r1bqkbn1/1pp4r/p3p2p/2Pp1pp1/3n1P2/N1BPP2P/PP2Q1P1/R3KBNR w Q - 0 13
FEN state: r1bqkbn1/1pp4r/p3p2p/2Pp1pp1/3n1P2/N1BPP2P/PP2Q1P1/R3KBNR w Q - 0 13 ; Best move: c3d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at b7, black pawn at c7 and black rook at h7. Black pawn at a6, black pawn at e6 and black pawn at h6. White pawn at c5, black pawn at d5, black pawn at f5 and black pawn at g5. Black knight at d4 and white pawn at f4. White knight at a3, white bishop at c3, white pawn at d3, white pawn at e3 and white pawn at h3. White pawn at a2, white pawn at b2, white queen at e2 and white pawn at g2. White rook at a1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White queenside is the only castle move available. Half move number is 0. Full move number is 13. White to move.