[Event "Chess Riddles: Checkmate in 0 moves - Solution"] [Date "2025.10.25"] [Result "*"] [Variant "Standard"] [ECO "?"] [Opening "?"] [StudyName "Chess Riddles"] [ChapterName "Checkmate in 0 moves - Solution"] [ChapterURL "https://adjva4.dpdns.org/study/7QTOaGiW/1fTSHvGI"] [Annotator "https://adjva4.dpdns.org/@/adapodadeiii"] [FEN "5N2/PPPP1PP1/8/5k2/4P2P/6K1/8/B6B b - - 0 1"] [SetUp "1"] [UTCDate "2025.10.25"] [UTCTime "05:56:55"] [Orientation "white"] { The Ba8 cannot come from f1 (because of pawns on e2 and g2 - still not have moved) nor it is a promoted piece (because of the fact that 8 of white pawns are on the chessboard). Therefore the position is illegal. Thus, you need to turn the board by 180º By turning the board by a 'hundred and eighty' degress, we would be getting this position from white's perspective & it's a checkmate. Composed by Mannis Charosh in the year 1937 } *