In 1981, at 69, he was a finalist among Americans seeking to qualify for the world championship matches.

The match became the first, and so far only, world championship match to be abandoned without result.

The 7th game of the world championship match.

They played their world championship match under its auspices in October 1993.

Game 4 of the world championship match in London ended after 69 grueling moves.

This second match is sometimes considered an unofficial world championship match.

Barneveld averaged 102.48, which was his second highest average in a world championship match.

And it is not just a matter of the several-million-dollar purses for the world championship match.

This was also the first world championship match in which the players had seconds to help them with analysis during adjournments.

At this level, eight games are too few to allow any margin for error (in world championship matches, they play 24).

In 1981, at 69, he was a finalist among Americans seeking to qualify for the world championship matches.

The match became the first, and so far only, world championship match to be abandoned without result.

The 7th game of the world championship match.

They played their world championship match under its auspices in October 1993.

Game 4 of the world championship match in London ended after 69 grueling moves.

This second match is sometimes considered an unofficial world championship match.

Barneveld averaged 102.48, which was his second highest average in a world championship match.

And it is not just a matter of the several-million-dollar purses for the world championship match.

This was also the first world championship match in which the players had seconds to help them with analysis during adjournments.

At this level, eight games are too few to allow any margin for error (in world championship matches, they play 24).