rnb1kbn1/3p3r/1qp1Bp2/p5pp/p2QPB2/R1PP1PPN/1P2K2P/1N5R b q - 5 16
FEN state: rnb1kbn1/3p3r/1qp1Bp2/p5pp/p2QPB2/R1PP1PPN/1P2K2P/1N5R b q - 5 16 ; Best move: b6d4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at d7 and black rook at h7. Black queen at b6, black pawn at c6, white bishop at e6 and black pawn at f6. Black pawn at a5, black pawn at g5 and black pawn at h5. Black pawn at a4, white queen at d4, white pawn at e4 and white bishop at f4. White rook at a3, white pawn at c3, white pawn at d3, white pawn at f3, white pawn at g3 and white knight at h3. White pawn at b2, white king at e2 and white pawn at h2. White knight at b1 and white rook at h1. Black queenside is the only castle move available. Half move number is 5. Full move number is 16. Black to move.