If a players flag falls, and he can be mated anyhow, then he loses. Otherwise it is a draw.

In standard and rapid time controls, but not in blitz, a player can claim draw before his flag falls, if his opponent "can not make progress by normal means".

All sites declare draw in the simple cases like K against K(B or N). Lichess also includes some more advanced cases like K(Q)* against KN and K(R)* against KB.

No site detects all cases where mate is not possible. It is an unsolved technical challenge. All non-trivial cases where mate is not possible will incorrectly be counted as loss in online chess. That's life.

chess.com, ICC and less frequented sites always declare draw when the player has just knight or bishop. On ICC, if a forced mate was possible, one can later claim to get the points, but not the win.

Lichess, chess24 and schach.de apply the above FIDE blitz rules. The above chess.com example would be a loss for white on these sites.

If a players flag falls, and he can be mated anyhow, then he loses. Otherwise it is a draw.

In standard and rapid time controls, but not in blitz, a player can claim draw before his flag falls, if his opponent "can not make progress by normal means".

All sites declare draw in the simple cases like K against K(B or N). Lichess also includes some more advanced cases like K(Q)* against KN and K(R)* against KB.

No site detects all cases where mate is not possible. It is an unsolved technical challenge. All non-trivial cases where mate is not possible will incorrectly be counted as loss in online chess. That's life.

chess.com, ICC and less frequented sites always declare draw when the player has just knight or bishop. On ICC, if a forced mate was possible, one can later claim to get the points, but not the win.

Lichess, chess24 and schach.de apply the above FIDE blitz rules. The above chess.com example would be a loss for white on these sites.

If a players flag falls, and he can be mated anyhow, then he loses. Otherwise it is a draw.

In standard and rapid time controls, but not in blitz, a player can claim draw before his flag falls, if his opponent "can not make progress by normal means".

All sites declare draw in the simple cases like K against K(B or N). Lichess also includes some more advanced cases like K(Q)* against KN and K(R)* against KB.

No site detects all cases where mate is not possible. It is an unsolved technical challenge. All non-trivial cases where mate is not possible will incorrectly be counted as loss in online chess. That's life.

chess.com, ICC and less frequented sites always declare draw when the player has just knight or bishop. On ICC, if a forced mate was possible, one can later claim to get the points, but not the win.

Lichess, chess24 and schach.de apply the above FIDE blitz rules. The above chess.com example would be a loss for white on these sites.

If a players flag falls, and he can be mated anyhow, then he loses. Otherwise it is a draw.

In standard and rapid time controls, but not in blitz, a player can claim draw before his flag falls, if his opponent "can not make progress by normal means".

All sites declare draw in the simple cases like K against K(B or N). Lichess also includes some more advanced cases like K(Q)* against KN and K(R)* against KB.

No site detects all cases where mate is not possible. It is an unsolved technical challenge. All non-trivial cases where mate is not possible will incorrectly be counted as loss in online chess. That's life.

chess.com, ICC and less frequented sites always declare draw when the player has just knight or bishop. On ICC, if a forced mate was possible, one can later claim to get the points, but not the win.

Lichess, chess24 and schach.de apply the above FIDE blitz rules. The above chess.com example would be a loss for white on these sites.