Forum:Savage colosseum please help

savage colosseum

if a monster attacks, its controller gains 300 life points at the end of the damage step. all monster must attack, if able. during the end phase. destroy all face-up attack position monsters the turn player controls, that did not declare an attack.

hi i have been having alot of problems with the use of this card and i really would appreciate any imput on its effects esspecially from someone experienced. recently i have started playing yugioh with my cousins but every time i play savage colosseum it always seems to start arguments about its effects. so i have made a list of questions below that hopefully can be answered with consistency. if these arguments keep up the way they are i will probably quit the game so i will appreciate any help at all.

question 1- savage colosseum states that all monsters must attack "if able". so if the turn player has set monsters or face up defence position monsters are they forced to switch there battle positions and attack (as they are able to switch positions and they are able to attack)

question 2- an addition to question 1 but when savage colosseum is allready on the field can the turn play set monsters or special summon in face up defence position? or is all monsters that are played have to be summoned (face up attack)

question 3- if savage colosseum is already on the field and the turn player has face up attack position monsters can he durring his main phase 1 switch his monsters to defence position so durring his battle phase they are "unable" to attack?

question 4- if i have face up attack position monsters on the field and i do not attack once durring my battle phase and then durring main phase 2 activate savage colosseum, is my monsters destroyed by its effect?

question 5- kinda obvious but it was brought up so. if the turn player has attack position monsters on the field and savage colosseum is also on the field can he "choose" not to attack and allow them to be destroyed durring the end phase.

question 6- also kinda obvious but i have read some inconsistentcies around the web and other forums saying that you cannot skip your battle phase when savage colosseum is on the field does that mean that only 1 monster is required to attack? or is all monsters required to attack. eg. i have 3 monsters and i attacked with one do the other 2 have to attack as well?