1rb3n1/p1p1k1b1/n2N1ppr/1P2p2p/1P1p2P1/3P4/P3PPRP/RNQ1KB2 b Q - 0 20
FEN state: 1rb3n1/p1p1k1b1/n2N1ppr/1P2p2p/1P1p2P1/3P4/P3PPRP/RNQ1KB2 b Q - 0 20 ; Best move: c7d6
The current state of the chess board is: Black rook at b8, black bishop at c8 and black knight at g8. Black pawn at a7, black pawn at c7, black king at e7 and black bishop at g7. Black knight at a6, white knight at d6, black pawn at f6, black pawn at g6 and black rook at h6. White pawn at b5, black pawn at e5 and black pawn at h5. White pawn at b4, black pawn at d4 and white pawn at g4. White pawn at d3. White pawn at a2, white pawn at e2, white pawn at f2, white rook at g2 and white pawn at h2. White rook at a1, white knight at b1, white queen at c1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 0. Full move number is 20. Black to move.