r4br1/1q2pkpp/4b3/pPpP4/2P2p2/4RP1N/NP1PB1PP/2B1K2R b K - 6 20
FEN state: r4br1/1q2pkpp/4b3/pPpP4/2P2p2/4RP1N/NP1PB1PP/2B1K2R b K - 6 20 ; Best move: e6h3
The current state of the chess board is: Black rook at a8, black bishop at f8 and black rook at g8. Black queen at b7, black pawn at e7, black king at f7, black pawn at g7 and black pawn at h7. Black bishop at e6. Black pawn at a5, white pawn at b5, black pawn at c5 and white pawn at d5. White pawn at c4 and black pawn at f4. White rook at e3, white pawn at f3 and white knight at h3. White knight at a2, white pawn at b2, white pawn at d2, white bishop at e2, white pawn at g2 and white pawn at h2. White bishop at c1, white king at e1 and white rook at h1. White kingside is the only castle move available. Half move number is 6. Full move number is 20. Black to move.