Sudoku Palíndromo

8
2
3
1
4
1
5
5
4
9
7
6
7
2
2
1
7
9
9
5
1
8
2
7
9
4
5
6
4
1
2
8
6
2
7
1
9
4
Erros
0/3
Pontuação
-
Tempo
00:00
Novo Jogo
Progresso0%
Fácil · Sudoku Palíndromo Altere a dificuldade acima ↑
Como jogar Palindrome Sudoku
As regras padrão do Sudoku se aplicam. Cada linha cinza é um palíndromo - A sequência de dígitos é lida da mesma forma de ambas as extremidades. Para uma linha de 5 células lendo 3,7,5,7,3, posição 1 = posição 5 e posição 2 = posição 4.
Guia completo →

A sequência de dígitos ao longo de uma linha é lida da mesma forma para frente e para trás

O Que É Sudoku Palíndromo?

Palindrome Sudoku marca linhas na grade cuja sequência de dígitos deve ser um palíndromo — lendo o mesmo em ambas as direções. Se uma linha tem células A-B-C-D-E, então A=E e B=D, enquanto C é o dígito central. Isso cria pares de células que devem compartilhar o mesmo valor, agindo como poderosas restrições de igualdade através da grade.

De Relance

Tipo de restriçãoRestrições de Linha
Pistas típicas20–28
Classificação de dificuldade ★★★☆☆ 3/5
Tempo médio de resolução — Fácil7 min
Tempo médio de resolução — Médio16 min
Tempo médio de resolução — Difícil32 min
Tempo médio de resolução — Especialista58 min

Como Resolver Sudoku Palíndromo

TécnicaO Que Ela FazNível
Mirror Pair Identification In a palindrome of length L, cell i and cell L+1−i must share the same digit. Identify all mirror pairs before solving. Avançado
Centre Cell Freedom The central cell of an odd-length palindrome has no mirror constraint — it is only restricted by standard row/column/box rules. Avançado
Mirror Propagation Once one cell of a mirror pair is determined, immediately set its partner to the same value. Avançado
Multi-Palindrome Intersection If two palindromes share a cell, that cell must satisfy both palindrome relationships simultaneously. Avançado

Tempos Médios de Resolução

Fácil
7 min
Médio
16 min
Difícil
32 min
Especialista
58 min

Perguntas Frequentes

O que é Palindrome Sudoku?
Palindrome Sudoku is a variant where grey lines are drawn across the grid. Every grey line must read the same forwards and backwards — meaning the first cell mirrors the last, the second mirrors the second-to-last, and so on. Standard Sudoku rules apply throughout.
How does the palindrome constraint work?
For any palindrome line, cell positions are mirrored around the centre. On a 6-cell line, cells 1 and 6 hold the same digit, cells 2 and 5 hold the same digit, and cells 3 and 4 hold the same digit. This immediately links distant parts of the grid — placing a digit at one end fixes the digit at the other end.
Can palindrome lines have repeated digits?
Yes, palindrome lines inherently require digit repetition — each mirrored pair shares the same digit. However, standard Sudoku rules still apply, so a repeated digit must be in different rows, columns, and boxes. Palindrome lines are carefully constructed so that this repetition is always consistent with uniqueness rules.
Is Palindrome Sudoku harder than regular Sudoku?
Easy palindrome puzzles are often easier than classic Sudoku because the mirroring immediately links cells across the board, providing extra deductions. Harder difficulties become quite challenging because you must track mirrored constraints across long lines while maintaining standard Sudoku logic.
What is the best first move in Palindrome Sudoku?
Find palindrome lines where one endpoint cell is already constrained by its row, column, or box. Placing a digit there immediately fixes the mirrored cell at the other end. Also look for odd-length lines — the centre cell has no mirror partner, so it's only constrained by standard Sudoku rules.
How long does Palindrome Sudoku take to solve?
Easy puzzles take 8–15 minutes. Medium puzzles run 15–30 minutes. Hard puzzles average 30–60 minutes and expert puzzles often exceed 90 minutes. The difficulty increases sharply when multiple long palindrome lines overlap across the same region of the grid.
Experimente Também
Sudoku Renban
Both put structure on a drawn line's digit set — renban demands a consecutive run where palindromes demand mirror symmetry.
German Whispers
Trades mirrored repetition for forced separation: adjacent line digits must differ by 5 or more.
Sudoku Entre Linhas
Endpoint-anchored lines where position on the line carries meaning, just as it does for palindrome mirror pairs.
Desafio Diário