rnbqk1r1/1p1ppp2/p1p4b/1B4pp/3PP3/NP4P1/P1P2PnP/1RBQ1KNR b q - 5 11
FEN state: rnbqk1r1/1p1ppp2/p1p4b/1B4pp/3PP3/NP4P1/P1P2PnP/1RBQ1KNR b q - 5 11 ; 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 and black rook at g8. Black pawn at b7, black pawn at d7, black pawn at e7 and black pawn at f7. Black pawn at a6, black pawn at c6 and black bishop at h6. White bishop at b5, black pawn at g5 and black pawn at h5. White pawn at d4 and white pawn at e4. White knight at a3, white pawn at b3 and white pawn at g3. White pawn at a2, white pawn at c2, white pawn at f2, black knight at g2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at d1, white king at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 5. Full move number is 11. Black to move.