Analysis of xx-ph-00017997-Kz1_b-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.76....7.....9...56....8.4..3..7...2......5.....8.1...9.4.6.....63.........1..2 initial

Autosolve

position: 98.76....7.....9...56....874..3..7...2......5.....8.1...9.4.6.....63.........1..2 autosolve
Autosolve

Pair Reduction Variants

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 C4,I4: 8..:

* DIS # I4: 8 # G1: 3,4 => CTR => G1: 1,2,5
* DIS # C4: 8 # H4: 6,9 => CTR => H4: 2
* CNT   2 HDP CHAINS /  48 HYP OPENED

List of important HDP chains detected for I4,G5: 8..:

* DIS # I4: 8 # G1: 3,4 => CTR => G1: 1,2,5
* DIS # G5: 8 # H4: 6,9 => CTR => H4: 2
* CNT   2 HDP CHAINS /  48 HYP OPENED

List of important HDP chains detected for A9,B9: 6..:

* PRF # A9: 6 # I6: 3,4 => SOL
* STA # A9: 6 + I6: 3,4
* CNT   1 HDP CHAINS /  10 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

98.76....7.....9...56....8.4..3..7...2......5.....8.1...9.4.6.....63.........1..2 initial
98.76....7.....9...56....874..3..7...2......5.....8.1...9.4.6.....63.........1..2 autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
H4,G6: 2.. / H4 = 2  =>  1 pairs (_) / G6 = 2  =>  1 pairs (_)
H2,I2: 6.. / H2 = 6  =>  1 pairs (_) / I2 = 6  =>  2 pairs (_)
F4,F5: 6.. / F4 = 6  =>  3 pairs (_) / F5 = 6  =>  0 pairs (_)
A9,B9: 6.. / A9 = 6  =>  3 pairs (_) / B9 = 6  =>  1 pairs (_)
D2,E2: 8.. / D2 = 8  =>  2 pairs (_) / E2 = 8  =>  0 pairs (_)
I4,G5: 8.. / I4 = 8  =>  3 pairs (_) / G5 = 8  =>  1 pairs (_)
C4,I4: 8.. / C4 = 8  =>  1 pairs (_) / I4 = 8  =>  3 pairs (_)
E2,E9: 8.. / E2 = 8  =>  0 pairs (_) / E9 = 8  =>  2 pairs (_)
B4,B6: 9.. / B4 = 9  =>  2 pairs (_) / B6 = 9  =>  1 pairs (_)
* DURATION: 0:00:05.909079  START: 15:21:10.773346  END: 15:21:16.682425 2020-12-05
* CP COUNT: (9)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
C4,I4: 8.. / C4 = 8 ==>  2 pairs (_) / I4 = 8 ==>  3 pairs (_)
I4,G5: 8.. / I4 = 8 ==>  3 pairs (_) / G5 = 8 ==>  2 pairs (_)
A9,B9: 6.. / A9 = 6 ==>  0 pairs (*) / B9 = 6  =>  0 pairs (X)
* DURATION: 0:00:53.971156  START: 15:21:16.683077  END: 15:22:10.654233 2020-12-05
* REASONING C4,I4: 8..
* DIS # I4: 8 # G1: 3,4 => CTR => G1: 1,2,5
* DIS # C4: 8 # H4: 6,9 => CTR => H4: 2
* CNT   2 HDP CHAINS /  48 HYP OPENED
* REASONING I4,G5: 8..
* DIS # I4: 8 # G1: 3,4 => CTR => G1: 1,2,5
* DIS # G5: 8 # H4: 6,9 => CTR => H4: 2
* CNT   2 HDP CHAINS /  48 HYP OPENED
* REASONING A9,B9: 6..
* PRF # A9: 6 # I6: 3,4 => SOL
* STA # A9: 6 + I6: 3,4
* CNT   1 HDP CHAINS /  10 HYP OPENED
* DCP COUNT: (3)
* SOLUTION FOUND

Header Info

17997;Kz1 b;GP;23;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for C4,I4: 8..:

* INC # I4: 8 # E4: 1,5 => UNS
* INC # I4: 8 # E4: 2,9 => UNS
* INC # I4: 8 # C8: 1,5 => UNS
* INC # I4: 8 # C8: 2,4,7,8 => UNS
* INC # I4: 8 # H5: 3,4 => UNS
* INC # I4: 8 # G6: 3,4 => UNS
* INC # I4: 8 # I6: 3,4 => UNS
* DIS # I4: 8 # G1: 3,4 => CTR => G1: 1,2,5
* INC # I4: 8 + G1: 1,2,5 # G3: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G9: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # H5: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G6: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # I6: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G3: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G9: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # A7: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # B7: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # I1: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # I2: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # E4: 1,5 => UNS
* INC # I4: 8 + G1: 1,2,5 # E4: 2,9 => UNS
* INC # I4: 8 + G1: 1,2,5 # C8: 1,5 => UNS
* INC # I4: 8 + G1: 1,2,5 # C8: 2,4,7,8 => UNS
* INC # I4: 8 + G1: 1,2,5 # H5: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G6: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # I6: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G3: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G9: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # A7: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # B7: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # I1: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # I2: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 => UNS
* DIS # C4: 8 # H4: 6,9 => CTR => H4: 2
* INC # C4: 8 + H4: 2 # H5: 6,9 => UNS
* INC # C4: 8 + H4: 2 # I6: 6,9 => UNS
* INC # C4: 8 + H4: 2 # B4: 6,9 => UNS
* INC # C4: 8 + H4: 2 # F4: 6,9 => UNS
* INC # C4: 8 + H4: 2 # H5: 6,9 => UNS
* INC # C4: 8 + H4: 2 # I6: 6,9 => UNS
* INC # C4: 8 + H4: 2 # B4: 6,9 => UNS
* INC # C4: 8 + H4: 2 # F4: 6,9 => UNS
* INC # C4: 8 + H4: 2 # H5: 3,4 => UNS
* INC # C4: 8 + H4: 2 # I6: 3,4 => UNS
* INC # C4: 8 + H4: 2 # G1: 3,4 => UNS
* INC # C4: 8 + H4: 2 # G3: 3,4 => UNS
* INC # C4: 8 + H4: 2 # G9: 3,4 => UNS
* INC # C4: 8 + H4: 2 => UNS
* CNT  48 HDP CHAINS /  48 HYP OPENED

Full list of HDP chains traversed for I4,G5: 8..:

* INC # I4: 8 # E4: 1,5 => UNS
* INC # I4: 8 # E4: 2,9 => UNS
* INC # I4: 8 # C8: 1,5 => UNS
* INC # I4: 8 # C8: 2,4,7,8 => UNS
* INC # I4: 8 # H5: 3,4 => UNS
* INC # I4: 8 # G6: 3,4 => UNS
* INC # I4: 8 # I6: 3,4 => UNS
* DIS # I4: 8 # G1: 3,4 => CTR => G1: 1,2,5
* INC # I4: 8 + G1: 1,2,5 # G3: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G9: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # H5: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G6: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # I6: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G3: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G9: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # A7: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # B7: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # I1: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # I2: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # E4: 1,5 => UNS
* INC # I4: 8 + G1: 1,2,5 # E4: 2,9 => UNS
* INC # I4: 8 + G1: 1,2,5 # C8: 1,5 => UNS
* INC # I4: 8 + G1: 1,2,5 # C8: 2,4,7,8 => UNS
* INC # I4: 8 + G1: 1,2,5 # H5: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G6: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # I6: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G3: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # G9: 3,4 => UNS
* INC # I4: 8 + G1: 1,2,5 # A7: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # B7: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # I1: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 # I2: 1,3 => UNS
* INC # I4: 8 + G1: 1,2,5 => UNS
* DIS # G5: 8 # H4: 6,9 => CTR => H4: 2
* INC # G5: 8 + H4: 2 # H5: 6,9 => UNS
* INC # G5: 8 + H4: 2 # I6: 6,9 => UNS
* INC # G5: 8 + H4: 2 # B4: 6,9 => UNS
* INC # G5: 8 + H4: 2 # F4: 6,9 => UNS
* INC # G5: 8 + H4: 2 # H5: 6,9 => UNS
* INC # G5: 8 + H4: 2 # I6: 6,9 => UNS
* INC # G5: 8 + H4: 2 # B4: 6,9 => UNS
* INC # G5: 8 + H4: 2 # F4: 6,9 => UNS
* INC # G5: 8 + H4: 2 # H5: 3,4 => UNS
* INC # G5: 8 + H4: 2 # I6: 3,4 => UNS
* INC # G5: 8 + H4: 2 # G1: 3,4 => UNS
* INC # G5: 8 + H4: 2 # G3: 3,4 => UNS
* INC # G5: 8 + H4: 2 # G9: 3,4 => UNS
* INC # G5: 8 + H4: 2 => UNS
* CNT  48 HDP CHAINS /  48 HYP OPENED

Full list of HDP chains traversed for A9,B9: 6..:

* INC # A9: 6 # F4: 6,9 => UNS
* INC # A9: 6 # H4: 6,9 => UNS
* INC # A9: 6 # I4: 6,9 => UNS
* INC # A9: 6 # C6: 3,5 => UNS
* INC # A9: 6 # C6: 7 => UNS
* INC # A9: 6 # A7: 3,5 => UNS
* INC # A9: 6 # A7: 1,2,8 => UNS
* INC # A9: 6 # I6: 6,9 => UNS
* PRF # A9: 6 # I6: 3,4 => SOL
* STA # A9: 6 + I6: 3,4
* CNT   9 HDP CHAINS /  10 HYP OPENED