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Tough Sudoku for 14/November/2012


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Sudoku Solving Techniques

Submitted by: sudoku lover

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I guessed it may have been one of your original photos, Fi. Love it!
14/Nov/12 12:13 AM
Fun! Take me with you, Fi!
14/Nov/12 12:33 AM
SER=7.2 UP=24
1) M-Ring: (1=6)b8-ab9=(1-6)e9=(6)ab9 => e9<>25,a8<>16,c7<>1
2) M-Ring: (2=7)a8-g8=(2-7)g3=(7)a3 => ehi8<>2,a1<>7,g3<>4 UP=25
3) Conjugate-linked ALS's:
(2)a8=(135)ghi8 or (2)a9=(5)d9 => i9,28<>5 UP=27
4) Conjugate-linked ALS's extended:
(2)g3=(469)h123-h7=(9)i7 or (2)g8=(74)a8c7 => hi7<>4 UP=81
14/Nov/12 2:09 AM
#1. LC and LS up to UP24
#2. Chain[9] : Kraken Cell (245)i9 :=> -7c7; UP81


-> ; 4c7=7a8 :=> -7c7
14/Nov/12 2:21 AM
25 IF e8=6=>a8=7=>[(a9=2=>b9=6=>e9=1=>f7=3)&(c1=7=>b3=5=>f3=3)]=>e8<>6
26 (1)ab9=>b8<>1
27 (1)ab9=>c7<>1
IF e8=5=>[(a8=7=>c7=4=>b9=1)&(d9=2=>a9=1)]=>e8<>5
29 More...
14/Nov/12 8:33 AM
27 should read
IF e8=5=>[(a8=7=>c7=4=>b9=1)&(d9=2=>a9=1)]=>c7={}=>e8<>5
14/Nov/12 10:38 AM
Sorry ignore last coreection. I corrected the wrong one.
29 shoulde read(1)ab9=>a8<>1
IF a3=7=>[c7=7&(i1=7=>i2=8=>i7=9=>h7=4=>g3=4=>g8=2)]=>a8={}=>a3<>7
14/Nov/12 10:40 AM
SSTS to UP=24
3) (2=1)g8-(1=7)g5-(7=6532)i4568,=>i79<>2.UP=81
14/Nov/12 5:14 PM
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