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Amendment to Interpenetration Rule

Posted: Wed Sep 02, 2009 1:37 pm
by philqw78
We all know its wrong, well most of us. What is the cure. We know about the LF bridge across bad terrain. Really bad. Moving your horse thru your LF then the LF through the horse. Really bad. There are also other things thrown up that have not been mentioned yet.

Consider

Image
The green BG is a target of shock cavalry red as it is only a 90 degree wheel and by bursting through orange they will reach. This is not an otional move if the red cav fail a cmt. This could be done a number of other ways. But is this or is this not a played for position. I have certainly had my lancers behind other BG hoping they would fail a CMT. Maybe not in such an extreme situation.

What can be done?

image corrected

Posted: Wed Sep 02, 2009 1:41 pm
by madcam2us
No interpenetration during charges is all ready a rule...

Madcam.

Posted: Wed Sep 02, 2009 1:43 pm
by grahambriggs
Doesn't the diagram showing shock mounted charging through LF show that the mounted do their charge move and the LF being moved backwards to make room? Why do the cavalry get to move further than 5MU in such a situation? The 5MU move, after all, is sufficient to clear the LF.

Posted: Wed Sep 02, 2009 1:44 pm
by philqw78
Shock mounted must test not to burst through as stated they are shock cav
(in reply to Madcam)

Posted: Wed Sep 02, 2009 1:46 pm
by philqw78
grahambriggs wrote:Doesn't the diagram showing shock mounted charging through LF show that the mounted do their charge move and the LF being moved backwards to make room? Why do the cavalry get to move further than 5MU in such a situation? The 5MU move, after all, is sufficient to clear the LF.
The LF are moved back if there is not room, here there is a 30mm gap and those entering a BG pass through it.

Posted: Wed Sep 02, 2009 1:49 pm
by madcam2us
On reflection, are you saying they fail the CMT to NOT charge, thus bursting thru?

If so, then why doesn't page 48 come into play?

Basically move the Cv 5 inches, if this isn't enough to contact the Green BG then shift the LF back behind the CV?

If this can't be completed, then the move is disallowed....

Madcam.

Posted: Wed Sep 02, 2009 1:51 pm
by grahambriggs
philqw78 wrote:
grahambriggs wrote:Doesn't the diagram showing shock mounted charging through LF show that the mounted do their charge move and the LF being moved backwards to make room? Why do the cavalry get to move further than 5MU in such a situation? The 5MU move, after all, is sufficient to clear the LF.
The LF are moved back if there is not room, here there is a 30mm gap and those entering a BG pass through it.
But there isn't room the charge goes 5MU and there isn't room for the LF because the cavalry bases are there (which is the same "not room" as the diagram shows, it's just that in the diagram the mounted can't move their full MU cos they've hit the enemy).

Posted: Wed Sep 02, 2009 1:55 pm
by philqw78
madcam2us wrote:If so, then why doesn't page 48 come into play?

Madcam.
Perhaps because I can't bring my rules to work. :cry:

I thought that if there was not room on the far side the interpenetrated BG moved back.

But if you are saying that if it cannot get through the charge is cancelled why can this not be used for normal moves, where if they cannot get through the move is cancelled. It would save a lot of pain.

Posted: Wed Sep 02, 2009 2:01 pm
by madcam2us
The move PRIOR to any CMTs etc. has to be within 5 inch (for Cv charges) in order for them to need to test anyways.

If >5" then no test even if one uses the TimeWarp move.

If <5" then CMT not to charge, if fail move the 5", move the LF back to make room, if unable to move the LF back, the move is disallowed...

Madcam.

Posted: Wed Sep 02, 2009 3:17 pm
by lawrenceg
The rules for busting through are not the same as normal interpenetration. You don't get any extra distance.

Posted: Wed Sep 02, 2009 6:26 pm
by philqw78
Yes I'm happily back at home now with my book and its charge range, not charge reach. Which at least is good.

Posted: Thu Sep 03, 2009 12:15 am
by deadtorius
Quick point here the green unit does not start in front of the red cav so it is not really in its charge sphere is it? I thought you had to be at least partially in front to be a charge target.

Posted: Thu Sep 03, 2009 6:24 am
by philqw78
deadtorius wrote:Quick point here the green unit does not start in front of the red cav so it is not really in its charge sphere is it? I thought you had to be at least partially in front to be a charge target.
This I have discovered works differently than I thought so the interpenetration does not happen,
but
any unit in charge range is a target (if it can be contacted with a wheel of 90 degrees or less) not just those to front.

Posted: Thu Sep 03, 2009 3:02 pm
by spikemesq
philqw78 wrote:
deadtorius wrote:Quick point here the green unit does not start in front of the red cav so it is not really in its charge sphere is it? I thought you had to be at least partially in front to be a charge target.
This I have discovered works differently than I thought so the interpenetration does not happen,
but
any unit in charge range is a target (if it can be contacted with a wheel of 90 degrees or less) not just those to front.
Interesting point.

Has anyone worked out in spiffy diagrams (like the Nudawad*&*$ gang used to do for DBM) the distance of 90 deg wheels for LH/Cv/Kn 2-wide and 3-wide? Could be a useful shorthand for speedy measurements.

Raw math incoming:

2-wide = square root of (2(80mmx80mm)) = 113.14mm
3-wide = square root of (2(120mmx120mm) = 169.70mm

That leaves Kn/Cat/HCh out of the picture, they cannot wheel 90 degrees with 100mm move.

Cv/LCh/LF get a whopping 12mm of post wheel move.

LH have 62mm after a 90 degree wheel.

The more you know . . . .

Posted: Thu Sep 03, 2009 3:37 pm
by dave_r
Which is all great - but you don't measure wheels like that.

You measure the starting point and the ending point of the unit. As long as the wheel is "proper" (i.e. corner remains stationery, no sideways movement etc etc) then you don't measure the distance taken to do the wheel.

Posted: Thu Sep 03, 2009 4:39 pm
by lawrenceg
dave_r wrote:Which is all great - but you don't measure wheels like that.

You measure the starting point and the ending point of the unit. As long as the wheel is "proper" (i.e. corner remains stationery, no sideways movement etc etc) then you don't measure the distance taken to do the wheel.
I think you are getting mixed up with DBMM Dave (which does work like that).

Bottom of FOG Page 43 tells you how to measure distance moved "during the wheel" not for the whole move.

Posted: Thu Sep 03, 2009 5:01 pm
by dave_r
That's not how RBS plays it.

Posted: Thu Sep 03, 2009 5:34 pm
by nikgaukroger
I thought you'd have learnt about rules authors by now ...

Posted: Thu Sep 03, 2009 6:08 pm
by david53
dave_r wrote:Which is all great - but you don't measure wheels like that.

You measure the starting point and the ending point of the unit. As long as the wheel is "proper" (i.e. corner remains stationery, no sideways movement etc etc) then you don't measure the distance taken to do the wheel.

Your right it is says on page 43 point to point.

Posted: Thu Sep 03, 2009 6:09 pm
by spikemesq
Right, so it is straight line movement for the wheel, and the remainder to follow.