r1bqk2r/2p3bp/p2ppnp1/1pn5/1P2pP2/N1P4N/P2PB1PP/R1BQK2R w KQkq - 2 13
FEN state: r1bqk2r/2p3bp/p2ppnp1/1pn5/1P2pP2/N1P4N/P2PB1PP/R1BQK2R w KQkq - 2 13 ; Best move: b4c5
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 rook at h8. Black pawn at c7, black bishop at g7 and black pawn at h7. Black pawn at a6, black pawn at d6, black pawn at e6, black knight at f6 and black pawn at g6. Black pawn at b5 and black knight at c5. White pawn at b4, black pawn at e4 and white pawn at f4. White knight at a3, white pawn at c3 and white knight at h3. White pawn at a2, white pawn at d2, white bishop at e2, white pawn at g2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white king at e1 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 2. Full move number is 13. White to move.