數獨解不出來 囧 - 數獨
By Skylar DavisLinda
at 2007-05-10T00:33
at 2007-05-10T00:33
Table of Contents
1.
ABC DEF GHI
1 xxx.xx2.xx9
2 xx6.xxx.x1x
3 2xx.1xx.453
4 xxx.75x.xxx
5 x5x.xxx.x8x
6 xxx.x26.xxx
7 578.xx3.xx2
8 x4x.xxx.6xx
9 6xx.8xx.xxx
(1) 我想這些 應該都知道怎麼來的
C1=5 G2=2 H1=6 E3=6 B4=6 F4=8 H4=2 C5=2 I5=6 B9=2
D8=2 D7=6 I8=8 G1=8 I2=7 E2=8 B3=8 A6=8 D2=5 F8=5
(2) A4,A5必有4, A1,A2不為4
F2,F3必有9, F5,F9不為9
E7,E8,E9必有9, E5不為9
D1,E1必有3, A1,B1不為3
(3) B1剩下1
(4) E5,F5必有1, A5,G5不為1
D5,E5,F5必有4, D6不為4
(5) B6,D6非3即9, C6,G6,H6不為3也不為9 <=本題最難的解法(ER=3.0 / max>11.4)
(6) G4,G5必有3, G9不為3
G4,G5必有9, G7,G9不為9
G7剩下1
G6,G9非5即7, G5不為7
接下來 就是輕鬆的 "唯一"(Single)了
2. 這題比第一題還要簡單, 試試看, 運用上面說的方法
3. 這題純粹用唯一解就能出來了
如F3=2 I3=3 F8=9...etc 很容易找的
ABC DEF GHI
1 x5x.3xx.2xx
2 2x3.x1x.xxx
3 xx7.94x.65x
4 xx2.xxx.xx6
5 xxx.291.xxx
6 9xx.xxx.5xx
7 x31.x24.8xx
8 xxx.x8x.3x7
9 xx6.xx3.x4x
--
ABC DEF GHI
1 xxx.xx2.xx9
2 xx6.xxx.x1x
3 2xx.1xx.453
4 xxx.75x.xxx
5 x5x.xxx.x8x
6 xxx.x26.xxx
7 578.xx3.xx2
8 x4x.xxx.6xx
9 6xx.8xx.xxx
(1) 我想這些 應該都知道怎麼來的
C1=5 G2=2 H1=6 E3=6 B4=6 F4=8 H4=2 C5=2 I5=6 B9=2
D8=2 D7=6 I8=8 G1=8 I2=7 E2=8 B3=8 A6=8 D2=5 F8=5
(2) A4,A5必有4, A1,A2不為4
F2,F3必有9, F5,F9不為9
E7,E8,E9必有9, E5不為9
D1,E1必有3, A1,B1不為3
(3) B1剩下1
(4) E5,F5必有1, A5,G5不為1
D5,E5,F5必有4, D6不為4
(5) B6,D6非3即9, C6,G6,H6不為3也不為9 <=本題最難的解法(ER=3.0 / max>11.4)
(6) G4,G5必有3, G9不為3
G4,G5必有9, G7,G9不為9
G7剩下1
G6,G9非5即7, G5不為7
接下來 就是輕鬆的 "唯一"(Single)了
2. 這題比第一題還要簡單, 試試看, 運用上面說的方法
3. 這題純粹用唯一解就能出來了
如F3=2 I3=3 F8=9...etc 很容易找的
ABC DEF GHI
1 x5x.3xx.2xx
2 2x3.x1x.xxx
3 xx7.94x.65x
4 xx2.xxx.xx6
5 xxx.291.xxx
6 9xx.xxx.5xx
7 x31.x24.8xx
8 xxx.x8x.3x7
9 xx6.xx3.x4x
--
Tags:
數獨
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