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2020-06-11 22:08 DarkStoorM  
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Can anyone explain if this is solvable? I assume not. I think I tried all the combinations along with the diamond as a support, still nothing :D

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2020-06-11 22:48 nesdori  
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this is not possible. schlicktown engine must be peculiar; i don't know any other engine where this is possible.

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2020-06-12 14:57 nesdori  
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i tried the original exe and now i know what is the intended solution :D the cave is laid out correctly but the engine game uses (packer 5.3 de luxe) has a bug that moving objects can move over the edge if there's not titanium wall all around the cave. it doesn't work on the 1st row of the cave but rockford can step to the left on 2nd and 3rd row and it just disappears (it doesn't appear on the right side). then it's possible to move back to right and rockford appears again. the same goes for a fly. when it reached the edge it keeps moving to the left one step and after a while appears again. while the fly is not visible rockford can just run down evading it. so the cave relies on engine bug and it's indeed not possible with  krissz 's engine :)

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2020-06-12 15:10 DarkStoorM  
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Oh! Thanks for the explanation  nesdori . I assumed that was just a matter of the engine (just like some other caves).  
  
Is that the reason why all caves are surrounded by Titanium Wall (to prevent stepping out of the playfield)?

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2020-06-12 15:40 nesdori  
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 darkstoorm , that exactly is the reason. on bd1 and bd2 the cave is supposed to be always be surrounded by titanium wall, otherwise the functionality is undefined. the first and last line are in fact not scanned at all and any moving object will just freeze if it reaches the first or last line. outbox would work on the border in bd1 and bd2 too although that feature was more widely used on later engines.

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2020-06-12 17:02 Arno  
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ah! thanks for seeking this out. sometimes i'm also surprised by a cave seemingly not possible while other caves in the series looks well taken care by the author in design and tests. :-)