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Tough Sudoku for 2/February/2017

                 
                 
                 
                 
                 
                 
                 
                 
                 

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Sudoku Solving Techniques

Submitted by: sudoku lover

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SE=8.3
SSTS
1)(2)a2=(2-6)d2=(6-1)d1=(1)b1,=>a2<>1
2)(4=8)c8-a87=a5-(8=5)f5-(5=4)d5,=> d8<>4
3)(7)e3=e7-a7=(7-4)a8=(4-2)a2=(2)d2,=>e3<>2.UP=81
02/Feb/17 12:51 AM
#24 59@a1c3=>a1<>1 9@e46=>e1<>9 4@g23=>g46<>4
1?@a2=>{d1=1,d2=2=>d7=5=>d5=4=>d8=4}=>d3={}=>a2< ;>1
#25 159@a146=>a46<>48 More...
02/Feb/17 8:03 AM
#24 59@a1c3=>a1<>1 9@e46=>e1<>9 4@g23=>g46<>4
1?@a2=>{d1=1,d2=2=>d7=5=>d5=4=>d8=4}=>d3={}=>a2< ;>1
#25 159@a146=>a46<>48 8?@f5=>d5=5=>d8=4=>c8=8=>abc456<>8=>f5<>8
#31 More...
02/Feb/17 8:07 AM
Standard techniques up 24
1. (4=8)c8-a78=a5-(8=5)f5-(5=4)d5 =>-4d8 up 30
2. (7)a8=f8-(7=2)e7-(2=184)cdg8 =>-4a8; stte
03/Feb/17 1:46 AM
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