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Tough Sudoku for 4/April/2014


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

  1 2 3 4 5 6 7 8 9
Check out the latest post in the Sudoku Forum

Sudoku Solving Techniques

Submitted by: sudoku lover

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Nice patina, Kate!
(Hello, Alfred! Hope you found it challenging today!)
04/Apr/14 12:06 AM
Did I miss something? That was unusually easy.
04/Apr/14 12:42 AM
Hi Kate and Shiela. Not too hard today.

1. Note e12f3=149.Unique possibilities to 43.
2. c5=38,to avoid the 18 unresolvable rectangle @ gi58.UP81.
04/Apr/14 2:16 AM
2. Whether a3=3,d3=7;OR b3=3=c8,c9=2,c1=7;d1=6.UP81.
04/Apr/14 2:24 AM
(26) 67@d13=>d27<>6
(43) 45@h7i9=>g9<>45&gi8<>4
(44) 4?@b9=>[b2=9=>b6=5&h7=4=>h4=5=>d4=8]=>d6={}=>b9<>4
(45) 7?@c9=>[f9=2=>i9=5=>h7=4&c8=2=>c5=3=>g5=5]=>e4={}=>c9<>7
VHBC to More...
04/Apr/14 9:49 AM
Yes, that's what I did Alfred!
04/Apr/14 12:08 PM
Great minds think alike, Kate!
Here is a third variation:

2. Whether c5=5,c8=3,b8=4;OR gi5=5,h4=4=i9;ba9=97.UP81.
04/Apr/14 2:53 PM

2. Whether g4=4=f6;OR g4=5=c5,c8=3;f8=2.UP81.

This seems to be the shortest way, without resorting to the UR.
04/Apr/14 3:05 PM
Don't understand the lingo but got it out!
If I have the right Kate, was that a before photo?
05/Apr/14 12:40 AM
I don't know what UR means, but I had to resort to just plain guessing in one place, but that one entry was all it took to release all the rest to 'obvious' status.
05/Apr/14 1:50 PM
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