Expert Skyscraper Sudoku
Les indices à l'extérieur de la grille comptent combien de bâtiments sont visibles en regardant de ce côté (les bâtiments plus hauts bloquent les plus courts).
Expert Skyscraper Sudoku. Des chaînes de déduction de visibilité à travers les lignes et les colonnes — la variante la plus exigeante du format. Aucune supposition.
3
3
4
6
2
2
3
1
3
6
3
1
2
3
2
3
2
4
1
7
9
4
8
6
5
7
2
5
3
1
8
2
6
5
4
2
3
2
6
3
1
9
2
4
2
3
3
3
3
4
1
3
2
3
2
2
3
3
7
1
Qu'est-ce que Skyscraper Sudoku ?
Difficulté
★★★★☆
4/5
Type de contrainte
Indices extérieurs
Indices typiques
4–10 clue values
Moy. Résolution (Expert)
80 min
Techniques de résolution pour le niveau Expert
| Technique | Description | Niveau |
|---|---|---|
| Clue 1 Forces 9 First | A visibility clue of 1 means the first building from that edge must be a 9. All shorter buildings behind it are hidden. | Débutant |
| Clue 9 Forces Ascending Order | A clue of 9 means all buildings are visible, so digits are in strictly ascending order from that edge: 1, 2, 3, 4, 5, 6, 7, 8, 9. | Débutant |
| Permutation Enumeration | For each clue value V, enumerate all permutations of 1–9 that give exactly V visible buildings. Cross-reference opposite-edge clues. | Intermédiaire |
| 9 Always Visible | The digit 9 is always visible from either edge. The digit 8 is visible only if it appears before any 9 from that edge. | Intermédiaire |
| Multi-Edge Constraint | Combine the clue from one edge with the opposite edge's clue. Both must be simultaneously satisfiable. | Avancé |
Techniques à maîtriser au niveau Expert
- Technique X-Wing — Expert skyscraper grids leave the tall digits ambiguous between exactly two cells per line — the X-Wing on 9 is less a trick here than the intended mechanism.
- Swordfish technique — Opposing clue pairs synchronise 8's possible columns across three rows at a time; the expert endgame usually closes with a Swordfish on 8 or 7.
Temps de résolution moyen par difficulté
Facile
12 min
Moyen
25 min
Difficile
50 min
Expert
80 min
Envie d'un guide complet des règles, stratégies et étapes de résolution ?
Comment jouer à Skyscraper Sudoku →
Variantes connexes
Sudoku Extérieur
Both decode digits written around the border — placement windows here, visibility counts there.
Sandwich Sudoku
Another grid solved from the margins, swapping visibility logic for sums between the 1 and the 9.
Sudoku Little Killer
Outside clues turned diagonal: arrows fire sum totals across the grid instead of counting buildings down a line.
Foire aux questions — Expert Sudoku Skyscraper
Plus de questions ? Voir la Guide du Skyscraper Sudoku.