r1bq1bnr/pp2kp2/3pp2p/1Pp1n1p1/2P2P2/2N1P2N/P1QP2PP/R1B1KBR1 b Q - 0 10
FEN state: r1bq1bnr/pp2kp2/3pp2p/1Pp1n1p1/2P2P2/2N1P2N/P1QP2PP/R1B1KBR1 b Q - 0 10 ; Best move: e5d7
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black king at e7 and black pawn at f7. Black pawn at d6, black pawn at e6 and black pawn at h6. White pawn at b5, black pawn at c5, black knight at e5 and black pawn at g5. White pawn at c4 and white pawn at f4. White knight at c3, white pawn at e3 and white knight at h3. White pawn at a2, white queen at c2, white pawn at d2, white pawn at g2 and white pawn at h2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 10. Black to move.