X-Sudoku Diário

Mais Puzzles Diários

Experimente uma variante diferente de sudoku diário. Cada variante usa o mesmo sistema — um novo puzzle por dia, igual para todos, com séries e partilha.

X-Sudoku Diário: Um Puzzle Diagonal Gratuito Todos os Dias

Bem-vindo ao X-Sudoku Diário — um puzzle de restrições diagonais completamente novo que aparece todos os dias à meia-noite. Ao contrário do nosso modo ilimitado de X-Sudoku, a versão diária oferece-lhe um puzzle por dia idêntico para todos os jogadores do mundo. É a mesma lógica de Sudoku viciante que adora, mais duas regras extra — ambas as diagonais principais também devem conter os dígitos 1–9 — num desafio diário partilhado onde pode comparar tempos, construir séries e partilhar resultados sem spoilers.

X-Sudoku — also known as Diagonal Sudoku or Sudoku X — adds a deceptively simple twist to the classic 9×9 puzzle. The two main diagonals of the grid (forming an "X" shape) become additional constraint zones. Our daily version follows the newspaper-puzzle-column tradition: one puzzle per day, getting progressively harder through the week, with modern features like streak tracking, a full archive and instant sharing.

✖️ O que Torna o X-Sudoku Diário Especial?

The Daily X-Sudoku merges the social hook of a shared daily puzzle (think Wordle) with the elegant extra dimension of X-Sudoku's diagonal constraints. Every solver faces the same grid, the same givens, the same solution — so comparisons are meaningful when you share your results.

The diagonals act as two additional "hidden groups" that intersect with every row, column and box along their path. Cells at the centre of the grid (especially r5c5, where both diagonals cross) become incredibly constrained. This is what makes X-Sudoku feel tighter and more logically satisfying than standard Sudoku — fewer possibilities per cell, but each deduction carries more weight.

📋 Regras do X-Sudoku Diário

1. Row rule — Every row must contain the digits 1–9 exactly once.
2. Column rule — Every column must contain the digits 1–9 exactly once.
3. Box rule — Every 3×3 box must contain the digits 1–9 exactly once.
4. Diagonal rule — Both main diagonals (top-left to bottom-right and top-right to bottom-left) must contain the digits 1–9 exactly once.

Rules 1–3 are identical to classic Sudoku. Rule 4 is the "X" twist — just two extra constraint lines, but they change the entire solving experience.

⭐ Progressão de Dificuldade Semanal

• Monday & Tuesday — Easy — More given digits, straightforward diagonal logic. Great for beginners.
• Wednesday & Thursday — Medium — Fewer givens; you'll need to leverage the diagonals heavily.
• Friday & Saturday — Hard — Sparse clues, advanced techniques like X-Wing and Swordfish along diagonals.
• Sunday — Expert — Minimal givens; every constraint line counts.

🧠 Estratégias Chave para o X-Sudoku

• Diagonal scanning — Treat each diagonal like a tenth "row." Scan for missing digits and note pencil marks along the diagonal.
• Diagonal–box intersection — The diagonals pass through several boxes. When a digit is locked to certain cells along a diagonal within a box, it can be eliminated from other cells in that box.
• Centre-cell leverage — The centre cell (r5c5) belongs to five groups. Unique to X-Sudoku, it's the most constrained cell on the board.
• Corner-cell logic — Corner cells (r1c1, r1c9, r9c1, r9c9) belong to a row, a column, a box and a diagonal — four constraint groups.
• Diagonal X-Wing — An X-Wing pattern can form along a diagonal and a row/column, creating powerful eliminations unique to X-Sudoku.

📊 Séries e Partilha

Your streak counts the consecutive days you've completed the daily X-Sudoku. Solve today's puzzle and the streak grows. Miss a day and it resets, but your best streak is always recorded. Press Share after solving to copy a spoiler-free result card.

📅 O Arquivo de Puzzles

Missed a day? Use the calendar below the puzzle to select a past date and replay that day's X-Sudoku. Archive puzzles don't affect your current streak.

🖨️ Quer X-Sudoku Ilimitado ou Imprimível?

If one puzzle a day isn't enough, generate unlimited puzzles on our X-Sudoku page. Prefer paper? Download free sheets from our printable sudoku section.