Analysis of xx-ph-00000987-H231-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 9876.....65....7............4..6..3...87..6.......2..1..59..8......1...4.....3.2. initial

Autosolve

position: 9876.....65....7............4..6..3...87..6.......2..1..59..8......1...4.....3.2. autosolve
Autosolve

Pair Reduction Variants

Deep Pair Reduction

Deep Pair Reduction

Time used: 0:00:00.187961

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 G4,I5: 2..:

* PRF # I5: 2 # G1: 3,5 => SOL
* STA # I5: 2 + G1: 3,5
* CNT   1 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

9876.....65....7............4..6..3...87..6.......2..1..59..8......1...4.....3.2. initial
9876.....65....7............4..6..3...87..6.......2..1..59..8......1...4.....3.2. autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* PAIRS (2)
I4: 7,8
H6: 7,8

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
H7,G9: 1.. / H7 = 1  =>  4 pairs (_) / G9 = 1  =>  3 pairs (_)
G4,I5: 2.. / G4 = 2  =>  4 pairs (_) / I5 = 2  =>  4 pairs (_)
E7,D8: 2.. / E7 = 2  =>  3 pairs (_) / D8 = 2  =>  3 pairs (_)
I7,G8: 3.. / I7 = 3  =>  4 pairs (_) / G8 = 3  =>  3 pairs (_)
H5,G6: 4.. / H5 = 4  =>  4 pairs (_) / G6 = 4  =>  3 pairs (_)
H3,I3: 6.. / H3 = 6  =>  3 pairs (_) / I3 = 6  =>  3 pairs (_)
B6,C6: 6.. / B6 = 6  =>  3 pairs (_) / C6 = 6  =>  2 pairs (_)
F7,F8: 6.. / F7 = 6  =>  4 pairs (_) / F8 = 6  =>  3 pairs (_)
E3,F3: 7.. / E3 = 7  =>  5 pairs (_) / F3 = 7  =>  3 pairs (_)
I4,H6: 7.. / I4 = 7  =>  1 pairs (_) / H6 = 7  =>  3 pairs (_)
A4,I4: 7.. / A4 = 7  =>  3 pairs (_) / I4 = 7  =>  1 pairs (_)
I4,H6: 8.. / I4 = 8  =>  3 pairs (_) / H6 = 8  =>  1 pairs (_)
A8,A9: 8.. / A8 = 8  =>  3 pairs (_) / A9 = 8  =>  3 pairs (_)
* DURATION: 0:00:09.539546  START: 20:41:08.165556  END: 20:41:17.705102 2020-11-23
* CP COUNT: (13)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
E3,F3: 7.. / E3 = 7 ==>  5 pairs (_) / F3 = 7 ==>  3 pairs (_)
G4,I5: 2.. / G4 = 2 ==>  4 pairs (_) / I5 = 2 ==>  0 pairs (*)
* DURATION: 0:00:24.380762  START: 20:41:18.475470  END: 20:41:42.856232 2020-11-23
* REASONING G4,I5: 2..
* PRF # I5: 2 # G1: 3,5 => SOL
* STA # I5: 2 + G1: 3,5
* CNT   1 HDP CHAINS /  15 HYP OPENED
* DCP COUNT: (2)
* SOLUTION FOUND

Header Info

987;H231;GP;22;11.30;11.30;3.40

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for E3,F3: 7..:

* INC # E3: 7 # A7: 2,4 => UNS
* INC # E3: 7 # A7: 1,3,7 => UNS
* INC # E3: 7 # E1: 2,4 => UNS
* INC # E3: 7 # E2: 2,4 => UNS
* INC # E3: 7 # B7: 6,7 => UNS
* INC # E3: 7 # H7: 6,7 => UNS
* INC # E3: 7 # I7: 6,7 => UNS
* INC # E3: 7 # B8: 6,7 => UNS
* INC # E3: 7 # H8: 6,7 => UNS
* INC # E3: 7 => UNS
* INC # F3: 7 => UNS
* CNT  11 HDP CHAINS /  11 HYP OPENED

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

* INC # G4: 2 # B5: 1,9 => UNS
* INC # G4: 2 # B5: 2,3 => UNS
* INC # G4: 2 # F4: 1,9 => UNS
* INC # G4: 2 # F4: 5,8 => UNS
* INC # G4: 2 # C9: 1,9 => UNS
* INC # G4: 2 # C9: 4,6 => UNS
* INC # G4: 2 # H5: 5,9 => UNS
* INC # G4: 2 # G6: 5,9 => UNS
* INC # G4: 2 # E5: 5,9 => UNS
* INC # G4: 2 # F5: 5,9 => UNS
* INC # G4: 2 # I3: 5,9 => UNS
* INC # G4: 2 # I9: 5,9 => UNS
* INC # G4: 2 => UNS
* PRF # I5: 2 # G1: 3,5 => SOL
* STA # I5: 2 + G1: 3,5
* CNT  14 HDP CHAINS /  15 HYP OPENED