IItem 1 Canadian researchers report they have "solved" checkers, developing a program that cannot lose in a game popular with young and old alike for more than a thousand years.

"The program can achieve at least a draw against any opponent, playing either the black or white pieces," the researchers say in this week's online edition of the journal Science.

IItem 2 Canadian researchers report they have "solved" checkers, developing a program that cannot lose in a game popular with young and old alike for more than a thousand years.

"The program can achieve at least a draw against any opponent, playing either the black or white pieces," the researchers say in this week's online edition of the journal Science.

IItem 3 Canadian researchers report they have "solved" checkers, developing a program that cannot lose in a game popular with young and old alike for more than a thousand years.

"The program can achieve at least a draw against any opponent, playing either the black or white pieces," the researchers say in this week's online edition of the journal Science.

IItem 4 Canadian researchers report they have "solved" checkers, developing a program that cannot lose in a game popular with young and old alike for more than a thousand years.

"The program can achieve at least a draw against any opponent, playing either the black or white pieces," the researchers say in this week's online edition of the journal Science.

IItem 5 Canadian researchers report they have "solved" checkers, developing a program that cannot lose in a game popular with young and old alike for more than a thousand years.

"The program can achieve at least a draw against any opponent, playing either the black or white pieces," the researchers say in this week's online edition of the journal Science.

IItem 6 Canadian researchers report they have "solved" checkers, developing a program that cannot lose in a game popular with young and old alike for more than a thousand years.

"The program can achieve at least a draw against any opponent, playing either the black or white pieces," the researchers say in this week's online edition of the journal Science.

IItem 7 Canadian researchers report they have "solved" checkers, developing a program that cannot lose in a game popular with young and old alike for more than a thousand years.

"The program can achieve at least a draw against any opponent, playing either the black or white pieces," the researchers say in this week's online edition of the journal Science.

IItem 8 Canadian researchers report they have "solved" checkers, developing a program that cannot lose in a game popular with young and old alike for more than a thousand years.

"The program can achieve at least a draw against any opponent, playing either the black or white pieces," the researchers say in this week's online edition of the journal Science.