16 votes
Accepted

Why did white sacrifice knight in this Nimzowitsch's 1905 game?

White has a mating threat (Qxh7 Kxh7 Rh6#) that he couldn't execute because he was under check. On the next move Black will remove the mating threat with 1...Qxg6 or with a knight move, most probably ...
  • 13.9k
5 votes
Accepted

Why was this castling move so "brilliant"?

I don't know what chess.com's algorithm for deciding on "brilliant" moves is exactly, but your "simple king-side castle" is in fact close to "some insane sacrifice" that ...
4 votes
Accepted

What is the reasoning behind the suggested move?

The idea of 1...Ne1 is to distract the Rook from the defense of h2, so the Black Queen would go to h2. For example: If 2.Rxe1 Rxf2 check (attraction) 3.Kxf2 Qh2 check 4.Kf1 Rf8 check 5.Qf7 Rxf7 ...
  • 949
3 votes

If there was perfect play from both sides, will it be draw or win for one?

We have not mathematically solved perfect play in chess yet. However, chess computers represent our best understanding of nearly perfect play, and about equal strength engines overwhelmingly make ...
  • 3,246
1 vote

How to run lichess stockfish analysis locally?

Download Stockfish form official website. Note that there are different versions for different cpus - pick first one that works. Then you can communicate with stockfish using UCI protocol. For python ...
1 vote

Why is this a “Brilliant Move”?

Whites bishop on g5 is hanging, after Bxg5 Nxg5 Qxg5 black is up a piece. However this would remove the defense of the c7 pawn allowing for Nxc7 by white forking the king and the rook on a1 leading to ...
  • 51
1 vote

What is the reasoning behind the suggested move?

The other answer covers everything but I'll add that what engine analysis says about a totally winning position doesn't matter much. Here Stockfish can see the mate in 5, so it goes for that. If you ...
  • 15k
1 vote
Accepted

What are the cases in which is good to take Qb3 in "London System'sSH" setups and why

The answer is very simple and can be summed up in one word - "development". In the first position it is essentially a "Mexican standoff". If either side plays QxQ they hand the ...
  • 86.8k
1 vote

Analysis of Viswanathan Anand vs Vladimir Kramnik in the 2013 Zurich Chess Challenge?

I don't know why it doesn't have a well-defined answer yet. There's already another answer but there's some information missing (from my perspective). And the link given in the question's comment is ...

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