r3k3/p3p2r/nq1Q1npb/1Pp1N3/1P1PP2p/N1PB2Pb/5P1R/R1B1K3 b q - 1 20
FEN state: r3k3/p3p2r/nq1Q1npb/1Pp1N3/1P1PP2p/N1PB2Pb/5P1R/R1B1K3 b q - 1 20 ; Best move: e7d6
The current state of the chess board is: Black rook at a8 and black king at e8. Black pawn at a7, black pawn at e7 and black rook at h7. Black knight at a6, black queen at b6, white queen at d6, black knight at f6, black pawn at g6 and black bishop at h6. White pawn at b5, black pawn at c5 and white knight at e5. White pawn at b4, white pawn at d4, white pawn at e4 and black pawn at h4. White knight at a3, white pawn at c3, white bishop at d3, white pawn at g3 and black bishop at h3. White pawn at f2 and white rook at h2. White rook at a1, white bishop at c1 and white king at e1. Black queenside is the only castle move available. Half move number is 1. Full move number is 20. Black to move.