r2q1k1r/1bpp1pp1/p4n2/1PbPp1Np/3n1P1P/1PP5/3QP1P1/RNB1KB1R w KQ - 3 13
FEN state: r2q1k1r/1bpp1pp1/p4n2/1PbPp1Np/3n1P1P/1PP5/3QP1P1/RNB1KB1R w KQ - 3 13 ; Best move: c3d4
The current state of the chess board is: Black rook at a8, black queen at d8, black king at f8 and black rook at h8. Black bishop at b7, black pawn at c7, black pawn at d7, black pawn at f7 and black pawn at g7. Black pawn at a6 and black knight at f6. White pawn at b5, black bishop at c5, white pawn at d5, black pawn at e5, white knight at g5 and black pawn at h5. Black knight at d4, white pawn at f4 and white pawn at h4. White pawn at b3 and white pawn at c3. White queen at d2, white pawn at e2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 3. Full move number is 13. White to move.