rn2kbn1/1p3p1r/p5pp/2pppb2/1Q1PPB1q/PPP5/2R2PPP/1N1K1BNR b q - 0 16
FEN state: rn2kbn1/1p3p1r/p5pp/2pppb2/1Q1PPB1q/PPP5/2R2PPP/1N1K1BNR b q - 0 16 ; Best move: c5b4
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at b7, black pawn at f7 and black rook at h7. Black pawn at a6, black pawn at g6 and black pawn at h6. Black pawn at c5, black pawn at d5, black pawn at e5 and black bishop at f5. White queen at b4, white pawn at d4, white pawn at e4, white bishop at f4 and black queen at h4. White pawn at a3, white pawn at b3 and white pawn at c3. White rook at c2, white pawn at f2, white pawn at g2 and white pawn at h2. White knight at b1, white king 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 16. Black to move.