rnbk1b1r/pp1ppq1p/4Bn2/2p2pp1/4PB2/N2P2PP/PPP1QP1R/R3K1N1 w Q - 4 16
FEN state: rnbk1b1r/pp1ppq1p/4Bn2/2p2pp1/4PB2/N2P2PP/PPP1QP1R/R3K1N1 w Q - 4 16 ; Best move: e6f7
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at d8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at d7, black pawn at e7, black queen at f7 and black pawn at h7. White bishop at e6 and black knight at f6. Black pawn at c5, black pawn at f5 and black pawn at g5. White pawn at e4 and white bishop at f4. White knight at a3, white pawn at d3, white pawn at g3 and white pawn at h3. White pawn at a2, white pawn at b2, white pawn at c2, white queen at e2, white pawn at f2 and white rook at h2. White rook at a1, white king at e1 and white knight at g1. White queenside is the only castle move available. Half move number is 4. Full move number is 16. White to move.