rn3qnr/4ppk1/pp1p3p/2pQ2p1/1PP3P1/N6N/P1bPPPBP/b1B1KR2 b - - 1 21
FEN state: rn3qnr/4ppk1/pp1p3p/2pQ2p1/1PP3P1/N6N/P1bPPPBP/b1B1KR2 b - - 1 21 ; Best move: c2a4
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at f8, black knight at g8 and black rook at h8. Black pawn at e7, black pawn at f7 and black king at g7. Black pawn at a6, black pawn at b6, black pawn at d6 and black pawn at h6. Black pawn at c5, white queen at d5 and black pawn at g5. White pawn at b4, white pawn at c4 and white pawn at g4. White knight at a3 and white knight at h3. White pawn at a2, black bishop at c2, white pawn at d2, white pawn at e2, white pawn at f2, white bishop at g2 and white pawn at h2. Black bishop at a1, white bishop at c1, white king at e1 and white rook at f1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.