version 5 by Aaron Reed
Chapter - Solving
[Solving actually performs the action for the player.]
Understand "solve" as solving. Solving is an action applying to nothing.
Check solving when suggestion hinting is currently disallowed (this is the check whether solve is currently allowed rule):
print IH message for suggestions-disallowed instead.
Carry out solving:
now relevant action is the suggested action;
unless relevant action is the action of the person asked fake-actioning:
process appropriate action, actually performing.