Grille de la semaine #161 [League of Extraordinary Ladies and Gentlemen #102]

Apologies for not publishing a puzzle last week; I was ill and could not find the energy to make one. Things are back to normal, and this week you get a tough Group Sum Sudoku that should keep you busy for a little while. Enjoy!

Règles :

Chaque ligne, colonne et région doivent contenir les chiffres de 1 à 9.
Les indices correspondent à la somme des chiffres dans les quatre cases chevauchées par l'indice concerné.

°°°°°°°°°°°°°°°°°°°°

Each row, column and region must contain the digits from 1 to 9.
The clues correspond to the sum of the digits in the four cells that the considered circle overlaps.

#175 Group Sum Sudoku