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Member since Jun-28-08 · Last seen Oct-31-14
I'm an applied mathematician who lives in the south east of Spain.

My approach to the puzzles is similar to that of David Zechiel (User: dzechiel): I first write the variations I find in a reasonable amount of time (using the puzzle diagram only) and post them before watching the game or other's comments. Then I have a look at them and try to be critical with my work. I apply the touch-move rule to my posts (see Unzicker vs Fischer, 1960). I hope to improve my tactical vision this way.

Often I cannot even spend a couple of minutes looking at the diagram (work, family, other interests, etc.) so I try to blind solve it along several breaks. My first attempt was R Vera vs S Garcia Martinez, 2001 and although the variations I found were not very deep I felt quite satisfied with the experience.

>> Click here to see agb2002's game collections. Full Member

   agb2002 has kibitzed 3076 times to chessgames   [more...]
   Oct-30-14 A Rodriguez Vila vs G Kanefsck, 2007 (replies)
agb2002: White has the bishop pair and a pawn for a bishop and a knight. The black queen protects the rook on d8. Therefore, 30.Qb4: A) 30... Qxb4 31.Rxd8+ Bc8 32.Bxd5+ Kb8 33.Bf4+ Qd6 34.Bxd6#. B) 30... Qd7 31.Qf8 Rc8 32.Rxc8+ B.1) 32... Bxc8 33.Bxd5+ Kb8 (33... Qxd5 34.Qxc8#) 34.Bf4+ Qc7 ...
   Oct-29-14 T Schmehl vs A Simonov, 2004 (replies)
agb2002: White has the bishop pair for a bishop, a knight and a pawn. Black threatens 15... Nxd2 16.Bxa6 Nxf1 17.Bxc8 Qxc8 simplifying the position. The black castle look defenseless which invites to play 15.Bxh7+: A) 15... Kxh7 16.Ng5+ A.1) 16... Kg6 17.Qg4 f5 (17... Qe7 18.Nxe6+ and mate ...
   Oct-28-14 A Herzog vs K Petschar, 1994 (replies)
agb2002: White has a knight and three pawns for two rooks. Black threatens 28... Qa(c)1#. If 28.Qxa6+ the black king escapes via b4. Hence, 28.b4+ Qxb4 29.Qxa6#.
   Oct-27-14 NN vs V Grimm, 1864 (replies)
agb2002: Black has two pawns for a knight. Yet another smothered mate: 12... Qg1+ 13.N(R)xg1 Nf2#.
   Oct-26-14 Nakamura vs Caruana, 2014 (replies)
agb2002: This could be the first victory of Caruana in this tournament, against the first placed player.
   Oct-26-14 Shabalov vs Aronian, 2004 (replies)
agb2002: Black is one pawn down. White threatens 22.fxg4. Black can attack the white castle with five pieces. The rook on g6 x-rays the white king. This suggests 21... Bxf3, to pave the way for the heavy pieces: A) 22.Nxf3 Bxg3 A.1) 23.hxg3 Rxg3+ 24.Kf2 (24.Kh2 Qh3#; 24.Kh1 Qh3+ 25.Nh2 ...
   Oct-25-14 Reti vs Znosko-Borovsky, 1922 (replies)
agb2002: White is one pawn down. The white pieces look ready for the assault of the black castle. The weakness of the dark squares invites to play 22.Nxf7, clearing e5 for the bishop: A) 22... Rxf7 23.Be5+ A.1) 23... Kf8 24.Qxh6+ Ke8 (24... Ke7 25.Qd6+ Ke8 26.Bf6+ and mate in four; 24... ...
   Oct-24-14 Karpov vs Yusupov, 1989 (replies)
agb2002: The material is identical. The rook on c1 x-rays the black queen and the bishop on b2 x-rays the pawn on e5. These details suggests 16.Nb5: A) 16... cxb5 17.cxb5 A.1) 17... Nc5 18.Bxe5 A.1.a) 19... Nxb3 20.Qe3 with the double threat 21.Bxc7 and 21.Qxb3 seems to win the knight. ...
   Oct-23-14 G Benini vs Reggio, 1911 (replies)
agb2002: White has a knight for a bishop and three pawns. Black threatens 30... Bxh3. The bishop prevents the typical maneuver 30.Rh8+ Kxh8 31.Qh3+. Therefore, 30.Rxc8+: A) 30... Rxc8 31.Rh8+ Kxh8 32.Qh3+ Kg8 (32... Rh4 33.Qxc8+ Qe8 34.Qxe8#) 33.Qxc8+ Rf8 34.Qe6+ Kh8 (34... Rf7 35.Qxf7+ ...
   Oct-22-14 Beliavsky vs Vasiukov, 1979 (replies)
agb2002: White is one pawn ahead. Black threatens 34... Qxh5. Four pieces aim at the black castle and the black rook is defenseless. These details invite to play 34.Bxg5: A) 34... hxg5 35.Qxg5 A.1) 35... Rxd4 36.Qh6+ Nh7 (36... Qh7 37.Qf6+ Qg7 38.Qxg7#) 37.Rg7 Qxh5 38.Rxh7+ Kg8 39.Qg7#. ...
(replies) indicates a reply to the comment.

Calculo, luego existo

Kibitzer's Corner
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Jun-14-12  LoveThatJoker: <agb2002> Do you have any idea who this is?

Look at Book 3 here

I will give you anyone you want in exchange for this one.


Jun-15-12  LoveThatJoker: <agb2002> Thank you for getting back to me on that!


Premium Chessgames Member
  Patriot: Hi <agb2002>! <I agree. I still have to rethink my move selection algorithm.> Usually you latch right on to the correct move. Do you consider other candidates or do you usually only post the principle candidate after analysis? For example in today's puzzle, I thought 22.Bh6 was a good candidate and 22.Nb5 was interesting, although I didn't post anything about it initially. 22.Rxf6 was the first move I saw but I didn't see the Kh1, Rg1 idea and thought it was unnecessarily complicated.

By the way, good job on the POTD!

Premium Chessgames Member
  morfishine: Hello <abg2002>! Nice write-up in the Sunday POTD! I only noticed <25...Bxe4> immediately after posting 25.Rxb4 <25...axb4>. I briefly considered deleting my post then adding this as a possible improvement but decided to leave these separate.

I'm a bit surprised there wasn't more discussion on <25...Bxe4>

Premium Chessgames Member
  Patriot: Hi <agb2002>! Good job on your win! I read your comment about losing the exchange before going over your game so when you played 20.Rae1 I figured the rook on f1 was going to be *the* piece. I've lost the exchange quite a few times like this so I'm very suspicious about moves that trap the rook.

I had a question about 11.Nxe7+. What prompted you to play this? That knight is a real thorn thanks to 9...b6?. I wouldn't recommend trading it until forced to do so since the bishop isn't going anywhere. That's similar to what Dan told me once when I captured a pinned piece. He said "You should almost never capture unless they threaten to break the pin or capture the pinning piece, for example." By not capturing, you have time to build your position further while he is left dealing with the situation.

It really looks like you did have a bad day though--we all have them! I just thought I'd mention the knight capture though because that move really stood out with me. But it's probably something you wouldn't have done on any other day!

Thanks for sharing!

Nov-25-12  ShahMaat: comment.New guy on the block.I enjoy the dialogue between the users.I thank you all,and look forward to crossing swords with you!Unrated old fart.
Premium Chessgames Member
  Patriot: Hi <agb2002>! I loaded your game into Fritz and followed it. You played a nice game against Houdini! On move 35 (white to play), how did you evaluate the position:

click for larger view

I might think black is a little better, and Houdini agrees after 22-ply. You said 35.Bf1 was better but at 22-ply, it agrees with you! <35.Ba6>

Premium Chessgames Member
  Patriot: Hi <agb2002>! <Perhaps the note below the players showing the engine which performed the analysis misled you.> Yes this is exactly what happened--I completely misread that (sorry).

Your plan, having the outside passed pawn, is a good one. Nice game!

Premium Chessgames Member
  Jimfromprovidence: Thanks for the constructive feedback concerning Saturday's puzzle.


Premium Chessgames Member
  Patriot: <<agb2002>: <Patriot: <agb2002> <Pattern recognition finds the mate scheme...Therefore...> If the pattern led you to the sequence, I'm impressed. I had to work out a sequence before visualizing the position as a win.> You surely have already noticed that in competition chess you never have enough 'stored' patterns.> Oh definitely! I don't doubt that you solved it this way, but it struck me oddly because I have listened to NM Dan Heisman analyze <CG> problems that I gave him, "live". And I'm quite certain he would not have worked backwards from the pattern you illustrated. And I don't think, even knowing the pattern, I would ever be able to link the pattern to the problem and solve it backwards. That's one heck of a skill!
Premium Chessgames Member
  agb2002: <Patriot>

Thank you! The way you describe the solving process reminds me of Raymond Smullyan logic puzzles in his "The Chess Mysteries of Sherlock Holmes".

Dec-04-13  LoveThatJoker: <Dear CG Friends>

I know this is irregular, but I am stepping outside of the box, for you to view truly one of the most exciting alternate solutions ever posted on the daily puzzle:

G Weissgerber vs A Van Nuess, 1933

With friendship, respect and gratitude for your time in looking at this,


Premium Chessgames Member
  LIFE Master AJ: Hello:

Game Collection: "Chess-Games" >Problem of The Day< (2014)

I am trying to update a collection ... with all the puzzle for this year.

Have you missed any days this year ... that you know of? If so, could you help me to locate the missing days?

Premium Chessgames Member
  LIFE Master AJ: << Hello LMAJ, according to CG I have posted (or perpetrated) an analysis every day this year with the sole exception of Feb 17th (I don't remember what happened that day). If I can help you just let me know. >>

Cool! Then I will be looking through your posts and trying to update my collection. (I am glad that you don't mind.)

Think you could ask any of your friends and find out what the POTD for Feb. 17th was? (Ask them to leave a comment in my forum.)

Premium Chessgames Member
  LIFE Master AJ: S Williams vs The World, 2013

Weren't you a big-time member of the team?

Premium Chessgames Member
  Patriot: <agb2002> Thanks! I haven't been logging onto the site much recently--it's been about a week since the last time. I seem to be pulling away from chess more and more these days but that's how things go sometimes. Take care.
Premium Chessgames Member
  agb2002: Yesterday in San Francisco CA.

Today in Lodi CA.

Premium Chessgames Member
Premium Chessgames Member
  agb2002: Now in Baltimore MD. About 10000 miles in three days.

<OCF> I didn't know that song by CCR.

Premium Chessgames Member
  agb2002: Today in Milwaukee WI.

Impressive aerial night view of Chicago.

Premium Chessgames Member
  agb2002: Good, energetic concert by The Black Keys yesterday in Chicago.

About to fly to Cleveland.

Premium Chessgames Member
  agb2002: In Houston now.
Premium Chessgames Member
  OhioChessFan: Where in the world is agb2002?

Premium Chessgames Member
  agb2002: <OhioChessFan: Where in the world is agb2002?>

LOL. Tonight in Buffalo. Tomorrow in New York, London and back to Spain.

Business this time. Tourism next. Perhaps.

Premium Chessgames Member
  OhioChessFan: Shuffle Off to Buffalo-

New York, New York-

London Calling-

Never Been to Spain-

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