r1b1kb2/2p1n3/pp1p1Qp1/n7/2B1PP2/Pq1P2pP/2PNR3/R1B1K1N1 w q - 0 20
FEN state: r1b1kb2/2p1n3/pp1p1Qp1/n7/2B1PP2/Pq1P2pP/2PNR3/R1B1K1N1 w q - 0 20 ; Best move: f6f7
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black bishop at f8. Black pawn at c7 and black knight at e7. Black pawn at a6, black pawn at b6, black pawn at d6, white queen at f6 and black pawn at g6. Black knight at a5. White bishop at c4, white pawn at e4 and white pawn at f4. White pawn at a3, black queen at b3, white pawn at d3, black pawn at g3 and white pawn at h3. White pawn at c2, white knight at d2 and white rook at e2. White rook at a1, white bishop at c1, white king at e1 and white knight at g1. Black queenside is the only castle move available. Half move number is 0. Full move number is 20. White to move.