I think just declaring any position where a side can't legally move but is not in a check, a draw, is the most logically consistent. Splitting hairs between what types of checks, checkmates, and stalemates are wins, 3/4 wins, or draws makes less sense than the current stalemate rule.
Stalemate is kind of half-checkmate right? The victim is mated (with no legal moves) but there's no check to call it a day. That's why I'm arguing that it should be a half-win (0.75). That's just my logic.
If this rule is added, then games could be more decisive and tournament rankings could be more precise. Also, it'll have a more satisfying effect than just the 1/2-1/2 of a draw. Just my thoughts.
But that's just it, it's not always the case. It can just mean that one (or even both sides) have no legal piece move. That's not the same as losing the game. It just means the game can't continue beyond that. You can have positions where neither side can move regardless of whose move it is, like this one:
I think just declaring any position where a side can't legally move but is not in a check, a draw, is the most logically consistent. Splitting hairs between what types of checks, checkmates, and stalemates are wins, 3/4 wins, or draws makes less sense than the current stalemate rule.
Also, note in that smothered mate example, and in my deadlock one, some would claim a lack of legal moves should result in a loss by forfeit (even if the kings couldn't be taken had they had free squares to move to). In such a case, does this game end in insufficient mating material, or a "win" by stalemate?
Black has no legal moves, but he isn't required to make legal moves once an insufficient mating material position is reached (since the game is already over). Or..is it really insufficient mating material at all if we now include stalemate positions as winning. You see however you try to justify stalemate not being a draw, you end up with contradictions/circular reasoning that ends up being more troublesome than the current stalemate = draw rule itself.
You bring up interesting points.
First, it's not a loss by forfeit. Black isn't not making a move because he just isn't, it's because he can't. It has to be stalemate or checkmate.
Also, as long as one player has sufficient material, the game will go on. And if one player magically stalemates himself with his own material, he is simply stalemated and will get 0.25.
Simple.