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Soidog’s Blog


    • Evaluation of gambits

      I evaluated ten gambits with chess engines and I found that six of them were "unsound" to use Roman's terminology. The other four did not show an obvious weakness. I should add that I have no answer to the usual defense of gambits that they will s... | Read More

      • Jamalov
      • | Apr 25, 2015
      • | 408 views
      • | 3 comments
    • Claus Jensen's Najdorf killer: 6. h3

      As you may know Claus Jensen has been posting Youtube videos with his analysis of the 6. h3 response by White to the Sicilian Defense Najdorf variation. Here is one of his videos. https://www.youtube.com/watch?v=_Z8qNYEa0Vo I did some engine ana... | Read More

      • Jamalov
      • | Jan 22, 2015
      • | 451 views
      • | 0 comments
    • Samut Sakhon, Thailand

      chess.com members covpete1 and brownbird in samut sakhon, thailand | Read More

      • Jamalov
      • | Dec 14, 2014
      • | 507 views
      • | 4 comments
    • Rural Thailand

      If you ever get out of the tourism disneylands in Thailand you will find something that looks like this.  http://www.youtube.com/watch?v=pVo_nqWHmSk | Read More

      • Jamalov
      • | Nov 1, 2014
      • | 473 views
      • | 6 comments
    • A two dimensional measure of chess performance

      The proposed two dimensional measure of chess performance has more precision and discrimination power than the scalar measure because it contains more information by virtue of the fact that it is true to the trinomial nature of chess game outcomes... | Read More

      • Jamalov
      • | Sep 24, 2014
      • | 779 views
      • | 6 comments
    • 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
      • | 902 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
      • | 615 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
      • | 851 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
      • | 1211 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
      • | 3851 views
      • | 16 comments