The Chessgames Challenge

The World vs Gert Jan Timmerman
C U R R E N T P O S I T I O N

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Can a group of chess amateurs team up to beat a grandmaster? Find out in the Chessgames Challenge! You can vote for the move you think is best, and discuss the game with other members on this page.

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[G.J. Timmerman]

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GAME OVER: 1-0

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MOVES:
1.d4 f5 2.g3 Nf6 3.Bg2 g6 4.c4 Bg7 5.Nc3 O-O 6.Nf3 d6 7.O-O c6 8.Qb3 Na6 9.Rd1 Kh8 10.Qa3 Nc7 11.d5 Bd7 12.Rb1 a5 13.dxc6 bxc6 14.c5 Ne4 15.cxd6 exd6 16.Bf4 d5 17.Be5 Re8 18.Bxg7+ Kxg7 19.Rbc1 Qe7 20.Qxe7+ Rxe7 21.Na4 Nb5 22.Nb6 Ra6 23.Nxd7 Rxd7 24.Ne5 Rd6 25.f3 Nf6 26.a4 Nc7 27.Bf1 Re6 28.f4 Ne4 29.e3 Rb6 30.Bd3 Na6 31.b4 Nxb4 32.Bxe4 fxe4 33.Nd7 Rb7 34.Nc5 Ree7 35.Nxb7 Rxb7 36.g4 Rc7 37.Rc5 Ra7 38.h4 Ra6 39.Rcc1 Kf6 40.Rf1 Nd3 41.Rb1 h5 42.gxh5 gxh5 43.Rb8 c5 44.Rfb1 d4 45.Kf1 dxe3 46.Rf8+ Ke7 47.Rbb8 Rg6 48.Rbe8+ Kd6 49.Rxe4 Kd5 50.f5 Rg3 51.Rfe8 c4 52.f6 Rf3+ 53.Ke2 Rxf6 54.Kxe3 Rc6 55.Rd4+ Kc5 56.Rb8 Re6+ 57.Re4 Rxe4+ 58.Kxe4 Nf2+ 59.Kf3 Ng4 60.Rb5+ Kd4 61.Rxh5 c3 62.Ke2 1-0
GAME OVER thank you for playing	it is now 14:48:29
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< Earlier Kibitzing · PAGE 1783 OF 1783 · Later Kibitzing >
Oct-11-08		DanLanglois: <chesscard: 1)Gypsy: Dear Gypsy, if you are calling me "dweeb" let me just answer you this way: In the last 48 hours, I saved the lives of 2 people who presented with a blood pressure of 50 and heart rate of 30. One of them I started at 3 am and worked until 7 am. When was the last time you did that? > dweeb.

Oct-11-08		ThePawnOTron2: 31.b4! decoys the knight away from the c5-square for upcoming fork. 32.Bxe4! destroys the other defender. 33.Nd7! drives the rook onto a square where it can be forked, and 34.Nc5! forks them. Definitely a favorite game. --ThePawnOTron2

Jan-03-09		WhiteRook48: I'm getting bored of that dancing rook. Why not another piece dancing?

Jan-04-09		WhiteRook48: like a bishop?

Jan-20-09		WhiteRook48: hey, why should you gloat over victory?

Feb-08-09		bluberry66: this is le wierdest thing ever

Feb-18-09		WhiteRook48: 1...f5 is good, but not absolute.

Feb-23-09		WhiteRook48: I like the trap behind 61...c3! 62. Kxg4?? c2!!

Feb-24-09		WhiteRook48: is Black busted by the RR vs RN endgame?

Jul-04-09		imag: I did some analysis with Rybka 3 on this game and decided to post it. <1.d4 f5 2.g3 Nf6 3.Bg2 g6 4.c4 Bg7 5.Nc3 O-O 6.Nf3 d6 7.O-O c6 8.Qb3 Na6 9.Rd1 Kh8 10.Qa3 Nc7 11.d5 Bd7> click for larger view Here, Rybka 3 prefers 12.dxc6 to 12.Rb1 (which was played): [+0.31] d=26 12.dxc6 bxc6 13.Rb1 Rb8 14.b4 a6 15.c5 Ne4 16.Bb2 Nb5 17.Nxb5 axb5 18.Bxg7 Kxg7 19.Nd2 Nf6 20.cxd6 exd6 21.Qc3 d5 22.Nf3 Ra8 23.Qb2 Re8 24.Rbc1 Qe7 25.e3 Qd6 <12.Rb1 a5 13.dxc6 bxc6 14.c5> click for larger view I recall that I considered 14...d5 to be better than 14...Ne4, but it turns out that 14...Ne4 might be slightly better after all. [+0.38] d=25 14...Ne4 15.cxd6 exd6 16.Bf4 d5 17.Be5 Re8 18.Bxg7 Kxg7 19.Rbc1 Qe7 20.Qxe7 Rxe7 21.e3 a4 22.Nd4 Nf6 23.a3 Ne6 24.Na2 Nxd4 25.Rxd4 Be8 26.Nb4 Ne4 27.Bxe4 fxe4 28.Rc5 Rb7 29.h4 Bd7 [+0.42] d=25 14...d5 15.Bf4 Bc8 16.e3 Ne6 17.Be5 Ba6 18.Nd4 Nxd4 19.exd4 Re8 20.Re1 e6 21.Rbd1 Nd7 22.Bd6 Qc8 23.Na4 Qb7 24.Re3 Bb5 25.Nc3

Jul-04-09		imag: Continuing.... <14...Ne4 15.cxd6 exd6 16.Bf4 d5 17.Be5 Re8 18.Bxg7+ Kxg7 19.Rbc1> click for larger view Some team members thought that maybe 17...Bf6 was better than 17...Re8 but Rybka 3 disagrees. It is also worth noticing that Rybka 3 even at low ply values 19.Rbc1 higher than 19.Nd4 which was the best move according to Rybka 2.3.2: [+0.38] d=23 17...Re8 18.Bxg7 Kxg7 19.Rbc1 Qe7 [+0.54] d=23 17...Bf6 18.Rbc1 Ne6 19.Na4 Ra7 20.b3 Kg8 21.Qb2 N4g5 22.Ne1 Bxe5 23.Qxe5 Qe7 24.Nd3 Ne4 25.Nf4 Qf6 26.Qxf6 <17...Re8 18.Bxg7+ Kxg7 19.Rbc1> click for larger view Again GM Timmerman chooses probably the best move: [+0.33] d=24 19...Qe7 20.Qxe7 Rxe7 21.Na4 Rb8 22.Nd4 Rb4 23.b3 Nb5 24.Nxc6 Bxc6 25.Rxc6 Nd4 26.Ra6 Nxe2 27.Kf1 N2c3 28.Nxc3 Nxc3 29.Rd3 Nxa2 30.Bxd5 Nc1 31.Rc3 Ne2 32.Rc5 Nd4 33.Rcxa5 Nxb3 34.Ra7 Nd2 [+0.41] d=24 19...Qf6 20.Nd4 Reb8 21.e3 a4 22.Bf1 Rb7 23.f4 Rb6 24.Nf3 Qd6 25.Qxd6 Nxd6 26.Rd4 Rxb2 27.Nxa4 Rxa2 28.Nb6 Rd8 29.Ne5 Be8 30.Nxc6 Bxc6 31.Rxc6 Nde8 32.Rd1 Ra3 33.Kf2 Rd6 34.Rxd6 Nxd6

Jul-04-09		imag: Continuing: <19...Qe7 20.Qxe7+ Rxe7 21.Na4> click for larger view At the time, 21...Nb5 really surprised us because it was considered inferior to 21...Rb8. Rybka 3 fully agrees: [+0.46] d=25 21...Rb8 22.e3 Rb4 23.b3 Nb5 24.Rd3 Be8 25.Ne1 Na3 26.Bf1 Rbb7 27.Rd4 Ra7 28.Kg2 g5 29.Nf3 Kf6 30.Be2 Rac7 31.Nd2 Nxd2 32.Rxd2 f4 33.exf4 gxf4 [+0.71] d=25 21...Nb5 22.e3 Rb8 23.Bf1 Nbd6 24.b3 Nb7 25.h4 Rf8 26.Nb6 Nd8 27.Nd4 Be8 28.Kg2 Rf6 So this was GMT's first important mistake. Note that after 21...Nb5 White had a significant (+0.7) advantage according to Rybka 3. Also interesting is that 22.e3 is considered better than 22.Nb6. <21...Nb5 22.Nb6 Ra6 23.Nxd7 Rxd7 24.Ne5 Rd6> click for larger view The most difficult World Team's decision: f3 or f4? Rybka 3 thinks that both are equally good. Note that after 25.f3, Rybka 3 prefers 25...Ng5 to 25...Nf6 (played). [+0.64] d=26 25.f4 a4 26.Bxe4 fxe4 27.a3 Kf6 28.Rc5 Nc7 29.Rdc1 Ne6 30.Rxc6 Raxc6 31.Rxc6 Rxc6 32.Nxc6 d4 33.Kf2 g5 34.e3 d3 35.Ke1 Nc5 36.Nd4 Nb7 37.b3 gxf4 38.gxf4 Na5 39.bxa4 Nc4 40.Nb5 [+0.60] d=25 25.f3 Ng5 26.Bf1 [+0.48] d=25 25.e3 a4 26.Bf1 Rb6 27.f3

Jul-04-09		imag: Continuing: <25.f3 Nf6 26.a4 Nc7 27.Bf1 Re6 28.f4> click for larger view Here, sliding forward showed that 28...Ng4 might be better than 28...Ne4 and was considered the main move. Rybka 3 agrees: [+0.59] d=26 28...Ng4 29.Nxg4 fxg4 30.Rc5 Rd6 31.e4 Ne6 32.Rcc1 Rb6 33.Bg2 Rd8 34.exd5 cxd5 35.Rxd5 Rxb2 36.Rxd8 Nxd8 37.Bd5 Kf6 38.Rc5 Rb1 39.Kf2 Rb2 40.Ke3 Rxh2 41.Rxa5 Ke7 [+0.83] d=25 28...Ne4 29.e3 Rb6 30.b4 axb4 31.a5 Rb7 32.Nxc6 Nc3 33.Nd8 Ra7 34.Nxe6 Nxe6 35.a6 Nxd1 36.Rxd1 b3 37.Rxd5 Nc7 38.Rd7 Kh8 39.Kf2 b2 40.Rd8 Kg7 41.Rb8 Nxa6 42.Rxb2 Nc5 43.Kf3 Ra3 So 28...Ne4 was probably a second important mistake from GM Timmerman. <28...Ne4 29.e3 Rb6> click for larger view A surprise! According to Rybka 3, 30.b4 was much better than 30.Bd3 (played). I don't recall why we discarded 30.b4, but it seems we must have missed something. [+0.83] d=25 30.b4 axb4 31.a5 Rb7 [+0.58] d=25 30.Bd3 Na6 31.b4 <30.Bd3 Na6 31.b4 Nxb4 32.Bxe4 fxe4 33.Nd7 Rb7 34.Nc5 Ree7 35.Nxb7 Rxb7> click for larger view Rybka 3 agrees with our 36.g4 as the best move: [+0.46] d=27 36.g4 Kf6 37.Rf1 h5 38.h3 h4 39.Rc5 Ra7 40.Kg2 Ra6 41.Rcc1 Rb6 42.f5 g5 43.Kg1 Ke7 44.Rc5 Ra6 45.Rc3 Nd3 46.Rb1 Nb4 <36.g4> click for larger view The most important moment in the game. After 36...Kf6 GM Timmerman could have drawn. Rybka 3 indeed rates 36...Kf6 as a better move than 36...Rc7. Also note that Rybka 3 finds 38.h4 as best even at low ply: [+0.46] d=27 36...Kf6 37.Rf1 h5 38.h3 h4 39.Rc5 Ra7 40.f5 g5 41.Kg2 Ra6 42.Rc3 Rb6 43.Rb1 Ke7 44.Rc2 Rb8 45.Rc5 Ra8 [+0.59] d=27 36...Rc7 37.Rc5 Ra7 38.h4 Ra6 39.Rc3 Na2 40.Rc2 Nb4 41.Rcc1 Kf6 <36...Rc7 37.Rc5 Ra7 38.h4 Ra6 39.Rcc1 Kf6 40.Rf1 Nd3 41.Rb1 h5 42.gxh5 gxh5 43.Rb8 c5 44.Rfb1 d4 45.Kf1 dxe3 46.Rf8+ Ke7 47.Rbb8 Rg6 48.Rbe8+ Kd6 49.Rxe4 Kd5 50.f5 Rg3 51.Rfe8 c4 52.f6 Rf3+ 53.Ke2 Rxf6 54.Kxe3 Rc6 55.Rd4+ Kc5 56.Rb8 Re6+ 57.Re4 Rxe4+ 58.Kxe4 Nf2+ 59.Kf3 Ng4 60.Rb5+ Kd4 61.Rxh5 c3 62.Ke2 1-0> click for larger view The World wins!

Jul-04-09		Ron: Interesting study <imag>. <A surprise! According to Rybka 3, 30.b4 was much better than 30.Bd3 (played). I don't recall why we discarded 30.b4, but it seems we must have missed something.> I haven't analyzed 30. b4 but it seems that the idea is to make white's 'a' pawn passed, and bothersome for black. 30 b4 might deserve an exclaim. If I recall correctly, the move we played 30. Bd3 was <RandomVisitor>'s Rybka first choice.

Jul-04-09		imag: And one more thing to show how strong Rybka 3 is: Before playing 38.h4 we were worried about 38...Kf6 until the "rook sac" was found by very deep sliding forward. It went: 38.h4 Kf6 39.f5 Ke5 40.Rf1 Kd6 41.fxg6! and Black can't take the rook because of 41...Kxc5 42.Rf7 1-0 Well, Rybka 3 does not even consider taking the rook, even at 10 ply... it doesn't even consider chasing the rook (the whole Kf6-Ke5-d6-c5 idea). One might even say that Rybka 3 somehow "foresees" that chasing the rook is simply bad for Black. She does it in seconds and I remember I spent many hours on this line with Rybka 2.3.2. The strength of Rybka 3 is just .... frightening.

Jul-04-09		Ron: Looking briefly over the discussion between 30. Bd3 versus 30. b4, it seems that a main critcism of 30. b4 is that, while it led to an endgame giving us a material advanatge, the endgame is really a draw, and one of those cases of over-optimistic comp evaluation. But maybe 30. b4 gave more practical chances for White than 30 Bd3. The voting was lopsided: 30.Bd3 186 votes (70.2%) 30.b4 37 votes (14.0%) 30.Rc2 16 votes (6.0%) 30.Nc4 16 votes (6.0%) 30.Bb5 6 votes (2.3%)

Jul-04-09		Tabanus: <imag> Good work! :) I checked 30.b4, <RV> had (30-ply) Update 2200 02Feb 1. (0.75): 30.b4 ... 2. (0.60): 30.Bd3 ..., but 30.Bd3 won (70% vs 30.b4 14%) see around page 1099.

Jul-04-09		Dionyseus: <imag> <The strength of Rybka 3 is just .... frightening > Wait until Rybka 4 comes out ;p

Jul-04-09		Tabanus: Yup. With 30.Bd3 we played as Rybka 4 ;)

Jul-04-09		imag: <Tabanus: <imag> Good work! :) I checked 30.b4, <RV> had (30-ply) Update 2200 02Feb 1. (0.75): 30.b4 ... 2. (0.60): 30.Bd3 ..., but 30.Bd3 won (70% vs 30.b4 14%) see around page 1099.> I read some kibitzing and indeed, 30.b4 line was probably drawn. So fortunately for us, it seems that Rybka 3 also makes mistakes sometimes.

Jul-05-09		Tabanus: Rybka 2.3.2a 27-ply 1. (0.72): 30.Bd3 Nf6 31.b4 Rxb4 2. (0.49): 30.b4 axb4 31.a5 Rb7 So 30.b4 became no. 1 at 28-ply or more.

Jul-05-09		Thorsson: I'd be interested to see Rybka 3's in depth analysis of 30.b4.

Jul-05-09		Hugin: I strongly belive the analysis showed if Timmerman had not played 36..Rc7? but 36..Kf6 he would still be able to hold a draw...Of course it was deep positional analysis that revelead that.

Jul-07-09		whatthefat: <imag> Fascinating work! I'll certainly take it in to account when I complete my post-mortem of this game.

Nov-11-09		The Chess Express: I believe that the only way for The World Team to be seriously challenged is for another world champion to play us. Kasparov was able to prevail, and it will probably take a top 5 player to have a chance of beating us.

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