1nbq1br1/r2pkppp/p1p2n2/1p2p3/1P6/B1PBPN2/P2P1PPP/RN1QK2R b KQ - 5 10
FEN state: 1nbq1br1/r2pkppp/p1p2n2/1p2p3/1P6/B1PBPN2/P2P1PPP/RN1QK2R b KQ - 5 10 ; Best move: e5e4
The current state of the chess board is: Black knight at b8, black bishop at c8, black queen at d8, black bishop at f8 and black rook at g8. Black rook at a7, black pawn at d7, black king at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at a6, black pawn at c6 and black knight at f6. Black pawn at b5 and black pawn at e5. White pawn at b4. White bishop at a3, white pawn at c3, white bishop at d3, white pawn at e3 and white knight at f3. White pawn at a2, white pawn at d2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white queen at d1, white king at e1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 5. Full move number is 10. Black to move.