ashapochka
diff --git a/‎DIRECTORY.md‎
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diff --git a/‎matrix/matrix_based_game.py‎
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@@ -794,6 +794,7 @@
   * [Cramers Rule 2X2](matrix/cramers_rule_2x2.py)
   * [Inverse Of Matrix](matrix/inverse_of_matrix.py)
   * [Largest Square Area In Matrix](matrix/largest_square_area_in_matrix.py)
+  * [Matrix Based Game](matrix/matrix_based_game.py)
   * [Matrix Class](matrix/matrix_class.py)
   * [Matrix Equalization](matrix/matrix_equalization.py)
   * [Matrix Multiplication Recursion](matrix/matrix_multiplication_recursion.py)
 
@@ -0,0 +1,284 @@
+"""
+Matrix-Based Game Script
+=========================
+This script implements a matrix-based game where players interact with a grid of
+elements. The primary goals are to:
+- Identify connected elements of the same type from a selected position.
+- Remove those elements, adjust the matrix by simulating gravity, and reorganize empty
+  columns.
+- Calculate and display the score based on the number of elements removed in each move.
+
+Functions:
+-----------
+1. `find_repeat`: Finds all connected elements of the same type.
+2. `increment_score`: Calculates the score for a given move.
+3. `move_x`: Simulates gravity in a column.
+4. `move_y`: Reorganizes the matrix by shifting columns leftward when a column becomes
+    empty.
+5. `play`: Executes a single move, updating the matrix and returning the score.
+
+Input Format:
+--------------
+1. Matrix size (`lines`): Integer specifying the size of the matrix (N x N).
+2. Matrix content (`matrix`): Rows of the matrix, each consisting of characters.
+3. Number of moves (`movs`): Integer indicating the number of moves.
+4. List of moves (`movements`): A comma-separated string of coordinates for each move.
+
+(0,0) position starts from first left column to last right, and below row to up row
+
+
+Example Input:
+---------------
+4
+RRBG
+RBBG
+YYGG
+XYGG
+2
+0 1,1 1
+
+Example (0,0) = X
+
+Output:
+--------
+The script outputs the total score after processing all moves.
+
+Usage:
+-------
+Run the script and provide the required inputs as prompted.
+
+"""
+
+
+def validate_matrix_size(size: int) -> None:
+    """
+    >>> validate_matrix_size(-1)
+    Traceback (most recent call last):
+        ...
+    ValueError: Matrix size must be a positive integer.
+    """
+    if not isinstance(size, int) or size <= 0:
+        raise ValueError("Matrix size must be a positive integer.")
+
+
+def validate_matrix_content(matrix: list[str], size: int) -> None:
+    """
+    Validates that the number of elements in the matrix matches the given size.
+
+    >>> validate_matrix_content(['aaaa', 'aaaa', 'aaaa', 'aaaa'], 3)
+    Traceback (most recent call last):
+        ...
+    ValueError: The matrix dont match with size.
+    >>> validate_matrix_content(['aa%', 'aaa', 'aaa'], 3)
+    Traceback (most recent call last):
+        ...
+    ValueError: Matrix rows can only contain letters and numbers.
+    >>> validate_matrix_content(['aaa', 'aaa', 'aaaa'], 3)
+    Traceback (most recent call last):
+        ...
+    ValueError: Each row in the matrix must have exactly 3 characters.
+    """
+    print(matrix)
+    if len(matrix) != size:
+        raise ValueError("The matrix dont match with size.")
+    for row in matrix:
+        if len(row) != size:
+            msg = f"Each row in the matrix must have exactly {size} characters."
+            raise ValueError(msg)
+        if not all(char.isalnum() for char in row):
+            raise ValueError("Matrix rows can only contain letters and numbers.")
+
+
+def validate_moves(moves: list[tuple[int, int]], size: int) -> None:
+    """
+    >>> validate_moves([(1, 2), (-1, 0)], 3)
+    Traceback (most recent call last):
+        ...
+    ValueError: Move is out of bounds for a matrix.
+    """
+    for move in moves:
+        x, y = move
+        if not (0 <= x < size and 0 <= y < size):
+            raise ValueError("Move is out of bounds for a matrix.")
+
+
+def parse_moves(input_str: str) -> list[tuple[int, int]]:
+    """
+    >>> parse_moves("0 1, 1 1")
+    [(0, 1), (1, 1)]
+    >>> parse_moves("0 1, 1 1, 2")
+    Traceback (most recent call last):
+        ...
+    ValueError: Each move must have exactly two numbers.
+    >>> parse_moves("0 1, 1 1, 2 4 5 6")
+    Traceback (most recent call last):
+        ...
+    ValueError: Each move must have exactly two numbers.
+    """
+    moves = []
+    for pair in input_str.split(","):
+        parts = pair.strip().split()
+        if len(parts) != 2:
+            raise ValueError("Each move must have exactly two numbers.")
+        x, y = map(int, parts)
+        moves.append((x, y))
+    return moves
+
+
+def find_repeat(
+    matrix_g: list[list[str]], row: int, column: int, size: int
+) -> set[tuple[int, int]]:
+    """
+    Finds all connected elements of the same type from a given position.
+
+    >>> find_repeat([['A', 'B', 'A'], ['A', 'B', 'A'], ['A', 'A', 'A']], 0, 0, 3)
+    {(1, 2), (2, 1), (0, 0), (2, 0), (0, 2), (2, 2), (1, 0)}
+    >>> find_repeat([['-', '-', '-'], ['-', '-', '-'], ['-', '-', '-']], 1, 1, 3)
+    set()
+    """
+
+    column = size - 1 - column
+    visited = set()
+    repeated = set()
+
+    if (color := matrix_g[column][row]) != "-":
+
+        def dfs(row_n: int, column_n: int) -> None:
+            if row_n < 0 or row_n >= size or column_n < 0 or column_n >= size:
+                return
+            if (row_n, column_n) in visited:
+                return
+            visited.add((row_n, column_n))
+            if matrix_g[row_n][column_n] == color:
+                repeated.add((row_n, column_n))
+                dfs(row_n - 1, column_n)
+                dfs(row_n + 1, column_n)
+                dfs(row_n, column_n - 1)
+                dfs(row_n, column_n + 1)
+
+        dfs(column, row)
+
+    return repeated
+
+
+def increment_score(count: int) -> int:
+    """
+    Calculates the score for a move based on the number of elements removed.
+
+    >>> increment_score(3)
+    6
+    >>> increment_score(0)
+    0
+    """
+    return int(count * (count + 1) / 2)
+
+
+def move_x(matrix_g: list[list[str]], column: int, size: int) -> list[list[str]]:
+    """
+    Simulates gravity in a specific column.
+
+    >>> move_x([['-', 'A'], ['-', '-'], ['-', 'C']], 1, 2)
+    [['-', '-'], ['-', 'A'], ['-', 'C']]
+    """
+
+    new_list = []
+
+    for row in range(size):
+        if matrix_g[row][column] != "-":
+            new_list.append(matrix_g[row][column])
+        else:
+            new_list.insert(0, matrix_g[row][column])
+    for row in range(size):
+        matrix_g[row][column] = new_list[row]
+    return matrix_g
+
+
+def move_y(matrix_g: list[list[str]], size: int) -> list[list[str]]:
+    """
+    Shifts all columns leftward when an entire column becomes empty.
+
+    >>> move_y([['-', 'A'], ['-', '-'], ['-', 'C']], 2)
+    [['A', '-'], ['-', '-'], ['-', 'C']]
+    """
+
+    empty_columns = []
+
+    for column in range(size - 1, -1, -1):
+        if all(matrix_g[row][column] == "-" for row in range(size)):
+            empty_columns.append(column)
+
+    for column in empty_columns:
+        for col in range(column + 1, size):
+            for row in range(size):
+                matrix_g[row][col - 1] = matrix_g[row][col]
+        for row in range(size):
+            matrix_g[row][-1] = "-"
+
+    return matrix_g
+
+
+def play(
+    matrix_g: list[list[str]], pos_x: int, pos_y: int, size: int
+) -> tuple[list[list[str]], int]:
+    """
+    Processes a single move, updating the matrix and calculating the score.
+
+    >>> play([['R', 'G'], ['R', 'G']], 0, 0, 2)
+    ([['G', '-'], ['G', '-']], 3)
+    """
+
+    same_colors = find_repeat(matrix_g, pos_x, pos_y, size)
+
+    if len(same_colors) != 0:
+        for pos in same_colors:
+            matrix_g[pos[0]][pos[1]] = "-"
+        for column in range(size):
+            matrix_g = move_x(matrix_g, column, size)
+
+        matrix_g = move_y(matrix_g, size)
+
+    return (matrix_g, increment_score(len(same_colors)))
+
+
+def process_game(size: int, matrix: list[str], moves: list[tuple[int, int]]) -> int:
+    """Processes the game logic for the given matrix and moves.
+
+    Args:
+        size (int): Size of the game board.
+        matrix (List[str]): Initial game matrix.
+        moves (List[Tuple[int, int]]): List of moves as (x, y) coordinates.
+
+    Returns:
+        int: The total score obtained.
+    >>> process_game(3, ['aaa', 'bbb', 'ccc'], [(0, 0)])
+    6
+    """
+
+    game_matrix = [list(row) for row in matrix]
+    total_score = 0
+
+    for move in moves:
+        pos_x, pos_y = move
+        game_matrix, score = play(game_matrix, pos_x, pos_y, size)
+        total_score += score
+
+    return total_score
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod(verbose=True)
+    try:
+        size = int(input("Enter the size of the matrix: "))
+        validate_matrix_size(size)
+        print(f"Enter the {size} rows of the matrix:")
+        matrix = [input(f"Row {i+1}: ") for i in range(size)]
+        validate_matrix_content(matrix, size)
+        moves_input = input("Enter the moves (e.g., '0 0, 1 1'): ")
+        moves = parse_moves(moves_input)
+        validate_moves(moves, size)
+        score = process_game(size, matrix, moves)
+        print(f"Total score: {score}")
+    except ValueError as e:
+        print(f"{e}")