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TheaN
Member since Mar-29-07 · Last seen Jan-16-18
<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 2149 times to chessgames   [more...]
   Jan-09-18 D Shapiro vs Silman, 1987 (replies)
 
TheaN: Hm in my above variation <39....Kd6> <40.Nc4+!> is obviously faster, as <40....Kc6 (Kd5 41.Qb7#, not easy to see) 41.Bg2+ +-> white clears the whole board.
 
   Dec-27-17 Mo Zhai vs Qi Guo, 2016 (replies)
 
TheaN: Wednesday 27 December 2017 <19.?> <19.Qh7+ Kxf8 20.Qh8+ Ke7 21.Qd8#>? Feels off for a wednesday, even though the mate itself isn't that easy to see. I guess the difficulty is to narrow down that the escape is not an actual escape: otherwise white had to look for a way to
 
   Dec-22-17 Sakaev vs Kramnik, 1989 (replies)
 
TheaN: Perhaps an interesting variation to consider after my line is 17....Qxh1 after which 18.Nf6+! wins the fastest: <17....Qxh1 18.Nf6+ Kf8 (Rxf6 19.Qxg7#) 19.hxg7+ Kd7 (Rxg7 20.Qe8#) 20.g8=Q> and Black's done: mate in seven, to be exact. Have to admit I did not calculate that ^^.
 
   Nov-16-17 S Sagar vs D Mirzoyan, 2016 (replies)
 
TheaN: To be precise, I fault in my A1 subvariation after <16....gxh6 17.Rb3 Qf6 18.Rg3+ Kh8 19.Rg6? fxg6 20.Qxh6+ Kg8 21.Bxg6 Qg7 -+> missing such obviously move as the last one.
 
   Nov-14-17 L Schandorff vs T Willemze, 2016 (replies)
 
TheaN: <27.?> A lot more clear than last week (typically the two puzzles I've done now in a week are two Tuesdays). Material is even, and white overloads Bd8 with <27.Rxb6> basically ending the game on the spot. Black has no reasonable lines to consider. He either goes down a ...
 
   Nov-07-17 R Jumabayev vs F Vallejo Pons, 2016 (replies)
 
TheaN: Good afternoon CG! I have no idea how long it has been since I've solved one of these, but as my chess strength is a bit in disamay I thought I may as well pick up the CG puzzles again. Immediately I notice I'm sloppy on the tactics side, as I completely missed a sideline. Material:
 
   Dec-23-15 R Mamedov vs A R Saleh Salem, 2014 (replies)
 
TheaN: Interesting Wednesday, in the sense that after the first move, black has a very clear threat but also a hidden one. After 42....Rxd5, obviously pinning white to the defense (literally, for Pe4) as the rook cannot be taken and black threatens the obvious 43....Rd2+. However, it's the ...
 
   Dec-18-15 Kibitzer's Café (replies)
 
TheaN: It seems obvious 37 has something to do with genome building blocks, could also be a red herring though.
 
   Dec-17-15 M Karthikeyan vs Eljanov, 2014 (replies)
 
TheaN: <kevinatcausa: Jimfromprovidence: My instinct is no. White plays Kxg3 and plans to push the h pawn next turn.> Basic concept for white, yes, but straight away it doesn't work. 52....hxg3+ 53.Kxg3 Bxc3 54.h4? Be1+ . Not to ...
 
   Dec-14-15 T Krabbe vs Nieuwhuis, 1959 (replies)
 
TheaN: Want to get back to this variation 8 years after posting (my english back then, 'drawed' ugh). Thanks to Tim for actually replying to this well known game and Scotch gambit 'trap'): Apparantly best is 8.Bxg7!? on account of 8....Nb4? 9.Qe5! and now if black continues with 9....Nc2+ ...
 
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