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75) 8, 7=5 Only place in row that 5 can go
74) 9, 7=2 Only place in row that 2 can go
73) 8, 6=2 Only place in row that 2 can go
72) 9, 6=1 Only place in row that 1 can go
71) 9, 3=5 Only place in row that 5 can go
70) 8, 3=1 Guess 1 from 15 (cycle 69)
69) 7, 9=7 Only place in row that 7 can go
68) 8, 9=3 Only place in row that 3 can go
67) 9, 2=3 Only place in row that 3 can go
66) 8, 2=8 Only place in row that 8 can go
65) 9, 4=8 Only place in row that 8 can go
64) 8, 4=4 Only place in row that 4 can go
63) 9, 8=4 Only place in row that 4 can go
62) 8, 8=6 Only place in row that 6 can go
61) 9, 5=6 Only place in row that 6 can go
60) 8, 5=7 Only place in row that 7 can go
59) 7, 5=3 Guess 3 from 37 (cycle 58)
58) 7, 7=8 Only place in column that 8 can go
57) 7, 4=5 Guess 5 from 58 (cycle 56)
56) 7, 3=2 Guess 2 from 25 (cycle 55)
55) 7, 8=1 Only number this square can be.
54) 7, 2=4 Guess 4 from 348
53) 7, 6=9 Only place in row that 9 can go
52) 9, 1=7 Only place in row that 7 can go
51) 8, 1=9 Only place in row that 9 can go
50) 7, 1=6 Guess 6 from 679 (cycle 49)
49) 6, 8=5 Only place in column that 5 can go
48) 6, 7=4 Guess 4 from 45 (cycle 47)
47) 6, 6=3 Only place in column that 3 can go
46) 6, 5=1 Guess 1 from 13 (cycle 45)
45) 6, 2=9 Only place in column that 9 can go
44) 6, 1=8 Guess 8 from 89 (cycle 43)
43) 6, 9=2 Only number this square can be.
42) 6, 4=6 Only number this square can be.
41) 5, 7=3 Only place in column that 3 can go
40) 5, 9=1 Only place in column that 1 can go
39) 5, 6=7 Only place in column that 7 can go
38) 5, 5=8 Only place in column that 8 can go
37) 5, 4=2 Guess 2 from 28 (cycle 36)
36) 6, 3=7 Only number this square can be.
35) 5, 3=6 Guess 6 from 67 (cycle 34)
34) 5, 2=5 Guess 5 from 58 (cycle 33)
33) 5, 1=4 Guess 4 from 4678 (cycle 32)
32) 4, 9=6 Only place in column that 6 can go
31) 4, 8=8 Only place in column that 8 can go
30) 4, 7=7 Guess 7 from 78 (cycle 29)
29) 4, 6=4 Guess 4 from 47 (cycle 28)
28) 4, 5=5 Guess 5 from 5678 (cycle 27)
27) 4, 3=3 Guess 3 from 3567 (cycle 26)
26) 4, 2=1 Guess 1 from 13458 (cycle 25)
25) 4, 1=2 Guess 2 from 24678 (cycle 24)
24) 3, 9=4 Only place in column that 4 can go
23) 3, 8=3 Guess 3 from 34 (cycle 22)
22) 3, 6=6 Only place in column that 6 can go
21) 3, 5=2 Guess 2 from 26 (cycle 20)
20) 3, 4=1 Guess 1 from 126 (cycle 19)
19) 3, 3=8 Only place in column that 8 can go
18) 3, 2=7 Guess 7 from 78 (cycle 17)
17) 3, 1=5 Guess 5 from 578 (cycle 16)
16) 2, 9=5 Only place in column that 5 can go
15) 2, 8=2 Guess 2 from 25 (cycle 14)
14) 2, 7=1 Guess 1 from 125 (cycle 13)
13) 2, 6=8 Only place in column that 8 can go
12) 2, 4=7 Guess 7 from 1278
11) 2, 3=4 Guess 4 from 4578 (cycle 10)
10) 2, 1=3 Guess 3 from 34578 (cycle 9)
9) 1, 9=8 Only place in column that 8 can go
8) 1, 8=7 Guess 7 from 78 (cycle 7)
7) 1, 7=6 Guess 6 from 678 (cycle 6)
6) 1, 6=5 Guess 5 from 5678 (cycle 5)
5) 1, 5=4 Guess 4 from 45678 (cycle 4)
4) 1, 4=3 Guess 3 from 345678 (cycle 3)
3) 1, 3=9 Only place in column that 9 can go
2) 1, 2=2 Guess 2 from 2345789 (cycle 1)
1) 1, 1=1 Guess 1 from 12345789 (cycle 0) |  |