Follow-on to
this puzzle (as suggested by LazyScot). If you haven't tried that puzzle yet, do so now.
Having gained your freedom, by luck or judgement, after a few months you succumbed to temptation, were caught, and have ended up in the gaol again.
The same chance to win your freedom is given to you (see the above link to the original puzzle), with one important difference. As a second-time offender, you may only choose 20 coins.
1. What strategy maximises your chance of gaining your freedom?
2. Using this strategy, how likely are you to gain your freedom?
As usual, answers in
please, so everyone can have a go.
I haven't thought about this puzzle myself yet, so I don't know what the correct answers are! Hopefully I'll have answers to post in a few days.