r1bqkb2/1ppp2rp/8/1P2p1p1/p1PPPBP1/5n1N/PNK2P1P/R1Q2BR1 b - - 1 21
FEN state: r1bqkb2/1ppp2rp/8/1P2p1p1/p1PPPBP1/5n1N/PNK2P1P/R1Q2BR1 b - - 1 21 ; Best move: f3d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8 and black bishop at f8. Black pawn at b7, black pawn at c7, black pawn at d7, black rook at g7 and black pawn at h7. White pawn at b5, black pawn at e5 and black pawn at g5. Black pawn at a4, white pawn at c4, white pawn at d4, white pawn at e4, white bishop at f4 and white pawn at g4. Black knight at f3 and white knight at h3. White pawn at a2, white knight at b2, white king at c2, white pawn at f2 and white pawn at h2. White rook at a1, white queen at c1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.