Monday, 17 July 2023

The pawn is dead, long live the pawn

 When trying to 'gamify' chess to small children, I usually tell them that the pawn has one hidden power, and one super power. The super power is the ability to transform into another, stronger piece when it reaches the end of the board. And the hidden power is that hs the weakest power of all the pieces. So anything it attacks is either more valuable or at worst, of equal value.

And to demonstrate ...


Press,Shaun - Khadkar,Sameet [D77]
Gungahlin Rapid ---, 11.07.2023


Sunday, 16 July 2023

Wax on, wax off

 One of the roles of any chess club, or chess tournament , is to help newer players improve their chess. In earlier days, this usually involved to gift of wisdom from a more experienced player at the competition of a game. As I have noted elsewhere, this has often been replaced by a quick trip to the laptop, so see how. many centi-pawns your first choice moves lost.

However it is still possible to pick up some good training tips as events, even if some of them come out of left field. One such suggestion given to a new, but struggling player, was to watch the movie 'Karate Kid' , especially the 'wax on, wax off' scene. The intention was to demonstrate the importance making some chess concepts so ingrained, that there was no need to spend time thinking about them. Now whether this is a real thing is open to debate, but in this specific case, the advice seemed to work. Having only won a couple of games over the last 4 months of Street Chess, the player concerned not only exceeded that total, but did so by winning 3 games in a row. For a sample size of 1, it looks like an effective training method!

Wednesday, 12 July 2023

2023 Winter Cup (AKA ANU Open)



ACT Winter Open 2023

28-30 July (One round Friday evening, three Saturday, two Sunday)

Format: Open section and Under 1600 Section (ACF)

Time control: 60m+30s inc (FIDE Rated except for players 2400+)

Schedule: Round 1 Friday 28th 7PM,

Round 2 Sat 29th 10am, Rd 3 2pm, Round 4, 6pm

Round 5 Sun 30th 10am, Round 6 2pm Prize giving 6pm

Entry Fee: $80 ($60 concession) - GM, IM, WGM and WIM Free

Prizes: $1000 1st Open, $400 1st Minor $3600 in total

Venue: Campbell High School, Treloar Cres Campbell ACT

Booking link: https://www.trybooking.com/CJWCT

Monday, 10 July 2023

2023 NSW Rapid Championship

 Junior player Harvey Zhu was the surprise winner of the 2023 NSW Rapid Championship. Seeded 12th in the tournament he scored an impressive 6.5/7, finishing a full point clear of 2nd place. After a 2nd round draw, he reeled of 5 straight wins, beating IM George Xie in round 6 and FM Alexis Vargas Arteaga in the final round. 

In 2nd place were 12 players tied on 5.5/7, including Xie, Vargas Arteaga and top seed FM Jason Hu. Hu had a rough start, losing in round 1 after dropping a queen, and drawing his 4th round game. With the large field of 134 players, a single lost point was enough to drop players out of the running.

Despite the size of the field the event ran quite smoothly. There were no major disputes and the tournament was played in good spirits. The NSWCA also doubled the advertised prize pool due to the large entry, with the winner taking home $600 for 1st. With ACF Rapid ratings being used to seed the tournament, the rating prize winners were a mix of adult and junior players, instead of the usual case of underrated juniors taking home the cash.

Full results can be seen at https://www.vegaresult.com/vega/index.php?id=2338


(*I was a paid official for this event *)

Saturday, 8 July 2023

How many rounds?

 I saw a question on one of Facebook arbiters groups, asking how many rounds for a 16 player tournament. Most arbiters suggested 5 rounds (sqrt(n)+1 rounds, where n is the number of players) while the most imaginative answer was 15. This is technically correct as the original question did not specify a format. A few did suggest 4 rounds would do, factoring the chances that some games would be drawn.

Whether the latter answer is correct will be put to the test at tomorrows NSW Rapid Championship. The event has a field of 142 and is scheduled for 7 rounds. The risk is that if all games are decisive there is a chance that 2 players may score 7/7, without playing each other.  Of course this almost never happens, but it is still dependent on how many games per round are expected to be drawn. Doing a rough, back of the envelope calculation, I estimate around 12 to 15% of games in each round (between players in the leading group) need to be drawn to find a clear winner. So apart from some interesting chess, I will also have one eye on whether my calculations match reality.

(** I am a paid arbiter for this event **)

Thursday, 6 July 2023

2023 Women's World Championship

 The 2023 Women's World Championship is already 2 games in, although both games have been drawn. It is an all Chinese matchup with Wenjun Ju playing Tingjie Lei. Most pundits have Ju as the favourite for this match, based on match experience.

The first game was a Ruy Lopez Berlin variation, although it wasn't as drawish as the opening may indicate. In fact White sacrificed a pawn in the opening, but regained it with a better position. However, Jun was able to reach a rook and pawn ending, and by that stage it was definitely drawn.



Lei Tingjie (2554) - Ju Wenjun (2566) [C67]
FIDE WOMEN'S WORLD CHAMPIONSHIP MATCH 20 SHANG HAI, China (1.1), 05.07.2023


Tuesday, 4 July 2023

Taking the only chance

White to play

The final round of the 2023 Belconnen Cup at the Eastlake Gungahlin Chess Club saw a tricky King and Pawn ending on the 2nd board. In the diagrammed position White pushed the b pawn, with the plan of distracting the Black king long enough so as to stop the king side pawns. It turned out that (a) the plan worked but (b) Black missed a winning idea.

The line that was played was 1.b6 Kc6  2.b7 Kxb7 3.Kxd5 Kc7 4.Ke5 Kd7 5.Kf6 g4 6.Kg5 h5 7.Kxh5 f5 8.Kg5 Ke6 9.Kf4 Kf6 10.e4 fxe4 11.Kxe4 Kg5 12.Ke3 1/2/12

While watching the game I wondered if moving the h pawn first was better, as the king does not need to move to c6 straight away. The the threat of g4-h4-g3 is hard to meet for White. In the post mortem the brains trust of GCC members could not find a win, but with some computer assistance, it turns out that the win was there.

1...h5!! 2.b7 Kc7 3.Kxd5 g4 4.Ke4 h4 5.Kf4 f5! 6.e4 g3 7.hxg3 h3! 8.Kf3 fxe4+ 9.Kf2 Kxb7 10.Kg1 e3 -+

Other first move tries for White are equally bad, so in the end, he did well to save the half point.