Now this is a hack

There is something deeply unsatisfying about falling victim to a basic hack. So much so that I am pretty sure I've already written a blog post about this. So rather than repeat myself, I will just give you another Super GM example to chew on. (BTW Black's last move is very nice)


Ding,Liren (2836) - Dubov,Daniil (2770) [A11]
Lindores Abbey Rapid Challenge Final 8 Online (6.4), 29.05.2020

1. c4 Nf6 2. g3 c6 3. Bg2 d5 4. Nf3 dxc4 5. O-O Nbd7 6. Na3 Nb6 7. Qc2 Be6 8. Ne5 h5 9. Naxc4 Nxc4 10. Nxc4 h4 11. Ne5 hxg3 12. hxg3 Qc8 13. Rd1 Bh3 14. Bf3 g6 15. b4 Bg7 16. Bb2 Kf8 17. a4 Nh7 18. b5 Ng5 19. bxc6 Bxe5 20. Bxe5 Nxf3+ 21. exf3 Bg2 0-1

This is silly

For players who thinks 60 seconds is too much time for an entire game of chess. Each player started with 30 seconds.

smithvillavo (1577) - harrypress1 (2316) [B01]
Hourly HyperBullet Arena https://lichess.org/L7618hr0, 29.05.2020

1. e4 d5 2. f4 dxe4 3. Nf3 c5 4. Ne5 Nc6 5. Bc4 Nxe5 6. fxe5 e6 7. O-O Ne7 8. d3 Ng6 9. Nc3 Be7 10. dxe4 O-O 11. Qf3 Bd7 12. h4 Nxe5 13. h5 Nxf3+ 14. Rxf3 Bc6 15. h6 g6 16. Bg5 Bxg5 17. e5 Qd4+ 18. Kh2 Bxf3 19. gxf3 Qxc4 20. Ne4 Bf4+ 21. Kg2 Bxe5 22. Nf6+ Bxf6 23. Rh1 Qf4 24. Rh3 Rad8 25. Rg3 Rd2+ 26. Kh3 Qh4# 0-1

The Ultimate Misclick

I do not know if this is a common occurrence, but I have now seen it happen at least twice in the last two weeks. In a drawn position in online games, I have seen players resign for no obvious reason. I can only assume that they meant to offer a draw, but clicked the resign flag instead.
While the obvious response is "they should have been more careful" I wonder if a UI redesign is called for. As Stewart Rueben once said to me "If more than 1 person doesn't understand what a phrase means, then it is worth looking at fixing it up"

Another strong open source chess engine

If you are looking to understand the inner workings of chess engines (especially the Alpha/Beta kind) then the Ethereal Chess Engine looks like a good resource. Of course you do need to be able to read code (in this case C), but it is well laid out and well commented. It contains some interesting technical information in the comments, including how many elo points a specific search feature is worth (eg Null move proving is worth around 93 rating points in strength when turned on).
You can find the source code at https://github.com/AndyGrant/Ethereal and while I have yet to compile and install it myself, based on the CCRL list is is very very strong.

Faster then slower

A number of years ago GM Yasser Seirawan suggested that best way to make chess a spectator sport was to broadcast blitz events. The idea was to attract viewers who only wanted to watch quick, high intensity games, rather than longer more drawn out contests. However, once this happened, he suggested that spectators might gravitate to watching (and playing) slower games, where the ideas and strategies aren't lost in the flurry of hand movements and clock bashing.
It turns out we are pretty much at the first stage of this now. Almost all of the big online events taking place at the moment are being played with fast time controls. And while this is good for the platforms chess is currently be played on, I hope it isn't going to be the case when face to face chess resumes.
One reason why is the game I am showing below. It is a crushing win by Magnus Carlsen over Wesley So, and involves Carlsen winning a pieces v queen middlegame. But ultimately it was decided by one bad move by So, a move he would not have played with more thinking time available.


Carlsen,Magnus (2881) - So,Wesley (2741) [E21]
Lindores Abbey Rapid Challenge Final 8 chess24.com (1.4), 24.05.2020

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 O-O 5. Bg5 c5 6. Rc1 cxd4 7. Nxd4 h6 8. Bh4 d5 9. cxd5 g5 10. Bg3 Qxd5 11. e3 Qxa2 12. Qc2 Bxc3+ 13. Qxc3 Ne4 14. Qc2 Qa5+ 15. Ke2 Nxg3+ 16. hxg3 Kg7 17. f4 Bd7 18. b4 Qxb4 19. fxg5 Rc8 20. gxh6+ Kh8 21. Qxc8+ Bxc8 22. Rxc8+ Kh7 23. Nf3 f6 24. Kf2 Qb2+ 25. Be2 Na6 26. Rxa8 Nc5 27. Rd1 Ne4+ 28. Kg1 f5 29. Bd3 Qf2+ 30. Kh1 Qxe3 31. Bxe4 fxe4 32. Rd7+ Kg6 33. Rg8+ 1-0

One of my favourite poker scenes

This scene from The Sting is one of my favourite poker scenes in any movie. Unfortunately it doesn't include the next scene where Doyle Lonnegan (Robert Shaw) says "What was I supposed to do - call him for cheating better than me, in front of the others?"

Schools chess is starting again

Some good news for chess coaches who may have been missing out on work over the last 2 months. It looks as though schools are restarting their chess coaching programs again. At least in the ACT anyway.
I've been contacted by a couple of schools that the ACT Junior Chess League running coaching programs at, and have been given some start dates for this term. Coaches still have to conform to the social distancing regulations (minimum distances, washing of hands, equipment and contact points), but at least the classes will be up an running again.

A bad time to get better

Now is possibly the worst time to be improving your chess results. On more than website I have seen posters express "mock surprise" at how well lower rated players have been performing. It clearly is a dangerous time to score upset wins, especially over players rated above 2000! 

Who doesn't enjoy a good hack?

I am still riding the "online chess is fast and loose" horse, and the latest online Super GM event is providing more evidence. In the just started Lindores Abbey Rapid Challenge, Lev Aronian goes wrong in a Petroff middlegame and after 22 moves has little choice but to resign. Apparently the culprit was 13... c5, which was played after 15 seconds of thought, although it really goes wrong after 15... c4


Carlsen,Magnus (2881) - Aronian,Levon (2778) [C42]
Lindores Abbey Rapid Challenge Online (2.6), 19.05.2020

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 O-O 8. Qd2 Nd7 9. O-O-O c6 10. h4 d5 11. Bd3 Re8 12. Rde1 Nf6 13. Ng5 c5 14. c4 h6 15. cxd5 c4 16. Bxc4 hxg5 17. hxg5 Ne4 18. Qd1 Bxg5 19. Qh5 Bxe3+ 20. Rxe3 f5 21. d6+ Be6 22. Qh7+ 1-0

Knight Tours

I was challenged to find a Knight's Tour of a 5x5 board by my daughter the other day. This didn't have anything to do with her interest in Chess, but was required to make progress in a puzzle game she was playing. I was pleased when I found the solution on my second attempt.
It then got a bit harder, when a few puzzles later, the same task was required on a 6x6 board. I must confess that I gave up after 2 unsuccessful attempts (after trying Warndorff's Rule). However my daughter did solve it shortly after, so there was no harm done. When she reached the 8x8 task (7x7 was skipped), I did the very sensible thing, and told her to look up the answer.
We did think at first that the reason they skipped 7x7 was that there were no possible solutions, but it turns out there are in fact 165,575,218,320 different solutions! What there is no solution for on a 7x7 board, is a closed tour, where the final square is a knights move away from the start square (making the path a closed circuit). 

A bad pawn doing good things

Normally in Bishop endings, you try and put your pawns on the opposite colour squares to your bishop. Of course, with every rule, you should look at the reasons why the rule is followed, and reasons for breaking it.
In the game below, I was already better, in the ending, as I won a pawn by threatening to trap a bishop. But the move I really liked was 34. ... f4. Even though it put my f pawn on the same colour square as my (and my opponents bishop), it completely crippled his 3v2 kingside pawn majority, allowing me to quickly win on the queenside.


Michelino47 (1614) - shaunpress (2392) [C63]
PNG Tournament March 2020 Chess.com, 07.04.2020

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 fxe4 5. Nxe4 Nf6 6. Qe2 d5 7. Nxf6+ gxf6 8. d4 Bg7 9. dxe5 O-O 10. Bxc6 bxc6 11. e6 Re8 12. O-O c5 13. Qb5 Bf8 14. Bf4 Bxe6 15. Rfe1 Bd7 16. Qb3 c6 17. Rxe8 Bxe8 18. Re1 Bf7 19. Qa4 Qb6 20. Qb3 Qxb3 21. axb3 Re8 22. Rxe8 Bxe8 23. Bb8 a6 24. Kf1 Bg6 25. Ne1 Kf7 26. Ke2 Ke6 27. Nd3 Kd7 28. Ba7 Bxd3+ 29. Kxd3 Kc7 30. b4 cxb4 31. Bd4 f5 32. f3 c5 33. Bf2 Bd6 34. h3 f4 35. Bh4 Be5 36. b3 Kc6 37. Bg5 Kb5 38. Bh6 a5 39. Kd2 a4 40. bxa4+ Kxa4 41. Bf8 c4 42. Kc1 b3 43. cxb3+ Kxb3 0-1

Do not do this at home

One of the features offered by some of the online chess sites is an analysis of games that you have recently played. For a long time I didn't pay much attention to this feature, but I do now use it to look for interesting games (both for this blog and for my chess streams) . It normally compares the move chosen with what the best move chosen by an engine, and then rates the move based on difference in evaluation. (As an aside, I at least learned the source of annoying questions I used to get asked on Quora about "average centi-pawn loss").
Unfortunately, based on my recent observations, is that it often does not correlate with playing strength. In some games one big mistake can wreck your score (as shown below), while in other cases, it has less of an effect. This is often the case when the game has a forcing nature, where the winning plan is quite obvious, and so both players walk a single path.
In the example game White was given a accuracy score of 10.8%, which I think is a little unfair. Sure he blundered into a mate in 2, but the moves before that weren't that terrible.


mattrad (1604) - beare840 (1517) [D00]
Live Chess Chess.com, 16.05.2020

1. e4 d5 2. d4 dxe4 3. Nc3 Nf6 4. f3 c6 5. fxe4 e5 6. d5 Bc5 7. Bg5 Qb6 8. Bxf6 Bf2+ 0-1

Things I can and cannot do

I definitely cannot play bullet chess. I think my current losing streak is 16 games in a row, including losing all my games in the first ACTCA Smash and Bash bullet event held on Lichess.
On the other hand, I did win a 2 day per move game on chess.com, and am tied for first in the tournament I am playing with. To put it into perspective, my rating at this form of chess is about 950 points higher than my billet rating!

Someone keeps sending me jazz tracks

As the title says, someone keeps sending me links to Jazz recordings on youtube, when applying to join the online ACTCA chess clubs. The problem is I cannot approve the application unless I know who it is. Smolborta, who are you?

How much wood on the fire?

Normally when assessing the soundness of a sacrifice, you are either looking for mate, or eventually winning back material. Sometimes there are occasions when you need to work out how much you are giving up for a more immediate return.
This was the decision I made when playing an online event this evening. While looking at 10.Ne5 I was aware of the sacrifice on f7, but when I reached move 12, it took me a while before deciding to take. What eventually convinced my was the capture on c7 at the end of the sequence, as I felt R+B+N was enough for Q+3P and an exposed king. Nonetheless, it wasn't until there was more tactics a few moves on, that the idea turned out to be a good one.
Slightly annoyingly, one minute into my second game my router decided to restart itself, and I both lost the game through disconnection, and was then booted from the tournament.


shaunpress (1898) - beare840 (1432) [B01]
Live Chess Chess.com, 13.05.2020

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Nf3 Nf6 5. Bc4 a6 6. d3 b5 7. Bb3 Bb7 8. O-O e6 9. Re1 h6 10. Ne5 Be7 11. Bf4 Qb6 12. Nxf7 Kxf7 13. Rxe6 Qxe6 14. Bxe6+ Kxe6 15. Bxc7 Re8 16. d4 Nbd7 17. Qe2+ Kf7 18. Be5 Bd6 19. f4 Bb4 20. Nxb5 axb5 21. Qxb5 Bd2 22. Qxb7 Be3+ 23. Kf1 Ng4 24. Qxd7+ 1-0

Huzzah!

I'm pleased to see that Lichess is now supporting swiss events that can be run for team members (NB chess.com has clubs, Lichess has teams). Although the bulk of the ACTCA online chess activity is happening on chess.com, I am also setting up a team on Lichess to test out tournaments there. If you are a Canberra player (present or former) sign up to the ACTCA Fast Chess Club and wait future announcements.

Ng5!

China has won the FIDE Online Nations Cup, not by beating the USA, but by winning one important game. The 4 board final between the two teams finished 2-2, but China went into the match with draw odds, having finished in first place during the preliminary rounds.
With two games drawn, the best performing Chinese player, Yangyi Yu launched a devastating sacrificial attack against Hikaru Nakamura. He sacrificed his knight on move 26, and by move 34 it was all over. As a result the Chinese team reached the 2 points required, and although Fabiano Caruana won the final game to finish for the US, first prize went to the Chinese.


Yu,Yangyi (2738) - So,Wesley (2741) [D38]
FIDE Chess.com Online Nations Cup (11.3), 10.05.2020

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 d5 5. Qb3 c5 6. dxc5 Na6 7. cxd5 Nxd5 8. c6 Qa5 9. Bd2 bxc6 10. g3 Nxc3 11. bxc3 Be7 12. Bg2 O-O 13. O-O e5 14. Qc2 Qc7 15. Qe4 f6 16. Qc4+ Kh8 17. Be3 Nb8 18. Rfd1 Ba6 19. Qe6 Bxe2 20. Rd2 Ba6 21. Nh4 Bc8 22. Qc4 f5 23. Nf3 h6 24. Rad1 Kh7 25. h4 Rf6 26. Ng5+ hxg5 27. hxg5 Rg6 28. Bd5 f4 29. Be4 Bxg5 30. Rd6 Bf6 31. Kg2 f3+ 32. Kxf3 Bg4+ 33. Kg2 Bxd1 34. Rxd1 1-0

No touch chess

It looks as though restrictions on small gatherings (up to 10 people) are going to be lifted. While this may sound good for chessplayers, there is still a limit on how close you can be together, and for how long. Sitting across from your opponent is probably still not allowed, but based on suggestions I have seen online, there may be a workable solution.
Each player has there own chess set, and sits at their own table. The tables are within sight of each other (eg 2 meteres apart) and the same game is played at each board. Moves are announced, and each player keeps their own time on their own clock.
The two main issues are noise, and keeping track of the time (as the clocks are likely to be out of sync). For the latter, the official time would be the the players own time on their clock, and as for the noise, it is a small price to pay for in person chess.

Online can be a challenge

I'm going to say that if this game was played on an actual chess board, it wouldn't have gone like this.


Anand, Viswanathan - Nepomniachtchi,Ian
FIDE Online Cup 07.05.2020

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Bd2 Bg7 6. e4 Nxc3 7. Bxc3 c5 8. d5 Bxc3+ 9. bxc3 Qd6 10. Qd2 O-O 11. f4 e6 12. Nf3 exd5 13. Bc4 Be6 14. O-O d4 15. f5 Bxc4 16. e5 Qd7 17. f6 1-0

A different kind of quarantine

Yesterday I read an interesting suggestion concerning online cheating, from GM Ruslan Ponomariov. Instead of trying to ban players who are using 'outside assistance', instead don't tell them they have been caught, and instead pair them against other players who have previously been flagged.
This way it becomes an engine v engine match, and rating points only circulate within that group.
While it is an inventive idea, it possibly falls down when players try and enter tournaments. If the tournament is large enough it may be possible to isolate such players, but a more practical solution is to generate some 'system error' that prevents them from entering.

The tyranny of time zones

The plus side of internet chess is that I am saving a heap of money on overseas travel. The downside is that most of the events I am interested in usually start between midnight and 6am local time. Based on my past experiences at playing online poker at 4am, my usual low skill level at online chess would sink even lower if I tried to start such events.
It is also making watching events difficult, especially the ones that start in the evening (in the UK and Europe). I had planned to watch some of the 4NCL Online last night, but buy the time I had walked the dog and grabbed a 7am coffee, it was pretty much finished. However I did get a tip off about one interesting game, which I attach below.


Rogers,Jonathan W (2333) - Adair,James R (2450) [A28]
4NCL Online Division 1 https://lichess.org/SadV7e3o (5.23), 05.05.2020

1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 Bb4 5. Nd5 e4 6. Nxb4 Nxb4 7. Nd4 c5 8. Nb5 d5 9. a3 Nd3+ 10. Bxd3 exd3 11. cxd5 Nxd5 12. O-O O-O 13. Qf3 f5 14. Nc3 Be6 15. Rb1 a5 16. Nxd5 Bxd5 17. Qf4 Ba2 18. Ra1 Bb3 19. a4 Qd7 20. Ra3 c4 21. Re1 Rac8 0-1

Two Bishops v Knight

While I'm not sure that this is a question that keeps people awake at night but, "can 2 Bishops win against a Knight", does get asked from time to time. In the first round of the FIDE Online Nations Cup, Fabiano Caruana shows that they can.


Caruana,Fabiano - Vidit,Santosh [C65]
Online Nations Cup Chess.com, 05.05.2020

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. Ba4 O-O 6. O-O d6 7. c3 Ne7 8. Re1 Ng6 9. Nbd2 c6 10. Nf1 d5 11. exd5 Nxd5 12. Ng3 Re8 13. h3 Bb6 14. Bc2 h6 15. Bd2 Bc7 16. d4 exd4 17. Rxe8+ Qxe8 18. Nxd4 Bd7 19. Qf3 Qe5 20. Re1 Qd6 21. Kf1 Ne5 22. Qe2 Re8 23. Ndf5 Qf8 24. Qh5 Bxf5 25. Nxf5 Ng6 26. Rxe8 Qxe8 27. g3 Nf6 28. Qf3 Qd8 29. Bc1 Qd5 30. Qxd5 Nxd5 31. Ke2 Kf8 32. h4 Ne5 33. Bb3 Ne7 34. Nxe7 Kxe7 35. h5 Nd7 36. Bd1 Nf6 37. Kd3 Bb6 38. f4 g6 39. hxg6 fxg6 40. Ke2 Nd5 41. Kf3 h5 42. Bd2 Kf6 43. c4 Ne7 44. Bc3+ Ke6 45. b4 Nf5 46. c5 Bc7 47. Bb3+ Ke7 48. Bc4 b6 49. a4 bxc5 50. bxc5 Ke8 51. a5 Bd8 52. Bd3 Be7 53. Bb4 Bf6 54. a6 Be7 55. g4 hxg4+ 56. Kxg4 Ne3+ 57. Kf3 Nd5 58. Bxg6+ Kf8 59. Ba3 Nc7 60. Bd3 Ne6 61. Bc4 Nxc5 62. Bc1 Nd7 63. Ke4 Bc5 64. Kf5 Ke7 65. Bb2 Be3 66. Be2 Nb6 67. Bf3 c5 68. Bf6+ Kf7 69. Bh5+ Kf8 70. Be5 c4 71. Ke4 Bc5 72. f5 Nd7 73. Bc3 Be7 74. Be2 Nc5+ 75. Ke5 Nxa6 76. Bxc4 Nc5 77. Bd2 Nd7+ 78. Ke6 Nc5+ 79. Kd5 Kg7 80. Be2 Kf6 81. Bg4 Nd7 82. Bc3+ Kg5 83. Bh3 Bf6 84. Bd2+ Kh4 85. Bf1 Bg5 86. Bb4 Nf6+ 87. Ke6 Ne4 88. Bd3 Ng3 89. f6 Bxf6 90. Kxf6 Kg4 91. Ke5 Kf3 92. Ba6 Ne2 93. Bd2 Ng3 94. Bg5 Ne4 95. Bb7 Kg4 96. Be3 Ng3 97. Bf2 a5 98. Bc6 a4 99. Bxa4 Kf3 100. Bd4 Kg4 101. Bd1+ Kg5 102. Be3+ Kg6 103. Bc2+ Kf7 104. Bd1 Kg6 105. Ke6 Nh5 106. Bc2+ Kg7 107. Ke7 Ng3 108. Bd3 Nh5 109. Bg5 Ng3 110. Ke6 Nh5 111. Kf5 Kf7 112. Bc4+ Kg7 113. Bh4 Kh6 114. Bf7 Ng7+ 115. Kg4 Kh7 116. Kg5 Kh8 117. Kg6 Ne6 118. Bf6+ Ng7 119. Bxg7# 1-0

There is (some) truth in numbers

Just as last month everyone was some sort of epidemiologist, this month, everyone (in the chess world) has become an expert at online cheating. At the moment I am seeing a tasty mix of  "why don't they ban obvious cheaters"/"why did they unfairly ban my friend" posts, which I am sure will continue for the next few months.
While I have my own strong opinions the topic, I'd rather share an amusing observation from one of the online tournaments I help organise.
One of the obvious metrics for suspicion (apart from the always popular "he was rated 400 points below me"), is how close a players move match the top engine choice. This is closely followed by "average centi-pawn loss" per move. And if a lowly rated player scores too high, then "there is something afoot at the Circle K". In a first round game (where top seeds meet lower rated players), both players scored on 90% on computer first moves. The winner (or was actually the higher rated opponent) made no errors at all, while the loser only made 1 mistake, and a single blunder. So while you may think that it would be difficult for both players to play an almost perfect 32 move game of chess, it is less surprising when you know that the one really bad move was to drop the queen on move 14! 
In fact one of the things I try and do after each tournament is look through game (including upsets), to see if I can find something for my tournament stream. And so far, while I have found a number of well played games, I have found no evidence that an engine was involved in any of them.

Updating my traps

Inspired by the FIDE Trainers course I sat in on last week, I've been updating some of my opening files. One such file is my collection of opening traps, which up until now has been based on my collection of Reinfeld and Pandolfini books dating back a number of years. While it is slow going I have found a few interesting games, including the following in what is usually an equalising line in the Danish Gambit.


Vospernik,Andrej (2150) - Ladanyi,Gyula (2037) [C21]
Budapest FS05 FM Budapest (2), 2002

1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Bc4 cxb2 5. Bxb2 d5 6. Bxd5 Nf6 7. Bxf7+ Kxf7 8. Qxd8 Bb4+ 9. Qd2 Bxd2+ 10. Nxd2 Re8 11. Ngf3 Nbd7 12. O-O b6? 13. e5 Nd5 14. e6+ 1-0

Bored games

Firstly, I apologise for opening with an atrocious pun. Having got that out of the way, I've noticed that it isn't just chess that is moving their activities online. I listened to an interview this morning about online Scrabble, and during the week had a long conversations with Dr Greg Ash, who organises Backgammon in the ACT about online events.
While chess probably leads the way in this regard, most boardgames can be played online, an in some cases are probably easier to do so (eg have you ever succeeded in finding exactly 7 players for Diplomacy?). The issues of fairplay and online behaviour also seem pretty similar, although there are still some games where AI hasn't taken over yet. Curiously, one feature of online backgammon, is met with suspicion by some players. Having the dice rolled by the server (as opposed to the players) seems like a no-brainer, but ever since I've played online Backgammon (over 20 years ago), every bad beat, missed hit, or poor roll is due to a dodgy RNG, rather than due to law of 'stuff happens'.
But this is the environment we are now playing in, and so if you still want to play the games you enjoy, you probably just have to accept that there will be things that don't always go your way.