简单 三明治数独
网格外部的提示数给出每行和每列中夹在1和9之间的数字之和。
新手 三明治数独? 每个外部数字是该行或列中1和9之间数字的和。从零和线索开始。
0
27
25
0
0
0
17
9
8
22
12
9
0
8
9
16
6
11
5
8
1
2
6
4
3
7
9
5
1
3
6
9
9
6
9
4
8
7
5
9
7
6
2
5
9
7
2
6
5
1
9
8
3
4
5
7
什么是三明治数独？
难度
★★★★☆
4/5
约束类型
外部线索
典型给定数
4–10 clue values
平均解题 (简单)
12 分钟
简单 级别的解题技巧
| 技巧 | 描述 | 级别 |
|---|
准备深入探索?试试 中等 三明治数独 解锁中级技巧。
在简单需要掌握的技巧
- 数独中的笔记 — Before placing anything, note where 1 and 9 can legally sit in each row and column given its clue — sandwich solving is crust bookkeeping, and notes are the ledger.
- Last Possible Number technique — A clue of 0 glues 1 and 9 together and a clue of 35 pins them to the ends — either way, whole rows of candidates vanish and several cells drop to one digit.
- Last Remaining Cell technique — Once a row's 1 is placed, the column clues immediately restrict where that column's 9 can sit — chase each crust digit to its last legal cell.
按难度划分的平均解题时间
简单
12 分钟
中等
26 分钟
困难
52 分钟
专家
85 分钟
想要规则、策略和解题步骤的完整指南吗？
如何玩三明治数独 →
相关变体
杀手数独
Both are sum-deduction puzzles at heart — killer's 45 rule and sandwich's crust sums exercise the same arithmetic.
摩天楼数独
Outside clues again, but read as building visibility instead of sums — the same edge-of-grid deduction style.
外部数独
The gentlest outside-clue cousin: border digits simply belong in the nearest three cells, no arithmetic required.
常见问题 — 简单 三明治数独
更多问题？请参阅完整 三明治数独指南.