r4bnr/pp1bpk1p/5pp1/N1pQ4/1P1pqN1P/P4PP1/2P1P3/1RB2K1R b - - 4 20
FEN state: r4bnr/pp1bpk1p/5pp1/N1pQ4/1P1pqN1P/P4PP1/2P1P3/1RB2K1R b - - 4 20 ; Best move: e4d5
The current state of the chess board is: Black rook at a8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black bishop at d7, black pawn at e7, black king at f7 and black pawn at h7. Black pawn at f6 and black pawn at g6. White knight at a5, black pawn at c5 and white queen at d5. White pawn at b4, black pawn at d4, black queen at e4, white knight at f4 and white pawn at h4. White pawn at a3, white pawn at f3 and white pawn at g3. White pawn at c2 and white pawn at e2. White rook at b1, white bishop at c1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 20. Black to move.