Tic-Tac-Tournament

(Eingestellt am 2. April 2024, 03:14 Uhr von shadow-nexus)

Tic-Tac-Tournament

This Sudoku grid was used to play 9 games of Tic-Tac-Toe.
O-symbols act as circle clues and are also subject to a more local restriction.
Can you figure out how many games ended in victory, and who won?

Rules

Normal Sudoku rules apply.
Each diamond is a quadruple clue that shows digits that must be placed into some of the 4 cells surrounding it.

Each cell apart from the caged cell also contains a symbol (X or O).
In each 3x3 box: normal Tic-Tac-Toe rules apply.
Starting players alternate between boxes (i.e., one player starts in boxes 1/3/5/7/9, the other player starts in boxes 2/4/6/8).
In each 3x3 box: adjacent "O" contain digits that differ by 1 or that are in a 1:2 ratio.
A digit in a "O" counts how many times that digit occurs in any "O" in the 9x9 grid.

The caged cell counts the number of Tic-Tac-Toe games ending in victory (regardless of which player won).
The players will never skip an opportunity to win, therefore there will never be more than one winning 3-symbol line per game.

FYI:
In a game of Tic-Tac-Toe, 2 players take turns marking their symbol ("X" or "O" respectively) into one of the remaining blank cells of a 3x3 grid.
The game ends in victory if any player manages to line up 3 of their own symbols in a row/column/diagonal.
The game ends in a draw if all cells are filled without lining up 3 of the same symbols.

Solve online

CtC / SudokuPad