Analysis of xx-ph-00001378-397-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: ..3.5...94......3..8....1.......7.....632....71.8..........48....56...9.....3..62 initial

Autosolve

position: ..3.5...94......3..8...31.......7.....632....71.8..........48....56...9.....3..62 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

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000009

List of important HDP chains detected for D7,F8: 2..:

* DIS # D7: 2 # A8: 1,8 => CTR => A8: 2,3
* DIS # D7: 2 + A8: 2,3 # C9: 4,7 => CTR => C9: 1,8,9
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 # G1: 4,7 => CTR => G1: 2,6
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 # G5: 5,9 => CTR => G5: 4,7
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 + G5: 4,7 # I8: 1 => CTR => I8: 4,7
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 + G5: 4,7 + I8: 4,7 # B9: 4,7 => CTR => B9: 9
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 + G5: 4,7 + I8: 4,7 + B9: 9 # E2: 6,7 => CTR => E2: 8
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 + G5: 4,7 + I8: 4,7 + B9: 9 + E2: 8 => CTR => D7: 1,5,7,9
* STA D7: 1,5,7,9
* CNT   8 HDP CHAINS /  25 HYP OPENED

List of important HDP chains detected for B2,A3: 5..:

* DIS # B2: 5 # B4: 4,9 => CTR => B4: 2,3
* DIS # B2: 5 + B4: 2,3 # C4: 4,9 => CTR => C4: 2,8
* CNT   2 HDP CHAINS /  29 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...94......3..8....1.......7.....632....71.8..........48....56...9.....3..62 initial
..3.5...94......3..8...31.......7.....632....71.8..........48....56...9.....3..62 autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
A1,C2: 1.. / A1 = 1  =>  1 pairs (_) / C2 = 1  =>  1 pairs (_)
D7,F8: 2.. / D7 = 2  =>  2 pairs (_) / F8 = 2  =>  0 pairs (_)
A4,B4: 3.. / A4 = 3  =>  0 pairs (_) / B4 = 3  =>  0 pairs (_)
G6,I6: 3.. / G6 = 3  =>  1 pairs (_) / I6 = 3  =>  2 pairs (_)
G6,G8: 3.. / G6 = 3  =>  1 pairs (_) / G8 = 3  =>  2 pairs (_)
B2,A3: 5.. / B2 = 5  =>  1 pairs (_) / A3 = 5  =>  1 pairs (_)
A7,B7: 6.. / A7 = 6  =>  1 pairs (_) / B7 = 6  =>  1 pairs (_)
H1,I2: 8.. / H1 = 8  =>  0 pairs (_) / I2 = 8  =>  1 pairs (_)
F1,H1: 8.. / F1 = 8  =>  1 pairs (_) / H1 = 8  =>  0 pairs (_)
C4,C9: 8.. / C4 = 8  =>  1 pairs (_) / C9 = 8  =>  3 pairs (_)
E2,E8: 8.. / E2 = 8  =>  1 pairs (_) / E8 = 8  =>  1 pairs (_)
* DURATION: 0:00:07.952026  START: 21:42:46.397582  END: 21:42:54.349608 2020-11-27
* CP COUNT: (11)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
C4,C9: 8.. / C4 = 8 ==>  1 pairs (_) / C9 = 8 ==>  3 pairs (_)
G6,G8: 3.. / G6 = 3 ==>  1 pairs (_) / G8 = 3 ==>  2 pairs (_)
G6,I6: 3.. / G6 = 3 ==>  1 pairs (_) / I6 = 3 ==>  2 pairs (_)
D7,F8: 2.. / D7 = 2 ==>  0 pairs (X) / F8 = 2  =>  0 pairs (_)
E2,E8: 8.. / E2 = 8 ==>  1 pairs (_) / E8 = 8 ==>  1 pairs (_)
A7,B7: 6.. / A7 = 6 ==>  1 pairs (_) / B7 = 6 ==>  1 pairs (_)
B2,A3: 5.. / B2 = 5 ==>  3 pairs (_) / A3 = 5 ==>  1 pairs (_)
A1,C2: 1.. / A1 = 1 ==>  1 pairs (_) / C2 = 1 ==>  1 pairs (_)
F1,H1: 8.. / F1 = 8 ==>  1 pairs (_) / H1 = 8 ==>  0 pairs (_)
H1,I2: 8.. / H1 = 8 ==>  0 pairs (_) / I2 = 8 ==>  1 pairs (_)
A4,B4: 3.. / A4 = 3 ==>  0 pairs (_) / B4 = 3 ==>  0 pairs (_)
* DURATION: 0:01:31.004057  START: 21:42:54.350335  END: 21:44:25.354392 2020-11-27
* REASONING D7,F8: 2..
* DIS # D7: 2 # A8: 1,8 => CTR => A8: 2,3
* DIS # D7: 2 + A8: 2,3 # C9: 4,7 => CTR => C9: 1,8,9
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 # G1: 4,7 => CTR => G1: 2,6
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 # G5: 5,9 => CTR => G5: 4,7
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 + G5: 4,7 # I8: 1 => CTR => I8: 4,7
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 + G5: 4,7 + I8: 4,7 # B9: 4,7 => CTR => B9: 9
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 + G5: 4,7 + I8: 4,7 + B9: 9 # E2: 6,7 => CTR => E2: 8
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 + G5: 4,7 + I8: 4,7 + B9: 9 + E2: 8 => CTR => D7: 1,5,7,9
* STA D7: 1,5,7,9
* CNT   8 HDP CHAINS /  25 HYP OPENED
* REASONING B2,A3: 5..
* DIS # B2: 5 # B4: 4,9 => CTR => B4: 2,3
* DIS # B2: 5 + B4: 2,3 # C4: 4,9 => CTR => C4: 2,8
* CNT   2 HDP CHAINS /  29 HYP OPENED
* DCP COUNT: (11)
* CLUE FOUND

Header Info

1378;397;elev;22;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for C4,C9: 8..:

* INC # C9: 8 # A4: 5,9 => UNS
* INC # C9: 8 # B4: 5,9 => UNS
* INC # C9: 8 # A5: 5,9 => UNS
* INC # C9: 8 # F5: 5,9 => UNS
* INC # C9: 8 # G5: 5,9 => UNS
* INC # C9: 8 # B2: 5,9 => UNS
* INC # C9: 8 # B2: 2,6,7 => UNS
* INC # C9: 8 # G4: 2,5 => UNS
* INC # C9: 8 # H4: 2,5 => UNS
* INC # C9: 8 # G6: 2,5 => UNS
* INC # C9: 8 # H3: 2,5 => UNS
* INC # C9: 8 # H3: 4,7 => UNS
* INC # C9: 8 # A7: 1,9 => UNS
* INC # C9: 8 # C7: 1,9 => UNS
* INC # C9: 8 # D9: 1,9 => UNS
* INC # C9: 8 # F9: 1,9 => UNS
* INC # C9: 8 => UNS
* INC # C4: 8 # A4: 5,9 => UNS
* INC # C4: 8 # B4: 5,9 => UNS
* INC # C4: 8 # B5: 5,9 => UNS
* INC # C4: 8 # F5: 5,9 => UNS
* INC # C4: 8 # G5: 5,9 => UNS
* INC # C4: 8 # A3: 5,9 => UNS
* INC # C4: 8 # A3: 2,6 => UNS
* INC # C4: 8 => UNS
* CNT  25 HDP CHAINS /  25 HYP OPENED

Full list of HDP chains traversed for G6,G8: 3..:

* INC # G8: 3 => UNS
* INC # G6: 3 # I8: 4,7 => UNS
* INC # G6: 3 # G9: 4,7 => UNS
* INC # G6: 3 # B8: 4,7 => UNS
* INC # G6: 3 # B8: 2,3 => UNS
* INC # G6: 3 # G1: 4,7 => UNS
* INC # G6: 3 # G5: 4,7 => UNS
* INC # G6: 3 => UNS
* CNT   8 HDP CHAINS /   8 HYP OPENED

Full list of HDP chains traversed for G6,I6: 3..:

* INC # I6: 3 => UNS
* INC # G6: 3 # I8: 4,7 => UNS
* INC # G6: 3 # G9: 4,7 => UNS
* INC # G6: 3 # B8: 4,7 => UNS
* INC # G6: 3 # B8: 2,3 => UNS
* INC # G6: 3 # G1: 4,7 => UNS
* INC # G6: 3 # G5: 4,7 => UNS
* INC # G6: 3 => UNS
* CNT   8 HDP CHAINS /   8 HYP OPENED

Full list of HDP chains traversed for D7,F8: 2..:

* INC # D7: 2 # E8: 1,8 => UNS
* INC # D7: 2 # F9: 1,8 => UNS
* DIS # D7: 2 # A8: 1,8 => CTR => A8: 2,3
* INC # D7: 2 + A8: 2,3 # F1: 1,8 => UNS
* INC # D7: 2 + A8: 2,3 # F2: 1,8 => UNS
* INC # D7: 2 + A8: 2,3 # E8: 1,8 => UNS
* INC # D7: 2 + A8: 2,3 # E8: 7 => UNS
* INC # D7: 2 + A8: 2,3 # F1: 1,8 => UNS
* INC # D7: 2 + A8: 2,3 # F2: 1,8 => UNS
* INC # D7: 2 + A8: 2,3 # G8: 4,7 => UNS
* INC # D7: 2 + A8: 2,3 # I8: 4,7 => UNS
* INC # D7: 2 + A8: 2,3 # B9: 4,7 => UNS
* DIS # D7: 2 + A8: 2,3 # C9: 4,7 => CTR => C9: 1,8,9
* INC # D7: 2 + A8: 2,3 + C9: 1,8,9 # B9: 4,7 => UNS
* INC # D7: 2 + A8: 2,3 + C9: 1,8,9 # B9: 9 => UNS
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 # G1: 4,7 => CTR => G1: 2,6
* INC # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 # G5: 4,7 => UNS
* INC # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 # G5: 4,7 => UNS
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 # G5: 5,9 => CTR => G5: 4,7
* INC # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 + G5: 4,7 # I8: 4,7 => UNS
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 + G5: 4,7 # I8: 1 => CTR => I8: 4,7
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 + G5: 4,7 + I8: 4,7 # B9: 4,7 => CTR => B9: 9
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 + G5: 4,7 + I8: 4,7 + B9: 9 # E2: 6,7 => CTR => E2: 8
* DIS # D7: 2 + A8: 2,3 + C9: 1,8,9 + G1: 2,6 + G5: 4,7 + I8: 4,7 + B9: 9 + E2: 8 => CTR => D7: 1,5,7,9
* INC D7: 1,5,7,9 # F8: 2 => UNS
* STA D7: 1,5,7,9
* CNT  25 HDP CHAINS /  25 HYP OPENED

Full list of HDP chains traversed for E2,E8: 8..:

* INC # E2: 8 # D7: 1,7 => UNS
* INC # E2: 8 # E7: 1,7 => UNS
* INC # E2: 8 # D9: 1,7 => UNS
* INC # E2: 8 # I8: 1,7 => UNS
* INC # E2: 8 # I8: 3,4 => UNS
* INC # E2: 8 => UNS
* INC # E8: 8 # D7: 1,2 => UNS
* INC # E8: 8 # D7: 5,7,9 => UNS
* INC # E8: 8 # A8: 1,2 => UNS
* INC # E8: 8 # A8: 3 => UNS
* INC # E8: 8 # F1: 1,2 => UNS
* INC # E8: 8 # F2: 1,2 => UNS
* INC # E8: 8 => UNS
* CNT  13 HDP CHAINS /  13 HYP OPENED

Full list of HDP chains traversed for A7,B7: 6..:

* INC # A7: 6 # C2: 1,2 => UNS
* INC # A7: 6 # C2: 7,9 => UNS
* INC # A7: 6 # D1: 1,2 => UNS
* INC # A7: 6 # F1: 1,2 => UNS
* INC # A7: 6 # A8: 1,2 => UNS
* INC # A7: 6 # A8: 3,8 => UNS
* INC # A7: 6 => UNS
* INC # B7: 6 # B2: 2,7 => UNS
* INC # B7: 6 # C2: 2,7 => UNS
* INC # B7: 6 # C3: 2,7 => UNS
* INC # B7: 6 # D1: 2,7 => UNS
* INC # B7: 6 # G1: 2,7 => UNS
* INC # B7: 6 # H1: 2,7 => UNS
* INC # B7: 6 # B8: 2,7 => UNS
* INC # B7: 6 # B8: 3,4 => UNS
* INC # B7: 6 => UNS
* CNT  16 HDP CHAINS /  16 HYP OPENED

Full list of HDP chains traversed for B2,A3: 5..:

* DIS # B2: 5 # B4: 4,9 => CTR => B4: 2,3
* DIS # B2: 5 + B4: 2,3 # C4: 4,9 => CTR => C4: 2,8
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # C6: 4,9 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # C6: 4,9 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # C6: 2 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # G5: 4,9 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # G5: 5,7 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # B9: 4,9 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # B9: 7 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # A4: 2,3 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # A4: 5,8,9 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # B7: 2,3 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # B8: 2,3 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # A4: 2,8 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # A4: 3,5,9 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # H4: 2,8 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # H4: 1,4,5 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # C6: 4,9 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # C6: 2 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # G5: 4,9 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # G5: 5,7 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # B9: 4,9 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 # B9: 7 => UNS
* INC # B2: 5 + B4: 2,3 + C4: 2,8 => UNS
* INC # A3: 5 # A4: 8,9 => UNS
* INC # A3: 5 # C4: 8,9 => UNS
* INC # A3: 5 # A9: 8,9 => UNS
* INC # A3: 5 # A9: 1 => UNS
* INC # A3: 5 => UNS
* CNT  29 HDP CHAINS /  29 HYP OPENED

Full list of HDP chains traversed for A1,C2: 1..:

* INC # A1: 1 # C9: 8,9 => UNS
* INC # A1: 1 # C9: 1,4,7 => UNS
* INC # A1: 1 # F9: 8,9 => UNS
* INC # A1: 1 # F9: 1,5 => UNS
* INC # A1: 1 # A4: 8,9 => UNS
* INC # A1: 1 # A5: 8,9 => UNS
* INC # A1: 1 => UNS
* INC # C2: 1 # B1: 2,6 => UNS
* INC # C2: 1 # B2: 2,6 => UNS
* INC # C2: 1 # A3: 2,6 => UNS
* INC # C2: 1 # F1: 2,6 => UNS
* INC # C2: 1 # G1: 2,6 => UNS
* INC # C2: 1 # A7: 2,6 => UNS
* INC # C2: 1 # A7: 1,3,9 => UNS
* INC # C2: 1 => UNS
* CNT  15 HDP CHAINS /  15 HYP OPENED

Full list of HDP chains traversed for F1,H1: 8..:

* INC # F1: 8 # D7: 1,2 => UNS
* INC # F1: 8 # D7: 5,7,9 => UNS
* INC # F1: 8 # A8: 1,2 => UNS
* INC # F1: 8 # A8: 3 => UNS
* INC # F1: 8 # F2: 1,2 => UNS
* INC # F1: 8 # F2: 6,9 => UNS
* INC # F1: 8 => UNS
* INC # H1: 8 => UNS
* CNT   8 HDP CHAINS /   8 HYP OPENED

Full list of HDP chains traversed for H1,I2: 8..:

* INC # I2: 8 # D7: 1,2 => UNS
* INC # I2: 8 # D7: 5,7,9 => UNS
* INC # I2: 8 # A8: 1,2 => UNS
* INC # I2: 8 # A8: 3 => UNS
* INC # I2: 8 # F2: 1,2 => UNS
* INC # I2: 8 # F2: 6,9 => UNS
* INC # I2: 8 => UNS
* INC # H1: 8 => UNS
* CNT   8 HDP CHAINS /   8 HYP OPENED

Full list of HDP chains traversed for A4,B4: 3..:

* INC # A4: 3 => UNS
* INC # B4: 3 => UNS
* CNT   2 HDP CHAINS /   2 HYP OPENED