space advantage

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Kvapil_000
[Event "avinstagram vs. Highlander1210"] [Site "Chess.com"] [Date "2024-03-09"] [White "avinstagram"] [Black "Highlander1210"] [Result "0-1"] [WhiteElo "1532"] [BlackElo "1554"] [TimeControl "1800"] [Termination "Highlander1210 won by checkmate"] 1. Nf3 h6 2. d4 c5 3. dxc5 Qa5+ 4. Nc3 Qxc5 5. e4 e6 6. a3 d6 7. Be3 Qc7 8. Qd2 Nd7 9. O-O-O Be7 10. h3 a6 11. g4 b5 12. Bg2 Bb7 13. Bf4 e5 14. Be3 Rd8 15. g5 h5 16. h4 g6 17. Nd5 Bxd5 18. exd5 Bf8 19. Rhe1 Bg7 20. Bf4 Ne7 21. Bg3 O-O 22. Nh2 Nf5 23. Rh1 a5 24. Qd3 b4 25. axb4 axb4 26. f4 Nc5 27. Qf3 e4 28. Qf2 Nd3+ 29. Rxd3 exd3 30. Be4 Nxg3 31. Qxg3 Qxc2# 0-1 my thought process: move 1 I always play Nf3 as it is part of my repertoire move 2 I went to control the center and develop my bishop and I need to develop my bishop since I was already planning to castle long (now I know e4 was better since it gives me +0.8 compared to +0.3 for d4) move 3 I thought it was a free pawn, I was wrong (I should have advanced the pawn according to the engine) move 4 developing knights before bishops and helping me castle long move 5 controlling the center move 6 this is to stop the opponents queen from attacking my b2 pawn move 7 developing with a threat move 8 helping me castle move 9 finally I castled move 10 attacking the king with a pawn storm move 11 continuing the attack move 12 development of my bishop move 13 I realized a pawn storm on the kingside would only gain space and not help attack the king, since it wasn't castled yet. Since the king is in the center, I tried opening up the center. move 14 I don't know why I moved this move 15 I saw a tactic getting rid of his bishop which would have my queen win a pawn move 16 solidifying my gain in kingside space move 17 a nice outpost for my knight, I didn't think he would take since we consider bishops better than knights in the endgame move 18 gaining space now my opponent has retreated and is cramped my question is: how do I use my space advantage+ when I also have center? Any other comments on how I could have improved my game or mistakes I made is welcomed. my tactics rating peak is 3099 so tactics isn't really a problem in my opinion/ the opening was rare with h6 and I have never seen it before, at least now it is in my repertoire
tygxc
tygxc

@1

"how I could have improved my game or mistakes"
22 Nh2? makes no sense. What is the knight doing there. Centralise it 22 Nd4.
20 Bf4? the right idea to exploit Re1 - Ke8, but the wrong move 20 Nxe5
11 g4? Much stronger 11 Bf4 striking at the backward pawn d6
10 h3? Loss of time. Better 10 Nb5 striking at the backward pawn d6.
9 O-O-O? Better 9 Nb5 striking at the backward pawn d6.

"how do I use my space advantage" ++ Space is overrated. You cannot win on space alone.

"the opening was rare with h6" ++ The late IM Basman used to play that.

Kvapil_000

Thanks! This answer is what I was looking for.