Sudoku Impar/Par
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Errores
0/3
Puntuación
-
Tiempo
00:00
Progreso0%
Impar
Par
Fácil · Sudoku Par/Impar
Cambia la dificultad arriba ↑
Cómo jugar al Sudoku Par/Impar
Se aplican las reglas estándar del Sudoku. Las celdas con borde púrpura (impar) deben contener 1, 3, 5, 7 o 9. Las celdas amarillas (par) deben contener 2, 4, 6 u 8. Un dígito de paridad incorrecta cuenta como error.
Guía completa →
Las celdas sombreadas deben contener dígitos impares; los círculos deben contener dígitos pares
Sudoku Impar / Par Fácil
Sudoku Impar / Par Medio
Sudoku Impar / Par Difícil
Sudoku Impar / Par Experto
Qué es Sudoku Impar / Par?
Odd/Even Sudoku marca ciertas celdas como impares (a menudo sombreadas en gris) o pares (a menudo con círculo). Las celdas impares deben contener uno de 1, 3, 5, 7, 9 y las celdas pares deben contener uno de 2, 4, 6, 8. Esto reduce a la mitad el conjunto de candidatos para las celdas marcadas de inmediato, creando restricciones poderosas sin proporcionar dígitos específicos.
De un Vistazo
| Tipo de restricción | Relaciones de Celdas |
| Valores dados típicos | 20–26 |
| Valoración de dificultad | ★★★☆☆ 3/5 |
| Tiempo de resolución prom. — Fácil | 6 min |
| Tiempo de resolución prom. — Medio | 14 min |
| Tiempo de resolución prom. — Difícil | 28 min |
| Tiempo de resolución prom. — Experto | 50 min |
Cómo resolver Sudoku Impar / Par
| Técnica | Qué hace | Nivel |
|---|---|---|
| Immediate Candidate Halving | Marked cells instantly reduce to 5 odd candidates (1,3,5,7,9) or 4 even candidates (2,4,6,8). Apply this before any other technique. | Avanzado |
| Parity Counting per Box | Count how many odd-marked and even-marked cells are in each box to verify the digit distribution is achievable. | Avanzado |
| Parity-Chain Elimination | If a row must contain exactly four even digits, and three positions are already even-marked, the fourth must come from the remaining unmarked cells. | Avanzado |
| Parity X-Wing | When parity restricts a digit to exactly two rows and two columns, form a parity-based X-Wing for cross-elimination. | Avanzado |
Tiempos de Resolución Promedio
Fácil
6 minutos
Medio
14 minutos
Difícil
28 minutos
Experto
50 minutos
Preguntas frecuentes
¿Qué es Odd/Even Sudoku?
Odd/Even Sudoku is a variant where some cells are shaded to indicate whether they must hold an odd or even digit. Purple-ringed cells must hold odd digits (1, 3, 5, 7, or 9). Yellow-shaded cells must hold even digits (2, 4, 6, or 8). Standard Sudoku rules apply to all cells.
What is parity in Sudoku?
Parity refers to whether a number is odd or even. In Odd/Even Sudoku, you can immediately halve the candidate list for any shaded cell. An odd cell can only hold 1, 3, 5, 7, or 9. An even cell can only hold 2, 4, 6, or 8. Combined with row, column, and box constraints, parity constraints make early placements much faster.
How do parity markings help solving?
Shaded cells eliminate half the digit range immediately. If a row already contains three odd digits and has an odd-marked cell remaining, that cell is heavily constrained. Counting odd vs even cells in each row, column, and box often reveals hidden singles that would be invisible without the parity markings.
Is Odd/Even Sudoku harder than regular Sudoku?
At easy and medium difficulty, it is comparable to or easier than classic Sudoku because parity markings provide immediate candidate reductions. Hard and expert Odd/Even puzzles use sparser markings and fewer given digits, making them comparable in difficulty to hard classic Sudoku.
What is the best first move in Odd/Even Sudoku?
Scan each row, column, and box and count how many odd and even slots remain versus how many odd and even digits are still unplaced. When only one cell in a row can hold an odd digit, that cell must contain an odd digit from the remaining candidates — this is a parity-based hidden single.
How long does Odd/Even Sudoku take to solve?
Easy puzzles take 5–15 minutes. Medium puzzles run 15–30 minutes. Hard puzzles average 30–60 minutes and expert puzzles can take 60–90 minutes. Parity-based hidden singles are the primary acceleration technique that distinguishes fast solvers.