Timer
00:00:00
Start Pause Reset
7 Comments Previous / NextHelp

Tough Sudoku for 16/June/2015

                 
                 
                 
                 
                 
                 
                 
                 
                 

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

Welcome to the Sudoku Forums!

Submitted by: Gath

Indicate which comments you would like to be able to see

Great photo, Sue.
16/Jun/15 12:07 AM
Seems barns are always described by the adjective 'old'. So many are falling apart.
16/Jun/15 12:10 AM
SE=7.3 UP to 34
1)2-chain logic:(8)e9=(1)e6=(4)e2=(5)e8=(6)e1 or (8)d9=(9)d8=(7)f8,(3)a8=(25)h78=(1)h5=(6)e1 => d89f8<>5(or-rule),g1<>6(and-rule) UP=35
2)ALS-XZ:(6=1)b9-(6=14)c37 => c9<>1 UP=81
16/Jun/15 12:54 AM
Basics; UP34
(6=7)c5-7c1=(7-5)a1=*[2b8=(2-5)a7=5c9-5c1=*5e1-(5=4)e8]-4b8=4c7 :=> -4c1,-6c7; UP81
or
[6e1=6e9-(6=145)df7,e8]-5e1
[(1=6)b9-(6=14)c73]-1c9; UP81
16/Jun/15 2:58 AM
Great old barn photo
16/Jun/15 6:15 AM
#29 5@df4=>i4<>5 #33 6@bc5=>g5<>6 #34 25@ah7=>i7<>25&cdf7<>5
#35 1@def6=>36@gh6=>e6h5<>6 8?@b5=>[b9=6=>e1=6=>h1=1&c5=6=>c1=7=>a1=5=>h7=5]=>h5={}=>b5<>8
#40 39@a89=>a8<>5 More...
16/Jun/15 8:38 AM
Making use of the Unresolvable Rectangle:

1. Note ah7=25.Unique possibilities to 34.
2. Whether a7=5,bc9=16;OR a7=2,b8=4,e8=5;e1=6 or else 56UR @ df34.UP81.
16/Jun/15 6:55 PM
Please Log in to post a comment.

Not a member? Joining is quick and free. As a member you get heaps of benefits.

Join Now Login