Irish Senior Championship 2004 - Round 5

The Kilkennyman falters today at the hands of the very strong Gawain Jones, who is now living in Ennis. I give the game below with some light notes, it was an exciting game to watch.

Full results

 1 KARL Mc PHILLIPS [4]      0:1    GAWAIN JONES FM  [3]  
 2 JOE RYAN FM      [3]      1/2    MARK ORR IM      [2.5]
 3 JOSEF MUDRAK FM  [2.5]    0:1    JOHN A. JOYCE    [2.5]
 4 STEPHEN JESSEL   [2.5]    1:0    ANTHONY FOX      [2]  
 5 KEVIN WHITE      [2]      0:1    STEPHEN BRADY FM [2]  
 6 PAUL WALLACE     [2]      0:1    PHILIP SHORT FM  [2]  
 7 EAMON KEOGH      [1.5]    1/2    EDMUND SOH       [1.5]
 8 PAUL WALSH       [1.5]    0:1    GORDON FREEMAN   [1.5]
 9 RAY BYRNE        [.5]     0:1    RORY QUINN       [1.5]
10 TOM HEALY        [1]      1/2    ALAN BEVERIDGE   [1]  

The eagled eyed among you will have noticed that this was not the draw I posted yesterday, I'm afraid I had a result posted incorrectly to me and that's what caused the confusion.

The standings below are correct.

Standings after Round 5

Place Name             Rtg   Score M-Buch.

 1-2  KARL Mc PHILLIPS 2172  4.0   10.0
      GAWAIN JONES FM  2453  4.0    9.5
 3-5  JOHN A. JOYCE    2271  3.5    9.0
      JOE RYAN FM      2294  3.5    8.0
      STEPHEN JESSEL   2238  3.5    7.5
 6-8  MARK ORR IM      2338  3.0    9.5
      STEPHEN BRADY FM 2365  3.0    7.5
      PHILIP SHORT FM  2298  3.0    6.5
9-11  JOSEF MUDRAK FM  2391  2.5    8.5
      GORDON FREEMAN   2066  2.5    7.0
      RORY QUINN       2047  2.5    5.5
12-16 ANTHONY FOX      2123  2.0    7.5
      KEVIN WHITE      2062  2.0    7.5
      EDMUND SOH       2049  2.0    7.5
      PAUL WALLACE     2171  2.0    7.0
      EAMON KEOGH      2122  2.0    5.0
17-19 PAUL WALSH       2012  1.5    8.0
      TOM HEALY        1902  1.5    6.0
      ALAN BEVERIDGE   2138  1.5    5.5
 20   RAY BYRNE        1941  0.5    6.5

The standings charts I give list players on the same score according to a M-Buch score. Maybe I should explain what that is. In a swiss event, many players will end up on the same score, that's inevitable. We do need some sort of tie-breaking system to rank these players. One of the most often used in days gone by was "The sum of opponents score". You simply add up the score achieved by all the opponents of each of the tied players and that's your Buchholz score. However this has some weaknesses, the main one being that if one of the tied players had met the run-away winner of an event while the other had not, it would be almost impossible for the player who did not meet the run-away winner to win the tie-break.

One way to counter-act this effect is to leave out the highest and the lowest scoring opponents when calculating a players Buchholz. The idea is to eliminate distortions in Buchholz values caused by taking into account games against run-away winners and bottom placed players. This is known as the Median Buchholz score and this is the value you see in the tie-breaking column on the standings.  It is widely accepted as the fairest tie-breaking system for swiss events.

Games

(62) McPhillips,K - Jones,G [A59]
Irish Championship (5), 2004
[Gerry Graham]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 g6 6.Nc3 Bxa6 7.e4 Bxf1 8.Kxf1 d6 9.Nf3 Bg7 10.g3 0-0 11.Kg2 Nbd7 12.Re1 Ra6 13.Qc2 Qa8 14.a4 Rb8 Because White is a pawn up, Fritz 8 prefers his position but only by 0.28. As he normally values a pawn at 1.00, we can assume he can evaluate, at least to some extent, the value to Black of the open queenside files. I think most human players would prefer to play Black here, but maybe I'm wrong. 15.b3 e6 16.dxe6 fxe6 17.Rb1 d5 18.exd5 exd5 19.Bf4 Rb4 20.Nb5 Rb6 21.Nc7 Qb7 22.a5








OK, don't blink now, you might miss it, here we go... 22...Rxf4!? [Fritz, being materialistic, would have played 22...Rc6 ] 23.axb6?! [I wonder what he was planning to play after 23.gxf4 maybe 23...Qxc7 24.axb6 Qxf4] 23...Rxf3! What else did you expect, eh. 24.Kxf3 d4+ 25.Ke2 Qxb6 26.Qc4+ Kh8 27.Nd5 Qe6+ 28.Ne3 Qe4 29.Rbd1 Ne5 30.Qc2 Qf3+ 31.Kf1 Qh1+ 32.Ke2 Qf3+ 33.Kf1 Qh1+ Black is not repeating the position to try for a draw, he's mearly getting a bit closer to the time control so he'll have more time to figure out these amazing complications after mover 40. 34.Ke2 Qa8








35.Nc4? [Fritz reckons 35.f4? was his best chance, but I'm not sure, have a look at this 35...dxe3 36.fxe5 Qg2+! 37.Kd3 (37.Kxe3 Qxc2 38.exf6 Bxf6) 37...Qe4+ 38.Kc3 Nd5+ 39.Kb2 Qxe5+ and I think Black is winning.; Hiarcs 7.32 finds the best defense, I think.. 35.Kf1 dxe3 36.Rxe3 Neg4 37.Red3³] 35...Qf3+ 36.Kf1 d3 37.Rxd3 Nxd3 38.Re3 Qh1+ 39.Ke2 Nxf2 40.Qd2 N2e4 41.Qd8+ Ng8 42.Nd6 Qxh2+?? Not the clearest path to victory, Fritz shows us [42...Qg2+ 43.Kd3 c4+! 44.Kxc4 Qc2+ 45.Kd5 Nxd6 46.Kxd6 Qd2+] 43.Kd3 Nxd6 44.Qxd6 Qb2 45.Qxc5 Qxb3+ 46.Ke2 Qb2+ 47.Kf3 Bd4 0-1

 

John Joyce showed his teeth to our Czech friend today with this attractive game, sorry no notes, I didn't have time;

(63) Mudrak,J - Joyce,J [A80]
Irish Championship (5), 2004

1.d4 f5 2.h3 Nf6 3.g4 d5 4.Qd3 c5 5.dxc5 Nc6 6.gxf5 e5 7.fxe6 Bxc5 8.Nf3 0-0 9.Bg2 Bxe6 10.0-0 Qc8 11.Ng5 Bf5 12.e4 Bg6 13.Be3 Nb4 14.Qd2 dxe4 15.Bxc5 Qxc5 16.Ne6 Qb6 17.Nxf8 Rxf8 18.Na3 Nbd5 19.Nc4 Qc7 20.b3 b5 21.Ne3 Nf4 22.Ng4 Nxg4 23.hxg4 Qc8 24.f3 Qc5+ 25.Kh1 e3 26.Qe1 e2 27.Rg1 Be8 28.Qg3 Bc6 29.g5 Qe3 30.Kh2 Nxg2 31.Rxg2 Rxf3 32.Qg4 Qe5+ 33.Rg3 Qxa1 34.Rxf3 Qe5+ 0-1

Tomorrow's pairings -

Round 6 Pairings

 1 GAWAIN JONES FM [4]    :  JOE RYAN FM      [3.5]
 2 STEPHEN JESSEL  [3.5]  :  KARL Mc PHILLIPS [4]  
 3 JOHN A. JOYCE   [3.5]  :  STEPHEN BRADY FM [3]  
 4 PHILIP SHORT FM [3]    :  MARK ORR IM      [3]  
 5 RORY QUINN      [2.5]  :  JOSEF MUDRAK FM  [2.5]
 6 GORDON FREEMAN  [2.5]  :  EAMON KEOGH      [2]  
 7 EDMUND SOH      [2]    :  KEVIN WHITE      [2]  
 8 ALAN BEVERIDGE  [1.5]  :  PAUL WALLACE     [2]  
 9 ANTHONY FOX     [2]    :  PAUL WALSH       [1.5]
10 TOM HEALY       [1.5]  :  RAY BYRNE        [.5] 

Gerry Graham