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Tough Sudoku for 15/July/2019


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Sudoku Solving Techniques

Submitted by: sudoku lover

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I belatedly posted a response to your comment on the Jul 13 tough. Forgive the delay -- my schedule has been a bit busy lately.
15/Jul/19 12:17 AM
15/Jul/19 12:30 AM
WE #669, SE=8.5
15/Jul/19 12:31 AM
Basics to 28
1. X-chain x=7 =>[b6,h4]<>7 =>i5=5 i1=4.. solve
15/Jul/19 12:38 AM
Dusk or dawn these guys are always around!
15/Jul/19 2:15 AM
Smart squirrel at dusk
Great photo
15/Jul/19 6:28 AM
Hi rwm. Thanks for the response. I made an attempt at Eureka notation. See what you think.
15/Jul/19 8:11 AM
15/Jul/19 8:49 AM
A path to WE #669, SE=8.5
Basics to UP=43
2)(27=1)ab3-(1=6)h3-h7=(6-8)i7=a7-(3=39)a7 21,=>a12<>27
4)(1=5)b1-c2=(5 More...
16/Jul/19 12:23 AM
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