(;
GM[1]FF[4]VW[]AP[Many Faces of Go:10.0]
SZ[19]
HA[0]
ST[1]
PB[Kato Masao]
PW[Cho Chikun]
KM[5.5]
SO[BGJ 62. July 1984. Page 13.]

C[Copyright British Go Association 1984, 2001 
];B[qd]
C[One of the more curious and whimsical positions that can arise
is a triple ko. It usually occurs about once a year in professional
games (less in amateur Go as the possibility goes unnoticed).
Here is a good example between a youthful Kato Masao (Black)
and Cho Chikun. The final semeai is both entertaining and instructive.
];W[dd];B[pq];W[dq];B[oc];W[po];B[qo];W[pp]
;B[qp];W[oq];B[qn];W[pn];B[qm];W[pr];B[qq];W[np];B[do];W[co]
;B[cn];W[cp];B[dn];W[fq];B[cj];W[jc];B[cg];W[dj];B[ck];W[mc]
;B[fc];W[ec];B[fd];W[df];B[dg];W[ef];B[be];W[if];B[gf];W[eg]
;B[hg];W[hc];B[hd];W[id];B[hb];W[gc];B[gb];W[eb];B[gd];W[ic]
;B[fb];W[bc];B[hi];W[jh];B[ij];W[rd];B[rc];W[pd];B[qc];W[pf]
;B[je];W[he];B[ie];W[hf];B[kd];W[kc];B[ld];W[lc];B[ge];W[jf]
;B[kf];W[kg];B[lf];W[pc];B[pb];W[od];B[lg];W[ob];B[ki];W[re]
;B[jq];W[qi];B[nr];W[or];B[mq];W[qk];B[rk];W[lo];B[rj];W[dh]
;B[ch];W[hq];B[hr];W[iq];B[ir];W[jp];B[kq];W[gr];B[ko];W[kp]
;B[lp];W[ln];B[mp];W[mo];B[lr];W[jm];B[rg];W[qg];B[qa];W[rb]
;B[sb];W[ra];B[qe];W[rf];B[qf];W[qh];B[pe];W[oe];B[of];W[pg]
;B[nc];W[nb];B[nd];W[ne];B[md];W[nf];B[oa];W[mb];B[sd];W[rh]
;B[ib];W[jb];B[ja];W[ka];B[la];W[ia];B[lb];W[na];B[qb];W[sg]
;B[se];W[sf];B[ha];W[sc];B[sd];W[se];B[ja];W[sc];B[sa];W[ia]
;B[sd];W[rb];B[ra];W[sc];B[ja];W[pa];B[sd]
C[[EBGJ - I have added a couple of laps of the triple ko to make
it obvious what is happening here. === sgb\] 
]
(;W[ia])
(;W[ia];B[oa];W[sc];B[ja];W[pa];B[sd];W[ia];B[oa];W[sc]
;B[ja];W[pa];B[sd]))
