3320 Mark Hebden v Keith Arkell, British championship 2013. Two old rivals met in a tight contest. How did White (to play) score the point? Photograph: Graphic
Wei Yi, aged 14, stole the early show in the current World Cup at Tromso when he knocked out two eminent grandmasters and gave China its best prospect yet. The boy is already the youngest GM in the world and the fourth youngest of all time.
Beijing has long hankered to match its dominance in women's chess with a similar rise in the men's game but until now its best GMs have stalled at the top 20-50 level. Now China will pour financial and technical resources into ensuring that the fast improving Wei Yi fulfils his potential.
More generally the early World Cup games showed that Russia and Ukraine possess elite GM strength in depth which other nations can only dream of. The round of the last 32 had 17 GMs from Russia/Ukraine and five of these reached Saturday's quarter-finals.
Vladimir Malakhov, 32, who abandoned a career in nuclear physics to become a chess pro, will remember Tromso with horror. He was short of time but crushing the No2 seed, Fabiano Caruana, and could have mated by a queen-rook crossboard checking sequence so simple that it is taught to children as 'The Lawnmower'. Malakhov missed it. Two moves on he could have won Caruana's queen for nothing by a couple of obvious checks. Malakhov missed that, too.
The quarter-finals this weekend will offer free and live online coverage at worldcup2013.liveschach.net, where a single page shows all four games, Houdini computer analysis and live video commentary by Nigel Short.
The US champion, Gata Kamsky, played a fine attack below, though his 18 f5! sacrifice was good for only a draw until Black weakened by 23...Kg7? (Qb6) and 26...Bd6? (Be7). White's final rook offer leads to gxh5 31 Rf6+ Kg7 32 Rg6+ Kh7 33 Qg7 mate or Kxh5 31 Qg7! Rh8 32 Qxg6+ Kh4 33 Rf5 and mates.