4k1nr/1p3Nb1/pnrp1ppp/2pPp3/4P3/NPP1B2P/R4PB1/3K3R b k - 1 20
FEN state: 4k1nr/1p3Nb1/pnrp1ppp/2pPp3/4P3/NPP1B2P/R4PB1/3K3R b k - 1 20 ; Best move: e8f7
The current state of the chess board is: Black king at e8, black knight at g8 and black rook at h8. Black pawn at b7, white knight at f7 and black bishop at g7. Black pawn at a6, black knight at b6, black rook at c6, black pawn at d6, black pawn at f6, black pawn at g6 and black pawn at h6. Black pawn at c5, white pawn at d5 and black pawn at e5. White pawn at e4. White knight at a3, white pawn at b3, white pawn at c3, white bishop at e3 and white pawn at h3. White rook at a2, white pawn at f2 and white bishop at g2. White king at d1 and white rook at h1. Black kingside is the only castle move available. Half move number is 1. Full move number is 20. Black to move.