1rbq1rk1/pp1pnppp/8/2p2n2/1PPP3P/8/P3PPP1/RNQ1KBNR w KQ - 0 10
FEN state: 1rbq1rk1/pp1pnppp/8/2p2n2/1PPP3P/8/P3PPP1/RNQ1KBNR w KQ - 0 10 ; Best move: d4c5
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black rook at f8 and black king at g8. Black pawn at a7, black pawn at b7, black pawn at d7, black knight at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at c5 and black knight at f5. White pawn at b4, white pawn at c4, white pawn at d4 and white pawn at h4. White pawn at a2, white pawn at e2, white pawn at f2 and white pawn at g2. White rook at a1, white knight at b1, white queen at c1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 0. Full move number is 10. White to move.