Experto Sandwich Sudoku
Las pistas fuera de la cuadrícula dan la suma de los dígitos entre el 1 y el 9 en cada fila y columna.
Experto Sandwich Sudoku. Los rompecabezas más difíciles del sitio — intersección de rango de suma y razonamiento de paridad a través de filas y columnas. Sin suposiciones.
27
2
17
12
0
0
3
10
9
27
15
9
24
32
2
0
4
5
3
4
6
9
5
8
3
9
2
2
5
5
8
1
7
2
4
3
1
9
4
1
7
2
7
Qué es Sandwich Sudoku?
Dificultad
★★★★☆
4/5
Tipo de restricción
Pistas exteriores
Valores dados típicos
4–10 clue values
Prom. Resolución (Experto)
85 min
Técnicas de resolución para nivel Experto
| Técnica | Descripción | Nivel |
|---|---|---|
| Clue 0 Means Adjacent 1 and 9 | A sandwich clue of 0 means 1 and 9 are side-by-side with nothing between them. Place this pair immediately. | Principiante |
| Clue 35 Means 1 and 9 at Ends | A clue of 35 = 2+3+4+5+6+7+8. All middle digits are sandwiched, placing 1 and 9 at the two ends of the row/column. | Principiante |
| Position Enumeration | For each clue, enumerate all valid positions of 1 and 9 such that the enclosed digits sum to the clue. Cross-reference with column clues. | Intermedio |
| Sandwich Intersection | Row and column clues intersect at one cell. Combining row positions of 1 and 9 with column positions pinpoints key placements. | Avanzado |
| Digit Forcing from Both Sides | Use clues from both the row and column sides to triangulate the positions of 1 and 9 simultaneously. | Intermedio |
Técnicas para dominar en Experto
- Técnica X-Wing — Expert sandwich grids leave several crust positions ambiguous deep into the solve — X-Wings on 1 and 9 are how those ambiguities are finally cut.
- Swordfish technique — When three rows each hold two possible 9 positions in the same three columns, the Swordfish settles all three sandwiches simultaneously — the classic expert sandwich finish.
Tiempo de Resolución Promedio por Dificultad
Fácil
12 minutos
Medio
26 minutos
Difícil
52 minutos
Experto
85 minutos
¿Quieres una guía completa de reglas, estrategias y pasos de resolución?
Cómo jugar a Sandwich Sudoku →
Variantes relacionadas
Sudoku Killer
Both are sum-deduction puzzles at heart — killer's 45 rule and sandwich's crust sums exercise the same arithmetic.
Skyscraper Sudoku
Outside clues again, but read as building visibility instead of sums — the same edge-of-grid deduction style.
Sudoku Exterior
The gentlest outside-clue cousin: border digits simply belong in the nearest three cells, no arithmetic required.
Preguntas frecuentes — Experto Sandwich Sudoku
¿Más preguntas? Consulta la lista completa Guía de Sandwich Sudoku.