2k4r/p2rpNb1/P4q1p/2P5/3p3P/3P2P1/2P5/RNBK1BR1 b - - 0 21
FEN state: 2k4r/p2rpNb1/P4q1p/2P5/3p3P/3P2P1/2P5/RNBK1BR1 b - - 0 21 ; Best move: f6f2
The current state of the chess board is: Black king at c8 and black rook at h8. Black pawn at a7, black rook at d7, black pawn at e7, white knight at f7 and black bishop at g7. White pawn at a6, black queen at f6 and black pawn at h6. White pawn at c5. Black pawn at d4 and white pawn at h4. White pawn at d3 and white pawn at g3. White pawn at c2. White rook at a1, white knight at b1, white bishop at c1, white king at d1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.