3 ms·
Successful moves don’t always commute. Black has just moved his pawn from g7 to g5. White submits what he thinks is an en passant capture, fxg6. Black submits a
by squirrel 2y ago
Successful moves don’t always commute. Black has just moved his pawn from g7 to g5. White submits what he thinks is an en passant capture, fxg6. Black submits a knight move, Ng6. One order removes a Black pawn, the other a Black knight.
- esquivalience 2y agoThis interested me enough to convince me to click through to the article itself. Is your observation allayed by this rule? > Rule 2: a. Moves are tried in both orders, and only moves that are legal in both orders are merged. b. If both moves are legal in both orders but a different game state is reached in each order, neither move is merged.
- rawling 2y agoGP is in response to > All of these scenarios illustrate rule 2a. Rule 2b is in fact irrelevant for chess, because successful moves always commute. in the article.
- esquivalience 2y agoThanks, I overlooked that
- rawling 2y agoApparently you can notate "fxg6" as "fxg6 e.p.", so enforcing that would fix this?