r1b1kbnr/p2q1pp1/n2pp2p/2p5/2pPP1P1/5P2/PPP4P/RNBQ1KNR b kq - 4 13
FEN state: r1b1kbnr/p2q1pp1/n2pp2p/2p5/2pPP1P1/5P2/PPP4P/RNBQ1KNR b kq - 4 13 ; Best move: d6d5
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black queen at d7, black pawn at f7 and black pawn at g7. Black knight at a6, black pawn at d6, black pawn at e6 and black pawn at h6. Black pawn at c5. Black pawn at c4, white pawn at d4, white pawn at e4 and white pawn at g4. White pawn at f3. White pawn at a2, white pawn at b2, white pawn at c2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, white king at f1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 4. Full move number is 13. Black to move.