2rqkb1r/2p2n1p/bp2p1p1/p1Pp1pP1/P2NN2P/3PB3/1P2PP2/RQ2KB1R b k - 2 20
FEN state: 2rqkb1r/2p2n1p/bp2p1p1/p1Pp1pP1/P2NN2P/3PB3/1P2PP2/RQ2KB1R b k - 2 20 ; Best move: d5e4
The current state of the chess board is: Black rook at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at c7, black knight at f7 and black pawn at h7. Black bishop at a6, black pawn at b6, black pawn at e6 and black pawn at g6. Black pawn at a5, white pawn at c5, black pawn at d5, black pawn at f5 and white pawn at g5. White pawn at a4, white knight at d4, white knight at e4 and white pawn at h4. White pawn at d3 and white bishop at e3. White pawn at b2, white pawn at e2 and white pawn at f2. White rook at a1, white queen at b1, white king at e1, white bishop at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 2. Full move number is 20. Black to move.