by Jafazo » Wednesday October 15th, 2014 1:06am
Hero Quest rulebook, page 15, "SEE"
Quote: "For the Elf or Wizard to cast a spell, the target must be visible. Heroes and monsters are only visible if an unobstructed straight line can be traced from the spell-caster to the target."
This text is supported by a visual image that provides examples as to which monsters the Elf character can 'SEE', and within that image, his line of sight is blocked by the Wizard effectively preventing the Elf from casting a spell on an Orc behind the Wizard.
Within the Hero Quest Armory the description for a Crossbow reads as follows...
"This long range weapon gives you the attack strength of 3 combat dice. You may fire at any monster that you can "see". However, you cannot fire at a monster that is adjacent to you..." and so on and so forth.
Key words are vital to any rule set and in this case we need to pay attention to the keyword, "See". If a Hero can't cast a spell at a target who is hiding behind another Hero, that means we cannot "See" that monster, therefore, if the Crossbow only allows us to attack targets we can "See", the Elf CANNOT stand behind the Barbarian and fire a volley of arrows into the room. The Elf can do nothing. You've been allowing and having a problem with this issue because you missed an important rule. The game needs no adjustment.
Unless you specify your version I'm going by the US rules.