r2k1bn1/pn6/3ppp2/1p6/N1P1P2r/3p1P1b/PP3KPP/R3QBNR b - - 5 21
FEN state: r2k1bn1/pn6/3ppp2/1p6/N1P1P2r/3p1P1b/PP3KPP/R3QBNR b - - 5 21 ; Best move: b5a4
The current state of the chess board is: Black rook at a8, black king at d8, black bishop at f8 and black knight at g8. Black pawn at a7 and black knight at b7. Black pawn at d6, black pawn at e6 and black pawn at f6. Black pawn at b5. White knight at a4, white pawn at c4, white pawn at e4 and black rook at h4. Black pawn at d3, white pawn at f3 and black bishop at h3. White pawn at a2, white pawn at b2, white king at f2, white pawn at g2 and white pawn at h2. White rook at a1, white queen at e1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 5. Full move number is 21. Black to move.