Diagonal Sudoku
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Erros
0/3
Pontuação
-
Tempo
00:00
Progresso0%
Fácil · Diagonal Sudoku
Muda a dificuldade acima ↑
Como jogar Diagonal Sudoku
As regras padrão do Sudoku aplicam-se: coloca 1–9 em cada linha, coluna e bloco 3×3. A regra extra: ambas as diagonais destacadas (↘ e ↙) também devem conter cada dígito exatamente uma vez. A célula central está em ambas as diagonais, tornando-a a célula mais restrita do tabuleiro.
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Ambas as diagonais principais também devem conter 1–9
Diagonal Sudoku Fácil
Diagonal Sudoku Médio
Diagonal Sudoku Difícil
Diagonal Sudoku Especialista
O que é Diagonal Sudoku?
No Diagonal Sudoku, as regras padrão 9×9 aplicam-se — mas com uma restrição extra poderosa: ambas as diagonais principais (de cima à esquerda para baixo à direita, e de cima à direita para baixo à esquerda) devem conter cada uma todos os dígitos de 1 a 9 exatamente uma vez. Esta restrição extra tipicamente torna o puzzle mais fácil de resolver, pois as diagonais atuam como duas unidades extra para eliminação.
À Primeira Vista
| Tipo de restrição | Regiões Extras |
| Pistas típicas | 22–28 |
| Classificação de dificuldade | ★★☆☆☆ 2/5 |
| Tempo médio de resolução — Fácil | 4 min |
| Tempo médio de resolução — Médio | 10 min |
| Tempo médio de resolução — Difícil | 20 min |
| Tempo médio de resolução — Especialista | 40 min |
Como resolver Diagonal Sudoku
| Técnica | O que faz | Nível |
|---|---|---|
| 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. | Avançado |
| Diagonal–Box Interaction | When a digit on a diagonal is confined to one box segment, eliminate it from the rest of that box. | Avançado |
| Diagonal Naked Pairs | If two cells on a diagonal share the same two candidates, eliminate those values from all other diagonal cells. | Avançado |
| Three-Unit Intersection | A cell on the main diagonal also belongs to a row, column, and box — four constraint units simultaneously — maximising elimination power. | Avançado |
Tempos Médios de Resolução
Fácil
4 min
Médio
10 min
Difícil
20 min
Especialista
40 min
Perguntas Frequentes
O que é o Diagonal Sudoku?
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.