(;
AB[qb][pc][oc][od][qd][qe][qp][rq][ro][pn][ql][rl][rk][rj][qj][pk][no][mo][lo][br][cr][cq][dp][eq][er][fq][dj][ek][fk][dl][cl][gl][gm][ch][bg][eg][ef][ed][fc][eb][fe][ge][jc]
AW[db][dc][dd][de][ee][ff][cf][bf][lc][mb][nc][ob][pb][pd][ii][mi][pi][qi][pj][ok][pl][nl][qq][pq][op][np][mp][lp][kp][hq][gq][hr][fr][gs][fp][fn][fm][fl][el][dm][co][cp][bq]
LB[hj:A][ki:B][bp:C]
C[Black plays:  A, B, or C?

Source:
    Go World #5, Jan-Feb 1978, p. 70
    Blueprint 361]
(;
B[ki]
C[A quick territory count shows that the game is close.  Endgame or safe moves may not be productive.

So Black should try to break open this close game by splitting where White is thin.];
W[ik];B[kk];W[im];B[mk];W[ll];B[kl];W[lk];B[lj];W[mj];B[ml];W[lm]
C[Both sides are cut apart.  A hard fight lies ahead, but Black has good chances.]
)
    (;
    B[hj]
    C[A losing move.

This move would be worth considering as a way to wrap up the game, only if Black had a big lead.];
    W[ij];B[hi];W[ih];B[gg];W[je]
    C[White can look forward to a fair amount of center territory.

Black's taking territory where Black is already solid is not worth very much.]
    )
    (;
    B[bp]
    C[This capture is bigger than one might think.  However, ...];
    W[bo];B[aq];W[hh]
    LB[gk:A]
    C[... White's strengthening center play here is even bigger.  In addition, the danger of a  White cut at A is increasing.]
    )
    (;
    W[ar]
    C[Note that White has the following sequence for a corner ko, which is one reason why Black defending here first is such a big move.];
    B[bp];W[ap]
    C[However, if Black first keeps White busy with the correct splitting sequence shown previously, White probably won't have the chance to start the ko.]
    )
)

