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Tough Sudoku for 14/October/2015

                 
                 
                 
                 
                 
                 
                 
                 
                 

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Sudoku Solving Techniques

Submitted by: sudoku lover

Indicate which comments you would like to be able to see

SG's path 1.5 points, SE=7.6

1. als-xz loop: (1=29,5)g123-(5,479=1)g45,hi6;
-2i1, -9g457,h5,i4, -4h5, -1g9
2. SS(3)c15.h52; -3a2,i1
3. (3)i2=(3-5)i4=i1-(5=9)g3-(9=1)g2 # -1i2
4. SS(1)i48.d85; -1e4
5. SS(4)hc6.cgh7; -4h9
14/Oct/15 2:28 AM
alternate A5: Symmetry=Rotational180, Start=26, SSTS=31, SG=14.0, SE=8.9
030900200009005300000030081004800000760000098000009400140090000002400800005002070

about 3.0 points seems best for a ** level solution
14/Oct/15 2:59 AM
You sure can, sweetie.
14/Oct/15 4:51 AM
Se=7.6 UP to 27
1)Ext. ER:(4)c6=[(568)c789=(4)a9=(7)a8],(6)b5=(8)b4=(5)b1 or (4)h6=(159)g234=(2)g1,(7)g5=(9)i6 => h9<>4,g1<>5,c6<>9 UP=28
2)Sue-de-coq:(1=6)h9=(679)i678 or (6)h9 = (179)i678 => i124<>9,i9<>167,g9<>1,h8<>16,h7<>6
3) Kite(1):d85-eh1 => h5<>1 UP=36
4) Kite(1)dg5-i48 => UP=81
14/Oct/15 5:28 AM
Aaaahh ... what a cutie pie... of course you can come in!
14/Oct/15 5:55 AM
It depends! Maybe! as long as you behave this time! Ok!
14/Oct/15 7:26 AM
Standard techniques UP 27
1. (1259=4)g1234-(4=9)h6-(9=7)i6-g5=(78)g79 =>-12g9 UP 29
2. (15)gi4=(1)e4-e9=ghi9-(1=679)i678-(6)h789=(6-3)h2=h5 =>-3i4 UP 34
// Kite (1)e9=gh9-i8=i4 =>-1e4 UP 34
// XW (4)gh7=)4c7-c6=h6 =>-4h9 UP 81
14/Oct/15 8:03 AM
#28 5@h78=>i87<>5 2@df7=>i7<>2 3?@i4=>[g4=5=>e4=1=>d8=1&i1=5=>i9=2=>i8=1]=>i4<>3 #33 2?@g9=>{g7=8=>g5=7&i1=2=>[h2=6=>g2=1&i4=5=>g4=1]}=>g9<>2 #35 1?@g9=>d58=1=>g9<>1 1?@h9=>ei4=1=>h9<>1 #37 More...
14/Oct/15 8:58 AM
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