r1b1k3/p1n2pp1/1p1Qp2n/3p4/1P1rPP2/P1PP4/3R2PP/3K1BNR b q - 0 20
FEN state: r1b1k3/p1n2pp1/1p1Qp2n/3p4/1P1rPP2/P1PP4/3R2PP/3K1BNR b q - 0 20 ; Best move: c8d7
The current state of the chess board is: Black rook at a8, black bishop at c8 and black king at e8. Black pawn at a7, black knight at c7, black pawn at f7 and black pawn at g7. Black pawn at b6, white queen at d6, black pawn at e6 and black knight at h6. Black pawn at d5. White pawn at b4, black rook at d4, white pawn at e4 and white pawn at f4. White pawn at a3, white pawn at c3 and white pawn at d3. White rook at d2, white pawn at g2 and white pawn at h2. 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 20. Black to move.