r1b1k1r1/p1Np1p1n/4p1p1/2p1P1Pp/3B4/P6N/1bPQ1PBP/2R2K1R b q - 0 20
FEN state: r1b1k1r1/p1Np1p1n/4p1p1/2p1P1Pp/3B4/P6N/1bPQ1PBP/2R2K1R b q - 0 20 ; Best move: e8f8
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at g8. Black pawn at a7, white knight at c7, black pawn at d7, black pawn at f7 and black knight at h7. Black pawn at e6 and black pawn at g6. Black pawn at c5, white pawn at e5, white pawn at g5 and black pawn at h5. White bishop at d4. White pawn at a3 and white knight at h3. Black bishop at b2, white pawn at c2, white queen at d2, white pawn at f2, white bishop at g2 and white pawn at h2. White rook at c1, white king at f1 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.