28 May 2025

Comedy of Errors

It is much better, in fact, to play an objectively less correct game but to be able to win once you've got a winning position.
J.H. Donner, "On the Justice of Chess" (1950), rpt. The King: Chess Pieces (2006), 19.

White to move

White clearly has a winning advantage. After ten moves, the advantage is still there.

White to move

White struggled to find the correct plan to bring home the full point. The correct idea is to march the king to a7 in order to activate the rook. See a discussion of this idea in "Knowledge".

52.f4??=

52.Kg2 Ra2+ 53.Kf1 Kg6 54.Ke1+-

52...Ra2 53.Ra7 Kh6??

Black also seems to be confused about the demands of the position.

53...Kg6 was necessary.

54.f5+- Ra3 55.Ra8 Kh7 56.Ra7 Kh6 57.Ra8 Kh7 

White to move
58.a7??=

This move clarifies matters for Black. Moreover, the correct plan mentioned above is no longer an option. White's only hope is that Black will err.

58...Ra2 59.g4 Ra3+ 60.Kg2

Black to move
60...hxg4??

60...Ra2+ holds. White's king cannot both find refuge from checks and prevent Black from getting a passed pawn that becomes a queening threat. But, Black's haste to get a passed pawn here was a critical error.

To Black's credit, he now knew that his position was lost and what White should do to win. After nine more moves, the critical moment arrived.

White to move
70.f6??=

70.h6 would win. The f-pawn will deflect either the rook from it's critical spot behind the pawn, or the king from security against a skewer.

Although the draw is now assured, the game continued for another 20 moves. I was Black and played this game this morning online at ten minutes for the game.

19 May 2025

The Sidebar

Chess Skills was started in 2007. At the time, most readers accessed the content on a regular computer. Now, more and more use mobile devices, which often deprives them of access to the sidebar. It contains much that is useful: a link to my self-published books, links to posts that are receiving traffic, an archive list, an index of topics, and links to other sites.

Particularly useful for some of my regular visitors are the links concerning scholastic chess in Washington state where I coach and work as an event organizer.

There is also a contact form for those who would like to email a personal communication to me.


Alas, many of the links, especially to blogs, are no longer active. This morning, I'm spending some time eliminating dead links and adding a few new ones. I'm keeping a few blogs on the list that are no longer active because they offer good content.

18 May 2025

Seek the Truth

Many years ago I was going through a game played by two others at the Spokane Chess Club with the one who lost the game. We were looking for improvements in his play when his opponent stopped by, stating, "but, this is what happened in the game." That player who won that game never got his rating substantially above where it was then. The other player continued to improve. Both of them have far better records against me than anyone else rated 500 points lower, but that's another story.

Yesterday, at the Inland Empire Open, my second round opponent resigned at move 22. In the post game analysis, our task was to find his errors and improve upon them rather than celebrate my performance. Analyzing with Steve and other opponents is also one of the central pleasures of weekend chess tournaments.

In 2006, Steve and I tied for first in the Reserve (u1700) section of the Washington Challenger's Cup. It was my first significant success in a weekend Swiss (see "My Chess Journey"). Our game in that event had one of the longest chess moves ever played in one of my games--his 37 minutes and my 23 minutes. The last time we played, two years ago, the game was even until he made an endgame error (see "Bishop vs. Knight").

Stripes,James (1831) -- Brendemihl,Steve (1557) [A80]
Inland Empire Open Spokane (2), 17.05.2025

1.d4 f5 2.Nc3 Nf6 3.Bg5 e6 4.e4 h6?!

4...fxe4 5.Nxe4 Be7 6.Bxf6 Bxf6 is the normal continuation.

White to move

5.Bxf6 Qxf6 6.Nf3

6.exf5 appears in several games.
6.e5 Qf7 7.h4 d6 8.Nf3 Nc6 9.Bb5 Bd7 10.Qe2 0-0-0 11.0-0-0 and White won after a long struggle 1-0 Melkumyan,H (2640) -- Kamsky,G (2623) Titled Tuesday intern op 27th Feb Late Chess.com INT blitz 2024.

6...Bb4 7.exf5 Bxc3+

7...0-0 was worth considering 8.fxe6 Bxc3+ 9.bxc3 d6 White is slightly better.

8.bxc3

Black to move

8...exf5N

I expected 8...Qxf5, which my database shows me was played in a short draw in 2015.

8...0-0 is probably best 9.fxe6 Qxe6+ 10.Qe2 Qf7 11.Ne5 Qf6 12.Qf3 (White should have played 12.Qc4+ d5 13.Qxd5+ Be6 14.Qxe6+ Qxe6 15.Bc4) 12...d6 13.Bc4+ Be6 14.Qxf6 Rxf6 15.d5 Bf5 16.Nd3 Nd7 and Black won in 76 moves 0-1 Naegeli,O -- Diemer,E SUI-ch 57th Thun 1956.

9.Bc4 d6 10.0-0

White has a comfortable game

10...Nc6

10...Kf8 is a computer recommendation. 11.Re1 g5 12.Re3 f4 13.Re2

11.Re1+ Ne7

11...Kf8

12.Qe2

12.Qd3 might be better 12...g5 13.Re2 Rh7 (13...g4 14.Rae1 gxf3 15.Rxe7+ Qxe7 16.Rxe7+ Kxe7 17.Qe3+ Kd8 18.Qxf3+-) 14.h3 g4 15.hxg4 Rg7 16.Rae1 and White is slightly better.

12...Kd8

12...g5 and I might have played 13.d5 to open d4 for my knight.

White to move

13.Rad1!+/=

A move that the computer likes better after seeing it played.

13...Re8 14.Ne5

Hope chess: take my knight, please. 14.Bb3 is probably better.

14...d5

14...c6 15.Bf7 (15.Nf7+? Kc7) 15...Rf8 16.Bh5 Kc7 and Stockfish wants to sacrifice the knight
14...-- I had this fantasy 15.Nf7+ Kd7 16.Be6+ Kc6 17.Qc4+ Kb6 18.Rb1+ Ka5 19.Qb5#

15.Bb3

Before placing my knight on e5, I thought I could play 15.Bxd5 Nxd5 16.Nc6+ but after my opponent's move. I saw that 16...Qxc6 protects the rook.

Black to move

15...c6

It was difficult to find an improvement for Black at this point in the game. White's advantage is clear and the moves come easy.

15...a5 16.a3

16.c4+- Be6

16...dxc4 17.Bxc4 Kc7 18.d5+-

17.cxd5 Nxd5 18.Qd2

I almost played 18.c4?? Nc3 19.Qd2 Nxd1 20.Bxd1 and White may have compensation for the material wantonly thrown away.

18.Bxd5 Bxd5 19.c4 Bf7 20.d5+-

18...Kc7 19.c4

Black to move

19...Ne7

We looked at 19...Nb6 20.Qa5 Kc8 21.c5 Bxb3 22.axb3 Nd5 and White does not seem to have much of an attack, even though Black's positional difficulties remain.

20.d5 Red8

20...Rad8 21.Qa5+ Kb8 22.dxe6+-
20...cxd5 21.cxd5 Bxd5 22.Bxd5 Rad8 23.Qc1+ Kb8 24.Bf7+-

21.d6+ Kb8

We looked at 21...Kc8 22.dxe7 Qxe7 23.Qxd8+ (23.Ng6 is better) 23...Qxd8 24.Rxd8+ Kxd8 25.Nxc6+ White is a piece to the good.

White to move

22.dxe7!

It's nice to be able to play such a move. Black resigned.

22.dxe7 Rxd2 (22...Re8 23.Qd6+ Kc8 24.Nxc6; 22...Qxe7 23.Qxd8+ Qxd8 24.Rxd8+ Bc8 25.c5) 23.e8Q+ Kc7 (23...Rd8 24.Rxd8+ Kc7 25.Rxa8) 24.Qxa8
1-0

16 May 2025

Two Endings from Informant

Yesterday, I put one of my stronger students through five endings from Chess Informant 163. They proved challenging. This morning, I had three candidate moves for number six. I rejected the move played in the game, but chose the wrong one of the other two.

White to move and win
From Putnam,L.--Kaliksteyn,A., New York 2025

After some discussion concerning efforts that did not work, I found how Anton Korobov drew against Bogdan Deac.

Black to move

 How would you play these two endings?

15 May 2025

Some Problems in the French

This position has arisen perhaps a dozen times in master play.

Black to move
The most recent instance of this position was in Lu,M.--Svane,F., Wijk aan Zee 2025. Svane played 10...dxc4. In ChessBase Mega 2024, Black has played this move seven times, limiting White's score to 42.9%.

10...c6 is more common and was suggested as better by Milos Perunovic in Chess Informant 163/104.

10...Bf4 appears four times in CB Mega, including in a blitz game, Topalov,V.--Nepomniachtchi,I., Zagreb 2022, which was drawn in 70 moves. In none of these games did White play 11.cxd5, which Stockfish 17 recommends.

This position appears in 35 games in ChessBase Mega 2024.

Black to move
The most popular replies have been:

a) 10...Bd7
b) 10...Qb6
c) 10...O-O

Black has not done well with Stockfish's top choice.

This position occurs with some frequency.

Black to move
Black has two ways to capture the pawn on c5, or the capture can be postponed. What are the merits of each of the main options?

a) 9...Bxc5
b) 9...Nxc5
c) 9...Qa5

Bonus Positions


What would you play?

Black to move
From Gukesh,D.--Harikrishna,P., Wijk aan Zee 2025, CI 163/105

Black to move
From Tabatabaei,M.--Mamedyarov,S., Deutschland 2025, CI 163/108



14 May 2025

Tough Choices

Reading is central to my life. Last night, I finished John Steinbeck, Tortilla Flat (1935) and placed an order for In Dubious Battle (1936). I am working through all of Steinbeck's books in order of publication. Herman Melville, The Confidence-Man: His Masquerade (1857), which I started appropriately on 1 April, is slower going.

I also read chess books and usually more than one at a time. I bought the first edition of Dvoretsky's Endgame Manual (2003) within a year of its first publication and later acquired the second edition on my Kindle app, a second copy of the first edition in Chessbase format, and the fifth edition. Dvoretsky's book has served as an indispensable endgame resource and frequently the first of my many endgame books that I open when I want to understand something. As I wrote in late-April, the chapter on rook endings is part of my regular work at present (see "Working through Dvoretsky").

After racing through 300 Most Important Chess Positions (2018) in 74 days from December to March, the sequel, 300 Most Important Tactical Chess Positions (2020) has on a table in the living room, on my desk, or in a chess bag as I am beginning a slower process of working through it.

Some newer books are offering me tough choices or distractions from focus.

Think Like a Super-GM (2022) by Michael Adams and Philip Hurtado joined my chess book collection on 1 May. I took it with me on a trip that weekend (see "Think Like a Super-GM"). When I returned home, I set up the second position on the dining room table, looked at it some with neither a note pad nor discipline and focus. I had to remove it from the table in preparation for hosting a family get together on Mother's Day.

I remain a subscriber and occasional reader of Chess Informant, which now serves class players as well as it served masters in the days before ready access to recent games that came with the internet. I referenced an opening article from CI 162 in "When preparation meets opportunity", showing a game where I beat a player gambling with the Budapest.

At Spring Break Chess Camp, Jim Maki was using a lot of challenging checkmate problems with the young players. In a conversation about sources for such exercises after one of the sessions, I immediately remembered Anthology of Chess Problems, 2nd ed. (2021), a reissue of the anthology published in the 1990s by Milan Velimirovic and Marjan Kovacevic. I took it to camp the next day to show Maki, and brought it again to the youth tournament that Saturday when Maki and I were working the analysis table. It was with me during chess lessons with young players the following week. The mate in twos that begin the book are challenging enough to keep me busy far longer than I am likely to invest in the effort.

Two days ago, another book arrived that I bought not only because the topic is interesting, but also because I really liked the cover art by Kallia Kleisarchaki.

Cyrus Lakdawala takes on the task of ranking chess players past and present in The Greatest (2025). No one will agree with his rankings, of course, because the topic remains more interesting so long as chess enthusiasts enjoy arguing with any and every list ever constructed.

Naturally, I immediately found fault with his chronology that begins with Philidor. Giulio Cesare Polerio's innovations and Gioachino Greco's improvements on those innovations remain underappreciated in chess history. Nonetheless, I find no fault either with his top four, nor with the sequence he offers. I also find his defense of the arrangement logical and compelling. Numbers five and six were the focus of Chess Skills for two months in 2021. 

After his "Classical Era Top Tier List", Lakdawala lists twenty criteria that informed his list. The Greatest will be earning more of my attention in the coming days and weeks and I work through at least some of the 80 games that Lakdawala selected to develop the theme of chess greatness.

From time to time, I am still also working through P.H. Clarke, 100 Soviet Chess Miniatures (1963). It might be how I take my coffee in the morning if not for always playing at least two words games with my wife on our iPads--Scrabble and Words with Friends.

12 May 2025

Masters Err Too

After some dubious choices in the late opening and early middle game, I was being punished. White has a decisive advantage and is preparing the knockout blow. It was a ten minute game and we both had plenty of time remaining.

White to move

FM Roar Elseth -- Stripes,J [C03]
Live Chess Chess.com, 09.05.2025

33.Rg8+

Good enough, but not best.

33.Ba7+! Ka8  34.Qxe4 Rxe4 35.Bb6 Rc4 36.Rg7 Be8+-
33.Qxe4 dxe4 34.Bb6 Rc6 35.Rg7!+-

33...Rc8 34.Ba7+

34.Qxe4 dxe4 35.Rg7 Be8 36.Bb6 h4+-

34...Ka8+- 35.Rxc8+?

From a decisive advantage to slightly better. This error solves some of Black's problems.

35.Rg7 Qxe3 36.Bxe3 Be8 37.Kg3+-

35...Bxc8+/-

White to move

36.Qc5?

Did my opponent overlook the check or underestimate it?

Better was 36.Bd4 Kb8 37.Qxe4 could lead to an interesting position (37.Qc3 offers winning chances). 37...dxe4 38.Kg3 Kc7 39.Kh4 Bd7 40.Kxh5 Bb5 41.Be3 Be2+ 42.Kg5 Bf3 43.h4

Black to move
Analysis diagram

43... Bg2 44.h5 Bh3=

36...Qxe5+= 37.Kh1 Qe4+ 38.Kg1 Qg6+ 39.Kh2 Qxf6 40.Bb6

White threatens checkmate.

Black to move

40...Qf4+ 41.Kg1 Bd7 42.Bc7

White used 40 seconds on this move, which renews a mate threat.

42...Qg5+ 43.Kf1 

If there is a refuge from checks, it may be in the center.

43...Bb5+ 44.Ke1 Qg1+ 45.Kd2 Qg5+

White to move

46.Ke1

Another 40 seconds were used here by my opponent.

46.f4 does not escape from my relentless queen. 46...Qg2+ 47.Kc1 Qf1+ 48.Kb2 Qe2+ 49.Kb3 Qc4+ forces the queens off the board.

46...Qg1+ 47.Kd2 Qg5+ 48.Ke1 Game drawn by repetition ½-½

I should have lost, but my opponent fell short and gave me a chance to force a draw.

03 May 2025

Think Like a Super-GM

I watched an excessively long video on YouTube concerning the best puzzle books. Nonetheless, the long discussion was often interesting. Most of the books highlighted are useful for masters, but less likely to benefit lower rated players. But there were some, such as the Polgar brick, that also earned accolades.

One of the top choices has proven difficult for strong players, but has improved their game. It reminded me of Jeremy Silman, The Amateur’s Mind because the thoughts of players at different levels were recorded, presented, and evaluated.

That book is Michael Adams, and Philip Hurtado, Think Like a Super-GM (2022). I ordered it Thursday morning, it arrived Thursday evening, and I took it with me on a weekend trip to Montana. I did the first exercise while eating breakfast.


I found the key move, but my analysis needs to go deeper to reach a correct evaluation.