Annotated Chess Game 10539084 by 64squaresofpain

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1. e4 c5 2. Nb1c3 e6 3. Ng1f3 Nb8c6 4. Bf1c4 a6 5. d3 b5 6. Bc4b3 Bf8d6 7. a3 Ng8e7 8. O-O O-O
All standard development so far in the sicilian
9. Bc1e3 Bc8b7 10. Nc3e2 Ra8c8 11. c4 Bd6c7
? The first mistake... this move was made to help free the d pawn, but it consequently drops the pawn on c5
12. cxb5 axb5 13. Be3xc5 Nc6e5 14. Nf3xe5 Bc7xe5 15. Bc5d4 Be5xd4 16. Ne2xd4 Qd8b6
Hits the knight and protects b5
17. Nd4f3 Kg8h8
Moving out of the sights of the light sq. bishop, helpful in allowing the central pawns to march
18. Qd1d2 f5
as the pawn on e4 is blocking the bishop's diagonal, and preventing the knight from leaping forward, black strikes at it
19. Rf1e1 fxe4 20. dxe4 d5
... and once again
21. exd5 Bb7xd5 22. Bb3xd5 Ne7xd5
black has 2 weak isolated pawns, but 2 fairly strong rooks both on open files
23. Nf3e5 Rc8d8
stopping Nd7, and also potentially attacking the queen
24. Qd2g5
? decisive mistake, as f2 now falls, opening up the f-file for black to utilise with great effect
24... Qb6xf2 25. Kg1h1 Qf2f6
Offers a queen trade, probably not the best option in hindsight