[M] P. to K. B's 5th perhaps stronger.
[N] Weak. We cannot see its object. Why not Q. R. to Q's sq?
[O] The best move.
[P] Preparatory to Kt. to Kt's 4th, and then B. to K's 5th.
[Q] Preventing Black's contemplated move with the Q.
[R] With a view of withdrawing the B. and playing the R. to R's 3d.
[S] The first move of a combination, which gave the victory to Philadelphia.
[T] Insures the winning of the Kt.
[U] A powerful move, as it compels Black to take the Kt., and thereby opens White's R's file.
[V] If B. takes P., White would have played Q. to K. Kt's 5th, threatening to check K. and Q. with R., or win the R.