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Post by stevie on Nov 25, 2019 22:38:24 GMT
How finicky are you when it comes to ‘micro-measuring’? Take the following situation in rough or bad going:- ◄-------- ┌─────────┐ ┌────┐ │ ⁞▲ │ │ │ └─────────┘ ┌─────────┐┌─────────┐ ┌─────────┐│ ◄ │ ┌─────────┐ ⁞ │ ▼ ││ ▲ │ │ ▼ ││ │ │ ▼ │ ⁞ └─────────┘└─────────┘ └─────────┘└────┘ └─────────┘. . . . . ┌─────────┐ ┌─────────┐ ┌─────────┐ │ ▲ │ │ ▲ │ │ ▲ │ └─────────┘ └─────────┘ └─────────┘ Diagram 1 Diagram 2 Diagram 3In diagram 1 a red Blade with a movement of only 1 BW is in mutual side-edge contact, and wants to ‘hard-flank’ an already frontally engaged enemy so that it ends the move legally with front corners touching, as shown in diagram 2. However, old Pythagoras says such a hard-flanking move would cost 1.12 BW. (40mm x 40mm) + (20mm x 20mm) = 2,000, the square root of which is 44.72mm Would you allow such a move? Or would you insist that the red Blade must be passed the blue element with its left rear-corner touching the blue left rear corner? (as shown in diagram 3, so that the red right front-corner moves exactly 1 BW/40mm directly to its left in order to end up as in diagram 2). Some Helpful Downloads can be found here: fanaticus-dba.wikia.com/wiki/Category:Reference_sheets_and_epitomes And here is the latest Jan 2019 FAQ: fanaticus-dba.wikia.com/wiki/FAQ_2019_1st_Quarter
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Post by lkmjbc on Nov 26, 2019 1:02:44 GMT
How finicky are you when it comes to ‘micro-measuring’? Take the following situation in rough or bad going:- ◄-------- ┌─────────┐ ┌────┐ │ ⁞▲ │ │ │ └─────────┘ ┌─────────┐┌─────────┐ ┌─────────┐│ ◄ │ ┌─────────┐ ⁞ │ ▼ ││ ▲ │ │ ▼ ││ │ │ ▼ │ ⁞ └─────────┘└─────────┘ └─────────┘└────┘ └─────────┘. . . . . ┌─────────┐ ┌─────────┐ ┌─────────┐ │ ▲ │ │ ▲ │ │ ▲ │ └─────────┘ └─────────┘ └─────────┘ Diagram 1 Diagram 2 Diagram 3In diagram 1 a red Blade with a movement of only 1 BW is in mutual side-edge contact, and wants to ‘hard-flank’ an already frontally engaged enemy so that it ends the move legally with front corners touching, as shown in diagram 2. However, old Pythagoras says such a hard-flanking move would cost 1.12 BW. (40mm x 40mm) + (20mm x 20mm) = 2,000, the square root of which is 44.72mm Would you allow such a move? Or would you insist that the red Blade must be passed the blue element with its left rear-corner touching the blue left rear corner? (as shown in diagram 3, so that the red right front-corner moves exactly 1 BW/40mm directly to its left in order to end up as in diagram 2). Some Helpful Downloads can be found here: fanaticus-dba.wikia.com/wiki/Category:Reference_sheets_and_epitomes And here is the latest Jan 2019 FAQ: fanaticus-dba.wikia.com/wiki/FAQ_2019_1st_Quarter
My phone has glurged your diagram...I think I just made that word up...and I like it. The answer is, no. We don't allow it. This was done on purpose to weaken solid foot in difficult terrain. Joe Collins
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Post by stevie on Nov 26, 2019 12:51:03 GMT
Thanks for that Joe. I thought as much...mathematics does not lie.
This should help dispel certain parties that I know from saying “but it’s just not practical to measure things with such fine accuracy during a game”.
Seems that along with a dice, a ruler or tape measure or a selection of rods cut to length, plus a 1 BW square ‘Barker Marker’, a pocket calculator is also essential for playing DBA... ...and the notion that “distances can often be estimated visually without measurement” is nothing but a myth.
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Post by primuspilus on Nov 26, 2019 22:43:53 GMT
Stevie, I have never had an issue like what you describe. Since you can't close the door, split the difference.It makes little difference to the closing element whether it is halfway or two-thirds of the way to closing the door. Assuming you have infantry line in the rough. If it's a loner, measuring is easy.
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Post by stevie on Nov 27, 2019 10:45:41 GMT
Oh it’s ok Primuspilus. As I recall my blues attacked into rough going. One element held its ground with an equal score but the other one was killed and the red Blade pursued. In his next bound my red opponent wanted his victorious Blade to hard-flank the surviving blue element, and was a bit miffed when I pointed out that some bloke named Pythagoras (who isn’t even mentioned as a co-writer in the rules) said he couldn’t, as in rough going Blades only move 1 BW/40mm, and he’d need to move 44.8mm to swing round his furthest right front-corner in order to get both parties front-corners touching for legal conforming.
And you’re right...a wheel to the left with both parties left front-corners touching (so that he can claim an overlap) is the best he could do, and with a move of only 1 BW it’ll take two bounds to hard-flank from that position (by which time the move would be blocked by my advancing reserve Threat Zones).
So you can imagine his surprise when I also pointed out that troops with a move of only 1 BW/40mm couldn’t do a 180° about-turn, which even on a 15mm deep base is a distance of 42.7mm, if they are in rough or bad going! (unless they are fleeing of course, in which case the about-turn is free).
That’s when the discussion about finicky micro-measuring not being practical during a game, and should ‘oh that looks close enough’ be allowed.
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Post by Vic on Nov 27, 2019 11:31:02 GMT
I wouldn't allow it, no. I'm more flexible with complex movements or things that involve terrain and the like, especially because deployment and movement isn't laser-precise and there's some degree of fuzziness, but for sort of "in-place manoeuvres" such as this, if you can't, you don't.
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Post by arnopov on Nov 27, 2019 11:38:07 GMT
I have occasionaly used basic geometry during games. It's very convenient if the positioning is "clean". It's also pretty easy without a calculator, as you don't need the square root, it is sufficient to compare the squares.
One that comes comes up semi-regularly is trying to flank a 1.5cm deep unit that has recoiled twice: 7x7+4*4=65 > 8x8, so nope, not doable.
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Post by Simon on Nov 27, 2019 11:49:23 GMT
So you can imagine his surprise when I also pointed out that troops with a move of only 1 BW/40mm couldn’t do a 180° about-turn, which even on a 15mm deep base is a distance of 42.7mm, if they are in rough or bad going! (unless they are fleeing of course, in which case the about-turn is free). That’s when the discussion about finicky micro-measuring not being practical during a game, and should ‘oh that looks close enough’ be allowed. Actually not true Stevie - read the rules carefully - first sentence at the top of page 9. "Movement is measured in a straight line from the starting point of the furthest moving front corner of the single element or group to that corner's final position." That means that it can do an about turn with one BW movement if its front edge ends exactly where it was before. A sort of about turn and shuffle back a bit! Simon
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Post by stevie on Nov 27, 2019 12:15:32 GMT
Ah...good point Simon.
By an ‘180° about-turn’ I meant ‘changing-facing-without-any-positional-movement’... ...in other words picking the base up, turning it around, then putting it back in exactly the same unchanged location, but now facing in the opposite direction.
My fault for not being precise.
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Post by martin on Nov 27, 2019 12:30:08 GMT
So you can imagine his surprise when I also pointed out that troops with a move of only 1 BW/40mm couldn’t do a 180° about-turn, which even on a 15mm deep base is a distance of 42.7mm, if they are in rough or bad going! (unless they are fleeing of course, in which case the about-turn is free). That’s when the discussion about finicky micro-measuring not being practical during a game, and should ‘oh that looks close enough’ be allowed. Actually not true Stevie - read the rules carefully - first sentence at the top of page 9. "Movement is measured in a straight line from the starting point of the furthest moving front corner of the single element or group to that corner's final position." That means that it can do an about turn with one BW movement if its front edge ends exactly where it was before. A sort of about turn and shuffle back a bit! Simon Spot on, Simon 👍
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Post by bob on Nov 28, 2019 18:54:23 GMT
Isn’t the distance moved by an element facing north to be facing south, keeping the same footprint, just the diagonal of its base?
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Post by chaotic on Nov 28, 2019 21:53:31 GMT
Isn’t the distance moved by an element facing north to be facing south, keeping the same footprint, just the diagonal of its base? There are two schools of thought on this issue Bob. The first idea (concisely described by Stevie) relies on your implication that when an element turns to face the rear, its front edge replaces its rear edge. If this happens, the base rotates around the centre of the element, the front corners move to the positions previously occupied by the rear corners and the distance moved exceeds 1 BW. This is what happens when you physically turn the element on the table top. It seems intuitive, and if PB truly wanted to disadvantage solid troops in rough/difficult terrain, it might have been his intention. However the contrary idea argues that no "real life" unit would move like this. Indeed, hoplite and phalanx formations probably moved more like modern marching bands, where each file follows the leader around to reverse its formation. On the table, the element's front right corner and left corner exchange positions, so that the front right corner finishes exactly 1 BW from its starting position. The overall effect is that the front edge remains in its original position facing to its previous rear, with the rest of the element behind it, hence Simon's "about turn and shuffle back a bit". This is a strict, literal, interpretation of the rule and if adopted, it would allow solid foot to legally about-face in rough/difficult terrain. It implies that turning to the rear is quicker and easier than turning to a flank, and this also appears historically consistent for rectangular formations that would have their better armoured and more experienced soldiers in the front ranks, leading the way and facing the enemy. To address this thread's initial question, there is no doubt that in rough/difficult terrain, a solid element cannot turn to face its flank in one move. Again using the marching band analogy, it it a much trickier evolution to pivot on one corner, with troops needing to adjust their alignment in order to remain in formation as they rotate around that stationary point. In this respect, the rules seem to reflect reality. I'd like to believe that PB's intention was for the simpler, intuitive first option for reversing direction, but DBA seems to attract a lot of fairly legalistic rule analysis, so for consistency these issues are probably worth a mention in FAQ's.
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Post by medievalthomas on Nov 29, 2019 18:33:36 GMT
This stuff has been coming up for a while. As to Closing the Door in Rough/Bad - HF/Mounted can't do it and that's intential.
As to reversing direction - its real world more difficult than you think but the Napoleonic's with Spears school of thought likes these kind of drill based maneuvers. It also gets into whether you should measure by path of movement or final end points - while the second looks attractive it allows some undesirable teleportation around terrain etc.
A special rule used to allow closing the door regardless of geometry but this was jettisoned since BW movement allows it in the open and it was thought to be a desirable limitation of Heavies and Mounted in Bad/Rough.
It may have been wise to allow reversing by special rule though just to ease this rather tricky measuring concept.
TomT
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