In one of pages, describing this game was comment about move of qualmaqini:
'Interpret that as you wish'. I suppose, it's move is unknown.
Here are my ideas about it:
1. If on same rank or file as opponent's king, moves 1 orthogonally
towards it. If shares neither rank, nor file, moves 1 diagonally towards
both rank and file.
2. Moves orthogonally towards opponent's king either rank or file.
3. As 1 and 2 both.