A draw can be established by the position, the game history, or the players’ agreement. Stalemate and dead positions end the game immediately. Under FIDE competition rules, threefold repetition and the 50-move threshold allow a correct claim; fivefold repetition and the 75-move threshold produce automatic draws, with checkmate taking precedence over the final 75-move threshold.
A dead position is one where neither player can checkmate through any possible legal sequence. This is different from a position that cannot be won against accurate defense. A single board or FEN cannot prove earlier repetitions.
Online platforms may automate claims or use different procedures. Record the platform or event when checking a result, and use the relevant rules rather than assuming every draw is handled automatically.