JAPANESE CROSSWORD PUZZLE

Here, friends, is a traditional SUDOKU puzzle, which is often called the Japanese Crossword Puzzle. Three game options: easy, medium and hard-take into account the degree of preparation of any player: from beginner to expert. The goal of the game is to solve a crossword puzzle by filling each of its cells with a certain number from 1 to 9.

There are quite a few techniques for solving Sudoku, but the rules remain unchanged from version to version. Each small square, large row, and column must form a continuous number series, i.e. include all numbers from one to nine, each of which must be unique (not repeated). For example, there can't be two threes, say, or sevens in one big row. No replays!

Actually, that's all the rules. The time is indicated for reference and does not limit the game. Incorrect attempts are crossed out with a red cross, and correctly placed numbers are circled in green.