r1bqkb2/pp1pp3/2n4n/2p2ppr/P1PP1P2/7B/NP2P2P/1RBQK1NR w Kq - 1 13
FEN state: r1bqkb2/pp1pp3/2n4n/2p2ppr/P1PP1P2/7B/NP2P2P/1RBQK1NR w Kq - 1 13 ; Best move: d4d5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8 and black bishop at f8. Black pawn at a7, black pawn at b7, black pawn at d7 and black pawn at e7. Black knight at c6 and black knight at h6. Black pawn at c5, black pawn at f5, black pawn at g5 and black rook at h5. White pawn at a4, white pawn at c4, white pawn at d4 and white pawn at f4. White bishop at h3. White knight at a2, white pawn at b2, white pawn at e2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at d1, white king at e1, white knight at g1 and white rook at h1. White kingside and black queenside castles are available. Half move number is 1. Full move number is 13. White to move.