4n2r/pb1kp3/1r1Pn2b/1ppP1ppp/5B1P/1PNP1P2/P5PR/RQ2KBN1 b - - 2 21
FEN state: 4n2r/pb1kp3/1r1Pn2b/1ppP1ppp/5B1P/1PNP1P2/P5PR/RQ2KBN1 b - - 2 21 ; Best move: e6f4
The current state of the chess board is: Black knight at e8 and black rook at h8. Black pawn at a7, black bishop at b7, black king at d7 and black pawn at e7. Black rook at b6, white pawn at d6, black knight at e6 and black bishop at h6. Black pawn at b5, black pawn at c5, white pawn at d5, black pawn at f5, black pawn at g5 and black pawn at h5. White bishop at f4 and white pawn at h4. White pawn at b3, white knight at c3, white pawn at d3 and white pawn at f3. White pawn at a2, white pawn at g2 and white rook at h2. White rook at a1, white queen at b1, white king at e1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 2. Full move number is 21. Black to move.