r2k2r1/p2n2bp/b1p2p2/3qp1pn/P1P1P1K1/1P1BBP1N/6PP/R1Q4R w - - 1 21
FEN state: r2k2r1/p2n2bp/b1p2p2/3qp1pn/P1P1P1K1/1P1BBP1N/6PP/R1Q4R w - - 1 21 ; Best move: c4d5
The current state of the chess board is: Black rook at a8, black king at d8 and black rook at g8. Black pawn at a7, black knight at d7, black bishop at g7 and black pawn at h7. Black bishop at a6, black pawn at c6 and black pawn at f6. Black queen at d5, black pawn at e5, black pawn at g5 and black knight at h5. White pawn at a4, white pawn at c4, white pawn at e4 and white king at g4. White pawn at b3, white bishop at d3, white bishop at e3, white pawn at f3 and white knight at h3. White pawn at g2 and white pawn at h2. White rook at a1, white queen at c1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. White to move.