2rk2nr/ppp2p2/7p/qNbpp1pP/P2nP3/5PP1/2PP4/R1BBK1NR b Q - 0 20
FEN state: 2rk2nr/ppp2p2/7p/qNbpp1pP/P2nP3/5PP1/2PP4/R1BBK1NR b Q - 0 20 ; Best move: d4b5
The current state of the chess board is: Black rook at c8, black king at d8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7 and black pawn at f7. Black pawn at h6. Black queen at a5, white knight at b5, black bishop at c5, black pawn at d5, black pawn at e5, black pawn at g5 and white pawn at h5. White pawn at a4, black knight at d4 and white pawn at e4. White pawn at f3 and white pawn at g3. White pawn at c2 and white pawn at d2. White rook at a1, white bishop at c1, white bishop at d1, white king at e1, white knight at g1 and white rook at h1. White queenside is the only castle move available. Half move number is 0. Full move number is 20. Black to move.