Analysis of xx-ph-00040209-12_07-base.sdk

Contents

Original Sudoku

level: very deep

Original Sudoku

position: 98.7..6..5..4.......7.9..3.7...3..5...3..42.....1....3.7..8..9...92....6......1.. initial

Autosolve

position: 98.7.36..53.4.......7.9..3.7...3..5...3..42.....1....3.7..8..9...92....6......1.. 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

Deep Constraint Pair Analysis

Time used: 0:00:00.000007

List of important HDP chains detected for E8,E9: 4..:

* DIS # E8: 4 # G8: 7,8 => CTR => G8: 3,5
* CNT   1 HDP CHAINS /  27 HYP OPENED

List of important HDP chains detected for G2,I2: 9..:

* DIS # G2: 9 # G6: 4,8 => CTR => G6: 7
* DIS # G2: 9 + G6: 7 # G8: 4,8 => CTR => G8: 3,5
* CNT   2 HDP CHAINS /  29 HYP OPENED

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

Very Deep Constraint Pair Analysis

Very Deep Constraint Pair Analysis

Time used: 0:00:29.333791

List of important HDP chains detected for E1,I1: 5..:

* PRF # I1: 5 # F2: 1,2 # C4: 1,2 => SOL
* STA # I1: 5 # F2: 1,2 + C4: 1,2
* CNT   1 HDP CHAINS /  44 HYP OPENED

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

Details

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

Positions

98.7..6..5..4.......7.9..3.7...3..5...3..42.....1....3.7..8..9...92....6......1.. initial
98.7.36..53.4.......7.9..3.7...3..5...3..42.....1....3.7..8..9...92....6......1.. autosolve

Classification

level: very deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
D7,D9: 3.. / D7 = 3  =>  1 pairs (_) / D9 = 3  =>  1 pairs (_)
G7,G8: 3.. / G7 = 3  =>  1 pairs (_) / G8 = 3  =>  1 pairs (_)
A8,G8: 3.. / A8 = 3  =>  1 pairs (_) / G8 = 3  =>  1 pairs (_)
A9,D9: 3.. / A9 = 3  =>  1 pairs (_) / D9 = 3  =>  1 pairs (_)
E8,E9: 4.. / E8 = 4  =>  2 pairs (_) / E9 = 4  =>  0 pairs (_)
E1,I1: 5.. / E1 = 5  =>  2 pairs (_) / I1 = 5  =>  5 pairs (_)
H5,H6: 6.. / H5 = 6  =>  2 pairs (_) / H6 = 6  =>  0 pairs (_)
G2,I2: 9.. / G2 = 9  =>  1 pairs (_) / I2 = 9  =>  1 pairs (_)
D9,F9: 9.. / D9 = 9  =>  2 pairs (_) / F9 = 9  =>  0 pairs (_)
* DURATION: 0:00:05.606401  START: 19:09:43.916631  END: 19:09:49.523032 2020-09-30
* CP COUNT: (9)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
E1,I1: 5.. / E1 = 5 ==>  2 pairs (_) / I1 = 5 ==>  5 pairs (_)
D9,F9: 9.. / D9 = 9 ==>  2 pairs (_) / F9 = 9 ==>  0 pairs (_)
H5,H6: 6.. / H5 = 6 ==>  2 pairs (_) / H6 = 6 ==>  0 pairs (_)
E8,E9: 4.. / E8 = 4 ==>  3 pairs (_) / E9 = 4 ==>  0 pairs (_)
G2,I2: 9.. / G2 = 9 ==>  2 pairs (_) / I2 = 9 ==>  1 pairs (_)
A9,D9: 3.. / A9 = 3 ==>  1 pairs (_) / D9 = 3 ==>  1 pairs (_)
A8,G8: 3.. / A8 = 3 ==>  1 pairs (_) / G8 = 3 ==>  1 pairs (_)
G7,G8: 3.. / G7 = 3 ==>  1 pairs (_) / G8 = 3 ==>  1 pairs (_)
D7,D9: 3.. / D7 = 3 ==>  1 pairs (_) / D9 = 3 ==>  1 pairs (_)
* DURATION: 0:01:16.272168  START: 19:09:49.523737  END: 19:11:05.795905 2020-09-30
* REASONING E8,E9: 4..
* DIS # E8: 4 # G8: 7,8 => CTR => G8: 3,5
* CNT   1 HDP CHAINS /  27 HYP OPENED
* REASONING G2,I2: 9..
* DIS # G2: 9 # G6: 4,8 => CTR => G6: 7
* DIS # G2: 9 + G6: 7 # G8: 4,8 => CTR => G8: 3,5
* CNT   2 HDP CHAINS /  29 HYP OPENED
* DCP COUNT: (9)
* INCONCLUSIVE

--------------------------------------------------
* VERY DEEP CONSTRAINT PAIRS (PAIR REDUCTION, RECURSIVE)
E1,I1: 5.. / E1 = 5  =>  0 pairs (X) / I1 = 5 ==>  0 pairs (*)
* DURATION: 0:00:29.330848  START: 19:11:05.903606  END: 19:11:35.234454 2020-09-30
* REASONING E1,I1: 5..
* PRF # I1: 5 # F2: 1,2 # C4: 1,2 => SOL
* STA # I1: 5 # F2: 1,2 + C4: 1,2
* CNT   1 HDP CHAINS /  44 HYP OPENED
* VDCP COUNT: (1)
* SOLUTION FOUND

Header Info

40209;12_07;GP;24;11.50;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for E1,I1: 5..:

* INC # I1: 5 # E2: 1,2 => UNS
* INC # I1: 5 # F2: 1,2 => UNS
* INC # I1: 5 # F3: 1,2 => UNS
* INC # I1: 5 # C1: 1,2 => UNS
* INC # I1: 5 # H1: 1,2 => UNS
* INC # I1: 5 # I3: 4,8 => UNS
* INC # I1: 5 # I3: 1,2 => UNS
* INC # I1: 5 # G4: 4,8 => UNS
* INC # I1: 5 # G6: 4,8 => UNS
* INC # I1: 5 # D7: 3,5 => UNS
* INC # I1: 5 # D7: 6 => UNS
* INC # I1: 5 # H9: 2,4 => UNS
* INC # I1: 5 # I9: 2,4 => UNS
* INC # I1: 5 # A7: 2,4 => UNS
* INC # I1: 5 # C7: 2,4 => UNS
* INC # I1: 5 # I3: 2,4 => UNS
* INC # I1: 5 # I3: 1,8 => UNS
* INC # I1: 5 => UNS
* INC # E1: 5 # F2: 6,8 => UNS
* INC # E1: 5 # F3: 6,8 => UNS
* INC # E1: 5 # D4: 6,8 => UNS
* INC # E1: 5 # D5: 6,8 => UNS
* INC # E1: 5 # E6: 6,7 => UNS
* INC # E1: 5 # F6: 6,7 => UNS
* INC # E1: 5 # H5: 6,7 => UNS
* INC # E1: 5 # H5: 1,8 => UNS
* INC # E1: 5 # E9: 6,7 => UNS
* INC # E1: 5 # E9: 4 => UNS
* INC # E1: 5 => UNS
* CNT  29 HDP CHAINS /  29 HYP OPENED

Full list of HDP chains traversed for D9,F9: 9..:

* INC # D9: 9 # F4: 6,8 => UNS
* INC # D9: 9 # D5: 6,8 => UNS
* INC # D9: 9 # F6: 6,8 => UNS
* INC # D9: 9 # C4: 6,8 => UNS
* INC # D9: 9 # C4: 1,2,4 => UNS
* INC # D9: 9 # D3: 6,8 => UNS
* INC # D9: 9 # D3: 5 => UNS
* INC # D9: 9 # I7: 4,5 => UNS
* INC # D9: 9 # I9: 4,5 => UNS
* INC # D9: 9 # C7: 4,5 => UNS
* INC # D9: 9 # C7: 1,2,6 => UNS
* INC # D9: 9 # G3: 4,5 => UNS
* INC # D9: 9 # G3: 8 => UNS
* INC # D9: 9 => UNS
* INC # F9: 9 => UNS
* CNT  15 HDP CHAINS /  15 HYP OPENED

Full list of HDP chains traversed for H5,H6: 6..:

* INC # H5: 6 # C4: 1,8 => UNS
* INC # H5: 6 # C4: 2,4,6 => UNS
* INC # H5: 6 # I5: 1,8 => UNS
* INC # H5: 6 # I5: 7,9 => UNS
* INC # H5: 6 # A8: 1,8 => UNS
* INC # H5: 6 # A8: 3,4 => UNS
* INC # H5: 6 # E6: 5,7 => UNS
* INC # H5: 6 # F6: 5,7 => UNS
* INC # H5: 6 # E8: 5,7 => UNS
* INC # H5: 6 # E9: 5,7 => UNS
* INC # H5: 6 => UNS
* INC # H6: 6 => UNS
* CNT  12 HDP CHAINS /  12 HYP OPENED

Full list of HDP chains traversed for E8,E9: 4..:

* INC # E8: 4 # C7: 1,5 => UNS
* INC # E8: 4 # C7: 2,4,6 => UNS
* INC # E8: 4 # F8: 1,5 => UNS
* INC # E8: 4 # F8: 7 => UNS
* INC # E8: 4 # B5: 1,5 => UNS
* INC # E8: 4 # B5: 6,9 => UNS
* DIS # E8: 4 # G8: 7,8 => CTR => G8: 3,5
* INC # E8: 4 + G8: 3,5 # H9: 7,8 => UNS
* INC # E8: 4 + G8: 3,5 # I9: 7,8 => UNS
* INC # E8: 4 + G8: 3,5 # H2: 7,8 => UNS
* INC # E8: 4 + G8: 3,5 # H5: 7,8 => UNS
* INC # E8: 4 + G8: 3,5 # H6: 7,8 => UNS
* INC # E8: 4 + G8: 3,5 # C7: 1,5 => UNS
* INC # E8: 4 + G8: 3,5 # C7: 2,4,6 => UNS
* INC # E8: 4 + G8: 3,5 # F8: 1,5 => UNS
* INC # E8: 4 + G8: 3,5 # F8: 7 => UNS
* INC # E8: 4 + G8: 3,5 # B5: 1,5 => UNS
* INC # E8: 4 + G8: 3,5 # B5: 6,9 => UNS
* INC # E8: 4 + G8: 3,5 # G7: 3,5 => UNS
* INC # E8: 4 + G8: 3,5 # G7: 4 => UNS
* INC # E8: 4 + G8: 3,5 # H9: 7,8 => UNS
* INC # E8: 4 + G8: 3,5 # I9: 7,8 => UNS
* INC # E8: 4 + G8: 3,5 # H2: 7,8 => UNS
* INC # E8: 4 + G8: 3,5 # H5: 7,8 => UNS
* INC # E8: 4 + G8: 3,5 # H6: 7,8 => UNS
* INC # E8: 4 + G8: 3,5 => UNS
* INC # E9: 4 => UNS
* CNT  27 HDP CHAINS /  27 HYP OPENED

Full list of HDP chains traversed for G2,I2: 9..:

* INC # G2: 9 # I4: 4,8 => UNS
* DIS # G2: 9 # G6: 4,8 => CTR => G6: 7
* INC # G2: 9 + G6: 7 # H6: 4,8 => UNS
* INC # G2: 9 + G6: 7 # C4: 4,8 => UNS
* INC # G2: 9 + G6: 7 # C4: 1,2,6 => UNS
* INC # G2: 9 + G6: 7 # G3: 4,8 => UNS
* DIS # G2: 9 + G6: 7 # G8: 4,8 => CTR => G8: 3,5
* INC # G2: 9 + G6: 7 + G8: 3,5 # G3: 4,8 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # G3: 5 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # I4: 4,8 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # H6: 4,8 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # C4: 4,8 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # C4: 1,2,6 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # G3: 4,8 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # G3: 5 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # I4: 4,8 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # H6: 4,8 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # C4: 4,8 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # C4: 1,2,6 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # G3: 4,8 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # G3: 5 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # G7: 3,5 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 # G7: 4 => UNS
* INC # G2: 9 + G6: 7 + G8: 3,5 => UNS
* INC # I2: 9 # H2: 7,8 => UNS
* INC # I2: 9 # H2: 1,2 => UNS
* INC # I2: 9 # G6: 7,8 => UNS
* INC # I2: 9 # G8: 7,8 => UNS
* INC # I2: 9 => UNS
* CNT  29 HDP CHAINS /  29 HYP OPENED

Full list of HDP chains traversed for A9,D9: 3..:

* INC # A9: 3 # I7: 4,5 => UNS
* INC # A9: 3 # I9: 4,5 => UNS
* INC # A9: 3 # C7: 4,5 => UNS
* INC # A9: 3 # C7: 1,2,6 => UNS
* INC # A9: 3 # G3: 4,5 => UNS
* INC # A9: 3 # G3: 8 => UNS
* INC # A9: 3 => UNS
* INC # D9: 3 # F7: 5,6 => UNS
* INC # D9: 3 # E9: 5,6 => UNS
* INC # D9: 3 # C7: 5,6 => UNS
* INC # D9: 3 # C7: 1,2,4 => UNS
* INC # D9: 3 # D3: 5,6 => UNS
* INC # D9: 3 # D5: 5,6 => UNS
* INC # D9: 3 => UNS
* CNT  14 HDP CHAINS /  14 HYP OPENED

Full list of HDP chains traversed for A8,G8: 3..:

* INC # A8: 3 # F7: 5,6 => UNS
* INC # A8: 3 # E9: 5,6 => UNS
* INC # A8: 3 # C7: 5,6 => UNS
* INC # A8: 3 # C7: 1,2,4 => UNS
* INC # A8: 3 # D3: 5,6 => UNS
* INC # A8: 3 # D5: 5,6 => UNS
* INC # A8: 3 => UNS
* INC # G8: 3 # I7: 4,5 => UNS
* INC # G8: 3 # I9: 4,5 => UNS
* INC # G8: 3 # C7: 4,5 => UNS
* INC # G8: 3 # C7: 1,2,6 => UNS
* INC # G8: 3 # G3: 4,5 => UNS
* INC # G8: 3 # G3: 8 => UNS
* INC # G8: 3 => UNS
* CNT  14 HDP CHAINS /  14 HYP OPENED

Full list of HDP chains traversed for G7,G8: 3..:

* INC # G7: 3 # F7: 5,6 => UNS
* INC # G7: 3 # E9: 5,6 => UNS
* INC # G7: 3 # C7: 5,6 => UNS
* INC # G7: 3 # C7: 1,2,4 => UNS
* INC # G7: 3 # D3: 5,6 => UNS
* INC # G7: 3 # D5: 5,6 => UNS
* INC # G7: 3 => UNS
* INC # G8: 3 # I7: 4,5 => UNS
* INC # G8: 3 # I9: 4,5 => UNS
* INC # G8: 3 # C7: 4,5 => UNS
* INC # G8: 3 # C7: 1,2,6 => UNS
* INC # G8: 3 # G3: 4,5 => UNS
* INC # G8: 3 # G3: 8 => UNS
* INC # G8: 3 => UNS
* CNT  14 HDP CHAINS /  14 HYP OPENED

Full list of HDP chains traversed for D7,D9: 3..:

* INC # D7: 3 # I7: 4,5 => UNS
* INC # D7: 3 # I9: 4,5 => UNS
* INC # D7: 3 # C7: 4,5 => UNS
* INC # D7: 3 # C7: 1,2,6 => UNS
* INC # D7: 3 # G3: 4,5 => UNS
* INC # D7: 3 # G3: 8 => UNS
* INC # D7: 3 => UNS
* INC # D9: 3 # F7: 5,6 => UNS
* INC # D9: 3 # E9: 5,6 => UNS
* INC # D9: 3 # C7: 5,6 => UNS
* INC # D9: 3 # C7: 1,2,4 => UNS
* INC # D9: 3 # D3: 5,6 => UNS
* INC # D9: 3 # D5: 5,6 => UNS
* INC # D9: 3 => UNS
* CNT  14 HDP CHAINS /  14 HYP OPENED

A2. Very Deep Constraint Pair Analysis

Full list of HDP chains traversed for E1,I1: 5..:

* INC # I1: 5 # E2: 1,2 => UNS
* INC # I1: 5 # F2: 1,2 => UNS
* INC # I1: 5 # F3: 1,2 => UNS
* INC # I1: 5 # C1: 1,2 => UNS
* INC # I1: 5 # H1: 1,2 => UNS
* INC # I1: 5 # I3: 4,8 => UNS
* INC # I1: 5 # I3: 1,2 => UNS
* INC # I1: 5 # G4: 4,8 => UNS
* INC # I1: 5 # G6: 4,8 => UNS
* INC # I1: 5 # D7: 3,5 => UNS
* INC # I1: 5 # D7: 6 => UNS
* INC # I1: 5 # H9: 2,4 => UNS
* INC # I1: 5 # I9: 2,4 => UNS
* INC # I1: 5 # A7: 2,4 => UNS
* INC # I1: 5 # C7: 2,4 => UNS
* INC # I1: 5 # I3: 2,4 => UNS
* INC # I1: 5 # I3: 1,8 => UNS
* INC # I1: 5 # E2: 1,2 # C1: 1,2 => UNS
* INC # I1: 5 # E2: 1,2 # H1: 1,2 => UNS
* INC # I1: 5 # E2: 1,2 # C2: 1,2 => UNS
* INC # I1: 5 # E2: 1,2 # H2: 1,2 => UNS
* INC # I1: 5 # E2: 1,2 # I2: 1,2 => UNS
* INC # I1: 5 # E2: 1,2 # D3: 6,8 => UNS
* INC # I1: 5 # E2: 1,2 # F3: 6,8 => UNS
* INC # I1: 5 # E2: 1,2 # F4: 6,8 => UNS
* INC # I1: 5 # E2: 1,2 # F6: 6,8 => UNS
* INC # I1: 5 # E2: 1,2 # I3: 4,8 => UNS
* INC # I1: 5 # E2: 1,2 # I3: 1,2 => UNS
* INC # I1: 5 # E2: 1,2 # G4: 4,8 => UNS
* INC # I1: 5 # E2: 1,2 # G6: 4,8 => UNS
* INC # I1: 5 # E2: 1,2 # D7: 3,5 => UNS
* INC # I1: 5 # E2: 1,2 # D7: 6 => UNS
* INC # I1: 5 # E2: 1,2 # H9: 2,4 => UNS
* INC # I1: 5 # E2: 1,2 # I9: 2,4 => UNS
* INC # I1: 5 # E2: 1,2 # A7: 2,4 => UNS
* INC # I1: 5 # E2: 1,2 # C7: 2,4 => UNS
* INC # I1: 5 # E2: 1,2 # I3: 2,4 => UNS
* INC # I1: 5 # E2: 1,2 # I3: 1,8 => UNS
* INC # I1: 5 # E2: 1,2 => UNS
* INC # I1: 5 # F2: 1,2 # A3: 1,2 => UNS
* INC # I1: 5 # F2: 1,2 # B3: 1,2 => UNS
* PRF # I1: 5 # F2: 1,2 # C4: 1,2 => SOL
* STA # I1: 5 # F2: 1,2 + C4: 1,2
* CNT  42 HDP CHAINS /  44 HYP OPENED