r2qkbnr/p1p1p3/1p1p4/1b1n1ppp/2PP1BP1/N3PP2/P3K1BP/R1Q3NR b kq - 1 13
FEN state: r2qkbnr/p1p1p3/1p1p4/1b1n1ppp/2PP1BP1/N3PP2/P3K1BP/R1Q3NR b kq - 1 13 ; Best move: g5f4
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7 and black pawn at e7. Black pawn at b6 and black pawn at d6. Black bishop at b5, black knight at d5, black pawn at f5, black pawn at g5 and black pawn at h5. White pawn at c4, white pawn at d4, white bishop at f4 and white pawn at g4. White knight at a3, white pawn at e3 and white pawn at f3. White pawn at a2, white king at e2, white bishop at g2 and white pawn at h2. White rook at a1, white queen at c1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 1. Full move number is 13. Black to move.