Kind of a sour-grapes complaint. I lost 13 puzzle rating points in part because for this puzzle, I underestimated the recommended move 1. Ba3 since I thought ...O-O was a good reply. (An engine reports the game would then be even.) Using your analysis tool, it became evident that because of hidden game history, ...O-O was not legal, and White ends up with a 3-point edge.
I guess Ba3 is the best move anyway, but this puzzle is misleading -- unless there's some way to discover if curious when tackling it whether castling for Black is legal.
Thanks.
This is a bad puzzle, and you should report it. The general chess convention is that castling is legal unless otherwise noted (and Chess.com can't currently note that in the puzzles interface).
Kind of a sour-grapes complaint. I lost 13 puzzle rating points in part because for this puzzle, I underestimated the recommended move 1. Ba3 since I thought ...O-O was a good reply. (An engine reports the game would then be even.) Using your analysis tool, it became evident that because of hidden game history, ...O-O was not legal, and White ends up with a 3-point edge.
I guess Ba3 is the best move anyway, but this puzzle is misleading -- unless there's some way to discover if curious when tackling it whether castling for Black is legal.
Thanks.