대각선 스도쿠
1
8
9
6
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9
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1
8
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9
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9
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8
1
7
7
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6
9
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7
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9
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8
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2
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6
대각선 스도쿠 플레이 방법
표준 스도쿠 규칙이 적용됩니다: 모든 행, 열, 3×3 박스에 1–9를 배치하세요. 추가 규칙: 강조 표시된 두 대각선(↘ 및 ↙)도 각 숫자를 정확히 한 번씩 포함해야 합니다. 중앙 셀은 두 대각선에 모두 위치하여 보드에서 가장 제약이 많은 셀입니다.
전체 가이드 →
두 주 대각선도 1~9를 포함해야 합니다
대각선 스도쿠이란 무엇인가요?
Diagonal Sudoku에서는 standard 9×9 rules이 적용되지만 powerful extra constraint이 하나 있습니다: 두 main diagonals (top-left to bottom-right, top-right to bottom-left)은 각각 1부터 9까지의 모든 digit을 exactly once 포함해야 합니다. 이 extra constraint은 diagonals이 elimination을 위한 two extra units으로 작용하므로 일반적으로 puzzle을 더 쉽게 풀 수 있게 합니다.
한눈에
| 제약 유형 | 추가 영역 |
| 일반적인 주어진 숫자 | 22–28 |
| 난이도 등급 | ★★☆☆☆ 2/5 |
| 평균 풀이 시간 — 쉬움 | 4 분 |
| 평균 풀이 시간 — 중급 | 10 분 |
| 평균 풀이 시간 — 어려움 | 20 분 |
| 평균 풀이 시간 — 전문가 | 40 분 |
대각선 스도쿠 푸는 방법
| 기법 | 기능 | 레벨 |
|---|---|---|
| Diagonal as a Unit | Treat each diagonal exactly like a row or column — every digit 1–9 appears exactly once. Standard scanning and counting apply. | 고급 |
| Diagonal–Box Interaction | When a digit on a diagonal is confined to one box segment, eliminate it from the rest of that box. | 고급 |
| Diagonal Naked Pairs | If two cells on a diagonal share the same two candidates, eliminate those values from all other diagonal cells. | 고급 |
| Three-Unit Intersection | A cell on the main diagonal also belongs to a row, column, and box — four constraint units simultaneously — maximising elimination power. | 고급 |
평균 풀이 시간
쉬움
4 분
중급
10 분
어려움
20 분
전문가
40 분
자주 묻는 질문
Diagonal Sudoku란 무엇인가요?
Diagonal Sudoku adds two extra constraints on top of standard Sudoku: both main diagonals of the 9×9 grid must each contain the digits 1–9 exactly once. This means every cell on either diagonal belongs to four uniqueness groups simultaneously: its row, column, box, and diagonal.
Which cells are on the diagonals?
The main diagonals run from the top-left corner to the bottom-right corner, and from the top-right corner to the bottom-left corner. Together they cover 17 cells (the centre cell is on both). Any cell at position (r, c) is on a diagonal if r equals c or if r + c equals 10 (using 1-based numbering).
How does the diagonal constraint help solving?
Diagonal cells carry four constraints instead of the usual three, making them the most restricted cells on the board. Whenever you place a digit anywhere on a diagonal, it eliminates that digit from the entire row, column, box, and the diagonal simultaneously — often triggering a cascade of placements.
Is Diagonal Sudoku harder than regular Sudoku?
At easy difficulty, Diagonal Sudoku is actually easier than equivalent classic Sudoku because the extra constraints eliminate more candidates immediately. At hard and expert levels, the diagonal interactions create subtler deductions that experienced players find more challenging to spot.
Can I solve Diagonal Sudoku using standard techniques?
Yes — all standard Sudoku techniques (naked pairs, hidden singles, pointing pairs, X-Wings, etc.) apply. You simply treat each diagonal as an additional house. The most important habit is scanning both diagonals after every placement, the same way you scan rows, columns, and boxes.
How long does Diagonal Sudoku take to solve?
Easy puzzles take 5–12 minutes — often faster than equivalent classic puzzles because of the extra constraints. Medium puzzles run 12–25 minutes. Hard and expert puzzles can take 30–70 minutes depending on how heavily the diagonal interactions need to be exploited.