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Soidog’s Blog


    • The Elo rating system is seriously flawed

      A two dimensional measure of chess performance is presented and it is shown to have more information and a greater power of discrimination than scalar measures because it does not rely on scoring. The scoring procedure used by scalar measures to r... | Read More

      • Jamalov
      • | Aug 28, 2014
      • | 247 views
      • | 0 comments
    • The relative playing strength of chess players

      The conventional method of rating chess players uses a procedure called "scoring" to reduce a trinomial process to a binomial making it possible to rate chess playing strength with a single scalar measure. This simplicity is achieved at a cost bec... | Read More

      • Jamalov
      • | Aug 11, 2014
      • | 271 views
      • | 0 comments
    • Pairwise comparison of chess opening variations

      SUMMARY: Pairwise comparisons show that there is no difference between the B70 Sicilian Defense/Dragon Variation and the B90 Sicilian Defense/Najdorf Variation in terms of the probability vector. The data are consistent with our null hypothesis t... | Read More

      • Jamalov
      • | Jul 30, 2014
      • | 302 views
      • | 0 comments
    • Cornered knight

      The corner knight cannot escape once the king moves to the position shown. Something to think about if your tactic or strategy involves a knight in the corner.   | Read More

      • Jamalov
      • | Mar 20, 2013
      • | 869 views
      • | 5 comments
    • The value of opening lines

      Do some opening lines favor white and others black? Or are they optimized to maintain a neutral position? To answer this question I selected 190 commonly played opening lines (out of thousands) from the "opening theory" book available online at wi... | Read More

      • Jamalov
      • | Mar 17, 2013
      • | 2669 views
      • | 15 comments
    • A comparison of the A00 Irregular Openings

          The data for the discussion below appears in a pdf file that I uploaded to a pdf hosting site.The pdf document was created from an Excel spreadsheeet. It lists the Irregular Openings twice. On page 1 they are listed in conventional seque... | Read More

      • Jamalov
      • | Mar 8, 2013
      • | 1204 views
      • | 2 comments
    • Black's defense against 1. e4

      I looked at eight different responses to 1. e4 listed in chess opening theory. They are c5, d5, e5, c6, d6, e6, g6, and Nf6. For each response I played out 10 mainline opening moves and then compared the relative advantage gained by black in eac... | Read More

      • Jamalov
      • | Feb 26, 2013
      • | 8559 views
      • | 18 comments
    • Albert Einstein

        As this blunderfest should make it very clear, just because a guy came up with the theory of relativity (to which he was led by Maxwell's equations) does not mean he was a good chess player nor that he was a general purpose all knowing wise ... | Read More

      • Jamalov
      • | Feb 23, 2013
      • | 1236 views
      • | 4 comments
    • Retirement

      The things that occupy my life these days are mostly things I never did before I retired. Take for example chess, golf, the guitar, living in Thailand, traveling around in SE Asia, learning different cultural practices and different languages. I... | Read More

      • Jamalov
      • | Feb 22, 2013
      • | 1097 views
      • | 10 comments
    • How to use an engine in your online game legally

      I could not get this thing to format correctly in this editor and so I am posting a link to a pdf file. Hope to get some feedback.  http://freepdfhosting.com/fd92018e62.pdf   Cha-am Jamal Thailand | Read More

      • Jamalov
      • | Feb 19, 2013
      • | 869 views
      • | 6 comments