r1b1k2r/pp2p2p/n2q2pn/2pp1p2/4PQ2/2N1PN1P/PPP1KPP1/R1B2B1R b kq - 1 13
FEN state: r1b1k2r/pp2p2p/n2q2pn/2pp1p2/4PQ2/2N1PN1P/PPP1KPP1/R1B2B1R b kq - 1 13 ; Best move: f5e4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at e7 and black pawn at h7. Black knight at a6, black queen at d6, black pawn at g6 and black knight at h6. Black pawn at c5, black pawn at d5 and black pawn at f5. White pawn at e4 and white queen at f4. White knight at c3, white pawn at e3, white knight at f3 and white pawn at h3. White pawn at a2, white pawn at b2, white pawn at c2, white king at e2, white pawn at f2 and white pawn at g2. White rook at a1, white bishop at c1, white bishop at f1 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.