Analysis of xx-ph-00014416-kz1a-base.sdk

Contents

Original Sudoku

level: very deep

Original Sudoku

position: 98.7.....6...8.7....7..5...4......3...86..5......32..4.1.....2...68..9.......1.6. initial

Autosolve

position: 98.7.....6...8.7....7..5...4....8.3...86..5......32..4.1.....2...68..9.......1.6. 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

Time used: 0:00:00.000008

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

Very Deep Constraint Pair Analysis

Very Deep Constraint Pair Analysis

Time used: 0:01:11.740205

List of important HDP chains detected for E5,F5: 4..:

* DIS # F5: 4 # G1: 3,6 # D2: 3,9 => CTR => D2: 1,2,4
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 # D3: 3,9 => CTR => D3: 1,2,4
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 # I2: 3,9 => CTR => I2: 1,2,5
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 # I3: 6,9 => CTR => I3: 1,2,3,8
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # E4: 1,5 => CTR => E4: 7,9
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 # A3: 2,3 => CTR => A3: 1
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 # B8: 2,3 => CTR => B8: 4
* PRF # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 + B8: 4 # E7: 6,9 => SOL
* STA # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 + B8: 4 + E7: 6,9
* CNT   8 HDP CHAINS /  47 HYP OPENED

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

Details

This sudoku is very deep. Here is some information that may be helpful on how to proceed.

Positions

98.7.....6...8.7....7..5...4......3...86..5......32..4.1.....2...68..9.......1.6. initial
98.7.....6...8.7....7..5...4....8.3...86..5......32..4.1.....2...68..9.......1.6. autosolve

Classification

level: very deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
H8,I8: 1.. / H8 = 1  =>  2 pairs (_) / I8 = 1  =>  0 pairs (_)
A5,B5: 3.. / A5 = 3  =>  1 pairs (_) / B5 = 3  =>  1 pairs (_)
E5,F5: 4.. / E5 = 4  =>  1 pairs (_) / F5 = 4  =>  3 pairs (_)
B4,B6: 6.. / B4 = 6  =>  1 pairs (_) / B6 = 6  =>  1 pairs (_)
E7,F7: 6.. / E7 = 6  =>  0 pairs (_) / F7 = 6  =>  1 pairs (_)
B6,G6: 6.. / B6 = 6  =>  1 pairs (_) / G6 = 6  =>  1 pairs (_)
F1,F7: 6.. / F1 = 6  =>  0 pairs (_) / F7 = 6  =>  1 pairs (_)
G6,H6: 8.. / G6 = 8  =>  2 pairs (_) / H6 = 8  =>  1 pairs (_)
A7,A9: 8.. / A7 = 8  =>  1 pairs (_) / A9 = 8  =>  1 pairs (_)
H3,H6: 8.. / H3 = 8  =>  2 pairs (_) / H6 = 8  =>  1 pairs (_)
* DURATION: 0:00:06.806682  START: 02:40:06.265216  END: 02:40:13.071898 2020-12-03
* CP COUNT: (10)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
E5,F5: 4.. / E5 = 4 ==>  1 pairs (_) / F5 = 4 ==>  3 pairs (_)
H3,H6: 8.. / H3 = 8 ==>  2 pairs (_) / H6 = 8 ==>  1 pairs (_)
G6,H6: 8.. / G6 = 8 ==>  2 pairs (_) / H6 = 8 ==>  1 pairs (_)
H8,I8: 1.. / H8 = 1 ==>  2 pairs (_) / I8 = 1 ==>  0 pairs (_)
A7,A9: 8.. / A7 = 8 ==>  1 pairs (_) / A9 = 8 ==>  1 pairs (_)
B6,G6: 6.. / B6 = 6 ==>  1 pairs (_) / G6 = 6 ==>  1 pairs (_)
B4,B6: 6.. / B4 = 6 ==>  1 pairs (_) / B6 = 6 ==>  1 pairs (_)
A5,B5: 3.. / A5 = 3 ==>  1 pairs (_) / B5 = 3 ==>  1 pairs (_)
F1,F7: 6.. / F1 = 6 ==>  0 pairs (_) / F7 = 6 ==>  1 pairs (_)
E7,F7: 6.. / E7 = 6 ==>  0 pairs (_) / F7 = 6 ==>  1 pairs (_)
* DURATION: 0:01:07.520931  START: 02:40:13.072595  END: 02:41:20.593526 2020-12-03
* DCP COUNT: (10)
* INCONCLUSIVE

--------------------------------------------------
* VERY DEEP CONSTRAINT PAIRS (PAIR REDUCTION, RECURSIVE)
E5,F5: 4.. / E5 = 4  =>  0 pairs (X) / F5 = 4 ==>  0 pairs (*)
* DURATION: 0:01:11.737738  START: 02:41:20.705368  END: 02:42:32.443106 2020-12-03
* REASONING E5,F5: 4..
* DIS # F5: 4 # G1: 3,6 # D2: 3,9 => CTR => D2: 1,2,4
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 # D3: 3,9 => CTR => D3: 1,2,4
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 # I2: 3,9 => CTR => I2: 1,2,5
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 # I3: 6,9 => CTR => I3: 1,2,3,8
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # E4: 1,5 => CTR => E4: 7,9
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 # A3: 2,3 => CTR => A3: 1
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 # B8: 2,3 => CTR => B8: 4
* PRF # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 + B8: 4 # E7: 6,9 => SOL
* STA # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 + B8: 4 + E7: 6,9
* CNT   8 HDP CHAINS /  47 HYP OPENED
* VDCP COUNT: (1)
* SOLUTION FOUND

Header Info

14416;kz1a;GP;23;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for E5,F5: 4..:

* INC # F5: 4 # G1: 3,6 => UNS
* INC # F5: 4 # I1: 3,6 => UNS
* INC # F5: 4 # F7: 3,6 => UNS
* INC # F5: 4 # F7: 7,9 => UNS
* INC # F5: 4 # D2: 3,9 => UNS
* INC # F5: 4 # D3: 3,9 => UNS
* INC # F5: 4 # I2: 3,9 => UNS
* INC # F5: 4 # I2: 1,2,5 => UNS
* INC # F5: 4 # F7: 3,9 => UNS
* INC # F5: 4 # F7: 6,7 => UNS
* INC # F5: 4 # F7: 3,7 => UNS
* INC # F5: 4 # F7: 6,9 => UNS
* INC # F5: 4 # A8: 3,7 => UNS
* INC # F5: 4 # B8: 3,7 => UNS
* INC # F5: 4 # I8: 3,7 => UNS
* INC # F5: 4 => UNS
* INC # E5: 4 # E4: 7,9 => UNS
* INC # E5: 4 # E4: 1,5 => UNS
* INC # E5: 4 # B5: 7,9 => UNS
* INC # E5: 4 # H5: 7,9 => UNS
* INC # E5: 4 # I5: 7,9 => UNS
* INC # E5: 4 # F7: 7,9 => UNS
* INC # E5: 4 # F7: 3,4,6 => UNS
* INC # E5: 4 => UNS
* CNT  24 HDP CHAINS /  24 HYP OPENED

Full list of HDP chains traversed for H3,H6: 8..:

* INC # H3: 8 # C7: 3,4 => UNS
* INC # H3: 8 # D7: 3,4 => UNS
* INC # H3: 8 # F7: 3,4 => UNS
* INC # H3: 8 # B9: 3,4 => UNS
* INC # H3: 8 # C9: 3,4 => UNS
* INC # H3: 8 # D9: 3,4 => UNS
* INC # H3: 8 => UNS
* INC # H6: 8 # G4: 1,6 => UNS
* INC # H6: 8 # I4: 1,6 => UNS
* INC # H6: 8 # G1: 1,6 => UNS
* INC # H6: 8 # G3: 1,6 => UNS
* INC # H6: 8 => UNS
* CNT  12 HDP CHAINS /  12 HYP OPENED

Full list of HDP chains traversed for G6,H6: 8..:

* INC # G6: 8 # C7: 3,4 => UNS
* INC # G6: 8 # D7: 3,4 => UNS
* INC # G6: 8 # F7: 3,4 => UNS
* INC # G6: 8 # B9: 3,4 => UNS
* INC # G6: 8 # C9: 3,4 => UNS
* INC # G6: 8 # D9: 3,4 => UNS
* INC # G6: 8 => UNS
* INC # H6: 8 # G4: 1,6 => UNS
* INC # H6: 8 # I4: 1,6 => UNS
* INC # H6: 8 # G1: 1,6 => UNS
* INC # H6: 8 # G3: 1,6 => UNS
* INC # H6: 8 => UNS
* CNT  12 HDP CHAINS /  12 HYP OPENED

Full list of HDP chains traversed for H8,I8: 1..:

* INC # H8: 1 # H2: 4,5 => UNS
* INC # H8: 1 # H2: 9 => UNS
* INC # H8: 1 # C1: 4,5 => UNS
* INC # H8: 1 # C1: 1,2,3 => UNS
* INC # H8: 1 # H6: 7,9 => UNS
* INC # H8: 1 # H6: 8 => UNS
* INC # H8: 1 # B5: 7,9 => UNS
* INC # H8: 1 # E5: 7,9 => UNS
* INC # H8: 1 # F5: 7,9 => UNS
* INC # H8: 1 => UNS
* INC # I8: 1 => UNS
* CNT  11 HDP CHAINS /  11 HYP OPENED

Full list of HDP chains traversed for A7,A9: 8..:

* INC # A7: 8 # G9: 3,4 => UNS
* INC # A7: 8 # G9: 8 => UNS
* INC # A7: 8 # C7: 3,4 => UNS
* INC # A7: 8 # D7: 3,4 => UNS
* INC # A7: 8 # F7: 3,4 => UNS
* INC # A7: 8 # G1: 3,4 => UNS
* INC # A7: 8 # G3: 3,4 => UNS
* INC # A7: 8 => UNS
* INC # A9: 8 # G7: 3,4 => UNS
* INC # A9: 8 # G7: 8 => UNS
* INC # A9: 8 # B9: 3,4 => UNS
* INC # A9: 8 # C9: 3,4 => UNS
* INC # A9: 8 # D9: 3,4 => UNS
* INC # A9: 8 # G1: 3,4 => UNS
* INC # A9: 8 # G3: 3,4 => UNS
* INC # A9: 8 => UNS
* CNT  16 HDP CHAINS /  16 HYP OPENED

Full list of HDP chains traversed for B6,G6: 6..:

* INC # B6: 6 # H6: 1,8 => UNS
* INC # B6: 6 # H6: 7,9 => UNS
* INC # B6: 6 # G3: 1,8 => UNS
* INC # B6: 6 # G3: 2,3,4,6 => UNS
* INC # B6: 6 => UNS
* INC # G6: 6 # I4: 1,2 => UNS
* INC # G6: 6 # I5: 1,2 => UNS
* INC # G6: 6 # C4: 1,2 => UNS
* INC # G6: 6 # C4: 5,9 => UNS
* INC # G6: 6 # G1: 1,2 => UNS
* INC # G6: 6 # G3: 1,2 => UNS
* INC # G6: 6 => UNS
* CNT  12 HDP CHAINS /  12 HYP OPENED

Full list of HDP chains traversed for B4,B6: 6..:

* INC # B4: 6 # I4: 1,2 => UNS
* INC # B4: 6 # I5: 1,2 => UNS
* INC # B4: 6 # C4: 1,2 => UNS
* INC # B4: 6 # C4: 5,9 => UNS
* INC # B4: 6 # G1: 1,2 => UNS
* INC # B4: 6 # G3: 1,2 => UNS
* INC # B4: 6 => UNS
* INC # B6: 6 # H6: 1,8 => UNS
* INC # B6: 6 # H6: 7,9 => UNS
* INC # B6: 6 # G3: 1,8 => UNS
* INC # B6: 6 # G3: 2,3,4,6 => UNS
* INC # B6: 6 => UNS
* CNT  12 HDP CHAINS /  12 HYP OPENED

Full list of HDP chains traversed for A5,B5: 3..:

* INC # A5: 3 # C1: 1,2 => UNS
* INC # A5: 3 # C2: 1,2 => UNS
* INC # A5: 3 # D3: 1,2 => UNS
* INC # A5: 3 # E3: 1,2 => UNS
* INC # A5: 3 # G3: 1,2 => UNS
* INC # A5: 3 # I3: 1,2 => UNS
* INC # A5: 3 => UNS
* INC # B5: 3 # C1: 2,4 => UNS
* INC # B5: 3 # B2: 2,4 => UNS
* INC # B5: 3 # C2: 2,4 => UNS
* INC # B5: 3 # D3: 2,4 => UNS
* INC # B5: 3 # E3: 2,4 => UNS
* INC # B5: 3 # G3: 2,4 => UNS
* INC # B5: 3 # B8: 2,4 => UNS
* INC # B5: 3 # B9: 2,4 => UNS
* INC # B5: 3 => UNS
* CNT  16 HDP CHAINS /  16 HYP OPENED

Full list of HDP chains traversed for F1,F7: 6..:

* INC # F7: 6 # D2: 3,4 => UNS
* INC # F7: 6 # F2: 3,4 => UNS
* INC # F7: 6 # D3: 3,4 => UNS
* INC # F7: 6 # C1: 3,4 => UNS
* INC # F7: 6 # G1: 3,4 => UNS
* INC # F7: 6 # F8: 3,4 => UNS
* INC # F7: 6 # F8: 7 => UNS
* INC # F7: 6 => UNS
* INC # F1: 6 => UNS
* CNT   9 HDP CHAINS /   9 HYP OPENED

Full list of HDP chains traversed for E7,F7: 6..:

* INC # F7: 6 # D2: 3,4 => UNS
* INC # F7: 6 # F2: 3,4 => UNS
* INC # F7: 6 # D3: 3,4 => UNS
* INC # F7: 6 # C1: 3,4 => UNS
* INC # F7: 6 # G1: 3,4 => UNS
* INC # F7: 6 # F8: 3,4 => UNS
* INC # F7: 6 # F8: 7 => UNS
* INC # F7: 6 => UNS
* INC # E7: 6 => UNS
* CNT   9 HDP CHAINS /   9 HYP OPENED

A2. Very Deep Constraint Pair Analysis

Full list of HDP chains traversed for E5,F5: 4..:

* INC # F5: 4 # G1: 3,6 => UNS
* INC # F5: 4 # I1: 3,6 => UNS
* INC # F5: 4 # F7: 3,6 => UNS
* INC # F5: 4 # F7: 7,9 => UNS
* INC # F5: 4 # D2: 3,9 => UNS
* INC # F5: 4 # D3: 3,9 => UNS
* INC # F5: 4 # I2: 3,9 => UNS
* INC # F5: 4 # I2: 1,2,5 => UNS
* INC # F5: 4 # F7: 3,9 => UNS
* INC # F5: 4 # F7: 6,7 => UNS
* INC # F5: 4 # F7: 3,7 => UNS
* INC # F5: 4 # F7: 6,9 => UNS
* INC # F5: 4 # A8: 3,7 => UNS
* INC # F5: 4 # B8: 3,7 => UNS
* INC # F5: 4 # I8: 3,7 => UNS
* INC # F5: 4 # G1: 3,6 # F7: 3,6 => UNS
* INC # F5: 4 # G1: 3,6 # F7: 7,9 => UNS
* DIS # F5: 4 # G1: 3,6 # D2: 3,9 => CTR => D2: 1,2,4
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 # D3: 3,9 => CTR => D3: 1,2,4
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 # I2: 3,9 => CTR => I2: 1,2,5
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 # G3: 3,6 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 # I3: 3,6 => UNS
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 # I3: 6,9 => CTR => I3: 1,2,3,8
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # E7: 6,9 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # E7: 4,5 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # E7: 6,9 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # E7: 4,5 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # G3: 3,6 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # G3: 1,4,8 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # E7: 6,9 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # E7: 4,5 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # E7: 6,9 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # E7: 4,5 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # G3: 3,6 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # G3: 1,4,8 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # E4: 7,9 => UNS
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 # E4: 1,5 => CTR => E4: 7,9
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 # A3: 2,3 => CTR => A3: 1
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 # A8: 2,3 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 # A9: 2,3 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 # A8: 2,3 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 # A9: 2,3 => UNS
* INC # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 # B3: 2,3 => UNS
* DIS # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 # B8: 2,3 => CTR => B8: 4
* PRF # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 + B8: 4 # E7: 6,9 => SOL
* STA # F5: 4 # G1: 3,6 + D2: 1,2,4 + D3: 1,2,4 + I2: 1,2,5 + I3: 1,2,3,8 + E4: 7,9 + A3: 1 + B8: 4 + E7: 6,9
* CNT  45 HDP CHAINS /  47 HYP OPENED