S2T2

Jim Randell 8:59 am on 14 November 2025 Permalink Reply
Tags: by: Graham Smithers ( 82 )   

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  Jim Randell 9:00 am on 14 November 2025 Permalink | Reply

  Here is a solution using the [[ SubstitutedExpression.split_sum ]] solver from the enigma.py library.

  The following run file executes in 84ms. (Internal runtime of the generated code is 482µs).

  #! python3 -m enigma -rr
  
  SubstitutedExpression.split_sum
  
  "THE + TOP + PAPER = TIMES"
  --extra="R % 2 == 1"
  --answer="TEASER"
  

  Solution: TEASER = 809205.

  The alphametic expression corresponds to two possible sums:

  830 + 867 + 79705 = 81402
  860 + 837 + 79705 = 81402

  H and O are 3 and 6, but we don’t know which is which. The other values are fixed.

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  Ruud 8:41 am on 15 November 2025 Permalink | Reply

  Note that this extremely brute force solution requires istr 1.11.1 .

  import peek
  import istr
  
  with peek(show_enter=False):
      for t, h, e, o, p, a, r, i, m, s in istr.permutations(range(10)):
          if istr(":=teaser").is_odd() and istr(":=the") + istr(":=top") + istr(":=paper") == istr(":=times"):
              peek(teaser, the, top, paper, times)
  

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