Thank you writesbad for 'scull' and 'Basle'; I actually had 'Berne' for the Swiss city. But, as I have Krueger's forename as 'Freddy' (correct according to Google), I think 22a can't be 'squeeze'. I've got 'squidge' now.
squidge
� verb informal 1 squash or crush.
(from one of the Oxford dictionaries)