請教一題數獨 - 數獨
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By Megan
at 2008-09-29T19:21
at 2008-09-29T19:21
Table of Contents
原題(請將此行對齊第一行再PageDown)
A B C D E F G H I
1 679 567 579 ∣589 2 1 ∣56789 3 4
2 469 8 459 ∣7 49 3 ∣1 569 2
3 3 12457 124579∣4589 6 489 ∣5789 59 789
──────────┼───────┼─────────
4 8 45 6 ∣3 49 2 ∣459 7 1
5 1247 3 1247 ∣149 5 4679∣469 8 69
6 147 9 1457 ∣14 8 467 ∣2 456 3
──────────┼───────┼─────────
7 24679 2467 3 ∣489 1 489 ∣46789 2469 5
8 469 46 8 ∣2 7 5 ∣3 1 69
9 5 1247 12479 ∣6 3 489 ∣4789 249 789
█ 刪除的數字
█ 解出的數字
█ 人類簡單技巧(Hidden Set, Naked Set, Pointing and Claiming)
█ 人類中等技巧(Wing, Fish, UR, UL, BUG)
█ 人類困難技巧(APE, ATE, Bidirectioal X/Y/- Cycle) ↓以下兩行可稱為試誤法
█ 電腦中等技巧(Forcing X-Chain/Chain, Nishio/Region/Cell Forcing Chain)
█ 電腦困難技巧(Dynamic CRCD Forcing Chain /(+) and Nested Forcing Chain)
A B C D E F G H I
1 679 567 579 ∣589 2 1 ∣56789 3 4
2 469 8 459 ∣7 49 3 ∣1 569 2
3 3 12457 124579∣4589 6 489 ∣5789 59 789
──────────┼───────┼─────────
4 8 45 6 ∣3 49 2 ∣459 7 1
5 1247 3 1247 ∣149 5 4679∣469 8 69
6 147 9 1457 ∣14 8 467 ∣2 456 3
──────────┼───────┼─────────
7 24679 2467 3 ∣489 1 489 ∣46789 2469 5
8 469 46 8 ∣2 7 5 ∣3 1 69
9 5 1247 12479 ∣6 3 489 ∣4789 249 789
A行 A5=1 or A6=1 => C5!=1 and C6!=1 Claiming
8列 A8=4 or B4=4 => (A7,B7,B9,C9)!=4 Claiming
A B C D E F G H I
1 679 567 579 ∣589 2 1 ∣56789 3 4
2 469 8 459 ∣7 49 3 ∣1 569 2
3 3 12457 124579∣4589 6 489 ∣5789 59 789
──────────┼───────┼─────────
4 8 45 6 ∣3 49 2 ∣459 7 1
5 1247 3 247 ∣149 5 4679∣469 8 69
6 147 9 457 ∣14 8 467 ∣2 456 3
──────────┼───────┼─────────
7 2679 267 3 ∣489 1 489 ∣46789 2469 5
8 469 46 8 ∣2 7 5 ∣3 1 69
9 5 127 1279 ∣6 3 489 ∣4789 249 789
I行 (I5,I8)=(6,9) => (I3,I9)!=9 Naked Pair
2,6列 (C2,H6)=5 or (C6,H2)=5 => (C1,C3,H3)!=5 X-wing
A B C D E F G H I
1 679 567 57 ∣589 2 1 ∣56789 3 4
2 469 8 459 ∣7 49 3 ∣1 569 2
3 3 12457 12457 ∣4589 6 489 ∣5789 9 78
──────────┼───────┼─────────
4 8 45 6 ∣3 49 2 ∣459 7 1
5 1247 3 247 ∣149 5 4679∣469 8 69
6 147 9 457 ∣14 8 467 ∣2 456 3
──────────┼───────┼─────────
7 2679 267 3 ∣489 1 489 ∣46789 2469 5
8 469 46 8 ∣2 7 5 ∣3 1 69
9 5 127 1279 ∣6 3 489 ∣4789 249 78
左上宮 (B3,C3)=(1,2) => (B3,C3)!=(4,5,7) Hidden Pair
1列 A1=7, B1=7, or C1=7 => G1!=7 Pointing
2列 A2=4 or C2=4 => E2!=4 Pointing
E2=9 之後 E4=4 B4=5 ... 皆是唯一解
解答
967521834
485793162
321468597
856342971
132957486
794186253
273819645
648275319
519634728
--
A B C D E F G H I
1 679 567 579 ∣589 2 1 ∣56789 3 4
2 469 8 459 ∣7 49 3 ∣1 569 2
3 3 12457 124579∣4589 6 489 ∣5789 59 789
──────────┼───────┼─────────
4 8 45 6 ∣3 49 2 ∣459 7 1
5 1247 3 1247 ∣149 5 4679∣469 8 69
6 147 9 1457 ∣14 8 467 ∣2 456 3
──────────┼───────┼─────────
7 24679 2467 3 ∣489 1 489 ∣46789 2469 5
8 469 46 8 ∣2 7 5 ∣3 1 69
9 5 1247 12479 ∣6 3 489 ∣4789 249 789
█ 刪除的數字
█ 解出的數字
█ 人類簡單技巧(Hidden Set, Naked Set, Pointing and Claiming)
█ 人類中等技巧(Wing, Fish, UR, UL, BUG)
█ 人類困難技巧(APE, ATE, Bidirectioal X/Y/- Cycle) ↓以下兩行可稱為試誤法
█ 電腦中等技巧(Forcing X-Chain/Chain, Nishio/Region/Cell Forcing Chain)
█ 電腦困難技巧(Dynamic CRCD Forcing Chain /(+) and Nested Forcing Chain)
A B C D E F G H I
1 679 567 579 ∣589 2 1 ∣56789 3 4
2 469 8 459 ∣7 49 3 ∣1 569 2
3 3 12457 124579∣4589 6 489 ∣5789 59 789
──────────┼───────┼─────────
4 8 45 6 ∣3 49 2 ∣459 7 1
5 1247 3 1247 ∣149 5 4679∣469 8 69
6 147 9 1457 ∣14 8 467 ∣2 456 3
──────────┼───────┼─────────
7 24679 2467 3 ∣489 1 489 ∣46789 2469 5
8 469 46 8 ∣2 7 5 ∣3 1 69
9 5 1247 12479 ∣6 3 489 ∣4789 249 789
A行 A5=1 or A6=1 => C5!=1 and C6!=1 Claiming
8列 A8=4 or B4=4 => (A7,B7,B9,C9)!=4 Claiming
A B C D E F G H I
1 679 567 579 ∣589 2 1 ∣56789 3 4
2 469 8 459 ∣7 49 3 ∣1 569 2
3 3 12457 124579∣4589 6 489 ∣5789 59 789
──────────┼───────┼─────────
4 8 45 6 ∣3 49 2 ∣459 7 1
5 1247 3 247 ∣149 5 4679∣469 8 69
6 147 9 457 ∣14 8 467 ∣2 456 3
──────────┼───────┼─────────
7 2679 267 3 ∣489 1 489 ∣46789 2469 5
8 469 46 8 ∣2 7 5 ∣3 1 69
9 5 127 1279 ∣6 3 489 ∣4789 249 789
I行 (I5,I8)=(6,9) => (I3,I9)!=9 Naked Pair
2,6列 (C2,H6)=5 or (C6,H2)=5 => (C1,C3,H3)!=5 X-wing
A B C D E F G H I
1 679 567 57 ∣589 2 1 ∣56789 3 4
2 469 8 459 ∣7 49 3 ∣1 569 2
3 3 12457 12457 ∣4589 6 489 ∣5789 9 78
──────────┼───────┼─────────
4 8 45 6 ∣3 49 2 ∣459 7 1
5 1247 3 247 ∣149 5 4679∣469 8 69
6 147 9 457 ∣14 8 467 ∣2 456 3
──────────┼───────┼─────────
7 2679 267 3 ∣489 1 489 ∣46789 2469 5
8 469 46 8 ∣2 7 5 ∣3 1 69
9 5 127 1279 ∣6 3 489 ∣4789 249 78
左上宮 (B3,C3)=(1,2) => (B3,C3)!=(4,5,7) Hidden Pair
1列 A1=7, B1=7, or C1=7 => G1!=7 Pointing
2列 A2=4 or C2=4 => E2!=4 Pointing
E2=9 之後 E4=4 B4=5 ... 皆是唯一解
解答
967521834
485793162
321468597
856342971
132957486
794186253
273819645
648275319
519634728
--
Tags:
數獨
All Comments
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By Blanche
at 2008-09-30T18:43
at 2008-09-30T18:43
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