r2qkbr1/p1Qbp2n/Bpp5/3p1pNp/P2P1P1P/NP2B1KR/2P3Pn/R7 b q - 1 20
FEN state: r2qkbr1/p1Qbp2n/Bpp5/3p1pNp/P2P1P1P/NP2B1KR/2P3Pn/R7 b q - 1 20 ; Best move: d8c7
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at a7, white queen at c7, black bishop at d7, black pawn at e7 and black knight at h7. White bishop at a6, black pawn at b6 and black pawn at c6. Black pawn at d5, black pawn at f5, white knight at g5 and black pawn at h5. White pawn at a4, white pawn at d4, white pawn at f4 and white pawn at h4. White knight at a3, white pawn at b3, white bishop at e3, white king at g3 and white rook at h3. White pawn at c2, white pawn at g2 and black knight at h2. White rook at a1. Black queenside is the only castle move available. Half move number is 1. Full move number is 20. Black to move.