今天自由時報的數獨 - 數獨

By Dora
at 2006-12-25T09:29
at 2006-12-25T09:29
Table of Contents
ABC DEF GHI
1 .49 173 .5.
2 127 5.. .9.
3 .5. ..9 ..7
4 7.. ..5 ..9
5 .9. 841 57.
6 5.. ..7 ..6
7 9.. 75. ..1
8 ... ..2 735
9 .75 316 98.
(1) 請看第B行 ~ (D4),(E4)必定有6 所以(B4)不為6
(I6)有6 所以(B6)不為6
(G7),(H7)必定有6 所以(B7)不為6 ~ 因此(B8)為6
(2) (C8)=1
接著才是本題最困難的地方~~
若(G7)為4 => (I9)不為4 => (I2)為4 => (F2)不為4 => (F7)為4 => (G7)不為4 矛盾
因此 (G7)不為4 ~
接下來應該沒有問題了
答案
649173258
127568493
853429167
712635849
396841572
584297316
938754621
461982735
275316984
--
1 .49 173 .5.
2 127 5.. .9.
3 .5. ..9 ..7
4 7.. ..5 ..9
5 .9. 841 57.
6 5.. ..7 ..6
7 9.. 75. ..1
8 ... ..2 735
9 .75 316 98.
(1) 請看第B行 ~ (D4),(E4)必定有6 所以(B4)不為6
(I6)有6 所以(B6)不為6
(G7),(H7)必定有6 所以(B7)不為6 ~ 因此(B8)為6
(2) (C8)=1
接著才是本題最困難的地方~~
若(G7)為4 => (I9)不為4 => (I2)為4 => (F2)不為4 => (F7)為4 => (G7)不為4 矛盾
因此 (G7)不為4 ~
接下來應該沒有問題了
答案
649173258
127568493
853429167
712635849
396841572
584297316
938754621
461982735
275316984
--
Tags:
數獨
All Comments

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