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TheaN
Member since Mar-29-07 · Last seen Oct-20-19
<Name: Arno Middelkoop
Sex: Male
Birthdate: 29 May 1988 (27 y.o.)
KNSB (Koninklijke Nederlandse Schaakbond) rating as of November 2015: 1793>

My name is Arno Middelkoop and I live in the Netherlands. I'm currently 27, 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 November 2015, my KNSB rating is 1793. In the last two years my chess progression has been stagnant, now I'm trying to improve openings and getting a solid tactical vision. I started playing on Chess.com under the name Qoko, yet I'm still somewhat rusty in Blitz (only ~1550).

Me outsidei of chess: I'm a graduated Biomedical Scientist at the University of Leiden, with a speciality in epidemiology, still looking for a PhD. 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 yet I have been playing much less the last year.

Where you find me here: I am almost always occupied on the daily puzzle, although I do not post as often lately.

[Update: TheaN on dec-2015]


   TheaN has kibitzed 2438 times to chessgames   [more...]
   Oct-20-19 N Pokern vs M Bassler, 1981 (replies)
 
TheaN: One trap I could see Black fall for is <44....Rd6?!> which seemingly picks up e6 straight away (45.e7 Re6 -+) but this instant shot doesn't work because <45.Bd5!> defends the pawn just as much and now Black has to actually retreat to win <45....Rd8! (Rxd5? 46.e7 +-) ...
 
   Oct-18-19 V Erdos vs H Steingrimsson, 2017 (replies)
 
TheaN: Some key moves here: after the relatively straightforward <19.Rxd5! exd5 20.Qf5 ±> White prepares a king side invasion with a relatively harmless exchange sac (harmless for himself, that is) as the Rf8 is not helping Black at all. The threat's Qg4-Nh5 with mate or Nxf6+. ...
 
   Oct-17-19 Carlsen vs Bacrot, 2010
 
TheaN: I wasted an exceptional amount of time on 28.Nxf6, which would be the common magnet type move on a Thursday, but this simply doesn't work (all Black pieces are well placed in that scenario to defend against the attack). Thus, bring in more pieces first: typically she's the front ...
 
   Oct-17-19 Shirov vs A Kashlinskaya, 2019 (replies)
 
TheaN: Lights out for Alina I guess; happens to the best though you always hope it doesn't happen to yourself. I think we can contribute this huge oversight to the queen side rook being on <b7> instead of <b8>. It's common in those types of positions to trade a rook off as it ...
 
   Oct-16-19 J Cori vs N Huschenbeth, 2012 (replies)
 
TheaN: I originally saw the combination as presented by <harpendenwoodpusher>, but noticed in time that e2 is defended at that point. Then it's always 'switcheroo', so the knight goes first and the c-file pin becomes apparent. Black is not winning per se after 22.Qf1 but has a good ...
 
   Oct-15-19 Alekhine vs Tylor, 1937 (replies)
 
TheaN: <cunctatorg> fair points but I would like to correct the difficulty purely on depth: some seven-moves are considerably easy, whilst some are not understandable for humans. As ply increases, the occurrence of the latter is more common. This combination is a bit of a mix. The ...
 
   Oct-14-19 Lombardy vs N Spiridonov, 1964 (replies)
 
TheaN: For once I <instantaneously> solved a Monday: what's an instant, in this case? The homepage of CG.com loaded, the moment the position became visible I saw the <key> solution Rh5+ (not the whole mate in two in an instant which is impossible). Pattern recognition, I guess: ...
 
   Oct-11-19 M Bluebaum vs A Korobov, 2016 (replies)
 
TheaN: I'm a bit torn about the puzzle as I don't really believe in a large advantage for White in the game line, and ended playing a sub par variation because of it. <16.exf6 Bxh1> is obvious. However, in the game line I was not so convinced after the bishop ends up on e4, as putting ...
 
   Oct-10-19 S Volkov vs Yifan Hou, 2008 (replies)
 
TheaN: This defender munching is a clear candidates, and by proxy, the only real one. White can probably turn it around with 53.Rd8+ first, but <53.Rxf5!> forces Black's hand. A) 53....Rxg3, counterattacking is flawed here, 54.Rd8+ Kg7 55.Rxc8 and with just the rooks on the board Black
 
   Oct-09-19 F Vallejo Pons vs N Huschenbeth, 2010 (replies)
 
TheaN: <Halldor: I went for 22... Bd4 winning the bishop on e3, but if White takes then 23...e5, trapping the queen.> The problem's Pb5. Ie 22....Bd4? 23.Bxd4 e6 24.Qxb5 +-.
 
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