rnb1kbn1/1ppp2pr/p4q2/2P1p2p/P2N1p2/1P1PB1P1/R1Q1PP1P/1N2KB1R b K - 2 15
FEN state: rnb1kbn1/1ppp2pr/p4q2/2P1p2p/P2N1p2/1P1PB1P1/R1Q1PP1P/1N2KB1R b K - 2 15 ; Best move: f4e3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at b7, black pawn at c7, black pawn at d7, black pawn at g7 and black rook at h7. Black pawn at a6 and black queen at f6. White pawn at c5, black pawn at e5 and black pawn at h5. White pawn at a4, white knight at d4 and black pawn at f4. White pawn at b3, white pawn at d3, white bishop at e3 and white pawn at g3. White rook at a2, white queen at c2, white pawn at e2, white pawn at f2 and white pawn at h2. White knight at b1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 2. Full move number is 15. Black to move.