Chess

William Hartston
Thursday 07 August 1997 18:02 EDT
Comments

Your support helps us to tell the story

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging.

At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.

The Independent is trusted by Americans across the entire political spectrum. And unlike many other quality news outlets, we choose not to lock Americans out of our reporting and analysis with paywalls. We believe quality journalism should be available to everyone, paid for by those who can afford it.

Your support makes all the difference.

This is one of the most remarkable endgame studies in the literature. Composed by Anatoly Kuznetsov in 1964, it is White to play and win. It is extraordinary enough that a bishop and knight can win against bishop and two pawns, but to achieve it from such a natural looking position is a major achievement.

It is, of course, a great help to the solver to know that White can win the position. The only hope must be to trap the black bishop somehow, so the first move has to be 1.Bd3 - otherwise Black will just set his man free by playing g5. But that seems to leave Black with two good moves: 1...Bg8 and 1...Kb7. It turns out that they come to much the same thing.

After 1...Bg8, apparently setting free the bishop, White plays 2.Be4! with the threat of Ne7+. The black bishop has a seven-square diagonal available to it, but any move between g8 and a2 loses the bishop to a discovered check from the knight. Indeed, after 2.Be4, Black has no alternative but to scurry back and hide with 2...Bh7. Now comes 3.Ne7+ and we should begin to see the idea. If Black's king ever goes to c7 or b6, White plays Nd5+ followed by Nf6 winning the bishop. After 1.Bd3 Kb7 2.Ne7, we would have reached an exactly similar situation.

So back on the main line after 3.Ne7+, we continue 3...Ka7 and now White has to be careful. 4.Kf2 Ka6! 5.Ke3 Kb5 6.Kd4 h4 7.Ke5 Kc5 8.Kf6 Kd4 leads only to a draw. Instead, White plays 4.Bd3! keeping the king locked in an extraordinary force-field. There follows 4...Kb7 5.Kf2 Kb8 6.Ke3 Kb7 7.Kd4 h4 (the best moment to try this advance) 8.Ke3! Kb8 9.Kf3 Kb7 10.Kg4 Kb8 11.Kg5! (Kxh4 would be a blunder because of g5+) 11...h3 12.Kh6 h2 13.Be4 and White wins. Black loses all his men and White mates with bishop and knight.

Most extraordinary of all, this concoction only won third prize in

a composing tournament in 1964. The top two prize-winners must have been very unusual indeed.

Join our commenting forum

Join thought-provoking conversations, follow other Independent readers and see their replies

Comments

Thank you for registering

Please refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in