r2qkb1r/pp5p/n6n/2Pp1pp1/b2p4/2P1P2P/P1QP1PP1/1RBK1BNR w kq - 0 13
FEN state: r2qkb1r/pp5p/n6n/2Pp1pp1/b2p4/2P1P2P/P1QP1PP1/1RBK1BNR w kq - 0 13 ; Best move: c2a4
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7 and black pawn at h7. Black knight at a6 and black knight at h6. White pawn at c5, black pawn at d5, black pawn at f5 and black pawn at g5. Black bishop at a4 and black pawn at d4. White pawn at c3, white pawn at e3 and white pawn at h3. White pawn at a2, white queen at c2, white pawn at d2, white pawn at f2 and white pawn at g2. White rook at b1, white bishop at c1, white king at d1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 13. White to move.