Logic Masters Deutschland e.V.

Normal Sudoku rules apply. Each row, column, and 3x3 box contains each number from 1 to 9 exactly once.

Disjoint Sudoku rules apply. Cells that appear in the same position relative to their default regions must not contain the same number.

Arrow Sudoku rules apply. Digits along an arrow in the grid must sum to the digit in its circle. Digits may repeat along the arrows.

Orthogonally adjacent cells with the sum of 5 are marked with a V, and with the sum of 10 are marked with an X. Not all Vs and Xs are given, a.k.a. NO negative constraint.

Additionally the heart is broken into two pieces: one half has a sum of 85 and the other half has a sum of 77.

The puzzle is also available online.