4/25/2021 – In the endgame riddle from 15 April ChessBase readers were invited to analyse an interesting and complicated endgame knight vs bishop. In the game E. Torre vs O. Jakobsen, Amsterdam 1973, from which the riddle was taken, the knight defeated the bishop, but Karsten Müller wanted to know whether the knight would also have won against best defense. Now, he has the answer.

4/15/2021 – The International Master Ole Jakobsen (19 October 1942 - 30 June 2010) from Denmark is not particularly well-known but from 1960 to 1980 he was one of the best players of his country and in 1969, 1971 and 1980 he won the Danish Championship. In 1973 he finished fourth in the IBM-B Tournament in Amsterdam, where he defeated Eugenio Torre, who was soon to become one of the world's best players, in an interesting endgame bishop versus knight. Karsten Müller has taken a closer look at this endgame and invites you to help analysing it.