rn4nr/pppb1k2/4pppp/P1bpP1P1/1Q6/5N1B/1P3P1P/1RB2K1R b - - 0 20
FEN state: rn4nr/pppb1k2/4pppp/P1bpP1P1/1Q6/5N1B/1P3P1P/1RB2K1R b - - 0 20 ; Best move: c5b4
The current state of the chess board is: Black rook at a8, black knight at b8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black bishop at d7 and black king at f7. Black pawn at e6, black pawn at f6, black pawn at g6 and black pawn at h6. White pawn at a5, black bishop at c5, black pawn at d5, white pawn at e5 and white pawn at g5. White queen at b4. White knight at f3 and white bishop at h3. White pawn at b2, white pawn at f2 and white pawn at h2. 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 0. Full move number is 20. Black to move.