SE C510 數獨題目 惡魔級*1 - 數獨
By Catherine
at 2010-04-04T09:13
at 2010-04-04T09:13
Table of Contents
※ 引述《keepaway (遠一點)》之銘言:
: 我卡住了 <( ̄︶ ̄)>
: 解到這邊
: 123 456 789 (X)
: 1 7□□∣369∣428
: 2 942∣178∣563
: 3 368∣542∣□9□
: ——————————————
: 4 67□∣□□□∣□3□
: 5 4□3∣□9□∣□7□
: 6 28□∣□3□∣□1□
: ——————————————
: 7 127|984∣356
: 8 594∣6□3∣□8□
: 9 836∣□5□∣□49
: (Y)
(7,3)(9,3)(9,8) 只剩17可以填
(7,8)可以填127
Uniqueness Test 1
這是屬於 "因為這個題目是唯一解" 的前提下出現的解法
如果 (7,8) 不是 2 則 (7,3)(7,8)(9,3)(9,8) 都剩下 [1,7]
那剩下兩種可能 -- 其他地方都有數字 這四格造成兩個答案
-- 其他地方解不出來 造成無解 (唯一解的題目只有後面的可能)
因此(7,8)為2
--
: 我卡住了 <( ̄︶ ̄)>
: 解到這邊
: 123 456 789 (X)
: 1 7□□∣369∣428
: 2 942∣178∣563
: 3 368∣542∣□9□
: ——————————————
: 4 67□∣□□□∣□3□
: 5 4□3∣□9□∣□7□
: 6 28□∣□3□∣□1□
: ——————————————
: 7 127|984∣356
: 8 594∣6□3∣□8□
: 9 836∣□5□∣□49
: (Y)
(7,3)(9,3)(9,8) 只剩17可以填
(7,8)可以填127
Uniqueness Test 1
這是屬於 "因為這個題目是唯一解" 的前提下出現的解法
如果 (7,8) 不是 2 則 (7,3)(7,8)(9,3)(9,8) 都剩下 [1,7]
那剩下兩種可能 -- 其他地方都有數字 這四格造成兩個答案
-- 其他地方解不出來 造成無解 (唯一解的題目只有後面的可能)
因此(7,8)為2
--
Tags:
數獨
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