@gmacpro All worked zappers can be seen.There's no hidden zapper.It's a logic level.No tricks required.
@Mike_CN - Thanks for the reply - I was going with No tricks but just wanted to confirm. I'm coming up with lots of dead ends for both B and Rs. EDIT: It may be logic but all the bugs makes it extremely hard to see the logic - spend enough time on it - I'm done.
Spoiler: solution 1. R foots on P and gets down.R goes to the point where B starts(the entrance above B marks as the first entrance).Then R gets up. 2. R enters into the fortress(marking as second entrance) with B's help.B foots on P and goes to the place where R starts. 3. P goes to the point where B starts. And goes to the front(the corner with two sliders,under the sixth and seventh entrances). 4. R pushs the first ball. R foots on P and goes to push the other balls. All help by B.And B follows R. 5. R and B go back. R goes to the end from the third entrance. PS: don't let B enters into any entrance except the fourth and fifth entrance(no-fire entrances).
@Mike_CN - I was doing the first part of Step 1 but 'First Entrance'? Is this the one with the rail? If so, no bot enters there - right? I was doing Step 2 and Step 3. Can't see Step 4? B is where R starts, P is in the opposite corner of B and R is walking back and forth over the three metal sections that don't move. If B steps on the first metal section from the stone pillar. B can only move to the lower stone pillar, so can't force R into the fortress to drop the ball. What am I missing? EDIT - I see now - B can't tap on the 1st - must be the third. Like I said, can't see the logic because of the bugs.
This level is definitely very tricky. I managed to push the 4 balls fairly quickly but I could not find a path to the win until I read that B and R have to go all the way back. That did the trick although could not see a path to the win. R walked around for a while and hit the win. I am still not sure exactly how R did it. Edit: I now see “no tricks”. That is technically true but I used autopilot to get B at the spot where he should be. B, R and P do not always behave logically.
@GFJ - There's no tricks according to the author - I assume, the author meant, for B as there are elevated zappers so R can walk over a rail. Some authors call that R behaviour but I call it a trick. Take away the zappers or the lift and R will not pass.
I found this level a struggle . I got stuck for a while at the same section as @gmacpro did and I don’t like the solution to that bit. I was sure i was on the wrong gameplay and experimented with raising R onto the draggable from the start. Anyway eventually found the correct gameplay but R fell off level twice. My win sounds very similar to the spoiler solution.