Showing posts with label Pawn Endgames. Show all posts
Showing posts with label Pawn Endgames. Show all posts

Sunday, 2 November 2025

The Fahrni-Alapin Position

Who discovered first this famous position with a stunning winning manoeuvre? Fahrni and Alapin? Em. Lasker? Kling and Horwitz? Chapais? I have a new answer to this question!

White wins even on the move!

Fahrni, in his book Das Endspiel im Schach (Leipzig, 1917), gave this as a position from a game Fahrni-Alapin without giving more details. In the later chess literature, the game was sometimes referred to as Fahrni-Alapin (1912), but no game score ever surfaced.

In 1905, a game between Paul Fiebig and Savielly Tartakower reached this position after black's 54th move:

The game continued with the moves

55. a5 bxa5 56. bxa5 Kd7 57. c5 Kc7 58. c6 Kc8

In this winning position, a disappointing draw followed...

59. Kd6 Kd8 60. Kd5 Kc8 1/2-1/2

Emanuel Lasker gave some lectures in London in 1895, and a book based on those lectures was later published by him: Common Sense in Chess (London-Berlin, 1896). The position from page 108 is familiar:

He gives the following analysis: "White has two chances of winning, the one based on his passed Pawn, the other on the weakness of the black RP. The black K occupies at present a position of advantage in regard to both. This is changed by the following manœuvre:"

1. Kd5 Kc8 2. Kc4 Kd8 3. Kd4 Kc8 4. Kd5 Kc7 5. Kc5

The famous book by Joseph Kling and Bernhard Horwitz, Chess studies or Endings of Games (London, 1851) already contained a similar position:

They gave the following solution:

1. Ke5 Kd8 2. Kd4 Kc8/Ke8) 3. Ke4 Kd8 4. Ke5 Kd7 5. Kd5 and wins. "White, by the mode of play adopted, gains either the opposition and wins with the Queen's Pawn, or else gains the Black Pawn, and then wins easily."

Actually, White doesn't need this fancy manoeuvre to win in this position, in the 1884 edition of the book, "another useful solution" is given:

1. Ke5 Kd8 2. d7 Kxd7 2... Kc7 3. d8=Q+ +- 3. Kd5 Kc7 4. Ke6 Kc8 5. Kd6 Kb7 6. Kd7 Kb8 7. Kc6 Ka7 8. Kc7 Ka8 9. Kxb6 and wins.

By the way, this solution with a pawn sacrifice wouldn't work in our original position.

Only 10 pages later, the same book contains another study featuring our position.

The solution given by the authors is quite surprising... and wrong.

1. a5 bxa5 2. Kc1 a4 3. Kd1 Kd4 4. Kc2 Kc4 5. a3 "and draws".

1. a5? is actually a blunder; the right drawing move was 1. Kc1.
3... Kd4? is another mistake; 3... c2 wins.
The biggest blunder, though, is the "and draws" part. After white's 5th move, we have the "Fahrni-Alapin Position" on the board, only with reversed colours!

This position is a win, not a draw, and the winning method was given by the authors in their previous composition 10 pages earlier... Of course, Kling and Horwitz were geniuses, but pawn endgames can be so tricky sometimes.

Our time travel doesn't end here. Von der Lasa, in 1862, published the first position from an old French manuscript by "Chapais" (probably a pseudonym). This truly remarkable manuscript of an endgame book Essais Analytiques sur les Echecs was probably completed in 1777 by the mathematician Gaspard Monge. Last year, Herbert Bastian published the book Chapais – Das revolutionäre Schachmanuskript von Gaspard Monge (Berlin, 2024), presenting the whole content of the MS.

One remarkable discovery is that "our position" was already in the Chapais MS! Here's the analysis from the manuscript:

White wins whoever is on move

1. Kd5 Kc8 If 1... Kd8 or 1...Kb8 then the white king goes to d6 already on the second move. 2. Kd4 If 2. Kd6 then 2... Kd8, and the checkmate will be delayed. 2... Kd8 If black returns 2... Kc7, white immediately gets the zugzwang by 3. Kc5, and from there, it penetrates through b6 and wins more quickly; 2... Kb8 is answered by the same 3. Kc4 3. Kc4 Kc8 4. Kd5 Kd8 5. Kd6 Kc8 6. c7 This is the moment when White must advance the pawn. The pawn must reach the penultimate rank without a check to avoid a draw or a stalemate. It can be observed that White's preceding king march was steered towards this goal. 6... Kb7 7. Kd7 Ka7 8. Kd8 Kb7 9. c8=Q+

Our journey is not over yet! Today, I have discovered an even earlier source for this endgame.

Giambattista Lolli, in his book Osservazioni teorico-pratiche sopra il giuoco degli scacchi (Bologna, 1763) pp. 489-499, has a lengthy analysis of the following position:

He concludes that White wins whoever is on move. White has two winning methods.

The first is a nice breakthrough: 1. Kd5 Kd7 2. f6! gxf6 3. g6! hxg6 4. h6! +-
The second method starts with the pawn push 1. g6.

He is also analyzing the two other possible pawn pushes, which lead only to a draw: 1. h6? and 1. f6?.

1. h6? is easy to prove to be a draw, but for 1. f6? "it is necessary to act with great circumspection, as one must sometimes handle the King contrary to the rules suggested for King against King and Pawn, because here both Kings have an extra Rook's Pawn that they can move..."

After the moves 1. f6+? gxf6+ 2. gxf6+ Kf7 3. Kf5, he reaches the following position:

Now, black has to be very careful. The natural retreat 3... Kf8? loses after 4. Ke6 Ke8 5. f7+! Kf8 6. Kf6, and there is no stalemate. One must choose 3... Ke8! (or 3... Kg8!) to draw. Then 4. Ke6 Kf8 5. f7 h6 6. Kf6 is a stalemate.

He also proves that 3... h6?, which leads to a mirrored Fahrni-Alapin Position, loses.

His main line is 4. Ke5 Kf8 The black King "goes to f8 to opportunely face the opponent's King if he comes to e6, but White disappoints him with a subtle move like this:" 5. Kf4! Kg8 6. Ke4! "White does not go with the King to e5, because Black would go with the King to f8; nor does he go to f5, because Black would go to f7, then to his own house as above, and so the game would be a draw; But he withdraws the King to e4 to gain the move."6... Kf8 Black doesn't know what to do. 7. Ke5 Ke8 8. Ke6 Kf8 9. f7 Kg7 10. Ke7 Kh7 11. Kf6 This leads to a quicker checkmate than the move chosen by Chapais. (11. f8=Q? stalemate) 11... Kh8 12. f8=Q+ Kh7 13. Qg7#

Fahrni's book contains a similar endgame to Lolli's position, so there is a high chance that he was familiar with Lolli's analysis. Maybe he just made two nice studies out of this messy position. Or maybe there was a real game Fahrni-Alapin.

H. Fahrni
Das Endspiel im Schach
1917
White wins
1. f6! gxf6 2. g6! hxg6 3. h6! +-

A useful link about this topic: www.chesshistory.com

Sunday, 24 September 2017

Festina Lente 2

T. Gorgiev
Ceskoslovensky Sach
6th Honourable Mention
1930

Draw

1. c6! 1. a4? h6! 2. c6 h5 3. a5 h4 4. a6 h3 5. a7 h2 6. c7 h1=Q# 1... h6! 2. a3! h5 2... Kc7 3. a4 Kxc6 4. a5! Kb5 5. Kb7! Kxa5 6. Kc6 h5 7. Kd5= Réti manoeuvre 3. a4 h4 4. a5 h3 5. a6 h2 6. a7 h1=Q stalemate 6... h1=R 7. c7 Rh8 stalemate

Monday, 18 September 2017

Study 126

Árpád Rusz
Malyshko-105 MT
2017
- after Richard Becker -

White wins

A few days after composing and publishing this study, I have discovered a very serious anticipation in the HHdbV. In 2009 Richard Becker published the following draw study: Study 126a. Although it seems that he hasn't found the main line from my work, my study can be considered no more than a version of his. The judge of that 2009 tourney stated that he didn’t award studies that only contained technical play and “database works”. Probably this was the reason the whole community missed to notice the existence of that groundbreaking study.

Thematic try: 1. b4? f5 mutual zugzwang 2. b5 f4! 3. exf4 d4 mutual zugzwang 4. b6 d3 mutual zugzwang 5. b7 d2 mutual zugzwang 6. b8=Q d1=Q mutual zugzwang


mutual zugzwang

7. h5 7. Kc7+ Kf7! 8. Qb4 Qh5! = 7... Qxh5 8. Kd7+ Kh7! = 8... Kf7? 9. Qe8+ +-; 8... Kg7? 9. Qe5+ Qxe5 10. fxe5 +-


The real solution starts with an amazing waiting move:
1. b3!! mutual zugzwang. White is very polite: it voluntarily allows black to be the one who is promoting first! 1... f5 2. b4 mutual zugzwang


Bugs Bunny?

2... f4! 3. exf4 d4 4. b5 mutual zugzwang 4... d3 5. b6 mutual zugzwang 5... d2 6. b7 mutual zugzwang


mutual zugzwang (!!)

6... d1=Q 7. b8=Q mutual zugzwang 7... Qg4+ 7... Qh5 8. Kd7+ +-; 7... Qd3 8. h5 (8. Qe5? Qh3+ =) 8... Qf5+ 9. Kb7+ Kh7 10. Qe5 +- 8. Kc7+ Kh7 9. Qb1+ Kh6 9... Kg7 10. Qb2+ Kf7 11. Qb3+ Kg7 12. Qc3+ Kf7 13. Qc4+ Kg7 14. Qd4+ +- 10. Qb6+ Kh5 11. Qf6 Qxh4 12. Qxh4+ Kxh4 We are back to another pawn ending although this is much simpler than the initial position of the study. The black king seems to be much closer to the pawn but the chessboard's geometry can be deceiving.

13. Kd6 Kg4 14. Ke5 +-

Update: On move seven, there is a nice try with stalemates discovered by "Paparazzi": 7... Qd5 8. Qe5! +- Try: 8. Qc7? Qf5+! 9. Kb8! Qf6! 10. h5 Qf8+! 11. Qc8

11... Kh7! 12. f5 Qf7! 13. Qc7

13... Kh8! 14. Qc8+ Kh7! 14... Kg7? 15. Qe6! Qxh5 16. f6+ Kh6 17. Qe3+ Kg6 18. Qe8+ +- 15. Qc7 Kh8 16. Qxf7 stalemate

Watch this study on a dynamic board! Click here!

Monday, 6 June 2016

Study 58

Árpád Rusz
Internet (Talkchess Forum)
2012
- after B. Jones & R. Brieger -

White wins

1. Rh8+! (Thematic try: 1. Nxe4? Nxb8+ 2. Kb7 Nxa6! 3. Kxa6 dxe4 4. hxg7 Kg8! 5. Kxa7 Kxg7 6. Ka6 Kg6! 7. Ka5 Kg5! =) 1... Kxh8 2. Nxe4 Nb8+ 3. Kb7 Nxa6 4. Kxa6 dxe4

5. h7!! Paradoxically, the reason for the Rook sacrifice is not to play hxg7 with check, White is playing to get rid of its harmful Pawn without capturing the Black Pawn! 5...Kxh7 6. Kxa7 Kg6 7. Ka6 Kg5 8. Ka5 Kg4 9. Kb6 Kf5 10. Kb5 Kf4 11. Kc6 Kg5 12.Kc5 Kg4 13. Kd6 Kf5 14. Kd5 Kf4 15. Ke6 +- White wins using the distant opposition.

Watch this study on a dynamic board! Click here!

Árpád Rusz
Internet (Talkchess Forum)
2012
- after B. Jones & R. Brieger -
- version -

White wins

1. Nf7+! 1. Nxe4? Bxa6+ 2. Kxa6 dxe4 3. hxg7+ Kxh7! 4. Kxa7 Kxg7 5. Ka6 Kg6! 6. Ka5 Kg5! 7. Ka4 Kg4! =; 1. hxg7+? Kxh7 2. Nxe4 Bxa6+ 3. Kxa6 dxe4 4. Kxa7 Kxg7 = 1... Kxh7 2. Ng5+ Kh8 3. Nxe4 3. hxg7+? Kg8! 4.Nxe4 Bxa6+ 5. Kxa6 dxe4 6. Kxa7 Kxg7 = 3... Bxa6+ 4. Kxa6 dxe4

5. h7!! Kxh7 6. Kxa7 Kg6 7. Ka6! Kg5 8. Ka5! Kg4 9. Kb6 Kf5 10. Kb5 Kf4 11. Kc6 Kg5 12.Kc5 Kg4 13. Kd6 Kf5 14. Kd5 Kf4 15. Ke6 +-

Study 56

Árpád Rusz
Internet (Talkchess Forum)
2011
- after S. Hornecker -

White wins

1. d5 Kf8 2. Kb3 Ke7 3. Kc4 Kf6 4. Kb5 Kxg6 5. Kxa5

First main line: 5...Kf5 6. Kb5! g5 7. a5 g4 8. a6 g3 9. a7 g2 10. a8=Q g1=Q 11. Qa3 Ke4! (11... Ke5 12. Kc6 +-) 12. Kc6 Qd4 13. Qa5! (13. Qxd6? Qa4+ =) 13... Kf5 (13... Ke5 14. Qe1+ +-) 14. Qb5! (14. Qb6? Qxb6+ 15. Kxb6 Ke4! 16. Kc6 Ke5 -+ mutual zugzwang) 14... Kf6 (14... Ke5 15. Qe2+ +-) 15. Qb6 Qxb6+ 16. Kxb6 Kf5 17. Kc7! (17. Kc6? Ke5 -+ mutual zugzwang) 17... Ke5 18. Kc6 +- mutual zugzwang


echo

Second main line: 5... Kf7 6. Kb5 g5 7. Kc4! (7. a5? g4 8. a6 g3 9. a7 g2 10. a8=Q g1=Q 11. Qa3 Qg4 12. Qxd6 Ke8 =) 7... Ke7 8. Kd4 (minor duals 8. Kd3, 8. a5) 8... Kd7 9. Ke4 (minor dual 9. a5) 9... Kc7 10. a5! (10. Kf5? Kb6 11. Kxg5 Kc5! =) 10... Kb7 11. Kf5 Ka6 12. Kxg5 Kxa5 13. Kf6! Kb5 14. Ke7! (14. Ke6? Kc5 -+ mutual zugzwang) 14... Kc5 15. Ke6 echo mutual zugzwang


echo

Study 55

Árpád Rusz
Internet (Endgame Tablebases Forum)
2011

White wins

1. c4! mutual zugzwang 1. c3? c4! 2. cxb4 cxb3 3. axb3 Kxb3 -+ 1...bxc3 e.p. 2. dxc3 c4 3. b4 3. bxc4? c5 -+ 3... Ka4 4. Kxb2 Kb5 5. Ka3 Kb6 6. Ka4 Ka6 7. b5+! 7. a3? Kb6 8. b5 c5! stalemate 7... cxb5+ 8.Kb4 Kb6 9. a4 bxa4 10. Kxa4 Kc5 11. Ka5 Kc6 12. Kb4 Kd5 13. Kb5 +-

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Study 53

Árpád Rusz
Internet (Talkchess Forum)
2011
- after the game P. Laveryd - P. Wikstrom (1997) -
Draw

1. Nc2 Nd4+ 2. Nxd4 cxd4 3. g4! (3. f4? f5 4. g3 g6 -+) 3... g6! (3...g5?? 4. f4! gxf4 5. g5 +-) 4. e3! (4. f4? e6 5. g5 exd5 -+; 4. f3? f5 5. gxf5 g5! -+) 4... g5 5. exd4! (5. e4? e5 6. dxe6 fxe6 7. e5 dxe5 8. f3 e4 9. fxe4 e5 -+) 5... f5! 6. f3! (6. gxf5? g4 -+) 6... f4 7. Kc4! (7. Ka2? Kxa4 8. Kb2 b3 9. Kb1 Ka(b)5 10. Kc1 Kb5 11. Kb1 Ka4 12. Kb2 Kb4 13. Kb1 Kc3 -+) 7... Kxa4 stalemate

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Tuesday, 4 December 2007

Study 25

Árpád Rusz
Zoltán-65 JT
2007
Commendation

Draw

Thematic try: 1.Bc3? 1.Bb4? Rxa2 (1...bxa2? 2.Bc3 stalemate) 2.Bc3+ b2–+


The white pieces are pinning the black ones.

1...bxa2!! mutual zugzwang - virtual stalemate (1...Kxa2? 2.Bb4 Ka1 3.Bc3 Ka2 4.Bb4 positional draw) 2.Be1 Rxb5 3.Bc3+ Rb2 mutual zugzwang - virtual stalemate 4.Be1 Rxb6 5.Bc3+ Rb2–+

Solution:1.a3!! 1...Ra2 2.Bc3+ b2 3.Rxc2! mutual zugzwang 3...Bxc2+ [3...Rxa3 stalemate]


The black pieces are pinning the white ones!

4.Kxc2 mutual zugzwang 4...Rxa3 5.Bxb2+ Ka2 6.Bxa3 Kxa3 7.Kc3 Ka4 8.Kc2! [8.Kd3? Kb4! mutual zugzwang] 8...Kb4 9.Kd3 mutual zugzwang 9...Kxb5 [9...Kb3 stalemate] 10.Kc3 Kc6! 11.Kb3! [11.Kb4? Kxb6 mutual zugzwang] 11...Kxb6 12.Kb4 mutual zugzwang 12...Kc6 13.Ka4! [13.Ka5? b5 mutual zugzwang] 13...b5+ 14.Ka5! mutual zugzwang =

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Related studies: Study 25a Study 25b

Study 12

Árpád Rusz
Magyar Sakkvilág
2006

White wins

1.Ng6! [1.Rxg8? d5 2.Ng6 stalemate] 1...Qf8 [1...Qxg7 2.Nxf4#] 2.Rh7 [2.Nxf8? d5 3.Ng6 stalemate] 2...Qf6 3.Nxh4! [3.Rxh4+? Qxh4 4.Nxh4 d5! 5.Ng6 stalemate] 3...Qxh4 4.Rxh4+ Kxh4

5.d5!! [5.Kxh2? d5!=] 5...Kh3 6.d4 mutual zugzwang


virtual stalemate

6...Kh4 7.Kxh2 Kg5 8.Kg1 Kh4 9.Kg2 Kg5 10.Kf1 Kh4 11.Ke2 Kh3 12.Kd3 Kh4 13.Kc4 Kh3 14.Kb5 Kg2 15.Kc6 Kxf2 16.Kxd6 +-

Watch this study on a dynamic board! Click here!

Study 4

Árpád Rusz
Buletin Problemistic
2000

Draw

1.Ng2! [1.Nf5? exf3+ 2.Kxf3 Bxf5 3.gxf5 Kxf5–+] 1...Bd1+! 2.Kxd1 [2.Kf2? Bxf3–+] 2...exf3 3.Ne1! [3.Nxf4? Kxf4 4.Kd2 Kg5!! (4...Kxg4? 5.Ke3 mutual zugwang 5...h6 6.Kf2 Kf4 7.Ke1! Ke3 8.Kf1 mutual zugwang 8...f2 (8...h5 9.Ke1! h4 10.Kf1! (10.h3? Ke4 11.Kf1 Ke5! 12.Ke1 Kf5!! 13.Kf1 Ke4 14.Ke1 Ke3 zugwang 15.Kf1 f2–+ mutual zugwang) 10...f2 11.h3 mutual zugwang 11...Kf3 stalemate) 9.h3! h5 10.h4 Kf3 stalemate) 5.Kd3!? Kh4! 6.Ke3 Kxg4 mutual zugwang 7.Kf2 Kf4 8.Ke1 (8.Kf1 Ke3 9.Ke1 f2+ 10.Kf1 Kf3!+-) 8...Ke3 9.Kf1 f2+-] 3...f2 4.Nf3+ Kxg4 5.Nd2 [5.Ke2? f1Q+ 6.Kxf1 Kxf3–+] 5...f3 6.Kc2 Kh3 7.Kd3 Kg2 8.Ke3=

Watch this study on a dynamic board! Click here!

Related study: Study 4a