09 September 2025

Knight over Bishop

I had this position this morning. I was White.

Black to move
41...Bd3??

It is clear that 41...Be2 would have prevented, or at least delayed my plans to remove Black's g-pawn, but 41...Ba2 also keeps the draw in hand. To wit, 42.Nf3 Kc4 43.Ne5+ Kb4 44.Nxg6 Kxa4 45.Ne5 Bg8 46.Kxf5 c4 and White will be forced to give up the knight for Black's last pawn.

42.Nf3+- c4 43.Ne5 Bc2 44.a5!

This move was necessary to the win.

44.Nxg6 Bxa4 45.Ne7+ Ke6 46.Nxf5=

Black to move
Analysis diagram
Black's only drawing move may not be so easy to find here. What would you play?

44...Kc5 45.Nxg6 Kb5 

White to move
46.Ne5

Stockfish favors 46.a6! The lines following are pure engine.

46...Bb3 47.g6 Kxa5 48.g7 c3 49.bxc3 Bg8 50.Kxf5 Kb5 51.Kf6 Kc5

White to move
52.c4

White wins more quickly with a simple technique: Ke7 or Nf7 with the idea of trapping the bishop. 52.Nf7 Kc4 53.Kg6 Kxc3 54.Nh6 Be6 55.Nf7 and the pawn promotes.

52...Kd4 53.Kf5

I appeared to be oblivious to the technique mentioned above.

53...Kc5 54.Ke4 Kd6 55.Kd4 Ke7

White to move
56.c5!

I found the only winning move.

56...Kf6 57.Nd7+ Kxg7 58.c6!

And again, only one move wins.

58...Be6 59.Ke5

59.Kc5 also wins

60.Nc5! Be2 61.c7 Bg4

White to move
62.Ne6+

Black's last few seconds of time ran out.

1-0





28 August 2025

National Grade Level Championships

A national youth event is coming to my city in December. Registration is open for the National K-12 Grade Chess Championships, which will be held 12-14 December 2025 at the Spokane Convention Center.

Website for the event: K-12 Championships.

12 August 2025

Errors Aplenty

Misplaying a Rook Ending


Why are rook endings difficult? The rook's move is arguably the simplest in chess, yet a rook ending where one side has an advantage of one pawn can prove vexing.

This ending arose in a game-10 Arena on chessdotcom. Both players had slightly more than three minutes remaining after 67 moves. I had Black.

White to move
68.Kf5?

Now, the position is equal. 68.Kd5 leads to a win.

68...Rh1

68...Rd1 also holds the draw.

69.Kg4 Rg1+ 70.Kf5 Rh1 71.Ke4

Black to move
71...Kf6?

71...Rf1 was the only move.

After the subsequent 72.Rf5+, Stockfish gives 72...Ke6 as equal, but an advantage of two pawns after 72...Ke7. However, experience analyzing many rook endings with Stockfish has taught me that anything under +4 should not be considered a decisive advantage. 72...Ke7 likely also hold the draw.

72.d5!+-

White is again winning. The next errors cam after thirteen more moves.

72...Ra1 73.Re6+ Kf7 74.Ke5 Re1+ 75.Kd6 Rf1 76.Re7+ Kf6 77.Re8 Kf7 78.Re7+ Kf6 79.Re4 Rc1 80.Kd7 Kf7 81.d6

Black to move
81...Rc5 82.Re7+ Kf8 83.Kd8 Rxh5 84.d7 Rc5

White to move
85.f5?

85.Re5 secures the full point

85...Rxf5?

Black puts White back in the driver's seat. Four possible moves along the c-file would have held the draw.
Despite Black's failure here, White did not find the right idea, although he came close.

86.Re8+ Kf7 87.Kc7 Rc5+ 88.Kd6 Rc1

White to move
89.Re7+

This move does throw away the win, but White nonetheless missed the right idea.

89.d8Q Rd1 90.Kc5 Rxd8 91.Rxd8 Kf6 92.Rd5 and Black's king cannot help the advance of his pawns.

89...Kf6

Three moves later, the game was drawn by repetition.






09 August 2025

Thematic Obsession

On Thursday at youth chess camp, I taught a short session on the minority attack and another on hanging pawns. On Friday, I tried to initiate a minority attack when the position did not call for it. Later in this game, my opponent had hanging pawns. By this point in the game, I already had a clear advantage.

The game was played in Arena at chessdotcom. 10 minutes.

Stripes,J. (1796) -- Internet Opponent (1968) [E08]
Live Chess Chess.com, 08.08.2025

1.d4 e6 2.Nf3 d5 3.c4 Nf6 4.g3 Be7 5.Bg2 0-0 6.0-0 c6 7.Qc2 Nbd7 8.Rd1 h6

A rare move

White to move
9.a3N

Perhaps I'm hoping to conduct a minority attack.

9.Nbd2 is natural and best  b6 10.e4 Bb7 11.e5 Nh7 12.cxd5 cxd5 13.h4  appeared in Nepomniachtchi,I (2779) -- Tabatabaei,M (2689) Julius Baer Play In Match Chess.com INT rapid 2023, which Black won in 93 moves.

9...Re8 10.cxd5?!

10.Nc3 dxc4 11.Ne5 Nxe5 12.dxe5 Nd7 13.Ne4

10...exd5 11.b4

Hastily initiating a minority attack that lacks support of pieces

11...Nb6 12.Nbd2

White will have difficulty getting the light-squared bishop into play.

12...Bf8 13.e3

13.Ne5 may be better

13...Bg4

White to move
14.Nb3

14.Re1 is better. White's opening cannot be deemed a success, as Black seems to be the one making threats.

14...Nc4 15.Nc5 b6 16.Nd3 Qc7 17.Re1 Nd6

White to move
18.Nfe5

The wrong knight. 18.Nde5 is equal.

18...Bd7

18...Bf5 pins the other knight.

19.Bb2=

White missed an opportunity to gain a pawn. 19.Nxd7 Qxd7 20.Ne5 Qe6 21.Qxc6 Rec8 22.Qa4.

19...Nde4?

This error helps White to gain the advantage. 19...Bf5

20.Rac1 Rac8 21.Nxd7 Qxd7 22.Ne5

22.f3 Nd6 23.e4 was better.

22...Qf5 

White to move
 23.Qe2

White missed an opportunity to take control.

23.f3!+- Nd6 24.Qxf5 Nxf5 25.Bh3 This pin is the key to the tactical sequence 25...g6 26.e4 Ne7 27.Bxc8 Rxc8 28.Re2

23...Ng5 24.h4 Ne6 25.Qf3?

25.Rxc6 Rxc6 26.Nxc6+-

25...Qxf3 26.Bxf3 Nd8

26...c5 27.dxc5 bxc5 28.b5 would keep some chances for equality.

White to move
27.b5!

Although the minority attack that I tried to force led only to handing Black equality or perhaps even a slight advantage, shackling my opponent with hanging pawns was a good decision. Even here, though, the routine 27.Rc2 was slightly stronger, according to the engine.

27...c5 28.dxc5 bxc5+-

Now Black has hanging pawns. These are not always a defect in the position, but here they present White with vulnerable targets without offering Black any dynamic counterplay.

White has superior minor pieces, as well as more space and mobility.

29.a4

It is not terrible to secure the majority, but there are much better opportunities on the board. For instance, 29.Nd3 Nb7 30.Bxf6 removes a defender, although giving up one of the "superior" minor pieces 30...gxf6 31.Bxd5 Na5 32.Bc4 Rcd8 33.Nf4

29...Bd6 30.Ng4

30.Nd3 

30... Nxg4 31.Bxg4 Rc7 32.Red1 Be5

White to move
33.Ba3! d4 34.exd4

34.Rxc5! Nb7 35.Rxc7 Bxc7 36.Rxd4+-

34...Bf6 35.dxc5 Nb7 36.c6


Black's position is resignable. See "Two Donner Quotes".

White to move
The game went on another 25 moves. I kept my advantage. 1-0


07 August 2025

Bishop vs. Knight

This week is Inland Chess Academy's annual August Youth Chess Camp and I'm teaching three sessions each of the three days.

My first session on Tuesday covered a few situations where a bishop or knight was a poor piece, such as a bishop's ineptitude when it does not control the promotion square of an a- or h-pawn. We also looked at some games where a good minor piece was able to dominate its rival.

The first position was from a game I played on Lichess seven years ago. 

White to move
White knew that Black's h-pawn had no future and quickly reached a textbook draw with 53.Nf7 Ke4 54.Nxd6+ Bxd6 55.Kg1 Kxd5 and there were thirty moves of shuffling as Black tried to run White's remaining 48 seconds down to zero. It was futile. Black had less time and White knew how to hold the draw. The game was drawn by repetition after move 86.

Another somewhat more difficult position comes from a game that I annotated in "Excelling at Technical Chess" 14 years ago, a game that is memorable both because I played reasonably well and because it was my revenge after I lost to my opponent in 20 moves a few months earlier.

White to move
I had plenty of time, but perhaps was rushing things because my opponent was short of time.

56.Be2 traps the knight and I should have won quickly. Instead, 

56.g4?? Nf3 57.Kf4 Nd4 58.Kg3 Ne6 59.Bf5 Ng7 60.Bc8

Black to move
My opponent erred in this position, returning the advantage I had squandered earlier. Twenty moves later, he resigned.

What would you play if you had Black here?





02 June 2025

Two Donner Quotes

On Friday, 16 May, someone shared on Facebook a quote by J. H. Donner concerning the difficulty of converting a winning position into a win. Donner's words were that he "cannot stand" such positions, while he "loves" all other types of chess positions, even "a bad position". The statement comes from an article, "On the Justice of Chess", that he wrote in 1950 and that was reprinted in The King: Chess Pieces (2006), 17-20.

The shared quote inspired me somewhat two days after I read it on Facebook. While going through a long and difficult game that I won, my opponent and I were examining a position that had occurred one-third of the way through the game. I was clearly worse. "You should have resigned," Mark said. My position was quite bleak. I was down an exchange plus pawn and my pieces had no play.

Black to move
Havrilla -- Stripes 2025

Perhaps it was about this time that I walked over to the wall charts to see Mark's rating. It was close to mine (ten points lower). We were both low-A Class. I've been A-Class long enough to know that anyone at such a level probably has defects in their game.

My position was clearly worse, but my opponent still had some work to perform. A resignable position in my view is one where I could turn the board around, take my opponent's side, and defeat Magnus Carlsen, or Stockfish, or Carlsen and Stockfish working together.

Donner's assertion, which I could no longer find where I'd remembered seeing it on Facebook, was made in the context of two games he played against Borislav Milic in a match between Yugoslavia and the Netherlands. Although Donner reached a clearly superior position in both games, he managed only half a point.

Black to move
Donner -- Milic 1950

In comments on the position above, he wrote, "Decent players resign in such a position. Black did not and managed a draw" (19).

Knowing that my opponent was quite strong, but not so strong that a few errors might led me swindle a draw from my nearly hopeless position, I opted to play on.

Twelve moves after the position that Mark and I were examining postgame when he thought that I should resign, I snatched an important pawn with 33…Nxa4.

White to move
Havrilla -- Stripes 2025

My game remained objectively worse, but at least my pieces had some play. While discussing the game afterwards with some others at the tournament, I described my knight as a fly buzzing in my opponent's face. I expressed some empathy for the difficulty of contending with such irritation.

The game continued, 34.Rc8 Bc5+ 35.Kg2 Rxc8 36.Bxc8 Nxc3 37.Rc1 Ne2 38.Rf1 b6

White to move
Havrilla -- Stripes 2025

I began to feel that a draw was a real possibility. After 39.Kf3 Nd4+ 40.Kg4 a4! I was certain that I could hold the game.

Neither of us played the best moves from this difficult position, but after another twenty moves, I was clearly winning. My opponent was also desperately short of time.

White to move
Havrilla -- Stripes 2025

Five moves later, my pawn was sitting a2, I had my queen near to hand, and my opponent's clock expired.

In Donner's first game with Milic, he spent an hour on this position.

Black to move
Milic -- Donner 1950

Stockfish 17 favors the move that he played, 22...Rg8, but he suggested several others as better, writing without the benefit of computer analysis in 1950. Nonetheless, his advantage began to slip away and the clock also had become an issue by the time Milic had a clear advantage.

This loss and the draw that followed led Donner to offer what became an inspirational quote for me after Mark's postgame comment.
I love all positions. Give me a difficult positional game, I'll play it. Give me a bad position, I'll defend it. Openings, endgames, complicated positions and dull, drawn positions, I love them all and will give them my best efforts. But totally winning positions I cannot stand. (19)
Later in the same paragraph is the statement that I used as an epigraph last week while annotating an ending where imperfect play on both sides gave me drawing chances that I missed, followed by my opponent missing his winning chances, and eventually the draw falling into my lap (see "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" (19).






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.