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Member since Jun-28-08 · Last seen Jan-28-22
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
   Current net-worth: 2,010 chessbucks
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   agb2002 has kibitzed 6289 times to chessgames   [more...]
   Jan-27-22 Plachetka vs Gernot Plank, 1991 (replies)
agb2002: White has a pawn for a bishop and a knight. The open g-file suggests Qg2 and Qg4 (surely stronger than the prosaic Bxf8). In the case of 20.Qg4: A) 20... Nf4 21.Bg7+ Kg8 (21... Bxg7 22.Qxg7#) 22.Bxf6+ Ng6 (22... Nxg2 23.Rxg2#) 23.Qh4 Qc6 (due to Qh6 and Rd3-Qxh7+) 24.fxg6 fxg6 ...
   Jan-26-22 Pillsbury vs NN, 1893 (replies)
agb2002: <Teyss ... For what it's worth SF gives +148 to 37.Rc6 (41 ply) versus mate in 20 to 37.Qxg5+ as noted by Mel Gibson. So yes the latter is better (unless you really like Q vs R endings) but first you have to check Black's options on the 39th move as <agb2002> did.> ...
   Jan-25-22 Pomar Salamanca vs R Wade, 1946 (replies)
agb2002: White has a rook and a pawn for a bishop. Black threatens gxf5 and Bxg3. The bishop on e8 controls both promotion squares. This suggests 46.Bxg6: A) 46... Bxg3 47.hxg3 A.1) 47... Kxg6 48.c7 Bd7 49.c8=Q Bxc8 50.e8=Q+ wins. A.2) 47... Bxg6 48.c7 wins (48... Bf5 49.e8=Q). A.3) ...
   Jan-24-22 A H Robbins vs Showalter, 1890 (replies)
agb2002: <Dionysius1: <agb2002> If you don't mind me asking, is the way you write up the solution actually how you think of the position when you're trying to solve it?> Normally, yes. The material balance and searching for threats are some kind of warming up. Once it seems to me
   Jan-23-22 A Istratescu vs Golubev, 1994 (replies)
agb2002: Black has the bishop pair for both knights. The first idea that comes to mind is 25... Rxc3 26.bxc3 Qc6 but is met with 27.Rd3. Another option is 25... Rd4 and if 26.Nxd4 then 26... exd4 27.Nd5 (27.Ne4 Qxa2+ 28.Kc1 d3) 27... Qc6 looks like a much improved version of the idea above.
   Jan-22-22 J Hellsten vs D Flores, 2006 (replies)
agb2002: I missed a mate in few moves in my line B: 28.Qh5 instead of 28.Rxf6.
   Jan-21-22 M Mchedlishvili vs K Shanava, 2017 (replies)
agb2002: White has a bishop and a knight for the bishop pair. Black threatens Nxb3. The only promising move seems to be 17.Qa4+: A) 17... b5 18.Bxb5+ axb5 19.Qxb5+ A.1) 19... Bd7 20.Nxd7 Qxd7 21.Nc7+ Ke7 (21... Kd8 22.Rfd1 wins decisive material) 22.Qxd7+ (22.Qc5+ Qd6 23.Nd5+ Ke6) 22... ...
   Jan-20-22 Firouzja vs Lupulescu, 2019 (replies)
agb2002: Black has a pawn for a knight. The white bishop protects b2. This suggests Bc5, Rc4 and Ra4 to eliminate it but White has c3. Another option is 24... axb2+ but after 25.Bxb2 Ba3 26.Nxa3 Rxa3 27.Qxd5 looks winning for White. I don't know. I'd probably try 24... Ra4 (the other rook ...
   Jan-19-22 O Bernstein vs F G Jacob, 1907 (replies)
agb2002: White has a knight and a pawn for a bishop. Black threatens Qxf2+, simplifying the game and recovering the pawn. White can deliver mate with 38.Rh7+ Kxh7 (38... Kg8 39.Qxf7#) 39.Ne5+: A) 39... Kg8 40.Qxf7+ Kh8 41.Ng6#. B) 39... Kg7 40.Qxf7+ Kh6 (40... Kh8 41.Ng6#) 41.Qg6#. C) ...
   Jan-18-22 E Delmar vs F Roser, 1876 (replies)
agb2002: Black threatens cxb6. The pawn on c7 blocks the action of the rook on b7. This suggests 20.Qxc6: A) 20... cxb6 21.Qxd5+ Kh8 22.Qe5+ and mate in two. B) 20... Rf7 21.Qxd5 wins two pawns at least (21... cxb6 22.Qxf7+ and mate next). C) 20... Rd8 21.Rxc7 traps the queen. D) 20... Qd8
(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!


Jul-22-12  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!

Oct-01-12  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>

Nov-14-12  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.
Jan-18-13  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>

Jan-19-13  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.


Nov-01-13  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,


Mar-05-14  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?

Mar-06-14  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.)

Mar-08-14  LIFE Master AJ: S Williams vs The World, 2013

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

Jun-21-14  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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