Analysis of xx-ph-00001001-H243-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.76....76....9....5.......4.....3...98..7.......2..1..65..8......3...4.....1.2. initial

Autosolve

position: 98.76....76....9....5.......4.....3...98..7.......2..1..65..8......3...4.....1.2. autosolve
Autosolve

Pair Reduction Variants

Deep Pair Reduction

Deep Pair Reduction

Time used: 0:00:00.181015

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000013

List of important HDP chains detected for H5,G6: 4..:

* DIS # H5: 4 # G4: 5,6 => CTR => G4: 2
* DIS # H5: 4 + G4: 2 # A5: 5,6 => CTR => A5: 1,2,3
* CNT   2 HDP CHAINS /  65 HYP OPENED

List of important HDP chains detected for F5,D6: 3..:

* DIS # F5: 3 # E2: 4,5 => CTR => E2: 1,2,8
* CNT   1 HDP CHAINS /  20 HYP OPENED

List of important HDP chains detected for G4,I5: 2..:

* DIS # I5: 2 # G1: 3,5 => CTR => G1: 1,2,4
* DIS # I5: 2 + G1: 1,2,4 # G6: 5,6 => CTR => G6: 4
* PRF # I5: 2 + G1: 1,2,4 + G6: 4 # G9: 5,6 => SOL
* STA # I5: 2 + G1: 1,2,4 + G6: 4 + G9: 5,6
* CNT   3 HDP CHAINS /  15 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....76....9....5.......4.....3...98..7.......2..1..65..8......3...4.....1.2. initial
98.76....76....9....5.......4.....3...98..7.......2..1..65..8......3...4.....1.2. autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* PAIRS (2)
I4: 8,9
H6: 8,9

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
G4,I5: 2.. / G4 = 2  =>  3 pairs (_) / I5 = 2  =>  4 pairs (_)
E7,D8: 2.. / E7 = 2  =>  3 pairs (_) / D8 = 2  =>  2 pairs (_)
F5,D6: 3.. / F5 = 3  =>  3 pairs (_) / D6 = 3  =>  4 pairs (_)
H5,G6: 4.. / H5 = 4  =>  5 pairs (_) / G6 = 4  =>  3 pairs (_)
H3,I3: 7.. / H3 = 7  =>  3 pairs (_) / I3 = 7  =>  3 pairs (_)
I4,H6: 8.. / I4 = 8  =>  1 pairs (_) / H6 = 8  =>  3 pairs (_)
F8,E9: 8.. / F8 = 8  =>  3 pairs (_) / E9 = 8  =>  2 pairs (_)
I4,H6: 9.. / I4 = 9  =>  3 pairs (_) / H6 = 9  =>  1 pairs (_)
* DURATION: 0:00:06.212627  START: 23:33:24.731805  END: 23:33:30.944432 2020-11-23
* CP COUNT: (8)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
H5,G6: 4.. / H5 = 4 ==>  6 pairs (_) / G6 = 4 ==>  3 pairs (_)
F5,D6: 3.. / F5 = 3 ==>  3 pairs (_) / D6 = 3 ==>  4 pairs (_)
G4,I5: 2.. / G4 = 2  =>  0 pairs (X) / I5 = 2 ==>  0 pairs (*)
* DURATION: 0:00:57.526646  START: 23:33:31.701849  END: 23:34:29.228495 2020-11-23
* REASONING H5,G6: 4..
* DIS # H5: 4 # G4: 5,6 => CTR => G4: 2
* DIS # H5: 4 + G4: 2 # A5: 5,6 => CTR => A5: 1,2,3
* CNT   2 HDP CHAINS /  65 HYP OPENED
* REASONING F5,D6: 3..
* DIS # F5: 3 # E2: 4,5 => CTR => E2: 1,2,8
* CNT   1 HDP CHAINS /  20 HYP OPENED
* REASONING G4,I5: 2..
* DIS # I5: 2 # G1: 3,5 => CTR => G1: 1,2,4
* DIS # I5: 2 + G1: 1,2,4 # G6: 5,6 => CTR => G6: 4
* PRF # I5: 2 + G1: 1,2,4 + G6: 4 # G9: 5,6 => SOL
* STA # I5: 2 + G1: 1,2,4 + G6: 4 + G9: 5,6
* CNT   3 HDP CHAINS /  15 HYP OPENED
* DCP COUNT: (3)
* SOLUTION FOUND

Header Info

1001;H243;GP;22;11.30;11.30;3.40

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for H5,G6: 4..:

* INC # H5: 4 # G1: 1,5 => UNS
* INC # H5: 4 # H2: 1,5 => UNS
* INC # H5: 4 # H8: 1,5 => UNS
* INC # H5: 4 # H8: 6,7,9 => UNS
* INC # H5: 4 # E4: 1,5 => UNS
* INC # H5: 4 # E4: 7,9 => UNS
* INC # H5: 4 # A5: 1,5 => UNS
* INC # H5: 4 # B5: 1,5 => UNS
* INC # H5: 4 # E2: 1,5 => UNS
* INC # H5: 4 # E2: 2,4,8 => UNS
* DIS # H5: 4 # G4: 5,6 => CTR => G4: 2
* INC # H5: 4 + G4: 2 # A6: 5,6 => UNS
* INC # H5: 4 + G4: 2 # A6: 3,8 => UNS
* INC # H5: 4 + G4: 2 # G8: 5,6 => UNS
* INC # H5: 4 + G4: 2 # G9: 5,6 => UNS
* INC # H5: 4 + G4: 2 # G1: 1,5 => UNS
* INC # H5: 4 + G4: 2 # H2: 1,5 => UNS
* INC # H5: 4 + G4: 2 # H8: 1,5 => UNS
* INC # H5: 4 + G4: 2 # H8: 6,7,9 => UNS
* INC # H5: 4 + G4: 2 # E4: 1,5 => UNS
* INC # H5: 4 + G4: 2 # E4: 7,9 => UNS
* INC # H5: 4 + G4: 2 # A5: 1,5 => UNS
* INC # H5: 4 + G4: 2 # B5: 1,5 => UNS
* INC # H5: 4 + G4: 2 # E2: 1,5 => UNS
* INC # H5: 4 + G4: 2 # E2: 2,4,8 => UNS
* DIS # H5: 4 + G4: 2 # A5: 5,6 => CTR => A5: 1,2,3
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # F5: 5,6 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # F5: 5,6 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # F5: 3 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # I9: 5,6 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # I9: 3,7,9 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # F5: 5,6 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # F5: 3 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # I9: 5,6 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # I9: 3,7,9 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # A6: 5,6 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # A6: 3,8 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # G8: 5,6 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # G9: 5,6 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # G1: 1,5 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # H2: 1,5 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # H8: 1,5 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # H8: 6,7,9 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # E4: 1,5 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # E4: 7,9 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # B5: 1,5 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # B5: 2,3 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # E2: 1,5 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # E2: 2,4,8 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # F5: 5,6 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # F5: 3 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # I9: 5,6 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # I9: 3,7,9 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # A6: 5,6 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # A6: 3,8 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # G8: 5,6 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 # G9: 5,6 => UNS
* INC # H5: 4 + G4: 2 + A5: 1,2,3 => UNS
* INC # G6: 4 # G4: 5,6 => UNS
* INC # G6: 4 # I5: 5,6 => UNS
* INC # G6: 4 # A5: 5,6 => UNS
* INC # G6: 4 # F5: 5,6 => UNS
* INC # G6: 4 # H8: 5,6 => UNS
* INC # G6: 4 # H8: 1,7,9 => UNS
* INC # G6: 4 => UNS
* CNT  65 HDP CHAINS /  65 HYP OPENED

Full list of HDP chains traversed for F5,D6: 3..:

* INC # D6: 3 # E6: 5,7 => UNS
* INC # D6: 3 # E6: 4,9 => UNS
* INC # D6: 3 # B8: 5,7 => UNS
* INC # D6: 3 # B9: 5,7 => UNS
* INC # D6: 3 # C4: 7,8 => UNS
* INC # D6: 3 # C4: 1,2 => UNS
* INC # D6: 3 # C8: 7,8 => UNS
* INC # D6: 3 # C9: 7,8 => UNS
* INC # D6: 3 => UNS
* DIS # F5: 3 # E2: 4,5 => CTR => E2: 1,2,8
* INC # F5: 3 + E2: 1,2,8 # F2: 4,5 => UNS
* INC # F5: 3 + E2: 1,2,8 # F2: 4,5 => UNS
* INC # F5: 3 + E2: 1,2,8 # F2: 8 => UNS
* INC # F5: 3 + E2: 1,2,8 # G1: 4,5 => UNS
* INC # F5: 3 + E2: 1,2,8 # H1: 4,5 => UNS
* INC # F5: 3 + E2: 1,2,8 # F2: 4,5 => UNS
* INC # F5: 3 + E2: 1,2,8 # F2: 8 => UNS
* INC # F5: 3 + E2: 1,2,8 # G1: 4,5 => UNS
* INC # F5: 3 + E2: 1,2,8 # H1: 4,5 => UNS
* INC # F5: 3 + E2: 1,2,8 => UNS
* CNT  20 HDP CHAINS /  20 HYP OPENED

Full list of HDP chains traversed for G4,I5: 2..:

* DIS # I5: 2 # G1: 3,5 => CTR => G1: 1,2,4
* INC # I5: 2 + G1: 1,2,4 # I2: 3,5 => UNS
* INC # I5: 2 + G1: 1,2,4 # I2: 3,5 => UNS
* INC # I5: 2 + G1: 1,2,4 # I2: 8 => UNS
* INC # I5: 2 + G1: 1,2,4 # F1: 3,5 => UNS
* INC # I5: 2 + G1: 1,2,4 # F1: 4 => UNS
* INC # I5: 2 + G1: 1,2,4 # I9: 3,5 => UNS
* INC # I5: 2 + G1: 1,2,4 # I9: 6,7,9 => UNS
* INC # I5: 2 + G1: 1,2,4 # H5: 5,6 => UNS
* DIS # I5: 2 + G1: 1,2,4 # G6: 5,6 => CTR => G6: 4
* INC # I5: 2 + G1: 1,2,4 + G6: 4 # A4: 5,6 => UNS
* INC # I5: 2 + G1: 1,2,4 + G6: 4 # F4: 5,6 => UNS
* INC # I5: 2 + G1: 1,2,4 + G6: 4 # G8: 5,6 => UNS
* PRF # I5: 2 + G1: 1,2,4 + G6: 4 # G9: 5,6 => SOL
* STA # I5: 2 + G1: 1,2,4 + G6: 4 + G9: 5,6
* CNT  14 HDP CHAINS /  15 HYP OPENED