Logic Masters Deutschland e.V.

This is a trimmed down version of Galaxy Count: Green and Lavender. It still uses spiral galaxies with galaxy types but no fog and no counting circles. Hope you enjoy!

• Normal Sudoku rules apply.
• Each diamond marks the center of a galaxy. Galaxies are orthogonally connected groups of 1 or more cells that are rotationally symmetric around their centers. Each cell is part of a galaxy and all galaxy centers are given. Digits may not repeat in a galaxy.
• Galaxies with lavender diamonds are zipper galaxies. A digit in a zipper galaxy and its rotational counterpart sum to the same number. If the galaxy contains an odd number of cells, that total is equal to the central cell.
• Galaxies with pink diamonds are renban galaxies. Digits in a renban galaxy are contiguous.

Examples

Here are examples for the galaxy types. The first image shows an odd zipper galaxy. The central digit is an 8 so all rotational pairs (17, 26, 35) sum to 8. The second image show an even zipper galaxy where the rotational pairs (15, 24) all sum to 6. The third image shows a renban galaxy. The digits in that galaxy form a contiguous run (45678) without skipping digits when sorted.

Hint

Which galaxy center belongs to R6C5?