How do you play against people who refuse to castle

endgame

Delaying or never castling is a common theme in the Sicilian. Especially the Kan.

Don't let it rattle you. Objectively identify your opponents weakest sector, and attack it mercilessly.

(Just because he didn't put his king there, doesn't mean you can't put your queen there.)

I disagree with rbk. I just don't think Qe2 is an improvement. Back can continue g4, as he intended anyway, or play a neutral move like h5, and pray white greedily grabs that g5 pawn, opening lines toward whites king.

I think 16.Ne2 was good, to bring a defender over to your king. I would normally prefer something more agressive, like rbk said. But I don't think white has anything there.

You could have castled queenside and attacked on the king side.

Black's play was reasonable.

"Opening the center" is not the right way to think of it... the center is already open (at least as open as it's going to be). His idea is clearly what he did in the game (there are a few openings that use this theme as others have said).

What I really don't like is your move 12. Now both your knights have zero advanced squares and the bishop you decided to save is crap.

But ok, so here we are after 14...Ke7. I guess your long term plan is using the d file and eventually your queenside majority, which seems like a pretty small plus. Meanwhile black's flank attack might get dangerous fast (or as in the game, really fast). So find a few defensive moves around move 15-17, then spend 50 moves trying to milk your super small plus that is your queenside and d file control.

As I went through your game- at move 11 I was expecting you to do long castle 0-0-0.

Reasons-1)  Knights are very good protector of king. At move 11- both of your knights are on the Queen side

2) With long castle you could had immediatly brought inactive rook on a1 to d1. Note that at move 11- d file is semi open with black's king still at the center. This would had put some pressure on the opponent.

Why did you resign- you still had some chances. Your knight on e3 could had taken out black's attcking knight on g4.

You could have castled queenside and attacked on the king side. I think in the final position Black is losing a knight because the attacking Black N is attacked twice and defended only once.

You just answered your own question. :)

Let me throw in my two cents:

6.Bd2  Why?  In the open Sicilian the d-file is where you want your rooks, and this starts a self-blockade of your only open file.  e3 is where you wants the DSB, in order to play a later f4.  It also leaves the N at d4 unprotected.

7.Bd3  Maybe Nb3 was better here--if Bb4, then 8.Bd3

9.Qf3  I like the idea of Qe2, 0-0-0, Be3 here, getting the k-side pawns moving.  The Qf3 blocks the f-pawn.

10.Bf4  Be3

11.0-0  This makes the B@a7 much stronger.  To open the position, you need to push pawns, and in this position you need to push f4, and with the Q@f3 and the pin this will take some time.  0-0-0 makes d6 touchy and allows the k-side to advance.

12.Bxe5  Since the LSB doesn't have any good squares, I'd rather play Qe2 here and keep the DSB to pressure d6.

14....Ke7  Black wants to play g5, to shut down f4 forever, but can't leave the N hanging on f6.

Hope this helps.

attack through the centre

I'd typically delay castling to see if I can plausibly castle queenside without the opponent being able to do the same soundly.  When one castles queenside it's with the expectation they'd castle kingside.  The problem with both sides castling queenside typically is it results in one fewer imbalance.  Opposite side castling is an imbalance to be considered.  The fewer imbalances the fewer winning chances so to improve winning chances it may be best to wait. 

However it's typically best just to castle kingside, when it's expected the opponent will anyway.   Sometimes in a Sicilian I'll castle kingside as white just to avoid the beaten paths, I'm especially partial to the fianchetto systems as they further reinforce the d5 square.  Black can try exchanging off the bishop, but it takes too much time so white has time for other things:

aim for f7 with as much as you can muster

Checkmate them in the middle of the board if they refuse to castle.

Attack the corner files (A or H) or go for the two middle files at once (e & d)

14...Ke7 is so arrogant. I would have castled on the queenside and gone for a kingside pawn advance. You don't want to exhange pieces either as any exhanges only favours your opponent.

the center is closed. it is a good move by your opponent. there's nothing to be shocked. it is equal.

your opponent was anyway better. you don't need to i

Castling is a powerful move: it is like 3 moves in 1: Kf7, Rf8, Kg8, so it gains 2 tempi. It brings the king to safety and it connects the rooks.
In this game 6 Bd2 is a passive move. 6 Be3, 6 Be2, 6 Bd3, 6 f4, 6 g3 are all better moves.
7 Bd3 is fine, but 7 g4 is more active.
9 Qf3 brings the queen into play prematurely and is not harmonious as she blocks pawn f2. Nc6-e5 is to come and then the queen must flee. Better 9 f4 controlling central square e5.
10 Bf4 moves the bishop for the 2nd time. This shows why 6 Bd2 was bad.
12 Bxe5? gives up the bishop's pair, moves the bishop a 3rd time and gives the dangerous Ba7 free reign. This will show in the final position. You had to retreat 12 Qe2, admitting that 9 Qf3 was premature.

A game from ages ago, but really quite high class play from black. Wonder what his FIDE rating was?