Wednesday, August 3, 2016

Grille de la semaine #169

Again, this one is not too easy; just as last week's puzzle, it appeared in the third and last round of the competition, which featured unusual - and mostly harder - variants.

Règles :
Chaque ligne, colonne et région doivent contenir les chiffres de 1 à 9.
La somme de deux chiffres orthogonalement adjacents est toujours strictement inférieure à 15.
Each row, column and region must contain the digits from 1 to 9.
No two orthogonally adjacent digits can have a sum of 15 or more.

#183 Lesser Than 15 Sudoku



  1. 19:56.Hard and very nice use of logic!

  2. Pas évidente au départ, mais au final un régal.
    Merci Bastien.