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 sudoku

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explanations:-
this is step:- 23


Note 1
The new 8 in c2r2 makes the 3 in c6r2 and so the 8 in the last cell of box 2.

The new 2 in c1r1 of box 1 makes a 7 in the last cell of the top row, as is the 2 below.
Only a 5 fits in c9r3
and a final 3 in box 3.



Note 2
The new 3 in box 3 makes the 7 in box 9, with a 3 to complete the puzzle.

And yes, 5 in box 9 really was a good guess!!

c1
c2
c3
 
c4
c5
c6
 
c7
c8
c9
 
 
2
 
3
 
6
 
 
5
 
4
 
9
 
 
8
 
1
 27
7
r1
box

1
2
&
3
 
1
 
8
 
5
 
 
7
box 2 
6
8 3
3
 
234 
4
box 3 
9
235 
2
r2
 
4
 
7
 
9
 
 
2
 
1
 8 3
8
 
 367
3
 56
6
357 
5
r3
 
8
 
4
 
3
 
 
9
 
7
 
5
 
 
1
 
2
 
6
r4
box

4
5
&
6
 
9
box 4 
1
 
2
 
 
6
 
3
 
4
 
 
5
box 6 
7
 
8
r5
 
6
 
5
 
7
 
 
8
 
2
 
1
 
 
9
 
3
 
4
r6
 
3
 
2
 
8
 
 
1
 
5
 
7
 
 
6
 
4
 
9
r7
box

7
8
&
9
 
7
box 7 
9
 
4
 
 
3
box 8 
8
 
6
 
  
2
box 9 
5
 
1
r8
 
5
 
6
 
1
 
 
4
 
9
 
2
 
37 
7
 
8
357 
3
r9



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15th january 2010 © 2014