The Turton Theme Illustrated

See related Blog post HERE

[Event "White mates in 3"] [Site ""] [Date ""] [Round ""] [White "Problem by Otto Wurzburg"] [Black "British Chess Magazine 1896"] [Result ""] [Annotator ""] [SetUp "1"] [FEN "8/pk1B4/p7/2K1p3/8/8/4Q3/8 w - - 0 1"] [PlyCount "5"] [EventDate "2024.??.??"] 1. Bh3 {The object of this move is line clearance: after 2.Qg4 (the threat), the Queen has access to the mating squares c8 and d7. It is now mate in 2 no matter what black plays.} Kc7 2. Qg4 Kd8 3. Qd7# {This type of line clearance illustrates the Turton Theme. The Queen moved in the opposite direction from the line-clearing Bishop’s move.}

Why Engines Are Unbeatable

How Human-like is Komodo 14 Human?

    In a recent post on my chess Blog I mentioned that Komodo 14 has a personality called Human which is “designed to play more like a human Grandmaster on a high level or like an amateur taught by a Grandmaster on lower levels.” The Komodo site explains that as a result “it may well perform better against most humans than the default engine on the same level.” 

    At the time of THIS game, Boris Baczynskyj was rated 2264 (Master) and I would expect that the Weighted Error Value scores would be lower when annotating with Komodo 14 Human, meaning that the closer to zero the score, the closer the player’s moves match the engine’s. 

    Analysis with Komodo Human showed Baczynskyj’s Weighted Error Value was 0.73 while Reshevsky’s was a precise 0.26, meaning that Reshevsky’s moves very nearly match those of the engine. Baczynskyj’s Weighted Error Value was 0.76 which is actually quite good. 

    One would expect the Weighted Error Value to increase when analyzing with Stockfish 16.1 simply because it is a stronger engine and humans would be less likely to select the same moves as the engine. 

    Using Stockfish 16.1 saw Reshevsky’s WEV to go up just a bit to 0.36, but Baczynskyj’s improved a bit to 0.69. I can’t explain it. 

    In a short match pitting Stockfish 16.1 against Komodo Human with a time limit of 5 minutes per game, Stockfish won 3-0. 

    In annotating one of the games (below) using Stockfish, it’s WEV of its own play was nearly perfect which is no surprise. What is interesting is that Komodo Human’s WEV was 0.72 which is pretty close to Reshevsky’s in his game against Baczynskyj.

    I am not sure what to make of all this except to say that Komodo Human is clearly not close to Stockfish 16.1 in strength, but it appears that it does play at the Grandmaster level, but are the moves human-like? I can’t say. 

    To me this brings up the question, why pay for an engine when a stronger free program is available. Additionally, I do not see any benefit to the different Komodo personalities; they are, I think, sales hype. 

[Event "G5"] [Site "PC"] [Date "2024.??.??"] [Round "?"] [White "Komodo 14 Human"] [Black "Stockfish 16.1"] [Result "0-1"] [ECO "C54"] [Annotator "Stocjfish 16.1"] [PlyCount "80"] [EventDate "2024.??.??"] {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 a6 6. O-O d6 7. b4 Ba7 8. a4 O-O 9. Bg5 { [%mdl 32]} (9. Nbd2 Ne7 10. h3 c6 11. Re1 Ng6 12. d4 {is equal. Anand,V (2779) -Topalov,V (2740) Shamkir AZE 2019}) (9. Na3 h6 10. b5 Ne7 11. Be3 Ng6 12. Bxa7 Rxa7 13. a5 {Black is better. Tharushi,T (1581)-Crocker,P (2135) chess.com INT 2023}) 9... h6 10. Bh4 g5 {The position is equal.} 11. Bg3 Kg7 (11... Ne7 12. Nbd2 Ng6 13. Qc2 (13. d4 Nd7 14. Re1 Qf6 15. h3 exd4 16. cxd4 Bxd4 17. Nxd4 Qxd4 18. Rc1 Nde5 19. Bf1 Be6 20. Rb1 Rab8 {0-1 (20) Dvoirys,S (2595)-Kaidanov, G (2629) Moscow 2005}) 13... Kg7 14. h3 Nh5 15. Kh2 Nhf4 {Black is better. Jacimovic,S (1799)-Korban,K Herceg Novi 2008}) 12. Nbd2 Ne7 {[%mdl 32]} 13. d4 Nh5 14. dxe5 Nxg3 15. hxg3 dxe5 16. Nh2 {This is where white starts drifting into a bad position. 16.Nb3 keeps things nearly equal.} Ng8 17. Qe2 Nf6 18. Rfd1 Qe7 19. Nb3 Rh8 20. Nf3 a5 21. Nxa5 h5 22. Nxg5 $2 (22. Qd3 Ng4 23. Ra2 $19) 22... h4 $19 23. gxh4 (23. Nxf7 hxg3 24. Nxh8 Bg4 $18) 23... Rxh4 24. Rd3 Bg4 25. Nf3 Rh5 ({Weaker is} 25... Rah8 26. Nxh4 $1 Rxh4 27. Rg3 $16) 26. g3 Rah8 {[%mdl 32]} 27. Re1 Nh7 28. Kf1 Ng5 29. Nh4 Qf6 $1 30. b5 (30. Nb3 Rxh4) 30... Rxh4 31. gxh4 Rxh4 32. Rg3 Rh2 $1 33. b6 (33. f3 Nxf3 {[%eval -32751,44] [%wdl 0,0,1000] [%emt 0:00:02] Xxf3}) 33... Bxb6 34. f3 Nxf3 $1 35. Qxf3 (35. Rd1 Rf2+) 35... Rf2+ 36. Kg1 Rxf3+ 37. Kg2 Rxg3+ 38. Kxg3 (38. Kxg3 {[%eval -32761,245] [%wdl 0,0,1000] [%emt 0:00:00]}) 38... Qf4+ 39. Kg2 Qf2+ 40. Kh1 Bf3# {Weighted Error Value: White=0.72/Black=0.01 (flawless)} 0-1

Tartakower's Best Games

    Despite the glut of chess material that's available today and the use of computer chess programs, for me it’s still a delight to set up the pieces and pull out a book of somebody’s best games or a tournament book and play over the games.

    One collection, actually a two volume set, is the best games of Tartakower. You can’t buy them any more, but you can purchase My Best Games of Chess 1905-1954, the 21st century edition, in paperback on Amazon for $31.80 or the Kindle edition for $11.49. One caveat – the Kindle edition gobbles up a lot of space...45 mb. 

    Savielly Tartakower was a unique player and writer and you will love playing over all 2167games. But, if you don’t want to spend any money you can player over all the games or download them and make your own notes using a chess program at chessgames.com HERE.

What's the Best Chess Software?

`I received an e-mail the other day from a reader asking what chess program I recommended. The answer, I suppose, depends on what you want to use it for and how much you want to spend. I have several programs on my laptop: Chess Aquarium 2014, Ches Aquarium 2020, Chess Assistant 18, Fritz 12 and Fritz 17 and SCID vs. PC. 

    For my chess Blog I originally did all of my analysis using Fritz 12 and posted the games using various online sites, most of which are now defunct and so the games on the Blog posts are no longer visible..

    The next way to post games was to analyze with Fritz 12 and post them with Aquarium 2014. When I got Aquarium 2020 there were problems posting the games, so it was back to the 2014 version. 

    Then Fitz 17 came along and all the problems associated with analysis and publishing game on the Blog disappeared. Today Fritz 17 is all I ever use. Personally I think Fritz is more user friendly than Aquarium. Both have pleasing and customizable layouts. The latest version of Aquarium is 2024 and it can be download for around $50.00. 

    While the functions overlap, Fritz is basically a program you can play against and use for analysis. ChessBase is a database management program. 

    Both programs let you access a database in either ChessBase or PGN, format. The ChessBase format is designed to save a huge amount of game related data.

    When playing against Fritz you can adjust the level, it will give you hints and talk to you. You can also do a full analysis (including adding alternate opening lines with the game’s final results) plus you can add your own notes. 

    The current Fritz 19 comes in three versions. The Basic version has some specialized opponents: Attacker, coward, swindler and an endgame wizard. Cost: about $98. 

    Fritz with Fritz Powerboo which contains 25 millions opening positions. Cost: about $150 

    Fritz with Opening Encyclopedia which is more sophisticated and offers a number of other features. Cost: about $217. 

    ChessBase performs searches of games based on players, exact positions, tournaments or material. It also will create Opening trees of variations, tell you how successful particular lines have been and it will enable you to do training exercises. Unless you are a professional or just wants a top of the line program this one may be overkill. Cost: about $272 

    Chess Assistant 24 is a program for managing games and databases, playing on the Internet, analyzing games, or playing against the computer. To be honest, it’s my least favorite program and I have never used it. Also, I am not crazy about the appearance of the interface. 

    Chess Assistant includes several databases: the HugeBase with over 5 million games. a Guru database which includes games of top players and a Correspondence database of games between notable correspondence players. There is also an Openings database in particular is the Openings database. Chess Assistant 24 (download version) costs about $95, but at the time of writing it’ on sale for about $75. 

    For those looking for something free then Shane's Chess Information Database is unquestionably the best free program available. It can can create databases, run just about all engines and you can play against it or online.

 

Points in Pachman-Van Seters , Hulversum, 1947

https://www.chessgames.com/perl/chessgame?gid=1485712

10. Bxc4 Be7 

In this position it is worth noting the importance of white’s P on a3. It’s important because it prevents the maneuver ...Nb4-d5, blockading the d-Pawn. It also prepares the development of white’s Q to d3 which in conjunction with the moves Bg5, Rad1 and B-a2-b1 make the launching of a K-side attack possible. Nimzovich recommended the plan with the moves Qe2, Be3, Rfd1 and Rac1, but experience has shown it is of little promise. 

11. Re1 b6 

11... a6 is generally played but Pachman felt that the text move is more solid because after 12. Bg5 b5 13. Ba2 Bb7 the weakness of the square c5 would make itself felt after 14. Qd3 Nd5 15. Ne4 and now black’s best continuation is Nf6 (15... Bxg5 is less good because after} 16. Nexg5 g6 17. Rac1 Rc8 18. Rc5 {white is slightly better. 

13. Bg5 Rc8 

Pachman went so far as to give this move a ? stating that black has underestimated the danger that the aggressive posting of white’s pieces presents and black does not have time to develop his own pieces undisturbed. If that sounds harsh, even though Stockfish and Komodo evaluate the position as about equal, statistically after Szabo’s next move white scores a 49 percent winning advantage while losing on 16 percent! 

14. Rad1 Qc7 

Pachman also gave this move a ? stating that the continuation of the faulty plan started with his previous move could have been mitigated by seeking simplification with 14...Nd4 though even then white woud have the upper hand. 

16. h3 

Forestalling any complications that may arise from black playing ...Ng4. 16... Rd7 Black’s play is much too slow. His plan is to double Rs on the d-file pressuring white’s d-Pawn, but it’s much too slow and enables white to make a decisive breakthrough. 17. Bh4 Nh5 and even now the advance of the d-Pawn leaves white with a superior position. 

17. d5 

This is it...the classic lunge!

Fritz 17 Review For Posting Games On Blogger

     I have not done a review on this blog in a long time and last October I did a brief review of Fritz 17 on the chess blog. For years I was using Fritz 12 to do all my analysis and over the life of the blog several different programs were used to publish games. Thus when I got Fritz 17 with its ability to analyze and publish games it was pretty exciting. 

     I have read of several people complaining that the program has various glitches, but I have not found that to be the case. I use it on an old laptop with Windows 8.1 and on a newer laptop using Windows 10 and have never had a problem on either one of them. 

     The program comes with a ton of engines which I don't need because none of them are stronger than the free Stockfish 15. The only caveat with Stockfish is that its evaluations are about twice as high as those of other programs and the lower evaluations of programs like Komodo seem more appropriate. 

     I'm not interested in Fritz 17's 3D boards with ray tracing, playing online or its training features, just doing a full analysis and publishing. It turns out that Fritz 17's analysis returns a tremendous amount of information, some of which I could do without. 

     It inserts diagrams at what it considers to be appropriate places in the game. They are easily deleted by simply clicking on Text After Move and deleting the text that generates the diagram. 

     There are some other symbols and colored flags that appear at various points in the game. I have not bothered to find out their meaning, but there seems to be no way to delete them except by searching through the HTML code and deleting the code appearing in brackets that begins with a percent sign. But leaving them in the published games doesn't hurt anything, so the simplest thing to do is ignore them. 

    My initial problem with using Fritz 17 to publish games was the appearance...all the bells and whistles plus engine output appeared on the blog post, but it was much wider than my column so it bled into the column on the right hand side of my blog page. This was an easy fix...just change the column width when pasting the game into the blog. 

     There is another way to paste the game into the blog that automatically adjusts to the blog's column with, but all the bells and whistles are missing. Nevertheless, I like this layout the best. The only problem was finding documentation on how to do it. 

     It was not until I found this documentation that Fritz 17 became my program of choice for posting game in the blog. Here's how to do it:

 

* Click on Direct Share 

* Select Create a HTML File 

* Assign the game a name 

* In my case my default browser is Internet Explorer and it automatically opens and a pgn of the game appears. 

* At this point right click anywhere on the page and select View Source. A new window opens with the HTML. 

*Just copy and paste this into Blogger's HTML page. 

 

In Blogger the game will appear like this: 

 

   Once I discovered how to paste the games into my blog using this method I changed my opinion of Fritz 17 and I now use it for all analysis and publishing.

     Fritz 18 is out now and is available for download for about $90. I am not sure what's new, but I doubt that it's anything really worth while. If you can find Fritz 17 it should be cheaper. 

     The main point of this review is that I have found Fritz 17 to work well with my laptops and it is a excellent program for posting games in Blogger. It is also an excellent tool for analysis and I honestly do not know why some people have found it to have so many glitches.

Koltanowski-Keres Exhibition Correspondence Game

See related blog post.

[Event "Exhibition Correspondence Game"] [Site "?"] [Date "1963.??.??"] [Round "?"] [White "George Koltanowski"] [Black "Paul Keres"] [Result "*"] [ECO "D72"] [Annotator "Owner"] [PlyCount "82"] [EventDate "1963.??.??"] {Gruenfeld Defense} 1. d4 Nf6 {[%cal Bg8f6,Bf6d5,Bd5b4][%mdl 32]} 2. c4 g6 3. g3 Bg7 4. Bg2 d5 5. cxd5 Nxd5 6. e4 Nb4 7. d5 c6 8. Ne2 cxd5 9. a3 Qa5 (9... N4c6 10. exd5 Ne5 11. O-O O-O {Ilincic,Z (2540)-Ruck,R (2535) Hungary 2005}) 10. O-O d4 {[%mdl 8192] A poor move which white fails to take advantage of.} ( 10... dxe4 11. Bd2 N8a6 12. Qe1 Bg4 {Better than capturing the b-Pawn.} 13. Nf4 g5 14. Nc3 gxf4 15. axb4 Qxb4 {White is slightly bette. Ilincic,Z (2536) -Brinck Claussen,B (2359) Budapest 2006}) 11. Nxd4 {A surprisingly bad move.} ( 11. Bd2 N8c6 12. Nf4 O-O 13. Nd5 Bd7 14. Bxb4 Nxb4 15. Nxb4 {White has won a piece!}) 11... N4c6 12. Nxc6 Nxc6 13. Bd2 Qd8 {[%mdl 2048]} 14. Nc3 O-O { [%cal Oc8g4]} 15. Be3 Be6 {Somewhat better was 15...Bxc3} 16. f4 {Too risky. After this black should have been slightly better.} (16. Nd5 Bxb2 17. Rb1 Bxa3 18. Rxb7 Bd6 19. Qa1 {followed by 20.Rc1 with equal play.}) 16... Bc4 {Again, capturing on c3 was best.} 17. Rf2 {Better was trading Qs. Now black gets the upper hand.} Bxc3 18. bxc3 Qa5 19. e5 Rfd8 20. Qe1 Bd5 21. Bf1 Qa4 22. Rb2 b6 23. Bf2 Bb3 {Better was 23...Rac8} 24. Bg2 {White fails to take advantage of black's last move.} (24. Rab1 Bd5 25. Bb5 Qe4 26. Qxe4 Bxe4 27. Re1 {is equal.} ) 24... Rac8 25. Bxc6 Rxc6 26. Bd4 Bd5 {Keres misses the better 26...Be6} ( 26... Be6 27. Qe2 Bg4 28. Qf1 (28. Qxg4 Rxd4 29. cxd4 Qxd4+ 30. Rf2 Qxa1+ 31. Kg2 Qxa3 {wins}) 28... Rc7 29. Rd2 Qd7 30. Be3 Qc8 31. Rxd8+ Qxd8 {Black has the better ending.}) 27. Qd1 Qa6 {A nice maneuver switching the Q over to the K-side.} 28. Rd2 Qc8 29. Qf1 Rc4 30. h3 h5 31. f5 Qxf5 32. Qxf5 gxf5 33. Kf2 Bb7 34. Rb2 e6 {Even better was 34...Ra4} 35. Rb4 Rdxd4 {Fancy, but the prosaic 36...Ba6 was equally good.} 36. cxd4 {[%mdl 4096]} Rc2+ 37. Ke3 Rc3+ 38. Kf4 Kg7 $1 39. Kg5 Rxg3+ 40. Kxh5 Rxh3+ 41. Kg5 Rg3+ {The game ended here, being adjudicated by Keres as a win for himself! Although Koltanowski agreed with the decision, he felt that his position merited playing on. It would seem that Koltanowski was correct because in Shootouts using Stockfish 14.1 white scored +0 -1 =4.} *

Solution to Purdy Problem

For the discussion of this position see HERE.

[Event "Black to move"] [Site "Chess World magazine"] [Date "1953"] [Round "?"] [White "?"] [Black "?"] [Result "0-1"] [SetUp "1"] [FEN "r3kbnr/pppn1ppp/3p1qb1/8/2B2B2/1NP1P1Q1/PP1N1PPP/2KRR3 b kq - 0 1"] [PlyCount "5"] 1... d5 {This assures that white can't carry out his threat to win the Q because of Boden's Mate. It's also the only move black has that does not lead to an inferior position. It's also interesting that in the initial position Stockfish says black is better by about a P and a half.} 2. Bg5 (2. Nd4 { This is the best. Even though white loses the B his position is not totally without counterplay, but in the end, his lead in development and space is not sufficient compensation.} dxc4 3. Nb5 Rc8 4. e4 Bc5 5. Bxc7 (5. Nxc7+ Rxc7 6. Bxc7 Bxf2 7. e5 Qf5 8. Ne4 Bxg3 9. Nd6+ {black is winning after} Kf8 10. Nxf5 Bxe1 11. Bd6+ Ke8 12. Nxg7+ Kd8 13. Rxe1 {Black still has an extra piece.}) 5... Ne7 6. Nf3 O-O 7. Rxd7 Qc6 8. Rxe7 Bxe7 9. Nfd4 Qd7 10. Bd6 Rfd8 11. Bxe7 Qxe7 {Black is up the exchange.}) 2... Qxc3+ 3. bxc3 Ba3# 0-1

Answer to temperature question

Answer to temperature question asked HERE... 

If it is 0 degrees F. and it's twice as cold tomorrow the temperature will be -32 degrees F. 

Zero degrees Fahrenheit converts to -17.78 degrees Celsius. Doubling 17.78 gives -35.56 Celcius which converts to -32 degrees F.

Nisch vs Woog Finish

Nisch - Woog

Result: 1-0

Site: Leipzig

Date: 1934

[...] 1.♗xf6 This move wins easily. Going after the P on d3 would be a mistake. (1.♖xd3 bxa4 2.♖d4 ♗c6 and black has full equality.) 1...♗xf6 (1...gxf6 also loses after 2.♕h6 ♗f8 3.♕xf6 ♗g7 4.♕xf7+ ♔h8) 2.♖xf6 If white does not find this move black would stand better! This move accomplishes two purposes: it removes a defender and it breaches the K's wall of Ps.

2.♖xd3 bxa4 black's piece activity assures him of an advantage. 3.♖xd6 ♕c5 4.♖d1 ♖ab8

2...gxf6 Black is now completely lost. 3.♕h6 There is no satisfactory way to meet the threat of Nh5. 3...♖c5 After this black can meet 4.Nh5 with 4...Rxh5! after which it's black who would be winning. 4.♗d5 this brilliant move blocks the R and there is no defense against Nh5. White has a mate in 5. (4.♗d5 ♖xc3 5.♘h5 ♕xf2+ 6.♔xf2 ♖c2+ 7.♔f3 ♖f2+ 8.♔xf2 exd5 9.♕g7#)

4.♘h5 ♖xh5 5.♕xh5 bxa4 6.♕f3 ♗c6 7.♖b1 (7.♕xd3 ♕xb2 Black is winning.) 7...♕b7 8.♕xf6 ♗xe4 with a won ending.

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Solution to the Cook Problem

Original Blog post

White mates in 3

Result: 1-0

Site: 

Date: 2020.12.05

[...] 1.e8=♗ White can win in any number of ways, but this is the quickest mate. (1.e8=♕ Stalemate!) 1...♔e6 2.f8=♗ ♔f5 3.♗d7#

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Solutions to the Sherlock Holmes Problem

Note that in the problem the board is oriented wrong. If you flip it around so that there is a white square on the lower right the solution is obvious: 

Flip the board 180 degrees and again, the solution is obvious. 

FIDE Anti-Cheating Details

Obviously this is a joke. I modified it from an old post I saw on McCready and Chess.

Answer to Dwarf Riddle

The seventh dwarf is also playing chess...it's a two player game.

Return to Tartajubow On Chess

Shootout Analysis Romanovsky-A. Rabinovich

Return game

Play Online Chess

[Event "Shootout from analysis position"]
[Site "?"]
[Date "1920.??.??"]
[Round "?"]
[White "Romanovsky "]
[Black "Rabinovich "]
[Result "*"]
[WhiteELO "?"]
[BlackELO "?"]
[SetUp "1"]
[FEN "r3k2r/ppp3pp/1q2p3/2N1n1B1/8/1P6/P1P2PPP/R3Q1K1 w KQkq - 0 16"]

%Created by Caissa's Web PGN Editor
16. Qxe5 O-O 17. Be3 Rf5 18. Qxe6+ Qxe6 19. Nxe6 Re8 20. Nf4 a5 21. a4 Rd8
22. Nd3 Rfd5 23. g4 R5d6 24. Kg2 Rb8 25. Nb2 b5 26. axb5 Rxb5 27. f4 Ra6 28.
Kf3 Rc6 29. Nc4 Rh6 30. Kg3 Ra6 31. Ra4 Kf8 32. Bd2 Ke8 33. Bxa5 g6 34. Kf3
Ra8 35. Ke4 Rb7 36. Ra1 Ra6 37. Re1 Ke7 38. Bc3 Kf7 39. Rd1 Re6+ 40. Kf3 Ke8
41. Be5 Ra7 42. f5 gxf5 43. gxf5 Re7 44. Bf6 Rd7 45. Re1+ Kf8 46. Re6 Ra2 47.
Ne5 Rd5 48. Ke4 Rd2 49. Be7+ Kg8 50. f6 Re2+ 51. Kd3 Rf2 52. Bc5 Rxf6 53.
Rxf6 *

Solution to Lt. Col. George Kirkpatrick Ansell Problem

Stumped by Sam Loyd

White to Mate in two moves:

White can only mate on two squares e7 and h8, but if 1.Qa3 black has 1...c5 or 2...O-O-O. If 1.Qa1 then 1...O-O-O. At least that's what I thought, but after 1.Qa1 black can't castle because he made the last move and it must have been with either the King or Rook, so castling is not legal.

Play Live Blitz at ChessBase

Solution to Retrograde Problem

Black to move

1... Bxd5+

This only draws, but that is not the task. After  1... Rxd5 2.Kxb4 Rd4+ 3.c4+ Kd2 4.Ka5 Bxc4 white has a B vs. R and B and will lose in 15 moves at most.

2. c4 bxc3+ 

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