1rbk1bn1/p2p1pp1/Np5r/4p1qp/1P1p1P2/N1BPP3/P5PP/R1K2BR1 b - - 8 20
FEN state: 1rbk1bn1/p2p1pp1/Np5r/4p1qp/1P1p1P2/N1BPP3/P5PP/R1K2BR1 b - - 8 20 ; Best move: e5f4
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at d8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at d7, black pawn at f7 and black pawn at g7. White knight at a6, black pawn at b6 and black rook at h6. Black pawn at e5, black queen at g5 and black pawn at h5. White pawn at b4, black pawn at d4 and white pawn at f4. White knight at a3, white bishop at c3, white pawn at d3 and white pawn at e3. White pawn at a2, white pawn at g2 and white pawn at h2. White rook at a1, white king at c1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 8. Full move number is 20. Black to move.