Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Hmmm..., looking at it again, I can see that it might be a bit confusing.

If you uncomment the print line in HisTry and MyTry, you get more verbose reporting about the results of each possibility.

Roll 1 => [0] Starting with 0
This is where we start the game, with both players @ 0.
In later rounds, the round could start with several possibilities (e.g. Roll 7 => [14, 15]), and each is explored in turn.
------ His possibles => [6]
we try all 6 possibilities for the die in HisTry But, $new = move($start,$die) will adjust the output if it is a prime or a square before returning the value, and validHim($new) knocks out any of these that won't be valid final values.

So for the first roll :

Him => 0 + 1 => 1 => 0 0 Him => 0 + 2 => 2 => 3 0 Him => 0 + 3 => 3 => 5 0 Him => 0 + 4 => 4 => 1 0 Him => 0 + 5 => 5 => 7 0 Him => 0 + 6 => 6 => 6 1 a b c d e a = start b = die roll c = start + die roll d = adjusted down for square, up for prime. e = is it a valid final number ?
Scores of 1,4 move down to the next square, and 2,3,5 move up to the next prime.

Since we have to end up with His score twice mine, his end number must be even, so this only leaves 6 from the first roll.

Do the same for Me, but matching possibilities are only those where his roll ends up as twice mine.

My Matching possibles => [3]
And carry forward to the next round the sequence of final values for Me.
In this case, I end up at the end of Roll 1 with a 3 as the only possible value that is valid under the contstraints.
Carrying Forward => [0, 3] ----- Roll 2 => [3] Starting with 3 . . . My final Sequence => [0, 3, 4, 7, 10, 12, 14, 15]
The last line means that it found exactly one final set of rolls that would meet the constraints, and Me end up with 15, and Him on 30.

Note that several of the rolls carry forward multiple possible routes to the next round where they then get eliminated, and in Roll 5,6, we can get from 10=>12=>15 or 10=>13=>15 via 2 different routes but, since the answer is the same we don't care.

Hope that helps explain it.
You can also uncomment the Data::Dumper->Dump lines if you want to see the internal tables it uses build up during the game.

In reply to Re: Re: Solver for Sunday Times teaser 2021 by Brovnik
in thread Solver for Sunday Times teaser 2021 by Brovnik

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others having an uproarious good time at the Monastery: (7)
    As of 2020-07-14 15:51 GMT
    Find Nodes?
      Voting Booth?

      No recent polls found