r1b1k1nr/p2q2pp/npp2p2/1N1pp3/3NPPP1/P1bB4/RPPP3P/2BQK1R1 w kq - 8 13
FEN state: r1b1k1nr/p2q2pp/npp2p2/1N1pp3/3NPPP1/P1bB4/RPPP3P/2BQK1R1 w kq - 8 13 ; Best move: d4c6
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at a7, black queen at d7, black pawn at g7 and black pawn at h7. Black knight at a6, black pawn at b6, black pawn at c6 and black pawn at f6. White knight at b5, black pawn at d5 and black pawn at e5. White knight at d4, white pawn at e4, white pawn at f4 and white pawn at g4. White pawn at a3, black bishop at c3 and white bishop at d3. White rook at a2, white pawn at b2, white pawn at c2, white pawn at d2 and white pawn at h2. White bishop at c1, white queen at d1, white king at e1 and white rook at g1. Black kingside and black queenside castles are available. Half move number is 8. Full move number is 13. White to move.