Chess puzzle

No. 717

White to play. Gormally–Claridge-Hansen, British Championships 2022 Black’s last move, Ra8-a7,was a fatal mistake. Which move won the game for White? Answers should be emailed to chess@spectator.co.uk by Monday 29 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

No. 716

Black to play. A variation from McShane-Hamitevici, Chennai 2022. I avoided this position, but lost in a different way. White would be three pawns up, but facing a fierce attack. Which move wins the game for Black? Answers should be emailed to chess@spectator.co.uk by Monday 22 August. There is a prize of £20 for the

No. 715

White to play. Navara – Batsuren, Chennai Olympiad 2022. In this strange position Czech grandmaster David Navara found an elegant way to conclude the game. Which move did he play next? Answers should be emailed to chess@spectator.co.uk by 16 August. There is a prize of £20 for the first correct answer out of a hat.

No. 714

Black to play. Smirnov – Duda, Chennai Olympiad 2022. With his next move, Duda forced a decisive gain of material. What did he play? Answers should be emailed to chess@spectator.co.uk by 9 August. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow

No. 713

White to play and mate in two. Composed by Henri Rinck, La Strategie, 1892. Answers should be emailed to chess@spectator.co.uk by Monday 2 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

No. 712

White to play and mate in two. Composed by Philip Hamilton Williams, British Chess Magazine, 1895. Answers should be emailed to chess@spectator.co.uk by Monday 25 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

No. 711

White to play. Short-Timman, Staunton Memorial 2008. Short played 1 Qb3, missing an unusual opportunity to cause havoc with the pair of knights. Which move gives White a decisive advantage? Answers should be emailed to chess@spectator.co.uk by Monday 18 July. There is a prize of £20 for the first correct answer out of a hat.

No. 710

White to play. J. Polgar-Carlsen, Casual blitz game, Madrid 2022. Carlsen’s last move 15…Ra8-c8 was a losing blunder. How did Judit Polgar exploit it? Answers should be emailed to chess@spectator.co.uk by Monday 11 July. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and

No. 709

White to play. Miles-Pritchett, Lloyds Bank Masters 1982. Tony Miles found a powerful counter to the queenside threats. What did he play? Email answers to chess@spectator.co.uk by Monday 4 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

No. 708

White to play. Rezasade-Movsesian, Bundesliga 2022. White was an underdog in this game, but found a subtle winning idea. What did he play? Answers should be emailed to chess@spectator.co.uk by Monday 27 June. There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow

No. 707

White to play. Trent-Carlstedt, Hamburg 2022. Lawrence Trent spotted a way to deliver a quick mate. Which move did he play? Answers should be emailed to chess@spectator.co.uk by Monday 20 June. 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. 706

White to play and mate in 3. Composed by Sigmund Franz Josef Lehner, 1864. There are several ways to give mate in 4 moves, but it takes a delicate finesse to get the job done in 3. What is White’s first move? Answers should be emailed to chess@spectator.co.uk by Monday 13 June. There is a

No. 705

White to play. Giri-Praggnanandhaa, Chessable Masters 2022. A game from the preliminary stages. What did Giri play to induce resignation? Answers should be emailed to chess@spectator.co.uk by Monday 6 June. 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. 704

Black to play. Bacrot-Anand, Bastia Rapid 2001. A spectacular blow from Anand prompted Bacrot to resign. What did he play? Answers should be emailed to chess@spectator.co.uk by Monday 30 May. 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. 703

White to play. Vachier-Lagrave-Caruana, Bucharest 2022. The Bh4 can retreat to g3, f2 or e1. Which one is best, and why? Answers should be emailed to chess@spectator.co.uk by Monday 23 May. 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. 702

White to play. Averbakh-Zita, Szczawno-Zdroj 1950. Black has just interposed Rb6-g6, so White needs an accurate finish before e3-e2 mate arrives. What did Averbakh play next? Answers should be emailed to chess@spectator.co.uk by Monday 16 May. There is a prize of £20 for the first correct answer out of a hat. Please include a postal

No. 701

White to play. Reshevsky-Savon, Petropolis 1973. Reshevsky played the awful 1 Qxg6+, and resigned after 1…Bxg6. Many moves win, but which one forces mate in just three moves? Email answers to chess@spectator.co.uk by Monday 9 May. There is a prize of £20 for the first correct answer picked. Please include a postal address. Last week’s

No. 700

White to play and draw. Composed by Jan Timman, 2011. 1 h8=Q Rxd5 wins for Black, so how does White escape? Answers should be emailed to chess@spectator.co.uk by Tuesday 3 May. 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. 699

Black to play. Sukandar-Niemann, Reykjavik Open 2022. In this preposterous position, Black found a quick forced mate. What did he play? Answers should be emailed to chess@spectator.co.uk by Monday 25 April. 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. 698

White to play. A variation from Esipenko-Nakamura, Fide Grand Prix Berlin 2022. Which move would allow White to force a win? Email answers to chess@spectator.co.uk by Monday 18 April. 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