r2qkb1r/2p1ppB1/1p4n1/pN1P1b1p/1n2PPPp/3P4/P2K4/1R1Q2NR w k - 0 20
FEN state: r2qkb1r/2p1ppB1/1p4n1/pN1P1b1p/1n2PPPp/3P4/P2K4/1R1Q2NR w k - 0 20 ; Best move: g4f5
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at c7, black pawn at e7, black pawn at f7 and white bishop at g7. Black pawn at b6 and black knight at g6. Black pawn at a5, white knight at b5, white pawn at d5, black bishop at f5 and black pawn at h5. Black knight at b4, white pawn at e4, white pawn at f4, white pawn at g4 and black pawn at h4. White pawn at d3. White pawn at a2 and white king at d2. White rook at b1, white queen at d1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 20. White to move.