rn3qn1/p6r/b1p2kpb/1p1P4/1N1p1p2/PP1BB1P1/2PK1P1P/RQ4NR b - - 1 21
FEN state: rn3qn1/p6r/b1p2kpb/1p1P4/1N1p1p2/PP1BB1P1/2PK1P1P/RQ4NR b - - 1 21 ; Best move: f4e3
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at f8 and black knight at g8. Black pawn at a7 and black rook at h7. Black bishop at a6, black pawn at c6, black king at f6, black pawn at g6 and black bishop at h6. Black pawn at b5 and white pawn at d5. White knight at b4, black pawn at d4 and black pawn at f4. White pawn at a3, white pawn at b3, white bishop at d3, white bishop at e3 and white pawn at g3. White pawn at c2, white king at d2, white pawn at f2 and white pawn at h2. White rook at a1, white queen at b1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.