Kindred’s look at “Dubious”

That term “dubious” has been around as long as chess articles appeared in print which goes back a couple centuries at least.  It is of course associated with an idea thought to be new in a position.  Perhaps one of the greatest examples comes out of what today is known as the Dilworth variation in the Ruy Lopez.  It was introduced by Jackson Showalter over a hundred years ago.  He was considered by many as the top US player.

After the moves 1. e4  e5  2. Nf3  Nc6  3. Bb5  a6  4. Ba4  Nf6  5. O-O  N:P  6. d4  b5  7. Bb3 d5  8. P:P  Be6  9. c3  Bc5  10. Nbd2  O-O  11. Bc2  Black discovered a sharp opening attack line starting with 11. … N:f2 as gambled on by the Polish player Jan Kleczynaski in Paris 1924. It was perhaps this game that drew attention to this early attack sacrifice opening up the White position to assault.

What has become one of the standard opening lines goes 12. R:f2  f6 which Mikhail Botvinnik played against Smyslov: 13. e:f6  Q:f6 14. Ng3  B:f2/ ck.  15. K:f2 Ne5  with a strong attack.  For example, 16. Qd4 Rae8 17. Be3 Bg4 ( if 16. Kg1 Black continues with the sharp 16. …Rae8  17. Be3  N:f3/ ck.

16. Nf5  Bg4  17. Q:d5 ck.  Kh8  18. Qe4  g6! with a very strong position. In actuality, Kleczynaski erred with 18..Qh4/ck. which let White  go on and win the point.

In 1941  Dr. Vernon Dilworth, playing in the Irish Correspondence Championship essayed the attack which now bears his name, having achieved considerable success with supporting analysis.  It took 17-years and the whole concept is played occasionally even today.  (In one of my articles featuring the Dilworth variation, I presented my win versus Denis Strenzwilk who recently passed away.  Denis was the finest of gentlemen met in battle royale.)




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