What is 50-move rule?

The fifty move rule is a rule in chess that states if 50 moves are played without any pieces being captured or any pawn moves, the game automatically ends in a draw.
For future reference, when their are less common rulings in your games, chess.com will place a little "i" next to the move it occurred on to offer further explanation. This will also occur during other situations like en passant, etc.

The fifty move rule is a rule in chess that states if 50 moves are played without any pieces being captured or any pawn moves, the game automatically ends in a draw.
For future reference, when their are less common rulings in your games, chess.com will place a little "i" next to the move it occurred on to offer further explanation. This will also occur during other situations like en passant, etc.
Yep, but for one condition: 50-move rule denies captures, pawn moves, and checks, so the game will end up on a draw.

The fifty move rule is a rule in chess that states if 50 moves are played without any pieces being captured or any pawn moves, the game automatically ends in a draw.
For future reference, when their are less common rulings in your games, chess.com will place a little "i" next to the move it occurred on to offer further explanation. This will also occur during other situations like en passant, etc.
Yep, but for one condition: 50-move rule denies captures, pawn moves, and checks, so the game will end up on a draw.
Checks do not reset the counter

This rule was actually changed quite a few times. It became 75, then 100, and was finally reverted back to 50. In tournament play, a draw can be claimed after the 50th move, while the 75th move is an automatic draw.
This rule rarely occurs in actual games, due to draws by repetition (itself a rule that is somewhat different in tournament play) being much more common. Generally speaking, the 50-move rule most commonly occurs when a noob has a king and rook left and doesn't know how to mate, or when two noobs are in an endgame position that's obviously a draw and continue to play pointless moves in hopes that the other player blunders or gets flagged.