Analysis of xx-ph-00029672-2011_12-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6..75..6......6..8...4..3...2...5.7.9.......2..4.7......1..9.8.5.....1...3. initial

Autosolve

position: 98.7..6..75..6......6..8...4..3...2...5.7.9.......2..4.7......1..9.8.5.....1...3. autosolve
Autosolve

Pair Reduction Variants

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

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000008

List of important HDP chains detected for F8,F9: 7..:

* DIS # F8: 7 # H7: 4,6 => CTR => H7: 8,9
* DIS # F8: 7 + H7: 8,9 # I9: 2,6 => CTR => I9: 7,8,9
* CNT   2 HDP CHAINS /  27 HYP OPENED

List of important HDP chains detected for I5,G6: 3..:

* DIS # G6: 3 # A7: 2,3 => CTR => A7: 5,6,8
* CNT   1 HDP CHAINS /  31 HYP OPENED

List of important HDP chains detected for A5,B5: 2..:

* DIS # A5: 2 # B3: 1,3 => CTR => B3: 2,4
* PRF # A5: 2 + B3: 2,4 # A6: 1,3 => SOL
* STA # A5: 2 + B3: 2,4 + A6: 1,3
* CNT   2 HDP CHAINS /   7 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..75..6......6..8...4..3...2...5.7.9.......2..4.7......1..9.8.5.....1...3. initial
98.7..6..75..6......6..8...4..3...2...5.7.9.......2..4.7......1..9.8.5.....1...3. autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
A8,B8: 1.. / A8 = 1  =>  1 pairs (_) / B8 = 1  =>  1 pairs (_)
A5,B5: 2.. / A5 = 2  =>  1 pairs (_) / B5 = 2  =>  1 pairs (_)
I5,G6: 3.. / I5 = 3  =>  1 pairs (_) / G6 = 3  =>  3 pairs (_)
D5,F5: 4.. / D5 = 4  =>  3 pairs (_) / F5 = 4  =>  1 pairs (_)
I4,H6: 5.. / I4 = 5  =>  4 pairs (_) / H6 = 5  =>  2 pairs (_)
A7,A9: 5.. / A7 = 5  =>  0 pairs (_) / A9 = 5  =>  0 pairs (_)
C4,C6: 7.. / C4 = 7  =>  3 pairs (_) / C6 = 7  =>  1 pairs (_)
F8,F9: 7.. / F8 = 7  =>  4 pairs (_) / F9 = 7  =>  0 pairs (_)
D5,D6: 8.. / D5 = 8  =>  2 pairs (_) / D6 = 8  =>  1 pairs (_)
B4,B6: 9.. / B4 = 9  =>  1 pairs (_) / B6 = 9  =>  2 pairs (_)
H7,I9: 9.. / H7 = 9  =>  0 pairs (_) / I9 = 9  =>  0 pairs (_)
* DURATION: 0:00:08.745061  START: 09:15:08.415416  END: 09:15:17.160477 2020-10-20
* CP COUNT: (11)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
I4,H6: 5.. / I4 = 5 ==>  4 pairs (_) / H6 = 5 ==>  2 pairs (_)
F8,F9: 7.. / F8 = 7 ==>  6 pairs (_) / F9 = 7 ==>  0 pairs (_)
C4,C6: 7.. / C4 = 7 ==>  3 pairs (_) / C6 = 7 ==>  1 pairs (_)
D5,F5: 4.. / D5 = 4 ==>  3 pairs (_) / F5 = 4 ==>  1 pairs (_)
I5,G6: 3.. / I5 = 3 ==>  1 pairs (_) / G6 = 3 ==>  3 pairs (_)
B4,B6: 9.. / B4 = 9 ==>  1 pairs (_) / B6 = 9 ==>  2 pairs (_)
D5,D6: 8.. / D5 = 8 ==>  2 pairs (_) / D6 = 8 ==>  1 pairs (_)
A5,B5: 2.. / A5 = 2 ==>  0 pairs (*) / B5 = 2  =>  0 pairs (X)
* DURATION: 0:01:44.504154  START: 09:15:17.161288  END: 09:17:01.665442 2020-10-20
* REASONING F8,F9: 7..
* DIS # F8: 7 # H7: 4,6 => CTR => H7: 8,9
* DIS # F8: 7 + H7: 8,9 # I9: 2,6 => CTR => I9: 7,8,9
* CNT   2 HDP CHAINS /  27 HYP OPENED
* REASONING I5,G6: 3..
* DIS # G6: 3 # A7: 2,3 => CTR => A7: 5,6,8
* CNT   1 HDP CHAINS /  31 HYP OPENED
* REASONING A5,B5: 2..
* DIS # A5: 2 # B3: 1,3 => CTR => B3: 2,4
* PRF # A5: 2 + B3: 2,4 # A6: 1,3 => SOL
* STA # A5: 2 + B3: 2,4 + A6: 1,3
* CNT   2 HDP CHAINS /   7 HYP OPENED
* DCP COUNT: (8)
* SOLUTION FOUND

Header Info

29672;2011_12;GP;24;11.40;11.40;10.00

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for I4,H6: 5..:

* INC # I4: 5 # G2: 2,3 => UNS
* INC # I4: 5 # I2: 2,3 => UNS
* INC # I4: 5 # G3: 2,3 => UNS
* INC # I4: 5 # I3: 2,3 => UNS
* INC # I4: 5 # C1: 2,3 => UNS
* INC # I4: 5 # E1: 2,3 => UNS
* INC # I4: 5 # C6: 7,8 => UNS
* INC # I4: 5 # C6: 1,3 => UNS
* INC # I4: 5 # F4: 1,9 => UNS
* INC # I4: 5 # E6: 1,9 => UNS
* INC # I4: 5 # B4: 1,9 => UNS
* INC # I4: 5 # B4: 6 => UNS
* INC # I4: 5 # E3: 1,9 => UNS
* INC # I4: 5 # E3: 2,3,4,5 => UNS
* INC # I4: 5 # G6: 7,8 => UNS
* INC # I4: 5 # H6: 7,8 => UNS
* INC # I4: 5 # G9: 7,8 => UNS
* INC # I4: 5 # G9: 2,4 => UNS
* INC # I4: 5 => UNS
* INC # H6: 5 # G2: 1,4 => UNS
* INC # H6: 5 # H2: 1,4 => UNS
* INC # H6: 5 # G3: 1,4 => UNS
* INC # H6: 5 # H3: 1,4 => UNS
* INC # H6: 5 # C1: 1,4 => UNS
* INC # H6: 5 # E1: 1,4 => UNS
* INC # H6: 5 # F1: 1,4 => UNS
* INC # H6: 5 # E4: 1,9 => UNS
* INC # H6: 5 # F4: 1,9 => UNS
* INC # H6: 5 # B6: 1,9 => UNS
* INC # H6: 5 # B6: 3,6 => UNS
* INC # H6: 5 # E3: 1,9 => UNS
* INC # H6: 5 # E3: 2,3,4,5 => UNS
* INC # H6: 5 => UNS
* CNT  33 HDP CHAINS /  33 HYP OPENED

Full list of HDP chains traversed for F8,F9: 7..:

* INC # F8: 7 # A3: 1,3 => UNS
* INC # F8: 7 # A5: 1,3 => UNS
* INC # F8: 7 # A6: 1,3 => UNS
* INC # F8: 7 # B3: 1,3 => UNS
* INC # F8: 7 # B5: 1,3 => UNS
* INC # F8: 7 # B6: 1,3 => UNS
* DIS # F8: 7 # H7: 4,6 => CTR => H7: 8,9
* INC # F8: 7 + H7: 8,9 # D8: 4,6 => UNS
* INC # F8: 7 + H7: 8,9 # D8: 2 => UNS
* DIS # F8: 7 + H7: 8,9 # I9: 2,6 => CTR => I9: 7,8,9
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # A3: 1,3 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # A5: 1,3 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # A6: 1,3 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # B3: 1,3 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # B5: 1,3 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # B6: 1,3 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # D7: 2,4 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # E7: 2,4 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # E9: 2,4 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # D2: 2,4 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # D3: 2,4 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # I9: 8,9 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # I9: 7 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # H2: 8,9 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 # H2: 1,4 => UNS
* INC # F8: 7 + H7: 8,9 + I9: 7,8,9 => UNS
* INC # F9: 7 => UNS
* CNT  27 HDP CHAINS /  27 HYP OPENED

Full list of HDP chains traversed for C4,C6: 7..:

* INC # C4: 7 # G2: 1,8 => UNS
* INC # C4: 7 # G2: 2,3,4 => UNS
* INC # C4: 7 # H6: 1,6 => UNS
* INC # C4: 7 # H6: 5,7 => UNS
* INC # C4: 7 # A5: 1,6 => UNS
* INC # C4: 7 # B5: 1,6 => UNS
* INC # C4: 7 # F5: 1,6 => UNS
* INC # C4: 7 # A5: 3,6 => UNS
* INC # C4: 7 # B5: 3,6 => UNS
* INC # C4: 7 => UNS
* INC # C6: 7 # A5: 1,8 => UNS
* INC # C6: 7 # A6: 1,8 => UNS
* INC # C6: 7 # G4: 1,8 => UNS
* INC # C6: 7 # G4: 7 => UNS
* INC # C6: 7 => UNS
* CNT  15 HDP CHAINS /  15 HYP OPENED

Full list of HDP chains traversed for D5,F5: 4..:

* INC # D5: 4 # D3: 2,9 => UNS
* INC # D5: 4 # E3: 2,9 => UNS
* INC # D5: 4 # I2: 2,9 => UNS
* INC # D5: 4 # I2: 3,8 => UNS
* INC # D5: 4 # D7: 2,9 => UNS
* INC # D5: 4 # D7: 5,6 => UNS
* INC # D5: 4 # F4: 1,6 => UNS
* INC # D5: 4 # F4: 5,9 => UNS
* INC # D5: 4 # A5: 1,6 => UNS
* INC # D5: 4 # B5: 1,6 => UNS
* INC # D5: 4 # H5: 1,6 => UNS
* INC # D5: 4 # D7: 2,6 => UNS
* INC # D5: 4 # D7: 5,9 => UNS
* INC # D5: 4 # A8: 2,6 => UNS
* INC # D5: 4 # B8: 2,6 => UNS
* INC # D5: 4 # I8: 2,6 => UNS
* INC # D5: 4 => UNS
* INC # F5: 4 # D6: 6,8 => UNS
* INC # F5: 4 # D6: 5,9 => UNS
* INC # F5: 4 # A5: 6,8 => UNS
* INC # F5: 4 # H5: 6,8 => UNS
* INC # F5: 4 # I5: 6,8 => UNS
* INC # F5: 4 => UNS
* CNT  23 HDP CHAINS /  23 HYP OPENED

Full list of HDP chains traversed for I5,G6: 3..:

* INC # G6: 3 # A3: 2,3 => UNS
* DIS # G6: 3 # A7: 2,3 => CTR => A7: 5,6,8
* INC # G6: 3 + A7: 5,6,8 # A8: 2,3 => UNS
* INC # G6: 3 + A7: 5,6,8 # A3: 2,3 => UNS
* INC # G6: 3 + A7: 5,6,8 # A8: 2,3 => UNS
* INC # G6: 3 + A7: 5,6,8 # B3: 2,3 => UNS
* INC # G6: 3 + A7: 5,6,8 # B8: 2,3 => UNS
* INC # G6: 3 + A7: 5,6,8 # I4: 6,8 => UNS
* INC # G6: 3 + A7: 5,6,8 # H5: 6,8 => UNS
* INC # G6: 3 + A7: 5,6,8 # H6: 6,8 => UNS
* INC # G6: 3 + A7: 5,6,8 # D5: 6,8 => UNS
* INC # G6: 3 + A7: 5,6,8 # D5: 4 => UNS
* INC # G6: 3 + A7: 5,6,8 # I9: 6,8 => UNS
* INC # G6: 3 + A7: 5,6,8 # I9: 2,7,9 => UNS
* INC # G6: 3 + A7: 5,6,8 # A3: 2,3 => UNS
* INC # G6: 3 + A7: 5,6,8 # A8: 2,3 => UNS
* INC # G6: 3 + A7: 5,6,8 # B3: 2,3 => UNS
* INC # G6: 3 + A7: 5,6,8 # B8: 2,3 => UNS
* INC # G6: 3 + A7: 5,6,8 # I4: 6,8 => UNS
* INC # G6: 3 + A7: 5,6,8 # H5: 6,8 => UNS
* INC # G6: 3 + A7: 5,6,8 # H6: 6,8 => UNS
* INC # G6: 3 + A7: 5,6,8 # D5: 6,8 => UNS
* INC # G6: 3 + A7: 5,6,8 # D5: 4 => UNS
* INC # G6: 3 + A7: 5,6,8 # I9: 6,8 => UNS
* INC # G6: 3 + A7: 5,6,8 # I9: 2,7,9 => UNS
* INC # G6: 3 + A7: 5,6,8 => UNS
* INC # I5: 3 # I3: 2,5 => UNS
* INC # I5: 3 # I3: 7,9 => UNS
* INC # I5: 3 # E1: 2,5 => UNS
* INC # I5: 3 # E1: 1,3,4 => UNS
* INC # I5: 3 => UNS
* CNT  31 HDP CHAINS /  31 HYP OPENED

Full list of HDP chains traversed for B4,B6: 9..:

* INC # B6: 9 # A5: 1,6 => UNS
* INC # B6: 9 # B5: 1,6 => UNS
* INC # B6: 9 # A6: 1,6 => UNS
* INC # B6: 9 # F4: 1,6 => UNS
* INC # B6: 9 # F4: 5,9 => UNS
* INC # B6: 9 # B8: 1,6 => UNS
* INC # B6: 9 # B8: 2,3,4 => UNS
* INC # B6: 9 # E4: 1,5 => UNS
* INC # B6: 9 # F4: 1,5 => UNS
* INC # B6: 9 # H6: 1,5 => UNS
* INC # B6: 9 # H6: 6,7,8 => UNS
* INC # B6: 9 # E1: 1,5 => UNS
* INC # B6: 9 # E3: 1,5 => UNS
* INC # B6: 9 => UNS
* INC # B4: 9 # F4: 1,5 => UNS
* INC # B4: 9 # E6: 1,5 => UNS
* INC # B4: 9 # E1: 1,5 => UNS
* INC # B4: 9 # E3: 1,5 => UNS
* INC # B4: 9 => UNS
* CNT  19 HDP CHAINS /  19 HYP OPENED

Full list of HDP chains traversed for D5,D6: 8..:

* INC # D5: 8 # H6: 1,6 => UNS
* INC # D5: 8 # H6: 5,7,8 => UNS
* INC # D5: 8 # A5: 1,6 => UNS
* INC # D5: 8 # B5: 1,6 => UNS
* INC # D5: 8 # A5: 3,6 => UNS
* INC # D5: 8 # B5: 3,6 => UNS
* INC # D5: 8 => UNS
* INC # D6: 8 # F5: 4,6 => UNS
* INC # D6: 8 # F5: 1 => UNS
* INC # D6: 8 # D7: 4,6 => UNS
* INC # D6: 8 # D8: 4,6 => UNS
* INC # D6: 8 => UNS
* CNT  12 HDP CHAINS /  12 HYP OPENED

Full list of HDP chains traversed for A5,B5: 2..:

* INC # A5: 2 # C1: 1,3 => UNS
* INC # A5: 2 # C2: 1,3 => UNS
* DIS # A5: 2 # B3: 1,3 => CTR => B3: 2,4
* INC # A5: 2 + B3: 2,4 # E3: 1,3 => UNS
* INC # A5: 2 + B3: 2,4 # G3: 1,3 => UNS
* PRF # A5: 2 + B3: 2,4 # A6: 1,3 => SOL
* STA # A5: 2 + B3: 2,4 + A6: 1,3
* CNT   6 HDP CHAINS /   7 HYP OPENED