1rb1k2r/pppp2pp/3bpp1n/2q5/1n1P1P1K/2N4N/PPP1P1PP/R1B1QB1R w k - 12 10
FEN state: 1rb1k2r/pppp2pp/3bpp1n/2q5/1n1P1P1K/2N4N/PPP1P1PP/R1B1QB1R w k - 12 10 ; Best move: d4c5
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7, black pawn at g7 and black pawn at h7. Black bishop at d6, black pawn at e6, black pawn at f6 and black knight at h6. Black queen at c5. Black knight at b4, white pawn at d4, white pawn at f4 and white king at h4. White knight at c3 and white knight at h3. White pawn at a2, white pawn at b2, white pawn at c2, white pawn at e2, white pawn at g2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at e1, white bishop at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 12. Full move number is 10. White to move.