Logic Masters Deutschland e.V.

Rules:

1. (Hyperbolic Sudoku) Fill the grid with 4 selected digits from 1-9 so that no digits repeat in any row or box. The solver must deduce which 4 digits are selected. A "box" is a 2x2 square and a "row" is 4-cells-long and slightly folded at box edges.

2. (Balanced Sum) Every set of 5 rotationally symmetric cells sum to the same number.

3. Digits on an arrow sum to the digit in the arrow's circle.

Play on Penpa Note: When you play on penpa, the arrows are "deformed". Please switch to "Number" mode and turn on "Draw on Edges", and fill all digits in the right middle of cells in order to trigger the solution check. Enjoy!

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If you like my puzzle, please feel free to comment, give advice, or try more of my hyperbolic sudoku!

Upside Down

Counting Stars