♔♕ Thinking Squares

♔♕
(IM) Renier Castellanos and (WIM) Raluca Sgircea. Available for chess lessons and always looking for tournaments to play. We love chess photography too.

[Raluca Sgircea @ralucasgircea]

He's fine...
@RenierCast @killer_chess

[Killer Chess Training @killer_chess]

The plan for this week!

[♔♕ Thinking Squares @ThinkingSquares]

White scored a nice win in the first round of Djerba Open.
How did he continue in this position?

#chess #chesstactics

[♔♕ Thinking Squares @ThinkingSquares]

Seen in round 5 of Abierto de Montevideo. How did Black finish the game off here? 💣

#chess

[♔♕ Thinking Squares @ThinkingSquares]

A fresh #tactic from round 7 of the Amateurs section of #TATASteelChess .
How did Black proceed to win material here?

[Killer Chess Training @killer_chess]

Leko vs Adams — Dortmund Candidates 2002

[Killer Chess Training @killer_chess]

The Camp will be held in the Zoraida Garden Hotel. Right accross the beach. All inclusive 4⭐️

- At least 5 hours of daily training.

- On the 23rd (Saturday) there will be a rapid/blitz tournament. FIDE rated.

[Killer Chess Training @killer_chess]

Our In-Person Chess Camp is coming soon!
Location: Roquetas de Mar, Spain 🇪🇸
Dates: May 17–24, 2026
Our coaches: GM Aagaard @GMJacobAagaard, GM Julen Arizmendi & GM Castellanos @RenierCast, plus special guest GM Alexandra Kosteniuk 🌟
👉 https://t.co/2ZWznFvnYW

[♔♕ Thinking Squares @ThinkingSquares]

@chessclubICC On top of everything, white is currently on 6/6!

[♔♕ Thinking Squares @ThinkingSquares]

@killer_chess Spectacular solution!

[Killer Chess Training @killer_chess]

Puzzle of the Day ♟️
White to play and win.
Can you find the best move?

Join: https://t.co/VKMbIGNW7m

[GM Renier Castellanos @RenierCast]

Best player of 2025?
This is my list. You vote.
Anyone missing, write the name.

[GM Renier Castellanos @RenierCast]

The GOLDEN principle to convert your advantage vs stronger opponents:

Reject the draw offer. Play on. Win.

Follow me for more wisdom.

[GM Renier Castellanos @RenierCast]

White to play

[GM Renier Castellanos @RenierCast]

Time to resign? Let me know in the replies.
Black to play

[GM Renier Castellanos @RenierCast]

And after 41.Ra4 b5 although Black is still winning, White has 42.Ra7+ with counterplay and things become more difficult. He allowed ''contact''.

[GM Renier Castellanos @RenierCast]

Black to play

[GM Renier Castellanos @RenierCast]

White to play and gain a positional advantage.

[GM Renier Castellanos @RenierCast]

Beautiful preparation by Levon.
Classical chess isn't dead after all.

[GM Renier Castellanos @RenierCast]

Advanced but why not.
White to play and gain a big advantage.
Three moves answer.