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Eduardo Leon
Member since May-02-07
These are the three pillars of my life: math, music and chess.

   Eduardo Leon has kibitzed 1004 times to chessgames   [more...]
   Jul-09-20 K Richter vs L Abramavicius, 1930 (replies)
 
Eduardo Leon: Apologies. In the first line, 22.♘f6 does not give check.
 
   Jan-28-20 M Fierro vs O Zimina, 2006
 
Eduardo Leon: How did white manage NOT to win this?
 
   Jan-01-20 Flohr vs I Koenig, 1929 (replies)
 
Eduardo Leon: After thinking for a while, I found 40.♖c7. The threat of 41.♕b6+ is so strong that black is forced to play 40...♖xd6 41.♖xc8+ ♕xc8 42.♕xd6+. Not only is white a piece up. Also, the black king's position is precarious, and he cannot bring his
 
   Dec-23-19 Tal vs W Pietzsch, 1959 (replies)
 
Eduardo Leon: Somehow this is a King's Indian in which black didn't play f5. Weird.
 
   Dec-13-19 J Klinger vs W Arencibia Rodriguez, 1986 (replies)
 
Eduardo Leon: The first move is obvious. <33...h3+ 34.♔f3> Either 34.♔g1 or 34.♔f2 would be met with 34...♕xd4+, and this check prevents white's own 35.♖c7+. And, of course, 34.♔h1 ♕f1#. <34...♕f1+> Of course, not 33...♕xd4 ...
 
   Dec-07-19 Pachman vs Bronstein, 1946 (replies)
 
Eduardo Leon: Too famous to be a good puzzle.
 
   Aug-14-19 Shabalov vs J Aagaard, 1999 (replies)
 
Eduardo Leon: This problem was easy enough that I could solve it <twice> in less than three minutes, once incorrectly, and then once correctly. First the incorrect solution: <45...e3?> And white either loses the queen or get mated, right? Okay, no. <46.♖gxg7+ ♔h8
 
   Jan-10-19 Bologan vs M Hansen, 2011 (replies)
 
Eduardo Leon: I'm seriously out of practice. The first couple moves were kind of obvious: <34.♖xd5 cxd5 35. ♘b6+ ♔d8> Here I spent a couple minutes trying to figure out how white's remaining rook should infiltrate through the d file. This was the position in my ...
 
   Dec-21-18 S Knight vs V Georgiev, 2008 (replies)
 
Eduardo Leon: Not that difficult. <20.♕c4+ ♔f6 21.♖e6+ ♔xf5> 21...♖xe6 22.♕xe6# <22.d5!> Black cannot simultaneously stop both threats 23.♕f4# and 23.♕e4#.
 
   Jul-18-18 Botvinnik vs G A Thomas, 1936 (replies)
 
Eduardo Leon: <Jim Bartle: In his book he (Tal) says he took particular pleasure in defeating in a tough endgame a player (can't remember who) who'd said something along the lines of "Tal is an excellent GM in the opening, a brilliant GM in the middlegame, and an ordinary GM in the ...
 
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