Former world chess champion Garry Kasparov will not run for the Russian presidency because his supporters have been unable to rent a hall for a nomination gathering, his spokeswoman said today.

A Moscow court sentenced former chess champion Garry Kasparov to five days in jail today for leading an opposition protest.

A member of a Russian opposition group led by former chess champion Garry Kasparov has been forcefully put in a psychiatric clinic in what activists said was revenge for critical reporting.

Investigators from Russia's security agency today questioned opposition leader Garry Kasparov, days after massive police crackdowns on anti-government protests in Moscow and St Petersburg last weekend.