[A] A favorite move with several of the strongest of modern players.
[B] If White take P. with P., the Black K. B. is brought into play; and if not, the advance of P. to B's 5th is threatened.
[C] Chiefly to double White's Pawns.
[D] Black foresaw the intended attack on the B. P., and by providing for it in this way brought another Piece into action.
[E] White keeps up the attack on the B. P. with a great deal of vigor. The move of R. P. two was a very good one.
[F] The best move.
[G] The R. is well posted—for attack and defence.
[H] Black has now resumed the offensive.
[I] Threatening to take Q. if P. takes P., and attacking Q. R. at the same time. There was still another motive for this move, viz.: to induce White to take R. P., foreseeing the R. would be lost subsequently.