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TheaN
Member since Mar-29-07 · Last seen Sep-19-25
36yo Dutch male chess player with a KNSB rating of <1916> (per September 2024).

Nickname disclaimer: I've occasionally seen people abbreviate my nickname to Thea, but it's not from 'Thea N', it's from 'The aN', 'An' being a cheeky abbreviation to my first name. I go by a different nick nowadays, just use TheaN in full or call me Arno.

Where you find me here: I am almost always occupied on the daily puzzle, at least during the weekdays. Weekends tend to be above my level, though I occasionally get full weeks done.

Other interests are biology (sciences, teaching), gaming (WoW, DOOM, GTA, among others) and the occasional binge watch (few animes and RL shows like Stranger Things, assorti of stuff really).

[Update: sep-2024]


   TheaN has kibitzed 4114 times to chessgames   [more...]
   Sep-15-25 Landa vs A Ivanov, 1985 (replies)
 
TheaN: Holy *%# I completely missed the h-file is open. I've been looking at the position for 5-10 minutes. Probably one of the worst blindness I've had in recent months. I played <22....d5?!> with the idea <23.Bxd5 (Nxd5 Bxe2+ -+) Rxd5 -+>, for as far as I can see this wins even
 
   Sep-09-25 Vasiukov vs Alburt, 1972 (replies)
 
TheaN: Wow, both Monday and Tuesday on point this week. <17.Qxe8+!> clears f7 and picking up Re8 <17....Rxe8> for what it's worth, after either interposing 18.Nf7+ +- anyway <18.Nf7+ Kg8 19.Nxd6 +-> and because Nd5 is hanging White wins a full rook, not the exchange, and ...
 
   Sep-09-25 Abdusattorov vs Y K Erdogmus, 2025 (replies)
 
TheaN: On move 113 everyone was rightfully claiming "Nd4 is a draw". Some were saying it's an <easy> draw. It really isn't, Black is walking a 75-move long tight rope and misplacing queen or king once leads to a very simple loss, as White can trade and wins. Incredibly impressive.
 
   Sep-08-25 Seirawan vs Van der Wiel, 1978 (replies)
 
TheaN: "I'll do it myself" moment here, given after <28....Qxh2+ 29.Kxh2 Kg7/Kg8+> it's essentially the Black monarch pulling the trigger (which is the h8-rook). Sadly it's not mate straight away, rook has to fire again himself, <30.Bh3 Rxh3#>.
 
   Sep-02-25 M Sion Castro vs J Cardenas Valero, 1998 (replies)
 
TheaN: I actually managed to go the long route with this one... but lets add one more move to the winning moves for Black: <28....Qe2+!? 29.Qf3 (Kxg5 Qh5#) Rh4+!>: [DIAGRAM] Black just starts a long sequence of remove-the-guards of the White queen and in all variations the rook falls
 
   Sep-01-25 Kaidanov vs Anand, 1987 (replies)
 
TheaN: Very rare pattern here <25.Qxf7+ Rxf7 26.Ng6+ Kg8 27.Rh8#> where all White pieces work beautifully to ensnare the Black king. It's striking that even someone like Anand can judge such a position wrongly. On move 23 he's up after 23....Kf8 ∓. 23....Bd5?! is a slight ...
 
   Aug-26-25 E Tairova vs M Sandu, 2008 (replies)
 
TheaN: Pretty complicated because it <seems> Black can counterattack easily... not really though. <36.Rxh7!>. First question, can Black decline? Answer: not really. There's no counterattack potential, at least not enough to keep the rook on h7. Ie 36....Bxd6 and now 37.Rfh1! #7 ...
 
   Aug-25-25 E Cosma vs J Hajkova-Maskova, 1992 (replies)
 
TheaN: <39....Rh1+ 40.Bxh1 Qh2+ 41.Kf1 Qf2#>. Bit of an odd pattern here; normally Rh1+ is a king magnet, in this case it's a bishop magnet to clear the second rank. It <does> happen fairly often, but definitely rarer than the former.
 
   Aug-21-25 T Engqvist vs Bronstein, 1990 (replies)
 
TheaN: Oh oops, I missed the queen utilizing the pin at all. I saw <22.Nxc6 Qxc6> alternatives are grim for Black with Nxe7+ and Qd8+ also in the air whilst winning a crucial pawn <23.Bd5> and here I thought Black had no real way to keep Ra8 on the board, ie 23....Rd8? 24.Bxc6 ...
 
   Aug-20-25 R Rodriguez Rodriguez vs J Diez del Corral, 1953 (replies)
 
TheaN: Requires a bit of end evaluation, but then it show <30....Rxh3!> is the way to numb White indefinitely. Black threatens Ng3+ and Rxe3 if need be, so White can really only accept <31.gxh3> opening up the long diagonal (at least half of it) <31....Qe4+>: [DIAGRAM] ...
 
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