(;
AB[qe][pd][nd][jc][qk][ok][pq]
AW[dd][dp][jq][qf][pf][qi]
C[White plays.

Source:
    American Go Journal, Summer 1989, Vol. 23, No. 3, pp. 22-23
    Finish the Opening, James Kerwin 1p]
(;
W[qm]
C[Even though White is an amateur 2 dan, his decision to invade here is a common mistake, viz., starting the middle game before the opening if finished.];
B[om]
LB[ng:A]
C[When Black caps here, the game is already over!  White can live on the lower right, but only in gote, with Black pressing from the outside.  Black will then attack the top right group with A.  Both White groups will live, but only with a tiny amount of territory.  More importantly, Black will have an outside wall stretching all the way across the board.  Black has a sure win.]
)
    (;
    W[mp]
    C[The correct sequence starts with this forcing move.];
    B[po]
    C[Black must respond.];
    W[dj]
    C[White can take the biggest opening point here.  White has struck a much better balance between reducing Black's territory and building his own at the same time.  So opening moves have double value.  Invasions have a single value, i.e., you deny your opponent territory, but you get nothing for yourself.]
    )
)

