[Retros] Non-Chess Retrograde Analysis

[Mark Thornton]

In cricket, there are 3 levels at which the score is kept: 

    (a) the scoreboard, which summarises the current state of play, for the benefit of spectators in the ground
    (b) the scorecard, a more complete summary of play, used by TV and newspapers
    (c) the scorebook, the official and complete record of the game.

This opens the door to cricket retro problems, e.g. deduce (b) from the evidence of (a) or (c) from the evidence of (b).  It happens very rarely, but I have spotted instances in real games where such deductions are possible, normally for a fleeting moment only.  I have also seen a handful of composed scorecards, from which the solver is asked to deduce information about the contents of the scorebook.  These occasionally appear in British publications on recreational mathematics.

Best wishes
Mark 
  ----- Original Message ----- 
  From: "Bernd Gräfrath" 
  To: The Retrograde Analysis Mailing List 
  Sent: Saturday, June 01, 2013 12:19 PM
  Subject: [Retros] Non-Chess Retrograde Analysis


  For more non-chess retrograde analysis, see

  http://www.reocities.com/joe_kisenwether/Retro.html

  Bernd
    
  Gesendet: Samstag, 01. Juni 2013 um 12:25 Uhr
  Von: "Joost de Heer" <joost at sanguis.xs4all.nl>
  An: "The Retrograde Analysis Mailing List" <retros at janko.at>
  Betreff: [Retros] Draughts proofgame
  Hello,

  I thought that maybe some people would find this interesting: a
  proofgame in draughts. Not an exact proofgame unfortunately, these are
  almost impossible to realise.

  http://laatste.info/bb3/viewtopic.php?f=65&t=276&start=225#p99885

  This is the longest possible game without captures or promotions.

  Joost
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