| Player | Section | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Score |
|---|---|---|---|---|---|---|---|
| Dave Marshall | Median | 1 | 0 | 1 | 1 | ½ | 3½ |
| Mark Leonard | Median | 1 | 1 | 1 | ½ | 0 | 3½ |
| Gareth Williams | Intermediate | ½ | 1 | 1 | 1 | 0 | 3½ |
| Steve Williams | Minor | 0 | 1 | 1 | 0 | 0 | 2 |
| Louis Burton | Standard | 1 | 1 | 0 | 0 | ½ | 2½ |
Monday, March 12, 2012
Blackpool Congress 2012
Here are the results for the Trowbridge players at Blackpool this year:
Tuesday, February 28, 2012
Horne vs Leonard: a Minor Piece Ending
The following position occurred in a Somerset Division 2 East game played last week. White has just (correctly) retreated his bishop from b2 by playing 38. Ba1. What moves would you consider here?
 |
| 3k4/8/1b4pp/8/n2NpPpP/P3P3/5K2/B7 b - - 0 38 |
| P. Horne vs M. Leonard |
| Black to move |
Friday, February 17, 2012
Sunday, January 29, 2012
January 2012 ECF Grades
As you are no doubt aware, the preliminary grading list has been published, with the welcome inclusion of the underlying game results data (from 2003 onwards) and a snazzy chart to boot.
In-form David Weston deservedly climbs the Trowbridge table, and he is now the highest graded of our currently active players. Also improving is Dave Marshall, whose grade now more accurately reflects his playing prowess. Louis Burton continues his inexorable climb to the world of 3 digit ratings and Anthony Ransom is also up a couple of points. However everyone else has suffered a set-back. Roy Ludlow in particular appears to have been hard done by. He had below-par results in 2011 and I'm sure he will bounce back in the next grading list.
Indeed it is surprising how easily a handful of results can affect the rating calculations. So that you may judge the accuracy of the ECF's new grading assignments, I have reproduced the January figures below. In the right-most columns I have compared the January 2012 grades with the known performance of each player, using the data available on the Trowbridge website (up to and including the 26th of January).
Of the 14 games I've played this season, 11 took place in 2011, but only 6 have been submitted for grading. For some reason the Wiltshire league and the Frome internal club games do not appear in the list of interim results. The grade given to me by the ECF happens to be 3 points less than my actual performance over the last 30 games.
I think the conclusion we should draw is that the ECF grades should be taken with a pinch of salt. They are just numbers, after all, and are not meant to be viewed as an absolute indicator of someone's playing strength. I've long held the opinion that the values should carry a confidence interval of ±10, and this fits the numbers above rather well.
In-form David Weston deservedly climbs the Trowbridge table, and he is now the highest graded of our currently active players. Also improving is Dave Marshall, whose grade now more accurately reflects his playing prowess. Louis Burton continues his inexorable climb to the world of 3 digit ratings and Anthony Ransom is also up a couple of points. However everyone else has suffered a set-back. Roy Ludlow in particular appears to have been hard done by. He had below-par results in 2011 and I'm sure he will bounce back in the next grading list.
Indeed it is surprising how easily a handful of results can affect the rating calculations. So that you may judge the accuracy of the ECF's new grading assignments, I have reproduced the January figures below. In the right-most columns I have compared the January 2012 grades with the known performance of each player, using the data available on the Trowbridge website (up to and including the 26th of January).
| 2011 | Standard ECF | Performance | Diff | |
| David Weston | 149 | 155 | 162 | -7 |
| Mark Leonard | 153 | 151 | 154 | -3 |
| Derek Rothwell | 152 | 147 | 144 | 3 |
| Dave Marshall | 141 | 143 | 149 | -6 |
| Tim Woodward | 155 | 137 | 143 | -6 |
| Gareth Williams | 131 | 129 | 128 | 1 |
| Roy Ludlow | 131 | 111 | 120 | -9 |
| Louis Burton | 82 | 91 | 92 | -1 |
| Anthony Ransom | 73 | 75 | 73 | 2 |
| Nigel Crucefix | 71 | 67 | 64 | 3 |
| Richard White | ung | 59 | 56 | 3 |
Of the 14 games I've played this season, 11 took place in 2011, but only 6 have been submitted for grading. For some reason the Wiltshire league and the Frome internal club games do not appear in the list of interim results. The grade given to me by the ECF happens to be 3 points less than my actual performance over the last 30 games.
I think the conclusion we should draw is that the ECF grades should be taken with a pinch of salt. They are just numbers, after all, and are not meant to be viewed as an absolute indicator of someone's playing strength. I've long held the opinion that the values should carry a confidence interval of ±10, and this fits the numbers above rather well.
Friday, October 28, 2011
Sunday, October 23, 2011
Ganger vs Armstrong
The following "Spot the Continuation" position was given in the July 2011 edition of the British Chess Magazine. Black has just blundered with 45...Bc3? Can you find a strong move for White?
 |
| 5k2/2r1q3/2p2pQ1/1pP1p3/1P3PBP/2b5/3R2K1/8 w - - 0 45 |
| I.R. Ganger vs W. Armstrong |
Friday, October 21, 2011
A Knight in distress
White is threatening to capture the Black Knight, what is Black's crushing reply?
Black to move:
Black to move:
 |
| r6r/1p2bpk1/1q6/p2pP3/3n1P2/P1BQ4/1P4PP/R4R1K b - - 0 1 |
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