Analysis of xx-ph-00029929-2011_12-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.76....54.3.......7..58..8....95...7..5..2....6...1..9...74......1..3.........2 initial

Autosolve

position: 98.76....54.3.......7..58..8....95...7..5..2....6...1..9...74......1..3.........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: 0:00:09.532619

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

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000021

List of important HDP chains detected for H1,I1: 5..:

* DIS # I1: 5 # C1: 1,2 => CTR => C1: 3
* DIS # I1: 5 + C1: 3 # C7: 5,8 => CTR => C7: 1,2,6
* DIS # I1: 5 + C1: 3 + C7: 1,2,6 # A7: 1,6 => CTR => A7: 2,3
* PRF # I1: 5 + C1: 3 + C7: 1,2,6 + A7: 2,3 # G9: 7,9 => SOL
* STA # I1: 5 + C1: 3 + C7: 1,2,6 + A7: 2,3 + G9: 7,9
* CNT   4 HDP CHAINS /  25 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....54.3.......7..58..8....95...7..5..2....6...1..9...74......1..3.........2 initial
98.76....54.3.......7..58..8....95...7..5..2....6...1..9...74......1..3.........2 autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* PAIRS (1)
H1: 4,5

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
I7,G9: 1.. / I7 = 1  =>  3 pairs (_) / G9 = 1  =>  3 pairs (_)
G1,G2: 2.. / G1 = 2  =>  3 pairs (_) / G2 = 2  =>  5 pairs (_)
H1,I1: 5.. / H1 = 5  =>  1 pairs (_) / I1 = 5  =>  6 pairs (_)
B6,C6: 5.. / B6 = 5  =>  2 pairs (_) / C6 = 5  =>  3 pairs (_)
F8,F9: 6.. / F8 = 6  =>  3 pairs (_) / F9 = 6  =>  1 pairs (_)
E4,E6: 7.. / E4 = 7  =>  2 pairs (_) / E6 = 7  =>  2 pairs (_)
A8,A9: 7.. / A8 = 7  =>  2 pairs (_) / A9 = 7  =>  1 pairs (_)
E2,F2: 8.. / E2 = 8  =>  4 pairs (_) / F2 = 8  =>  2 pairs (_)
I5,I6: 8.. / I5 = 8  =>  3 pairs (_) / I6 = 8  =>  1 pairs (_)
H7,H9: 8.. / H7 = 8  =>  3 pairs (_) / H9 = 8  =>  2 pairs (_)
C5,C6: 9.. / C5 = 9  =>  2 pairs (_) / C6 = 9  =>  3 pairs (_)
* DURATION: 0:00:06.823621  START: 10:53:14.637764  END: 10:53:21.461385 2020-12-11
* CP COUNT: (11)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
H1,I1: 5.. / H1 = 5  =>  0 pairs (X) / I1 = 5 ==>  0 pairs (*)
* DURATION: 0:00:20.671302  START: 10:53:32.813052  END: 10:53:53.484354 2020-12-11
* REASONING H1,I1: 5..
* DIS # I1: 5 # C1: 1,2 => CTR => C1: 3
* DIS # I1: 5 + C1: 3 # C7: 5,8 => CTR => C7: 1,2,6
* DIS # I1: 5 + C1: 3 + C7: 1,2,6 # A7: 1,6 => CTR => A7: 2,3
* PRF # I1: 5 + C1: 3 + C7: 1,2,6 + A7: 2,3 # G9: 7,9 => SOL
* STA # I1: 5 + C1: 3 + C7: 1,2,6 + A7: 2,3 + G9: 7,9
* CNT   4 HDP CHAINS /  25 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

29929;2011_12;GP;24;11.30;11.30;2.60

Appendix: Full HDP Chains

A1. Pair Reduction Analysis

Full list of HDP chains traversed:

* INC # I1: 4,5 => UNS
* INC # I1: 1,3 => UNS
* CNT   2 HDP CHAINS /   2 HYP OPENED

A2. Pair Reduction

Full list of HDP chains traversed:

* INC # I1: 4,5 => UNS
* INC # I1: 1,3 => UNS
* CNT   2 HDP CHAINS /   2 HYP OPENED

A3. Deep Pair Reduction

Full list of HDP chains traversed:

* INC # I1: 4,5 => UNS
* INC # I1: 1,3 => UNS
* INC # I1: 4,5 # F2: 1,2 => UNS
* INC # I1: 4,5 # D3: 1,2 => UNS
* INC # I1: 4,5 # C1: 1,2 => UNS
* INC # I1: 4,5 # G1: 1,2 => UNS
* INC # I1: 4,5 # G2: 6,9 => UNS
* INC # I1: 4,5 # H2: 6,9 => UNS
* INC # I1: 4,5 # I2: 6,9 => UNS
* INC # I1: 4,5 # I3: 6,9 => UNS
* INC # I1: 4,5 # H9: 6,9 => UNS
* INC # I1: 4,5 # H9: 5,7,8 => UNS
* INC # I1: 4,5 => UNS
* INC # I1: 1,3 # E2: 2,9 => UNS
* INC # I1: 1,3 # D3: 2,9 => UNS
* INC # I1: 1,3 # G1: 1,3 => UNS
* INC # I1: 1,3 # I3: 1,3 => UNS
* INC # I1: 1,3 # C1: 1,3 => UNS
* INC # I1: 1,3 # C1: 2 => UNS
* INC # I1: 1,3 # H9: 6,8 => UNS
* INC # I1: 1,3 # H9: 7,9 => UNS
* INC # I1: 1,3 # C7: 6,8 => UNS
* INC # I1: 1,3 # C7: 1,2,3,5 => UNS
* INC # I1: 1,3 => UNS
* CNT  24 HDP CHAINS /  24 HYP OPENED

A4. Deep Constraint Pair Analysis

Full list of HDP chains traversed for H1,I1: 5..:

* INC # I1: 5 # F2: 1,2 => UNS
* INC # I1: 5 # D3: 1,2 => UNS
* DIS # I1: 5 # C1: 1,2 => CTR => C1: 3
* INC # I1: 5 + C1: 3 # F2: 1,2 => UNS
* INC # I1: 5 + C1: 3 # D3: 1,2 => UNS
* INC # I1: 5 + C1: 3 # H2: 6,9 => UNS
* INC # I1: 5 + C1: 3 # H2: 7 => UNS
* INC # I1: 5 + C1: 3 # I4: 6,7 => UNS
* INC # I1: 5 + C1: 3 # I4: 4 => UNS
* INC # I1: 5 + C1: 3 # H2: 6,7 => UNS
* INC # I1: 5 + C1: 3 # H2: 9 => UNS
* DIS # I1: 5 + C1: 3 # C7: 5,8 => CTR => C7: 1,2,6
* INC # I1: 5 + C1: 3 + C7: 1,2,6 # D7: 5,8 => UNS
* INC # I1: 5 + C1: 3 + C7: 1,2,6 # D7: 5,8 => UNS
* INC # I1: 5 + C1: 3 + C7: 1,2,6 # D7: 2 => UNS
* INC # I1: 5 + C1: 3 + C7: 1,2,6 # D7: 5,8 => UNS
* INC # I1: 5 + C1: 3 + C7: 1,2,6 # D7: 2 => UNS
* INC # I1: 5 + C1: 3 + C7: 1,2,6 # G9: 1,6 => UNS
* INC # I1: 5 + C1: 3 + C7: 1,2,6 # G9: 7,9 => UNS
* DIS # I1: 5 + C1: 3 + C7: 1,2,6 # A7: 1,6 => CTR => A7: 2,3
* INC # I1: 5 + C1: 3 + C7: 1,2,6 + A7: 2,3 # I2: 1,6 => UNS
* INC # I1: 5 + C1: 3 + C7: 1,2,6 + A7: 2,3 # I2: 7 => UNS
* INC # I1: 5 + C1: 3 + C7: 1,2,6 + A7: 2,3 # G9: 1,6 => UNS
* PRF # I1: 5 + C1: 3 + C7: 1,2,6 + A7: 2,3 # G9: 7,9 => SOL
* STA # I1: 5 + C1: 3 + C7: 1,2,6 + A7: 2,3 + G9: 7,9
* CNT  24 HDP CHAINS /  25 HYP OPENED