Chess puzzle

No. 828

Black to play. Erigaisi-Dubov, Tata Steel India Blitz, November 2024. Dubov chose Rg4-e4, overlooking a tactical shot that would have won the game. What was the winning move? Email answers to chess@spectator.co.uk by Monday 25 November. There is a prize of £20 for the first correct answer out of a hat. Please include a postal

No. 827

White to play and mate in 2. Composed by Sam Loyd, La Stratégie, 1867. Email answers to chess@spectator.co.uk by Monday 18 November. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize delivery. Last week’s solution 1 Be8! threatens

No. 826

White to play and mate in 2. Composed by Otto Wurzburg, the Pittsburgh Gazette Times, 1917. Answers should be emailed to chess@spectator.co.uk by Monday 11 November. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize delivery. Last week’s

No. 825

White to play. Abdusattorov-Maghoodloo, European Club Cup, October 2024. Black’s preceding move Qg6xg3 backfired spectacularly. Which move allowed White to turn the tables? Email answers to chess@spectator.co.uk by Monday 4 November. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks

No. 824

White to play and mate in two moves. Composed by Hermann Feodor Lehner, Deutsche Schachzeitung, 1873. Email answers to chess@spectator.co.uk by Monday 28 October. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize delivery. Last week’s solution 1…f6!

No. 823

Black to play. Dominguez-Shankland, US Championship 2024. Which move allows Black to escape perpetual check and win? Email answers to chess@spectator.co.uk by Monday 21 October. There is a prize of £20 for the first correct answer out of a hat. Please include an address and allow six weeks for prize delivery. Last week’s solution 1…Kd3!

No. 822

Black to play. Mamedyarov-Maghsoodloo, Global Chess League, October 2024. Maghsoodloo chose wrongly here. Out of 1…Kd3, 1…b2+ and 1…c2, which one is the best? Answers should be emailed to chess@spectator.co.uk by Monday 14 October. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and

No. 821

White to play. Ciolacu-Khotenashvili, Fide Women’s Olympiad, Budapest, September 2024. How did White crown her kingside attack? Email answers to chess@spectator.co.uk by Monday 7 October. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize delivery. Last week’s solution

No. 820

White to play. Kulaots-Kadric, Budapest Olympiad, September 2024. The Estonian grandmaster spotted a neat sequence to gain a decisive material advantage. What was his first move here? Email answers to chess@spectator.co.uk by Monday 30 September. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address

No. 819

Le-Sindarov, Budapest Olympiad, September 2024. White’s next move induced immediate resignation. What did he play? Answers should be emailed to chess@spectator.co.uk by Monday 23 September. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize delivery. Last week’s solution

No. 818

White to play. Niemann-Nakamura, Chess.com Speed Chess, Paris 2024. In this game from the third-place playoff match, Niemann crowned his attack in style. Which move did he play? Email answers to chess@spectator.co.uk by Monday 16 September. There is a prize of £20 for the first correct answer out of a hat. Please include a postal

No. 817

White to play and mate in two moves. Composed by Dmitry Vasilevich Klark, La Stratégie, 1868. Answers should be emailed to chess@spectator.co.uk by Monday 9 September. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize delivery. Last week’s

No. 816

White to play. Caruana-Firouzja, Sinquefield Cup, 2024. Caruana exchanged rooks, but soon ran out of checks and resigned before the b2 pawn could promote. Which move would have secured a draw here? Email answers to chess@spectator.co.uk by Monday 2 September. There is a prize of £20 for the first correct answer out of a hat.

No. 815

White to play. Maghsoodloo-Nepomniachtchi, Fide World Rapid Team Championship, 2024. Maghsoodloo found a beautiful winning sequence here. What was his first move? Email answers to chess@spectator.co.uk by Monday 26 August. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for

No. 814

Black to play. Vidit-Al-Mudahka, Fide World Rapid Team Championship, 2024. The Qatari grandmaster landed a decisive blow here. What did he play? Email answers tochess@spectator.co.uk by Monday 19 August. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize

No. 813

White to play and mate in two moves. Composed by C.W.M. Feist, Hampshire Magazine, 1884. Email answers to chess@spectator.co.uk by Monday 12 August. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize delivery. Last week’s solution 1…Rxh4+! 2

No. 812

Black to play. Sokolovsky-Chopra, Biel Masters, 2024. Another game played on 20 July 2024. Black is in control, but which move struck the decisive blow? Email answers to chess@spectator.co.uk by Monday 5 August. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address. Last week’s

No. 811

White to play. This is a variation from Mirkovic-Gluzman, Belgrade 1991. Which move allows White to gain a decisive material advantage? Email answers to chess@spectator.co.uk by Monday 29 July. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize

No. 810

White has just played Kf3-e3. Which response showed this to be a decisive mistake? Email answers to chess@spectator.co.uk by Monday 22 July. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize delivery. Last week’s solution 1 Bd3! e.g.

No. 809

White to play and mate in two moves. Composed by Philip Hamilton Williams, The Chess Amateur, 1914. Email answers to chess@spectator.co.uk by Monday 15 July. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize delivery. Last week’s solution