sentences:  Wisker moved to London in 1866 to become a reporter for the "City Press" and befriended Howard Staunton.His proficiency at chess improved rapidly, and he won the 1870 British Chess Championship after a play-off against Amos Burn, ahead of Blackburne, the defending champion.He won again in 1872 after a play-off against the first British champion, Cecil Valentine De Vere.