i was playing a game with french defense and came accross a really weird engine suggestion in post game analysis. its a really weird pawn move hxg3 while g3 square is vacant. its no en passant as well. is it some other wierd rule i do not know. for reference i ve tried to recreate the same move and m sharing the notations below. i m playing through the chess.com app.
[Event "Computer"]
[Site " Chess.com"]
[Date "07-Oct-2017"]
[White "khushmonster"]
[Black "Comp"]
[Result "*"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"]
1. e4 e5 2. Be2 Bc5 3. a3 Ne7 4. g4 O-O 5. hxg3 *
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