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Member since Mar-29-07 · Last seen Feb-22-15
<Name: Arno Middelkoop
Sex: Male
Birthdate: 29 May 1988 (25 y.o.)
KNSB (Koninklijke Nederlandse Schaakbond) rating as of July 2013: 1805>

My name is Arno Middelkoop and I live in the Netherlands. I'm currently 25, and I've been playing this wonderful game from the age of seven.

In that year, 1995, I joined the local chessclub here in Zoetermeer, Botwinnik. I enjoyed playing with fellow novice yooth players, and I intended to become a better player than most of them and did that. Even so, in the six years to come I probably only reached an official rating ~1500, not being active in any external competition.

As of May 2013, my KNSB rating is 1805. In the past years my chess progression has been stagnant (from 1793 to just >1800 in two years), and definitely not as solid as I hoped it to be.

Besides chess I'm following a university course: Biomedical Sciences at the University of Leiden. As BSc I am now doing my final internship for MSc in epidemiology, doing research in orthopeadics.

Besides both chess and education I'm a Japanese RPG, Anime and Manga fan, although it has been less and less occupying the last years: I enjoy the franchise more than actually being an addict.

I (still) have a general addiction for World of Warcraft, playing MoP now and my rogue Qoko (Europian Frostmane) is still ahead of the curve raiding wise.

Where you find me here: I am almost always occupied on the daily puzzle, as well as screening and sometimes posting on the GotD. However, aside liking to comment on less common games, I started to lurk the recent tournaments a bit more, refreshing my grandmaster chess knowledge.

[Update: TheaN on 08-07-2013]

   TheaN has kibitzed 2012 times to chessgames   [more...]
   Feb-20-15 J Grefe vs A Karklins, 1973 (replies)
TheaN: Not all my variations are the most optimal (in D after 28...Kf5 29.g4+! mates quicker for example) but the principles of the posted variations are all correct.
   Feb-18-15 D Sengupta vs S Grover, 2014 (replies)
TheaN: Everything correct, except for variation C. which is also black's best try: After 19.O-O Nd7! 20.Qxe6 Rh7 gives white the most room to go wrong: [DIAGRAM] I opted 21.Nxe4? here but that was a rather quick observation. OTB I would have found 21.Nd5! to be much stronger. After 21.Nxe4? ...
   Feb-17-15 Gelfand vs Shirov, 1996 (replies)
TheaN: <TheaN: Nonetheless, the manouver with 29.Kc4 wins as well, it just goes a tad bit slower due to more spite checks.> Interestingly enough, I now analyze the manouver 29.Kc4!? Rf4+ 30.Kc5 Rf5+ 31.Kd6: [DIAGRAM] The only variation that does not evaluate mate on move 31 but instead
   Feb-16-15 T Fink vs E Rymar, 2005 (replies)
TheaN: Monday 16 February 2015 <27....?> Queen-sac Monday... wait... sometimes-rook-sac Monday <27....Rxh3+ 28.gxh3 Qxh3# 0-1>. The game itself is odd. I would be inclined to say white is won after 15.Bxg5 (to name the most characteristic position) but he seems to be completely ...
   Feb-13-15 M Parligras vs M Pereira Figueroa, 2005 (replies)
TheaN: <TheaN: Typical, I saw the second rook sacrifice as well, but I couldn't find a winning combination after 27.Bxe5 Bxg5 28.Rh1+ Bh6!? Also, is there anything definite against 27.Bxe5 Kg8? Will look into this one more, it's interesting.> Overestimation of the black resources, is ...
   Feb-12-15 Robson vs M Arnold, 2013 (replies)
TheaN: 31....Qf3 seems black's best defense, given it defends b7, blocks the f-file and threatens to trade queen. 32.Nxd6+ apparantly works, meaning it could be played after my 31....Qe2 as well. I had the idea of Qb6 though, so I do think I'll take credit for this one: after 31....Qf3 ...
   Feb-11-15 Yifan Hou vs D Howell, 2015
TheaN: <devere: <Laskerschueler: 37.Bd5! and she would be even happier :-)> Good point. But White was still winning until 45. g5?.> White had a definite better practical try playing 45.Re7 or 45.Ke3 first (both leading to different endgames). I especially like 45.Re7. After ...
   Feb-11-15 Blackburne vs H Charlick, 1885 (replies)
TheaN: Wednesday 11 February 2015 <22.?> Surprisingly easy Wednesday, that doesn't require much explanation. White clears c8-h3 with <22.Rd8+ Rxd8> to follow <23.Qxe6+ Rd7 24.Qxd7+ Kb8 25.Qd8# 1-0>. Black seems lost pretty soon, although such positions can sometimes have ...
   Feb-10-15 Judit Polgar vs Spassky, 1993 (replies)
TheaN: Got the combination, but my line with 14.Qb3+? is a blunder: black can abuse the position of the white queen after 14....d5 15.Ne6 Nc5! after which only 16.Nxc5 Bxc5 17.dxc5 keeps minor advantage for white. Always consider ...
   Feb-09-15 M Villanueva vs N Sanduay, 2005 (replies)
TheaN: <JohnBoy: Why did white not play 22.e8Q ? Is the resulting Q v 2 minors harder to win than the game sequence?> Looking at the potential complexity of the 2♖ vs ♗+2♘ I'd say no. After some calculating, they seem to evaluate similar at +10 and up. However... ...
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