Analysis of xx-ph-00000926-L62-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: ..3.5.7.......9...8..2....5.15...4...3..7..5.9.......6...6.......1..8..2.4..1.3.. initial

Autosolve

position: ..3.5.7.......9...8..2....5.15...4...3..7..5.9.......6...6.......1..8..2.4..1.3.. 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

Time used: 0:00:00.000012

List of important HDP chains detected for A2,B2: 5..:

* DIS # A2: 5 # H1: 4,8 => CTR => H1: 2,6,9
* DIS # A2: 5 + H1: 2,6,9 # D6: 4,8 => CTR => D6: 1,3,5
* DIS # A2: 5 + H1: 2,6,9 + D6: 1,3,5 # E2: 3,6 => CTR => E2: 4,8
* DIS # A2: 5 + H1: 2,6,9 + D6: 1,3,5 + E2: 4,8 # E7: 4,9 => CTR => E7: 2
* DIS # A2: 5 + H1: 2,6,9 + D6: 1,3,5 + E2: 4,8 + E7: 2 => CTR => A2: 1,2,4,6,7
* STA A2: 1,2,4,6,7
* CNT   5 HDP CHAINS /  12 HYP OPENED

List of important HDP chains detected for A1,A2: 1..:

* DIS # A1: 1 # D6: 4,8 => CTR => D6: 1,3,5
* CNT   1 HDP CHAINS /  42 HYP OPENED

List of important HDP chains detected for D2,F3: 7..:

* DIS # F3: 7 # H3: 6,9 => CTR => H3: 1,3,4
* CNT   1 HDP CHAINS /  36 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

..3.5.7.......9...8..2....5.15...4...3..7..5.9.......6...6.......1..8..2.4..1.3.. initial
..3.5.7.......9...8..2....5.15...4...3..7..5.9.......6...6.......1..8..2.4..1.3.. autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
A1,A2: 1.. / A1 = 1  =>  5 pairs (_) / A2 = 1  =>  0 pairs (_)
A7,A8: 3.. / A7 = 3  =>  0 pairs (_) / A8 = 3  =>  1 pairs (_)
I2,I4: 3.. / I2 = 3  =>  0 pairs (_) / I4 = 3  =>  2 pairs (_)
A2,B2: 5.. / A2 = 5  =>  5 pairs (_) / B2 = 5  =>  0 pairs (_)
D6,F6: 5.. / D6 = 5  =>  1 pairs (_) / F6 = 5  =>  1 pairs (_)
G7,G8: 5.. / G7 = 5  =>  1 pairs (_) / G8 = 5  =>  0 pairs (_)
D2,F3: 7.. / D2 = 7  =>  1 pairs (_) / F3 = 7  =>  2 pairs (_)
B6,B7: 8.. / B6 = 8  =>  1 pairs (_) / B7 = 8  =>  1 pairs (_)
* DURATION: 0:00:05.669338  START: 08:02:43.614164  END: 08:02:49.283502 2020-11-23
* CP COUNT: (8)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
A2,B2: 5.. / A2 = 5 ==>  0 pairs (X) / B2 = 5  =>  0 pairs (_)
A1,A2: 1.. / A1 = 1 ==>  5 pairs (_) / A2 = 1 ==>  0 pairs (_)
D2,F3: 7.. / D2 = 7 ==>  1 pairs (_) / F3 = 7 ==>  2 pairs (_)
I2,I4: 3.. / I2 = 3 ==>  0 pairs (_) / I4 = 3 ==>  2 pairs (_)
B6,B7: 8.. / B6 = 8 ==>  1 pairs (_) / B7 = 8 ==>  1 pairs (_)
D6,F6: 5.. / D6 = 5 ==>  1 pairs (_) / F6 = 5 ==>  1 pairs (_)
G7,G8: 5.. / G7 = 5 ==>  1 pairs (_) / G8 = 5 ==>  0 pairs (_)
A7,A8: 3.. / A7 = 3 ==>  0 pairs (_) / A8 = 3 ==>  1 pairs (_)
* DURATION: 0:01:17.164598  START: 08:02:49.284321  END: 08:04:06.448919 2020-11-23
* REASONING A2,B2: 5..
* DIS # A2: 5 # H1: 4,8 => CTR => H1: 2,6,9
* DIS # A2: 5 + H1: 2,6,9 # D6: 4,8 => CTR => D6: 1,3,5
* DIS # A2: 5 + H1: 2,6,9 + D6: 1,3,5 # E2: 3,6 => CTR => E2: 4,8
* DIS # A2: 5 + H1: 2,6,9 + D6: 1,3,5 + E2: 4,8 # E7: 4,9 => CTR => E7: 2
* DIS # A2: 5 + H1: 2,6,9 + D6: 1,3,5 + E2: 4,8 + E7: 2 => CTR => A2: 1,2,4,6,7
* STA A2: 1,2,4,6,7
* CNT   5 HDP CHAINS /  12 HYP OPENED
* REASONING A1,A2: 1..
* DIS # A1: 1 # D6: 4,8 => CTR => D6: 1,3,5
* CNT   1 HDP CHAINS /  42 HYP OPENED
* REASONING D2,F3: 7..
* DIS # F3: 7 # H3: 6,9 => CTR => H3: 1,3,4
* CNT   1 HDP CHAINS /  36 HYP OPENED
* DCP COUNT: (8)
* CLUE FOUND

Header Info

926;L62;elev;22;11.30;11.30;7.90

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for A2,B2: 5..:

* INC # A2: 5 # E2: 4,8 => UNS
* INC # A2: 5 # E2: 3,6 => UNS
* DIS # A2: 5 # H1: 4,8 => CTR => H1: 2,6,9
* INC # A2: 5 + H1: 2,6,9 # I1: 4,8 => UNS
* INC # A2: 5 + H1: 2,6,9 # I1: 4,8 => UNS
* INC # A2: 5 + H1: 2,6,9 # I1: 9 => UNS
* DIS # A2: 5 + H1: 2,6,9 # D6: 4,8 => CTR => D6: 1,3,5
* INC # A2: 5 + H1: 2,6,9 + D6: 1,3,5 # E2: 4,8 => UNS
* DIS # A2: 5 + H1: 2,6,9 + D6: 1,3,5 # E2: 3,6 => CTR => E2: 4,8
* DIS # A2: 5 + H1: 2,6,9 + D6: 1,3,5 + E2: 4,8 # E7: 4,9 => CTR => E7: 2
* DIS # A2: 5 + H1: 2,6,9 + D6: 1,3,5 + E2: 4,8 + E7: 2 => CTR => A2: 1,2,4,6,7
* INC A2: 1,2,4,6,7 # B2: 5 => UNS
* STA A2: 1,2,4,6,7
* CNT  12 HDP CHAINS /  12 HYP OPENED

Full list of HDP chains traversed for A1,A2: 1..:

* INC # A1: 1 # E2: 4,8 => UNS
* INC # A1: 1 # E2: 3,6 => UNS
* INC # A1: 1 # H1: 4,8 => UNS
* INC # A1: 1 # I1: 4,8 => UNS
* INC # A1: 1 # D5: 4,8 => UNS
* DIS # A1: 1 # D6: 4,8 => CTR => D6: 1,3,5
* INC # A1: 1 + D6: 1,3,5 # D5: 4,8 => UNS
* INC # A1: 1 + D6: 1,3,5 # D5: 1,9 => UNS
* INC # A1: 1 + D6: 1,3,5 # E2: 4,8 => UNS
* INC # A1: 1 + D6: 1,3,5 # E2: 3,6 => UNS
* INC # A1: 1 + D6: 1,3,5 # H1: 4,8 => UNS
* INC # A1: 1 + D6: 1,3,5 # I1: 4,8 => UNS
* INC # A1: 1 + D6: 1,3,5 # D5: 4,8 => UNS
* INC # A1: 1 + D6: 1,3,5 # D5: 1,9 => UNS
* INC # A1: 1 + D6: 1,3,5 # E2: 4,6 => UNS
* INC # A1: 1 + D6: 1,3,5 # E3: 4,6 => UNS
* INC # A1: 1 + D6: 1,3,5 # H1: 4,6 => UNS
* INC # A1: 1 + D6: 1,3,5 # H1: 2,8,9 => UNS
* INC # A1: 1 + D6: 1,3,5 # F5: 4,6 => UNS
* INC # A1: 1 + D6: 1,3,5 # F5: 1,2 => UNS
* INC # A1: 1 + D6: 1,3,5 # E7: 4,9 => UNS
* INC # A1: 1 + D6: 1,3,5 # D8: 4,9 => UNS
* INC # A1: 1 + D6: 1,3,5 # H8: 4,9 => UNS
* INC # A1: 1 + D6: 1,3,5 # H8: 6,7 => UNS
* INC # A1: 1 + D6: 1,3,5 # E2: 4,8 => UNS
* INC # A1: 1 + D6: 1,3,5 # E2: 3,6 => UNS
* INC # A1: 1 + D6: 1,3,5 # H1: 4,8 => UNS
* INC # A1: 1 + D6: 1,3,5 # I1: 4,8 => UNS
* INC # A1: 1 + D6: 1,3,5 # D5: 4,8 => UNS
* INC # A1: 1 + D6: 1,3,5 # D5: 1,9 => UNS
* INC # A1: 1 + D6: 1,3,5 # E2: 4,6 => UNS
* INC # A1: 1 + D6: 1,3,5 # E3: 4,6 => UNS
* INC # A1: 1 + D6: 1,3,5 # H1: 4,6 => UNS
* INC # A1: 1 + D6: 1,3,5 # H1: 2,8,9 => UNS
* INC # A1: 1 + D6: 1,3,5 # F5: 4,6 => UNS
* INC # A1: 1 + D6: 1,3,5 # F5: 1,2 => UNS
* INC # A1: 1 + D6: 1,3,5 # E7: 4,9 => UNS
* INC # A1: 1 + D6: 1,3,5 # D8: 4,9 => UNS
* INC # A1: 1 + D6: 1,3,5 # H8: 4,9 => UNS
* INC # A1: 1 + D6: 1,3,5 # H8: 6,7 => UNS
* INC # A1: 1 + D6: 1,3,5 => UNS
* INC # A2: 1 => UNS
* CNT  42 HDP CHAINS /  42 HYP OPENED

Full list of HDP chains traversed for D2,F3: 7..:

* INC # F3: 7 # B1: 6,9 => UNS
* INC # F3: 7 # C3: 6,9 => UNS
* INC # F3: 7 # G3: 6,9 => UNS
* DIS # F3: 7 # H3: 6,9 => CTR => H3: 1,3,4
* INC # F3: 7 + H3: 1,3,4 # G3: 6,9 => UNS
* INC # F3: 7 + H3: 1,3,4 # G3: 1 => UNS
* INC # F3: 7 + H3: 1,3,4 # B8: 6,9 => UNS
* INC # F3: 7 + H3: 1,3,4 # B8: 5,7 => UNS
* INC # F3: 7 + H3: 1,3,4 # B1: 6,9 => UNS
* INC # F3: 7 + H3: 1,3,4 # C3: 6,9 => UNS
* INC # F3: 7 + H3: 1,3,4 # G3: 6,9 => UNS
* INC # F3: 7 + H3: 1,3,4 # G3: 1 => UNS
* INC # F3: 7 + H3: 1,3,4 # B8: 6,9 => UNS
* INC # F3: 7 + H3: 1,3,4 # B8: 5,7 => UNS
* INC # F3: 7 + H3: 1,3,4 # F7: 2,5 => UNS
* INC # F3: 7 + H3: 1,3,4 # F7: 3,4 => UNS
* INC # F3: 7 + H3: 1,3,4 # A9: 2,5 => UNS
* INC # F3: 7 + H3: 1,3,4 # A9: 6,7 => UNS
* INC # F3: 7 + H3: 1,3,4 # F6: 2,5 => UNS
* INC # F3: 7 + H3: 1,3,4 # F6: 1,3,4 => UNS
* INC # F3: 7 + H3: 1,3,4 # B1: 6,9 => UNS
* INC # F3: 7 + H3: 1,3,4 # C3: 6,9 => UNS
* INC # F3: 7 + H3: 1,3,4 # G3: 6,9 => UNS
* INC # F3: 7 + H3: 1,3,4 # G3: 1 => UNS
* INC # F3: 7 + H3: 1,3,4 # B8: 6,9 => UNS
* INC # F3: 7 + H3: 1,3,4 # B8: 5,7 => UNS
* INC # F3: 7 + H3: 1,3,4 # F7: 2,5 => UNS
* INC # F3: 7 + H3: 1,3,4 # F7: 3,4 => UNS
* INC # F3: 7 + H3: 1,3,4 # A9: 2,5 => UNS
* INC # F3: 7 + H3: 1,3,4 # A9: 6,7 => UNS
* INC # F3: 7 + H3: 1,3,4 # F6: 2,5 => UNS
* INC # F3: 7 + H3: 1,3,4 # F6: 1,3,4 => UNS
* INC # F3: 7 + H3: 1,3,4 => UNS
* INC # D2: 7 # D8: 5,9 => UNS
* INC # D2: 7 # D8: 3,4 => UNS
* INC # D2: 7 => UNS
* CNT  36 HDP CHAINS /  36 HYP OPENED

Full list of HDP chains traversed for I2,I4: 3..:

* INC # I4: 3 # E4: 8,9 => UNS
* INC # I4: 3 # D5: 8,9 => UNS
* INC # I4: 3 # H4: 8,9 => UNS
* INC # I4: 3 # H4: 2,7 => UNS
* INC # I4: 3 # E4: 2,6 => UNS
* INC # I4: 3 # F5: 2,6 => UNS
* INC # I4: 3 # A4: 2,6 => UNS
* INC # I4: 3 # A4: 7 => UNS
* INC # I4: 3 => UNS
* INC # I2: 3 => UNS
* CNT  10 HDP CHAINS /  10 HYP OPENED

Full list of HDP chains traversed for B6,B7: 8..:

* INC # B6: 8 # G5: 1,2 => UNS
* INC # B6: 8 # H6: 1,2 => UNS
* INC # B6: 8 # F6: 1,2 => UNS
* INC # B6: 8 # F6: 3,4,5 => UNS
* INC # B6: 8 # G2: 1,2 => UNS
* INC # B6: 8 # G2: 6,8 => UNS
* INC # B6: 8 => UNS
* INC # B7: 8 # A4: 2,7 => UNS
* INC # B7: 8 # C6: 2,7 => UNS
* INC # B7: 8 # H6: 2,7 => UNS
* INC # B7: 8 # H6: 1,3,8 => UNS
* INC # B7: 8 # B2: 2,7 => UNS
* INC # B7: 8 # B2: 5,6 => UNS
* INC # B7: 8 => UNS
* CNT  14 HDP CHAINS /  14 HYP OPENED

Full list of HDP chains traversed for D6,F6: 5..:

* INC # D6: 5 # D8: 7,9 => UNS
* INC # D6: 5 # D8: 3,4 => UNS
* INC # D6: 5 # C9: 7,9 => UNS
* INC # D6: 5 # H9: 7,9 => UNS
* INC # D6: 5 # I9: 7,9 => UNS
* INC # D6: 5 => UNS
* INC # F6: 5 # F7: 2,7 => UNS
* INC # F6: 5 # F7: 3,4 => UNS
* INC # F6: 5 # A9: 2,7 => UNS
* INC # F6: 5 # C9: 2,7 => UNS
* INC # F6: 5 => UNS
* CNT  11 HDP CHAINS /  11 HYP OPENED

Full list of HDP chains traversed for G7,G8: 5..:

* INC # G7: 5 # H8: 6,9 => UNS
* INC # G7: 5 # H9: 6,9 => UNS
* INC # G7: 5 # B8: 6,9 => UNS
* INC # G7: 5 # B8: 5,7 => UNS
* INC # G7: 5 # G3: 6,9 => UNS
* INC # G7: 5 # G3: 1 => UNS
* INC # G7: 5 => UNS
* INC # G8: 5 => UNS
* CNT   8 HDP CHAINS /   8 HYP OPENED

Full list of HDP chains traversed for A7,A8: 3..:

* INC # A8: 3 # E7: 4,9 => UNS
* INC # A8: 3 # D8: 4,9 => UNS
* INC # A8: 3 # H8: 4,9 => UNS
* INC # A8: 3 # H8: 6,7 => UNS
* INC # A8: 3 => UNS
* INC # A7: 3 => UNS
* CNT   6 HDP CHAINS /   6 HYP OPENED