Leetcode Problem 2056. Number of Valid Move Combinations On Chessboard

2056. Number of Valid Move Combinations On Chessboard

Leetcode Solutions

Brute Force with Pruning

  1. Define a recursive function dfs that takes the current piece index, its possible moves, and the current positions of all pieces.
  2. If the current piece index is equal to the number of pieces, increment the valid combination count.
  3. For each possible move of the current piece, simulate the move and check for collisions with other pieces.
  4. If no collision is detected, recursively call dfs for the next piece.
  5. Backtrack to explore other possible moves for the current piece.
  6. Return the count of valid move combinations after exploring all possibilities.
UML Thumbnail

Bitmask and DFS

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