數獨求解 - 數獨
By Ivy
at 2012-09-10T00:43
at 2012-09-10T00:43
Table of Contents
防雷
1 2 3 4 5 6 7 8 9
╭─┬─┬─╥─┬─┬─╥─┬─┬─╮ 看候選數
a│ │7 │ ║5 │ │1 ║8 │6 │9 │ A 2469 D479
├─┼─┼─╫─┼─┼─╫─┼─┼─┤ B 1246
b│8 │ │9 ║6 │ │2 ║ │1 │7 │ C 49
├─┼─┼─╫─┼─┼─╫─┼─┼─┤
c│1 │6 │ ║9 │8 │7 ║ │ │ │ 首先(b,2)(g,2)不能是2
╞═╪═╪═╬═╪═╪═╬═╪═╪═╡ 所以(d,2)(e,2)(f,2)必然有2
d│3 │ │8 ║7 │2 │6 ║ │ │ │ 因此AB的2都會刪掉
├─┼─┼─╫─┼─┼─╫─┼─┼─┤
e│ │ │7 ║3 │1 │ ║6 │8 │ │ 再來,因為左下九宮格1的可能只在
├─┼─┼─╫─┼─┼─╫─┼─┼─┤ (h,3)(i,3) 所以B的1會刪掉
f│A│ │B║8 │5 │C║ │D│3 │
╞═╪═╪═╬═╪═╪═╬═╪═╪═╡ 因此A469 B46 C49
g│ │ │ ║4 │7 │8 ║ │2 │1 │ 可以把D的49刪掉,所以D為7
├─┼─┼─╫─┼─┼─╫─┼─┼─┤
h│ │4 │ ║ │6 │5 ║9 │ │8 │
├─┼─┼─╫─┼─┼─╫─┼─┼─┤
i│ │8 │ ║ │9 │3 ║ │ │6 │
╰─┴─┴─╨─┴─┴─╨─┴─┴─╯
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數獨
All Comments
By Skylar Davis
at 2012-09-12T07:19
at 2012-09-12T07:19
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