In my opinion Gijssen's view is flawed.Originally Posted by arosar
He is trying to use the fact the fact the Rules Commission ruled in 1998 that king captures in blitz are not permitted. As was noted they did not specify a penalty.
However there is no actual Article that states king captures are illegal.
The reason being is that in normal games the situation can never occur, because all illegal moves are retracted back to the position prior to the illegal move.
On top of that in Blitz many strange positions can occur and Blitz rules already allow other things that are not permitted in normal games to take plac., e.g. illegal moves not claimed stand and the play continues.
It is clear that if player A has a queen checking player B and player B leaves his King in check then according to the rules regarding piece movement and captures it is entirely valid to move the Queen to the square occupied by the King and remove it.
Allowing this explicitly in the rules as was the case for at least 15 years would be the sensible thing to do.