,7 => UNS
* INC # F5: 5 => UNS
* CNT  33 HDP CHAINS /  33 HYP OPENED

Full list of HDP chains traversed for F7,D9: 3..:

* INC # F7: 3 # D3: 4,6 => UNS
* INC # F7: 3 # F3: 4,6 => UNS
* INC # F7: 3 # G1: 4,6 => UNS
* INC # F7: 3 # H1: 4,6 => UNS
* INC # F7: 3 # I1: 4,6 => UNS
* INC # F7: 3 # A5: 1,7 => UNS
* INC # F7: 3 # B5: 1,7 => UNS
* INC # F7: 3 # D8: 6,8 => UNS
* INC # F7: 3 # F8: 6,8 => UNS
* PRF # F7: 3 # E9: 6,8 => SOL
* STA # F7: 3 + E9: 6,8
* CNT  10 HDP CHAINS /  11 HYP OPENED