(;
AB[bs][cr][bq][dq][dp][cp][bp][ap][bo][fq][fp][en][ro][rn][sm][rl][qm][pm][on][oo][op][or][oq][os][pr][lr][mq][kq][jp][ko][lo][ln][km][ll]
AW[qn][qo][rp][so][sq][pp][pq][qq][qr][qs][ps][kr][jr][iq][ip][io][jn][kn][kl][jl][im][gn][go][gp][gq][gr][fr][er][dr][ds][cs][co][cn][bn][an][ao][cl][dm][em][fm]
LB[fo:a][jq:b][po:c]
C[Rank Black's three marked plays.

Source:
   The Endgame, Chap. 5, pp. 61-63
   Tomoko Ogawa & James Davies, Ishi Press]
(;
B[po]
C[Best.  Two points in sente.];
W[rr]
C[Otherwise White dies.]
)
    (;
    B[jq]
    C[2nd best.  Three points in gote.];
    W[]C[And if White ends in gote elsewhere...];
    B[ir];
    W[hr];
    B[ks]
    C[And Black can play this hane in sente.
Black plays the cut first for an extra
ko threat.]
    )
    (;
    B[fo]
    LB[do:a][eo:b]
    C[Worst.  Only 1.5 points in gote.
Black 1 saves one stone, and if Black
has a chance to play A, Black makes
one more point.
If White plays first at B, White captures
one stone, but no points of territory.]
    )
)
