SudokuMan.com back to Sudoku Homepage
Sudoku: the hardest sudoku in the world# 99Date: 02/17/2010   Rating: good
Start   Shortcut to This Start Point
1
7
9
3
2
8
9
6
5
5
3
9
1
8
6
4
2
3
1
4
7
7
3



     




Solution so far
158437296
436529178
279618534
825376941
714982653
693154782
382765419
541293867
967841325
Started with 23 numbers. Found 81.
Status: Solved Time: 1.81s
Used 2 guesses. ( 0 bad guesses. )
Edit


58) 1, 9=9 Only place in row that 9 can go
57) 4, 9=8 Only place in row that 8 can go
56) 2, 9=6 Only place in row that 6 can go
55) 9, 9=5 Only place in row that 5 can go
54) 8, 9=2 Only place in row that 2 can go
53) 5, 8=9 Only place in row that 9 can go
52) 7, 8=8 Only place in row that 8 can go
51) 1, 8=5 Only place in row that 5 can go
50) 6, 7=5 Only place in row that 5 can go
49) 9, 7=9 Only place in row that 9 can go
48) 4, 2=5 Only place in row that 5 can go
47) 6, 2=9 Only place in row that 9 can go
46) 4, 5=9 Only place in row that 9 can go
45) 6, 5=2 Only place in row that 2 can go
44) 4, 8=2 Only place in row that 2 can go
43) 8, 8=6 Only place in row that 6 can go
42) 5, 7=6 Only place in row that 6 can go
41) 2, 7=8 Only place in row that 8 can go
40) 4, 7=7 Only place in row that 7 can go
39) 2, 6=9 Only place in row that 9 can go
38) 7, 5=6 Only place in row that 6 can go
37) 8, 5=5 Only place in row that 5 can go
36) 5, 6=5 Only place in row that 5 can go
35) 8, 6=8 Only place in row that 8 can go
34) 1, 5=7 Only place in row that 7 can go
33) 7, 6=7 Only place in row that 7 can go
32) 6, 4=6 Only place in row that 6 can go
31) 5, 4=7 Only place in row that 7 can go
30) 1, 4=8 Only place in row that 8 can go
29) 2, 4=2 Only place in column that 2 can go
28) 3, 7=2 Only place in column that 2 can go
27) 7, 7=4 Only place in row that 4 can go
26) 5, 9=4 Only place in row that 4 can go
25) 6, 9=1 Only place in row that 1 can go
24) 6, 8=3 Only place in row that 3 can go
23) 4, 6=1 Only place in row that 1 can go
22) 9, 5=3 Only place in row that 3 can go
21) 5, 3=1 Only place in row that 1 can go
20) 6, 3=8 Only place in row that 8 can go
19) 2, 3=7 Only place in row that 7 can go
18) 8, 3=3 Only place in row that 3 can go
17) 9, 3=4 Only place in row that 4 can go
16) 3, 1=8 Only place in row that 8 can go
15) 4, 1=4 Only place in row that 4 can go
14) 5, 1=3 Only place in row that 3 can go
13) 9, 1=6 Only place in row that 6 can go
12) 7, 1=2 Only place in row that 2 can go
11) 1, 3=2 Guess 2 from 278 (cycle 10)
10) 8, 4=4 Only place in row that 4 can go
9) 9, 4=1 Only place in column that 1 can go
8) 7, 2=1 Only number this square can be.
7) 8, 2=7 Only number this square can be.
6) 3, 2=6 Only number this square can be.
5) 2, 1=5 Only place in group that 5 can go.
4) 3, 6=3 Only place in column that 3 can go
3) 3, 5=4 Only place in column that 4 can go
2) 1, 2=4 Guess 4 from 457 (cycle 1)
1) 3, 8=1 Only place in column that 1 can go