Reply to Re: Two interesting puzzles
If you don't have an account, just leave the password field blank.
One solution to the first puzzle is as follows:
Start: PPPCCC|
CC -> : PPPC|CC
<- C : PPPCC|C
CC -> : PPP|CCC
<- C : PPPC|CC
PP -> : PC|PPCC
<- PC : PPCC|PC (the tricky step)
PP -> : CC|PPPC
<- C : CCC|PPP
CC -> : C|PPPCC
<- C : CC|PPPC
CC -> : |PPPCCC
Start: PPPCCC|
CC -> : PPPC|CC
<- C : PPPCC|C
CC -> : PPP|CCC
<- C : PPPC|CC
PP -> : PC|PPCC
<- PC : PPCC|PC (the tricky step)
PP -> : CC|PPPC
<- C : CCC|PPP
CC -> : C|PPPCC
<- C : CC|PPPC
CC -> : |PPPCCC
