Fig. 11.—Practise these strengths till you are sure of them.
Fig. 12.—White spotwards and leave red winner.
Fig. 13.—Play here to cannon, and leave the red winner, barely disturbing\the white.
Fig. 14.—Play very fine on the white so as not to disturb it. Avoid the run\through in this very useful class of stroke.
Fig. 15.—Gently here to leave red winner. Forefinger bridge. Better than\trying to bring them together. This is a stroke which requires some delicacy of execution; it should be practised till the red can be left near the corner pocket with certainty.