r1b2rk1/p2n4/5qpb/1p1Ppp2/PPpB1PP1/2NP4/3KP2n/R4BNR b - - 0 20
FEN state: r1b2rk1/p2n4/5qpb/1p1Ppp2/PPpB1PP1/2NP4/3KP2n/R4BNR b - - 0 20 ; Best move: e5d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black rook at f8 and black king at g8. Black pawn at a7 and black knight at d7. Black queen at f6, black pawn at g6 and black bishop at h6. Black pawn at b5, white pawn at d5, black pawn at e5 and black pawn at f5. White pawn at a4, white pawn at b4, black pawn at c4, white bishop at d4, white pawn at f4 and white pawn at g4. White knight at c3 and white pawn at d3. White king at d2, white pawn at e2 and black knight at h2. White rook at a1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. Black to move.