r1bq1b1r/pn2pk2/1ppp1pp1/7p/1PP2PPP/N2Q4/P2Nn3/R1B1KB1R b Q - 0 15
FEN state: r1bq1b1r/pn2pk2/1ppp1pp1/7p/1PP2PPP/N2Q4/P2Nn3/R1B1KB1R b Q - 0 15 ; Best move: e2f4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black bishop at f8 and black rook at h8. Black pawn at a7, black knight at b7, black pawn at e7 and black king at f7. Black pawn at b6, black pawn at c6, black pawn at d6, black pawn at f6 and black pawn at g6. Black pawn at h5. White pawn at b4, white pawn at c4, white pawn at f4, white pawn at g4 and white pawn at h4. White knight at a3 and white queen at d3. White pawn at a2, white knight at d2 and black knight at e2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. White queenside is the only castle move available. Half move number is 0. Full move number is 15. Black to move.