r2qkbr1/3bp1pp/7n/pp1pBp2/P2P2P1/RpP4P/1P1KPP2/1N3BNR b - - 1 17
FEN state: r2qkbr1/3bp1pp/7n/pp1pBp2/P2P2P1/RpP4P/1P1KPP2/1N3BNR b - - 1 17 ; Best move: b5a4
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8 and black rook at g8. Black bishop at d7, black pawn at e7, black pawn at g7 and black pawn at h7. Black knight at h6. Black pawn at a5, black pawn at b5, black pawn at d5, white bishop at e5 and black pawn at f5. White pawn at a4, white pawn at d4 and white pawn at g4. White rook at a3, black pawn at b3, white pawn at c3 and white pawn at h3. White pawn at b2, white king at d2, white pawn at e2 and white pawn at f2. White knight at b1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 17. Black to move.