Logic Masters Deutschland e.V.

This my first non sudoku puzzle and it is a very hard puzzle, but has a logical solve path which I hope you'll find and enjoy

Place the numbers 1 to 9 in every row and column of the 9x9 grid and no digit can repeat in a row or column.

Yin yang: Shade the 9x9 grid and the row and column above and left to it (until the thin edge) using two colours, such that all instances of each colour are orthogonally connected, and no 2x2 area is completely one colour.

Outside clues are Japanese sum clues. "?" is a stand in for any digit 0-9, but for a double digit number, the first digit may not be 0.

The colour that a cell has in the outside row or column indicates that the Japanese sums of that row or column will be for the cells of the same colour than the cell outside the grid. (if r1c0 is green, then the js in r1 will be for the green cells)

Outside the grid, "..." denotes an arbitrary number of Japanese sum clues. This could be zero, one, or multiple.

In cages numbers must sum to the clue in the top left corner and numbers may not repeat. (You can have 2 digit numbers that have a digit in common, a cage with 33 is valid, a cage with a 2 and 25 is also valid). Odd means that the sum of the numbers in it is odd. A jsum cage with no value means, it can be a 1 digit number or 2 digit number.

Solve on penpa+