rnbqkbr1/1ppp3p/p1B3p1/4p3/3PPB2/N4NpP/PPQ1KP2/R6R b q - 0 12
FEN state: rnbqkbr1/1ppp3p/p1B3p1/4p3/3PPB2/N4NpP/PPQ1KP2/R6R b q - 0 12 ; Best move: e5f4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at b7, black pawn at c7, black pawn at d7 and black pawn at h7. Black pawn at a6, white bishop at c6 and black pawn at g6. Black pawn at e5. White pawn at d4, white pawn at e4 and white bishop at f4. White knight at a3, white knight at f3, black pawn at g3 and white pawn at h3. White pawn at a2, white pawn at b2, white queen at c2, white king at e2 and white pawn at f2. White rook at a1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 12. Black to move.