Thx to Mr Bh6 who commented a game for the blog,he is white in the games:
Swayams,Mishra (2187) - Biswajeet,Nayak (2024) [E40]
National U-15 Boys Chess Championship Chennai,Tamil Nadu (5), 05.10.2007
1.d4 Nf6 2.c4 e6!? [2...g6 3.Nc3 d5 1/2-1/2 Swayams,M-Biswajeet,N/BBSR, Orissa 2007 (56) Was the normal line which my opponent plays.After the game he told me he had prepared the Benko Gambit also.] 3.Nc3 Bb4 4.e3 d5?! This old move is rarely seen these days. But it does have the advantage of avoiding some modern lines Black should play d5 only when white has commited with Nge2 [4...0-0 5.Nge2 d5 (5...Re8!? Swayams-Satyapragyan,National B 2007) 6.a3 Be7 (6...Bd6 Swayams-Sharad Tilak,Sangli 2007) 7.cxd5 exd5 (7...Nxd5 8.Nxd5 exd5 Swayams-Sethuraman,Uzbekistan 2007) 8.Nf4 Swayams-Tania Sachdev, Commonwealth 2006; Swayams-Prachi Thite,Sangli 2007] 5.Nge2?! This move is often played after e.g. 4.-, c5, but here it is not dangerous for Black [5.a3! The only way to take advantage of 4.-, d5 is 5. a3!, after which Black must choose between loosing a tempo by 5.-, Be7 or allowing the dangerous Botvinnik variation by 5.-, Bc3. 6. bc3. In the Botvinnik variation Black ususally refrains from an early d7-d5, as this gives White the opportunity to open the centre for two Bs.' 5...Bxc3+ (5...Be7 6.Nf3 Now white has 1 tempo extra (a3) so he does not need to play Nge2) 6.bxc3 c5 White has slight advantage as black surendered his bishop easily;Kasparov-Polgar,Tiburg 1997] 5...dxc4?! Releasing the tension is bad [5...0-0 Transposes to 4...0-0 5. Nge2 d5-See the note on Black's fourth move or;
5...c5 was better as keep the tension 6.a3 Bxc3+ 7.Nxc3 cxd4 8.exd4 dxc4 9.Bxc4 Nc6 10.Be3 0-0 11.0-0 b6 12.Rc1 Bb7 13.Ba2 (13.h3?! Swayams-Lalith Babu M R,Asian Junior 2006) 13...Ne7 Swayams-Rengarajan Linda,National B 2007] 6.a3 Be7 [6...Bxc3+!? 7.Nxc3 c5 8.Bxc4 (8.dxc5 Qxd1+ 9.Kxd1 Na6 Peralta-Illijin, Santa Cruz 2005) 8...cxd4 9.exd4 Transposes to 5...c5 6.a3 Bc3 7.Nc3 cd 9. Bc4-given in the note to Black's 5th move;
6...Ba5 !?-Hansen,LB 7.Qa4+ Van der Bersselaar-Pavalovic,Gibralter 2006 7...c6 8.Qxc4 0-0 9.Ng3 Nbd7 10.f4 Nb6 11.Qd3 c5„ Euwe,M-Capablanca,J/Match/1938/] 7.Ng3!? A new move.I had a feeling that with the N on f4,Black can try to drive it or attack it. [7.Nf4 0-0 (7...Nc6 8.Bxc4 e5 9.Nfe2 exd4 10.exd4 0-0 11.0-0 Bf5 12.f3 Re8 13.g4 Bg6 14.h4 h5 15.Nf4 Kh7 16.g5 Nd7 17.d5 Nd4 18.Bd3 Bc5 19.Kg2 Ne5 20.Nxg6 fxg6 21.Be4 Nf5 22.Bxf5 gxf5 23.Qc2 g6 24.Bf4 1/2-1/2 Hebert, J-Kovacevic,V/Toronto 1990/CBM 020) 8.Bxc4 Bd6 9.Nh5 Nbd7 10.e4 Nxh5 11.Qxh5 c5 12.dxc5 Bxc5 13.0-0 Qf6 14.Bg5 Qg6 15.Qxg6 hxg6 16.Rfd1 a6 17.Rac1 Re8 18.Nb5 Be7 19.Bxe7 Rxe7 20.Nd6 Nb6 21.Bb3 Kf8 22.e5 Bd7 23.Nxb7± 1-0 Milos,G-Nijboer,F/Copenhagen 1982/EXT 2000 (42);
7.Qa4+ Nbd7 8.Qxc4 0-0 9.g3 e5! 10.Bg2 exd4 11.exd4 (11.Nxd4 Ne5„; 11.Qxd4 Nc5„) 11...Nb6 12.Qd3 c6 13.Nf4 Bd6 14.0-0 Bxf4! In playing against an isolated pawn a N is often better than a B. The N on f4 controls the vital square on d5. Black is not afraid of the two Bs. 15.Bxf4 Be6 16.Rfe1 Nfd5 17.Bd2 Nxc3 18.Bxc3 (18.bxc3 Bd5³) 18...Qd7 19.Re5 f6 20.Ree1 Bd5 21.f3 Rfe8 22.Rxe8+ Rxe8 23.Re1 Rxe1+ 24.Bxe1 Qe6³ 25.Kf2 g5 26.h3 Nc4 27.Bc3 Nd6 28.g4 Kg7 29.Qe3 Qxe3+ 30.Kxe3= 1/2-1/2 Zaja,I-Dizdar,G/Pula 1998/CBM 064/(36)] 7...0-0 8.Bxc4 c5 9.0-0 cxd4?! Again black releases the tension.Which opens the c1-h6 diagonal for the B on c1 and also gives space advantage to white.When the White N is at f3 black can have less problems,but with the N on g3 white will have attacking chances if he manages to get d4-d5 [9...Nc6 10.dxc5 (10.d5 exd5 11.Nxd5 Nxd5 12.Bxd5=) 10...Bxc5 (10...Qxd1 11.Rxd1 Bxc5 12.b4²) 11.b4 Be7 12.Bb2= a6 13.Nce4 b5 14.Bb3 Nxe4 15.Nxe4 Qb6 16.Rc1 a5 17.Qg4 e5 18.Qh5 axb4 19.axb4 g6 20.Qh6 Bf5 21.Rxc6 Qb8 22.Ng5 Bxg5 23.Qxg5 Kg7 24.Qf6+ Kg8 25.Bxe5 1-0 Javakhishvili,L-Alexandrova,O/Antalya 2002/EXT 2003] 10.exd4 Nc6 [10...Nbd7 11.Ba2 Nb6 12.Be3 Bd7 13.f3 Nbd5 14.Nxd5 Nxd5 15.Bf2 Rc8 1/2-1/2 Efimov, I-Groszpeter,A/Izmir 2004/CBM 104] 11.Be3 [11.d5 exd5 12.Nxd5 Nxd5 13.Bxd5 Bf6 14.Ne4 Bd4 15.Qb3 Qb6 16.Qxb6 Bxb6 17.Nd6 Bc5 18.Bf4 Bxd6 19.Bxd6 Rd8 20.Bxc6 bxc6 1/2-1/2 Javakhishvili,L-Lahno,K/Antalya 2002/EXT 2003] 11...a6?! Black does not follow the principle of the Isolated Queen Pawn(IQP) which says-"Both the players should control the d5 square(the square in front of IQP) .The player with IQP tries to d4-d5 break, while the player against IQP contols the d5 square and blocades the IQP"[%csl Rd5][%cal Gf6d5,Yd4d5] [So ¹11...Nd5! should be played.But still white has some advantage due to space advantage and ahead in devlopment;
11...b6?! 12.d5! Na5 13.Ba2 exd5 14.Nxd5 Nxd5 15.Bxd5 Bb7 16.Bxb7 Nxb7 17.Qf3 Nc5 18.Rad1 Qc8 19.Bd4 Ne6 20.Nf5 Bc5 21.Qg4 f6 22.b4 h5 23.Qxh5 Nxd4 24.Rxd4 Qe8 25.Qxe8 Rfxe8 26.bxc5 Re5 27.g4 Rxc5 28.Rd7 Kh8 29.Re1 1-0 Alberti,A-Quaranta,C/Venice 2003/EXT 2004] 12.Ba2?! [¹12.d5!? was tempting but after 12...exd5 13.Nxd5 Nxd5 14.Bxd5 Bf6² Black can fight for equality but white is on the top.I wanted more!!] 12...b5?! [¹12...Nd5= was still to be played 13.Rc1 Bf6 and black has a passive position only but as my opponent had played 11...a6 i expected 12...b5 and knew that he would not play Nd5] 13.Rc1? [¹13.d5! One should strike the iron when it is hot 13...exd5 14.Nxd5 Nxd5 (14...Be6² 15.Nxf6+ Bxf6 16.Bxe6 fxe6 17.Qg4² The e6 pawn is black's only weakness but it is very difficult to exploit it[%csl Re6]) 15.Bxd5 Bb7 16.Nf5± because 16...Bf6? 17.Nd6+- I had missed this move so i had thought black is comfortable here] 13...Bb7? Black does not care about the deady d4-d5 break[%cal Rd4d5] [¹13...Na5!? 14.Nce4 (14.d5 Nc4!=) 14...Nxe4 15.Nxe4 Bb7=] 14.d5!± The key move in the IQP positions 14...exd5 [¹14...Na5 15.dxe6 Nc4± Black should sacrifiace a pawn otherwise he will lose more than a pawn!!] 15.Nxd5 Nxd5 [15...Rc8? 16.Bb6 Qe8 17.Nf5 Nxd5 18.Bxd5 g6 19.Nxe7+ Qxe7 20.Bc5+-] 16.Bxd5 Na5?! [¹16...Rc8 17.Nf5 Bf6 (17...Re8 18.Qg4 Bf6 19.Nh6++-) 18.Bc5±] 17.Bxb7 Nxb7 [17...Qxd1 18.Rfxd1 Nxb7 19.Rc7+- [%csl Rb7,Re7][%cal Gc7e7,Gc7b7]] 18.Nf5 Nd6?? While black played this he had not seen white's next move and the upcomming danger [18...Bf6 19.Qf3! Na5 (19...Rb8 20.Bf4+-) 20.Rfd1 Qb8 (20...Qe8 21.Bc5+- [%csl Rf8]) 21.Nh6+ Kh8 22.Bc5+- [%csl Rf6,Rf7,Rf8];
18...Qxd1?? 19.Nxe7+ check!! 19...Kh8 20.Rfxd1+-;
18...g6 19.Nh6+ Kg7 20.Qf3 Nd6 21.Rfd1± |^] 19.Bb6!! I had seen this move and all its variations when i played 14.d5! 19...Qd7 [19...Qxb6 20.Nxe7+ Kh8 21.Rc6!+- winning a piece(N)[%csl Rb6,Gc6,Rd6]] 20.Nxe7+ Qxe7 21.Re1! Not giving black any chances.Winning the piece! [‹21.Rc7?! Qe5 22.f4 Qf6 23.Rc6 Rad8 I felt i should not give black any chances by not playing f2-f4 and win more than an exchange] 21...Qf6 [21...Qd7 22.Rc7 Qd8 23.Rc6+- [%csl Rd6,Rd8][%cal Gb6d8,Gc6d6,Gd1d6];
21...Ne4 22.Qd4!+- [%csl Re4][%cal Gf2f3,Ge1e4,Re4e7]] 22.Rc6 [%csl Rd6][%cal Gc6d6,Rd6f6] 22...Rfe8!? With the threat of back rank mate black gains a move.Now my opponent though he had saved the piece with some tactics. [22...Rad8 23.Bxd8 Rxd8 24.Rxd6+-] 23.Rxe8+ Rxe8 24.h3! Now white clears the backrank and allows black to defend the piece! [‹24.Bc5 Qe5 25.f4!+-;
24.Bc7?? Qe7=;
=24.g3 also same as h3] 24...Re6 Black piece is saved???My opponent saw Bd4 etc,etc and felt comfortable as he had saved the piece.But... ................. 25.Qxd6! No......Black had forgotten his own back rank weakness while he was giving back rank mate threats to white!![%cal Gc6c8, Rc8g8] [25.Bd4 Qe7 26.Bc3± White is still slighly bettter] 25...Re1+ [25...Rxd6 26.Rc8+ Rd8 27.Rxd8+ Qxd8 28.Bxd8+-] 26.Kh2 Qxd6+ 27.Rxd6 h6 28.Be3 Rb1 29.b4 Rb3 30.Rxa6 g6 31.Ra8+ Kh7 32.h4 Rd3 33.Rb8 g5 34.hxg5 hxg5 35.Rxb5 Rxa3 36.Rxg5 Rb3 37.b5 f6 38.Rc5? [38.Rd5 was more accurate] 38...Kg6 39.Kg3 Rb4 40.Rd5+- 1-0
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