Building a "Mate-in-One" Chess Puzzle Solver from Scratch (opens in new tab)

Chess puzzles are incredibly addictive, but have you ever wondered how software instantly verifies if a move is a genuine checkmate? While full chess engines like Stockfish look dozens of moves ahead using complex neural networks and alpha-beta pruning, writing an algorithm to detect a simple Mate-in-One is actually a fantastic, approachable exercise in graph theory and data modeling. Here is a look at the exact step-by-step logic required to build a lightweight, fast mate-in-one puzzle detec...