Analysis of xx-ph-00027328-KC40b-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.76....7...5......4..87..4....38....3....2....5....1.4...59....9.1...5...2...6. initial

Autosolve

position: 98.76....7...5......4..87..4....38....3....2....5....1.4...59....9.1...5...2...6. autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000006

List of important HDP chains detected for B2,D2: 3..:

* DIS # D2: 3 # I3: 2,9 => CTR => I3: 6
* DIS # D2: 3 + I3: 6 # E6: 2,9 => CTR => E6: 4,7,8
* DIS # D2: 3 + I3: 6 + E6: 4,7,8 # D8: 6,8 => CTR => D8: 4
* DIS # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 # F5: 6,7 => CTR => F5: 1,9
* DIS # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 + F5: 1,9 # F6: 6,7 => CTR => F6: 2,9
* DIS # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 + F5: 1,9 + F6: 2,9 => CTR => D2: 1,4,9
* STA D2: 1,4,9
* CNT   6 HDP CHAINS /  28 HYP OPENED

List of important HDP chains detected for G1,G5: 5..:

* DIS # G1: 5 # G2: 4,6 => CTR => G2: 1,2
* DIS # G1: 5 + G2: 1,2 # C7: 1,2 => CTR => C7: 6,7,8
* DIS # G1: 5 + G2: 1,2 + C7: 6,7,8 # B4: 7,9 => CTR => B4: 1,2,6
* DIS # G5: 5 # B4: 7,9 => CTR => B4: 1,2,5,6
* PRF # G5: 5 + B4: 1,2,5,6 # E4: 7,9 => SOL
* STA # G5: 5 + B4: 1,2,5,6 + E4: 7,9
* CNT   5 HDP CHAINS /  90 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....7...5......4..87..4....38....3....2....5....1.4...59....9.1...5...2...6. initial
98.76....7...5......4..87..4....38....3....2....5....1.4...59....9.1...5...2...6. autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
H7,G9: 1.. / H7 = 1  =>  2 pairs (_) / G9 = 1  =>  0 pairs (_)
I7,G8: 2.. / I7 = 2  =>  3 pairs (_) / G8 = 2  =>  0 pairs (_)
G6,H6: 3.. / G6 = 3  =>  2 pairs (_) / H6 = 3  =>  1 pairs (_)
B2,D2: 3.. / B2 = 3  =>  0 pairs (_) / D2 = 3  =>  5 pairs (_)
H4,G5: 5.. / H4 = 5  =>  3 pairs (_) / G5 = 5  =>  1 pairs (_)
G1,G5: 5.. / G1 = 5  =>  3 pairs (_) / G5 = 5  =>  1 pairs (_)
H2,I2: 8.. / H2 = 8  =>  0 pairs (_) / I2 = 8  =>  0 pairs (_)
E9,F9: 9.. / E9 = 9  =>  3 pairs (_) / F9 = 9  =>  0 pairs (_)
* DURATION: 0:00:04.982553  START: 10:07:24.615131  END: 10:07:29.597684 2020-12-09
* CP COUNT: (8)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
B2,D2: 3.. / B2 = 3  =>  0 pairs (_) / D2 = 3 ==>  0 pairs (X)
G1,G5: 5.. / G1 = 5 ==>  5 pairs (_) / G5 = 5 ==>  0 pairs (*)
* DURATION: 0:01:00.516984  START: 10:07:29.598242  END: 10:08:30.115226 2020-12-09
* REASONING B2,D2: 3..
* DIS # D2: 3 # I3: 2,9 => CTR => I3: 6
* DIS # D2: 3 + I3: 6 # E6: 2,9 => CTR => E6: 4,7,8
* DIS # D2: 3 + I3: 6 + E6: 4,7,8 # D8: 6,8 => CTR => D8: 4
* DIS # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 # F5: 6,7 => CTR => F5: 1,9
* DIS # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 + F5: 1,9 # F6: 6,7 => CTR => F6: 2,9
* DIS # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 + F5: 1,9 + F6: 2,9 => CTR => D2: 1,4,9
* STA D2: 1,4,9
* CNT   6 HDP CHAINS /  28 HYP OPENED
* REASONING G1,G5: 5..
* DIS # G1: 5 # G2: 4,6 => CTR => G2: 1,2
* DIS # G1: 5 + G2: 1,2 # C7: 1,2 => CTR => C7: 6,7,8
* DIS # G1: 5 + G2: 1,2 + C7: 6,7,8 # B4: 7,9 => CTR => B4: 1,2,6
* DIS # G5: 5 # B4: 7,9 => CTR => B4: 1,2,5,6
* PRF # G5: 5 + B4: 1,2,5,6 # E4: 7,9 => SOL
* STA # G5: 5 + B4: 1,2,5,6 + E4: 7,9
* CNT   5 HDP CHAINS /  90 HYP OPENED
* DCP COUNT: (2)
* SOLUTION FOUND

Header Info

27328;KC40b;GP;24;11.30;11.30;2.80

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for B2,D2: 3..:

* INC # D2: 3 # F2: 1,9 => UNS
* INC # D2: 3 # F2: 2,4 => UNS
* INC # D2: 3 # H3: 1,9 => UNS
* INC # D2: 3 # H3: 5 => UNS
* INC # D2: 3 # D4: 1,9 => UNS
* INC # D2: 3 # D5: 1,9 => UNS
* INC # D2: 3 # F2: 2,9 => UNS
* INC # D2: 3 # F2: 1,4 => UNS
* DIS # D2: 3 # I3: 2,9 => CTR => I3: 6
* INC # D2: 3 + I3: 6 # E4: 2,9 => UNS
* DIS # D2: 3 + I3: 6 # E6: 2,9 => CTR => E6: 4,7,8
* INC # D2: 3 + I3: 6 + E6: 4,7,8 # E4: 2,9 => UNS
* INC # D2: 3 + I3: 6 + E6: 4,7,8 # E4: 7 => UNS
* INC # D2: 3 + I3: 6 + E6: 4,7,8 # F2: 2,9 => UNS
* INC # D2: 3 + I3: 6 + E6: 4,7,8 # F2: 1,4 => UNS
* INC # D2: 3 + I3: 6 + E6: 4,7,8 # E4: 2,9 => UNS
* INC # D2: 3 + I3: 6 + E6: 4,7,8 # E4: 7 => UNS
* DIS # D2: 3 + I3: 6 + E6: 4,7,8 # D8: 6,8 => CTR => D8: 4
* INC # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 # A7: 6,8 => UNS
* INC # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 # C7: 6,8 => UNS
* INC # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 # D5: 6,8 => UNS
* INC # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 # D5: 1,9 => UNS
* INC # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 # B8: 6,7 => UNS
* INC # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 # B8: 2,3 => UNS
* DIS # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 # F5: 6,7 => CTR => F5: 1,9
* DIS # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 + F5: 1,9 # F6: 6,7 => CTR => F6: 2,9
* DIS # D2: 3 + I3: 6 + E6: 4,7,8 + D8: 4 + F5: 1,9 + F6: 2,9 => CTR => D2: 1,4,9
* INC D2: 1,4,9 # B2: 3 => UNS
* STA D2: 1,4,9
* CNT  28 HDP CHAINS /  28 HYP OPENED

Full list of HDP chains traversed for G1,G5: 5..:

* INC # G1: 5 # B2: 1,2 => UNS
* INC # G1: 5 # C2: 1,2 => UNS
* INC # G1: 5 # A3: 1,2 => UNS
* INC # G1: 5 # B3: 1,2 => UNS
* INC # G1: 5 # F1: 1,2 => UNS
* INC # G1: 5 # F1: 4 => UNS
* INC # G1: 5 # C4: 1,2 => UNS
* INC # G1: 5 # C7: 1,2 => UNS
* INC # G1: 5 # H2: 1,9 => UNS
* INC # G1: 5 # H2: 4,8 => UNS
* INC # G1: 5 # D3: 1,9 => UNS
* INC # G1: 5 # D3: 3 => UNS
* INC # G1: 5 # I5: 4,6 => UNS
* INC # G1: 5 # G6: 4,6 => UNS
* INC # G1: 5 # D5: 4,6 => UNS
* INC # G1: 5 # F5: 4,6 => UNS
* DIS # G1: 5 # G2: 4,6 => CTR => G2: 1,2
* INC # G1: 5 + G2: 1,2 # G6: 4,6 => UNS
* INC # G1: 5 + G2: 1,2 # G6: 3 => UNS
* INC # G1: 5 + G2: 1,2 # D5: 4,6 => UNS
* INC # G1: 5 + G2: 1,2 # F5: 4,6 => UNS
* INC # G1: 5 + G2: 1,2 # B2: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 # C2: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 # A3: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 # B3: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 # F1: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 # F1: 4 => UNS
* INC # G1: 5 + G2: 1,2 # C4: 1,2 => UNS
* DIS # G1: 5 + G2: 1,2 # C7: 1,2 => CTR => C7: 6,7,8
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # C4: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # C4: 6,7 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # B2: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # C2: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # A3: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # B3: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # F1: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # F1: 4 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # C4: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # C4: 6,7 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # B2: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # C2: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # F2: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # H2: 1,9 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # H2: 4,8 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # D3: 1,9 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # D3: 3 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # I5: 7,9 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 # H6: 7,9 => UNS
* DIS # G1: 5 + G2: 1,2 + C7: 6,7,8 # B4: 7,9 => CTR => B4: 1,2,6
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # E4: 7,9 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # E4: 7,9 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # E4: 2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # I5: 7,9 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # H6: 7,9 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # E4: 7,9 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # E4: 2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # G6: 4,6 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # G6: 3 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # D5: 4,6 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # F5: 4,6 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # B2: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # C2: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # A3: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # B3: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # F1: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # F1: 4 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # C4: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # C4: 6,7 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # B2: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # C2: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # F2: 1,2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # H2: 1,9 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # H2: 4,8 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # D3: 1,9 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # D3: 3 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # I5: 7,9 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # H6: 7,9 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # E4: 7,9 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # E4: 2 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # G6: 4,6 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # G6: 3 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # D5: 4,6 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 # F5: 4,6 => UNS
* INC # G1: 5 + G2: 1,2 + C7: 6,7,8 + B4: 1,2,6 => UNS
* INC # G5: 5 # I4: 7,9 => UNS
* INC # G5: 5 # I5: 7,9 => UNS
* INC # G5: 5 # H6: 7,9 => UNS
* DIS # G5: 5 # B4: 7,9 => CTR => B4: 1,2,5,6
* PRF # G5: 5 + B4: 1,2,5,6 # E4: 7,9 => SOL
* STA # G5: 5 + B4: 1,2,5,6 + E4: 7,9
* CNT  89 HDP CHAINS /  90 HYP OPENED