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2019-07-17 12:46 Piter  
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 krissz , i think that initial direction of butterfly should be set to right direction (so it would go down, not left). this makes cave solvable - otherwise it is, in my opinion, impossible.

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2019-07-17 20:53 krissz  
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The difference was the speed.

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2019-07-18 13:32 Piter  
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indeed.... :-)