Revenge of the Lemmings - Backroute fixes for v5

[mobius]

I've been re-watching Kaywhyn's LP of the version 4 of the pack and noting backroutes and other issues. These are just notes so far and have not been tested.

Picnic:

Probably not going to say much as most of these are <do anything you want> levels.

Devious:

11 - Cry for me - make  central pillar taller + add one way wall facing left

14 - eight little problems - this level has an embarrassing mistake. Can't believe this wasn't caught this sooner. I've edited it myself just now but I'll have to test later. The upper right most exit should not walk freely to the exit; that should be a splat fall.

17 - Keep it simple - make horizontal piece over gap longer so building from left isn't possible

21 - Delimiter - make gap larger, increase builder by 1


Not much else yet: its time consuming and my time is limited these days sadly.

[Proxima]

Thank you for getting this started 

A reminder to anyone who wants to contribute: the most helpful format is a description (video link will do) of both the backroute and the intended solution -- not just a fix suggestion, because if we can all see the backroute, we can all put our heads together to come up with the best fix.

Link to kaywhyn's LP of version 4

Link to kaywhyn's LP of version 2

I have a couple of backroutes of my own to contribute:

1-39 Access Denied (Ben Bryant):

Spoiler

Intended solution: Bash right. Climb up, mine down the stack of three white blocks. Mine down the one-way wall. When the climber returns, mine to the enclosed exit; build over it. Bash left and mine to release the crowd.

Backroute 1: Bash right twice (under the enclosed exit) and interrupt the basher to get up.

Backroute 2: Bash right. Climb up; mine down from the top-left corner of the one-way wall so the lemmings will checkerboard through to the exit. Mine and bash under the exit; build up to the first miner tunnel.

3-36 Pyramid Puzzle:

Spoiler

Haven't found the intended solution, but this is almost certainly a backroute. Hold the crowd between two blockers, both on 2-brick bridges, while one builds off to the left (4 builders) and becomes a blocker. Release the left blocker, then release the right one with the last lemming. The newly released blocker mines to turn around; the other lemming can build to the right wall to turn. Build to the exit.

[Proxima]

A reminder to anyone who wants to contribute: the most helpful format is a description (video link will do) of both the backroute and the intended solution -- not just a fix suggestion, because if we can all see the backroute, we can all put our heads together to come up with the best fix.

And indeed "Cry for me" is a perfect illustration of this, because mobius's suggestion doesn't fix the backroute at all.

Spoiler

Intended solution: First top lemming builds to the red terrain; bash and mine to the exit. Two will slip past; make them floaters. One climbs up, builds to the exit; link the bottom crowds with a basher, build over the bash tunnel, and make everyone climb.

Backroute: First top lemming builds to the middle pillar, then to the exit. Four will slip past; make them floaters. Do the rest as in the intended solution.

(I don't remember exactly how I know the above-described solution is intended, but I remember the level from the Cheapo days, and I distinctly remember that at some point this was confirmed.)

A better fix is to reduce the floaters to 2, or increase the RR so that more lemmings fall past if you attempt the backroute. In Lix, the spawn interval is 15, corresponding to RR 88; in RotL v4 the RR is 80.

[mobius]

reminder to change "minimac"'s name to "Minim"