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Tough Sudoku for 4/February/2012

                 
                 
                 
                 
                 
                 
                 
                 
                 

Choose a number, and place it in the grid above.

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Check out the latest post in the Sudoku Forum

Sudoku Solving Techniques

Submitted by: sudoku lover

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Hello, Sweetie Emily!
04/Feb/12 12:29 AM
Hello beautiful girl!
04/Feb/12 1:00 AM
Cute Kid
04/Feb/12 2:47 AM
Hi Emily!
04/Feb/12 7:35 AM
sad day in SudokuLand. A few miniatures for those who yet retain the art:
8.9 ML:
007008010609000004000940080001090200940601000000320000000700100500000300006000072
9.0*
000000 000800007000020350009000120000000004020035000900050040800080900307706000400
8.4**
0040000380096070 More...
04/Feb/12 10:51 AM
mangled again!
8.6***
400010030080005004000069001000530018806200000057001000000000400200700000078100002
04/Feb/12 10:52 AM
8.4**
004000038009607000000001000900060024000090000073000000000048000010500300000300806
04/Feb/12 10:53 AM
9.0*
000000000800007000020350009000120000000004020035000900050040800080900307706000400
04/Feb/12 10:53 AM
8.9 ML
#1 finned-x-wing(4)14/fg,d1=(4)h4 - (9)h4=g4-(9=5678)g9875-(8=574)e5f46 ; f23<>4
#2 (8=7)a4 - (7)f4=s-wing(45)[(5)h3=h46-gi5=e5-(5=4)f4-gh4=h6] - (4)h3=c3-(4=8)c2 ; c4<>8
#3 als-xy-wing(29-1) (1=2)a7-als(234579)[(2)f7=(9)f1]-(9=1)b1 ; a1<>1, b7<>1
// More...
04/Feb/12 8:58 PM
Why sad day?
04/Feb/12 8:59 PM
1. (Site puzzle) Unique possibilities to 25.
2. Whether h7=1,f7=2;OR i7=1=g1;f5=1.UP31.
3. Whether i6=8;OR g4=8,h4=1=i7;d7=8.UP32.Note acd2=489.
4. If e1=1=g4,a4=8,d4=6=f8,f3=3,d3=5;e2 has no candidate.So e2=1.UP33.
5. If e1=3,b23=23,f3=4,f6=6,e6=9,d4=4=b6;column 2 is devoid of 7.So f3=3.UP37.
6. Whether d9=5=a3;OR d9=7=a8;b3=7.UP81.
04/Feb/12 9:48 PM
Site puzzle SE=8.4:
1)(2)h9=e9-(2=1)e4-h4=(1)h7, =>h7<>2
2)(46=9)f6d4-(9=4)d2,=>d5<>4
3)(4):f6=f3-d2=ac2-b13=b46-c5=gi5,=>cgi6 <>4
4)Kraken cell:(5678)d9,=>a3<>7
(5)d9-d3=a3
||
(6)d9-f8=(6-4)f6=(4-7)b6=(7)b3
||
(7)d9-d5=c5-b6= More...
05/Feb/12 1:40 AM
typo, 3)=>chi6<>4
05/Feb/12 2:12 AM
8.6***
#0 SSTS, kite(7) ; g8<>7
// m-wing(27)e8,h87,ha7 ; a8<>7
#1 (2)h8=h7-(2=3)b7-(3=69)bd3 - (6)af3=finned-swordfish(6)afg/168,g9 ; h8<>6
// finned-swordfish(6)bdi/349,b2 ; a3<>6
#2 (6)i4=d4-(6=9)d3-cb3=cb2-(9=53)ei2 - (3)g1=xy-wing(59-6)g1,a1,g8 - (6)a8=g8 More...
05/Feb/12 5:17 AM
8.9 ML:
1. KRow(4)3 # -7i6, SS(7)i75.e5f46 -7f7 SSTE
(48)c32-(8)c4=MW(87)a6|a4/d6e5.gi5
||
(4)f3-(45)f46=XW(7)af46
||
(4-5)h3=h46-(58=7)gi5
05/Feb/12 9:15 AM
8.4**
1. SS(1)eh1.i34=i8-(157)g9h8i7=(7)i23-(7=15)h38-(1)h1=e1 # -1e4, -5h7
// MW(29)i2/g37.g4 -9i4
// FXW(7)ci.37/c1 -7a3
2. UR(69)gh.47::(6)a4=*(29)i27-(125=7)hi8g9-(7=156)g56i4 # -7gh7, -6gh4
// WW(71)h3.g9 -1h8
05/Feb/12 9:17 AM
peterj - in your path for 8.6***
...nit-picking, invalid step #1 since -6f2 required for FSF(6)afg.168/g9 to exist although
(6)afhi3 == something!! (mutant finned swordfish?, jellyfish?) weak with (6)h8...

#1 (2)h8=h7-(2=3)b7-(3=69)bd3 - (6)af3=finned-swordfish(6)afg/168,g9?? ; More...
07/Feb/12 10:25 AM
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