rnbqkbn1/1p1pp2r/p1p3pp/1N3p2/1P4PP/5P2/P1PPPK2/R1BQ1BNR b q - 0 8
FEN state: rnbqkbn1/1p1pp2r/p1p3pp/1N3p2/1P4PP/5P2/P1PPPK2/R1BQ1BNR b q - 0 8 ; Best move: a6b5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at b7, black pawn at d7, black pawn at e7 and black rook at h7. Black pawn at a6, black pawn at c6, black pawn at g6 and black pawn at h6. White knight at b5 and black pawn at f5. White pawn at b4, white pawn at g4 and white pawn at h4. White pawn at f3. White pawn at a2, white pawn at c2, white pawn at d2, white pawn at e2 and white king at f2. White rook at a1, white bishop at c1, white queen at d1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 8. Black to move.