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Motifs Diagonaux et d'Angle
Règles s'appliquant aux diagonales ou cellules d'angle de la matrice.
Apprendre
Règles s'appliquant aux diagonales ou cellules d'angle de la matrice.
Beyond rows and columns, matrices can have diagonal rules. The main diagonal runs from top-left to bottom-right; the anti-diagonal runs from top-right to bottom-left. Corner rules specifically match the four corner cells. These patterns are typically found in harder puzzles and require looking beyond the obvious row/column structure.
Diagonal: cells[0,0], cells[1,1], cells[2,2] share attribute. Corners: cells at (0,0), (0,2), (2,0), (2,2) share attribute.
- Diagonal shape: Top-left, center, bottom-right all have same shape
- Anti-diagonal fill: Top-right, center, bottom-left all have same fill
- Corners same: All four corner cells have matching shapes
Comment le reconnaître
- After checking rows and columns, examine the diagonals
- Compare the four corner cells for matching attributes
- Diagonal rules often combine with row/column rules
- These patterns appear in harder difficulty levels
Erreurs fréquentes
- Only checking rows and columns, missing diagonal patterns
- Confusing main diagonal with anti-diagonal
- Forgetting that diagonal rules can apply to any attribute
Résolution étape par étape
Dans une matrice 3x3, toutes les cellules de la diagonale principale partagent la même forme. Les cellules 1 et 5 contiennent des cercles. La cellule 9 est manquante. Quelle forme y va ?
- Identifier les cellules de la diagonale principale
- Vérifier le motif diagonal : la cellule 1 a un cercle
- Confirmer le motif : la cellule 5 a aussi un cercle
- Appliquer la règle diagonale à la cellule 9
Réponse: Cercle