26 Jun 2015

E51 Nimzo-Indian: Rubinstein: 4...O-O 5.Nf3 d5 (1.d4 d5 2.c4 Nc6 3.Nf3 e6 4.Nc3 Nf6 5.e3 dxc4 6.Bxc4 Bd6 7.O-O O-O 8.e4 e5)

E51 Nimzo-Indian: Rubinstein: 4...O-O 5.Nf3 d5 (1.d4 d5 2.c4 Nc6 3.Nf3 e6 4.Nc3 Nf6 5.e3 dxc4 6.Bxc4 Bd6 7.O-O O-O 8.e4 e5)

The game below was played in the first round of a tournament called 1800+ 7 Days. There are 64 players in this tournament, divided into eight player groups and three best players of each group will advance to the next round. I am currently on sixth place and me ending up in the top three is very unlikely at this time. I have finished six games so far, with a score of 3,5 out of 6 and I have eight games left. PaulPorsche (2362) is leading group #5 at the moment, the group I am in. He has gathered 9,5 points in ten games, so he is a clear favorite to win the group at the moment. The next two players in the standings are BigGStikman (2045) and skw123 (2129) and both have gathered 5,5 points in seven games. The ratings shown in the parentheses are their Online Chess ratings at the time I type this. Even though they have not secured their places on the next round, I think those three players are the most likely ones to continue to the second round from group #5. I have added one mate in one, one mate in two, one mate in three, one mate in four and one mate in five today.

This paragraph and the ones that follow it have been added November 8th, 2016, unless otherwise stated. In my opinion the first move that started the downhill for CabassoG was 5...dxc4. The move is a mistake because I could take back on c4 with my bishop that still originated at f1. If the player who controls the black pieces wants to take on c4, then that player should take there only after the light-squared has moved. Due to the move played in the game, I got one extra move to develop my pieces. Even after that move the game might be salvageable for my opponent with accurate play. The position went more down the drain for CabassoG with my opponent's 6th move, Bd6 that he played in the diagram below.

I did miss the strongest reply, 7.e4, this time and played 7.O-O instead allowing my opponent to breathe a sigh of relief. I may have missed my chance to get a clear advantage on move on move 7, but at least I remained on the better side of the board. It was with my 9th move that the advantage tipped in favor of my opponent. In the position below I played 9.Be3.

CabassoG was able to play the most accurate reply, 9...exd4. I replied with 10.Nxd4 and opponent answered by playing 10...Nxd4. Unfortunately for CabassoG, my opponent's 10th move was a mistake that enabled me to get back into the game. When we reached the position below after my 14th move Qc2, CabassoG made the biggest mistake of the game up to that point. CabassoG played 14...Bb7, which could have been already the losing move.

I played a good enough move in response, but I missed the strongest move 15.e5. In the game I played 15.Rad1. Again my opponent took a wrong path though and after 15...Qc8 I should have been in a winning position. Once more I missed my chance, this time, however, I was not able to maintain an advantage, the move 16.Nd5 brought the position to equality. The game was rather evenly fought until CabassoG played 32...Qc5 in the position below.

While for a couple of moves I was able maintain the advantage, with my 35th move Rd8 all my gathered advantage disappeared. In order to maintain the best possible chance to win the game, I should have played 35.Re7 instead. CabassoG continued with the right idea at first, but then my opponent played 37...g5 in the position below.

It was the fatal mistake as it allowed a forced mate.

[Event "1800+ 7 Days - Round 1"] [Site "Chess.com"] [Date "2014.10.10"] [Round "?"] [White "Vierjoki, Timo"] [Black "CabassoG"] [Result "1-0"] [ECO "E51"] [WhiteElo "1908"] [BlackElo "1690"] [Annotator "Stockfish 8 64 POPCNT (30s), TV"] [PlyCount "75"] [EventDate "2014.??.??"] 1. d4 d5 2. c4 Nc6 {Queen's Gambit Refused: Chigorin Defense} 3. Nf3 (3. cxd5 Qxd5 4. e3 e5 5. Nc3 Bb4 6. Bd2 Bxc3 7. Bxc3 exd4 8. Ne2 {Queen's Gambit Refused: Chigorin Defense. Exchange Variation Costa's Line}) 3... e6 (3... Bg4 4. Qa4 {Queen's Gambit Refused: Chigorin Defense. Main Line Alekhine Variation} ) (3... e5 {Queen's Gambit Refused: Chigorin Defense. Lazard Gambit}) 4. Nc3 Nf6 5. e3 dxc4 6. Bxc4 Bd6 7. O-O O-O 8. e4 e5 {E51 Nimzo-Indian: Rubinstein: 4...O-O 5.Nf3 d5} 9. Be3 (9. d5 Ne7 10. Re1 (10. h3 a6 11. Be3 Ng6 12. Be2 Re8 13. Nd2 Nf4 14. Nc4 b5 15. Nxd6 cxd6 16. Bf3 h6 17. b4 Bd7 18. Ne2 g5 19. Re1 Rc8 20. Nxf4 gxf4 21. Bd2 Kh7 22. Rc1 Rxc1 23. Qxc1 Rg8 24. Kf1 Qb6 {Webb,S (2445)-Lawton,G Ayr 1978 1/2-1/2 (49)}) 10... Ng6 11. Bf1 Qe7 12. h3 Bd7 13. Nd2 Bc5 14. Nb3 Bb6 15. a4 a6 16. a5 Ba7 17. Be3 Bxe3 18. Rxe3 Ne8 19. Nd2 Nd6 20. Nc4 Nf4 21. Kh2 Rad8 22. b3 f5 23. exf5 Rxf5 {Najdorf,M (2510)-Brond,V (2310) Buenos Aires 1975 1-0 (40)}) 9... exd4 $146 (9... Bg4 10. d5 Ne7 11. Be2 Ng6 12. h3 Bd7 13. Rc1 h6 14. Qb3 Rb8 15. Bxa7 Ra8 16. Be3 Nh7 17. Bd3 f5 18. exf5 Bxf5 19. Bxf5 Rxf5 20. Ne4 Nh4 21. Nh2 Nf6 22. Ng3 Rf4 23. Bxf4 exf4 24. Ne2 {De Saint Amant,P-Stanley,C New York 1852 1-0 (36)}) 10. Nxd4 Nxd4 (10... Ng4 $142 $5 11. Nf3 Nxe3 12. fxe3 Qe7 $17) 11. Bxd4 $11 Be7 (11... c5 12. Bxf6 Qxf6 13. f4 Qd4+ 14. Qxd4 cxd4 15. Nb5 $11) 12. Re1 {White has an active position} (12. e5 Nd7 13. Qh5 c5 $14) 12... c5 {Black threatens to win material: c5xd4} (12... Be6 13. Bxe6 fxe6 14. Qa4 $14) 13. Be3 (13. Be5 Be6 14. Qb3 Bxc4 15. Qxc4 Qb6 $14) 13... b6 (13... Be6 14. Qb3 Qb6 15. f3 $14) 14. Qc2 {White has a very active position} (14. e5 $142 Ng4 15. Bf4 Qxd1 16. Raxd1 $16) 14... Bb7 $4 (14... Be6 15. Bxe6 fxe6 16. Qe2 $14) 15. Rad1 $4 {White threatens to win material: Rd1xd8. allows the opponent back into the game} (15. e5 $142 {keeps an even firmer grip} Ne8 16. Rad1 $18) 15... Qc8 (15... Qc7 $16) 16. Nd5 (16. Qe2 $142 Kh8 17. Bf4 $18) 16... Nxd5 $11 17. Bxd5 Re8 18. Qb3 Bxd5 {Black forks: b3+e4} 19. Rxd5 c4 {Black threatens to win material: c4xb3} 20. Qc2 Bf6 21. Bd4 Bxd4 22. Rxd4 b5 23. Red1 Qc5 24. Rd5 {White threatens to win material: Rd5xc5. An ideal square for the white rook.} Qc6 25. f3 a5 26. R1d4 Qh6 (26... Rac8 27. Rd6 Qc5 28. Kf1 $11) 27. Qd2 (27. a4 bxa4 28. Rxc4 Qb6+ 29. Kh1 Rad8 30. Rxd8 Rxd8 $11) 27... Qb6 $11 28. Kf1 g6 (28... Rac8 29. Rd6 Qc7 30. Qg5 $11) 29. Rd7 (29. h3 Re6 $14) 29... Rac8 30. Qf4 {White has a mate threat} (30. R4d6 Qc5 $14) 30... Rf8 $11 31. R4d6 {White threatens to win material: Rd6xb6} Rc6 32. e5 Qc5 (32... Rxd6 $142 $5 {and Black has air to breath} 33. exd6 c3 34. bxc3 b4 $11) 33. Qf6 $16 Rxd6 34. exd6 Qd5 (34... Qf5 $142 35. Qxf5 gxf5 $16) 35. Rd8 $4 {with this move White loses his initiative} (35. Rc7 Qd2 36. d7 $18) 35... Qd1+ $11 36. Kf2 Qd2+ 37. Kg3 {White has a mate threat} g5 $4 {throws away a nice position} (37... Rxd8 $142 {was much better} 38. Qxd8+ Kg7 $11) 38. Rxf8+ (38. Rxf8+ Kxf8 39. Qh8#) 1-0

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