(;GM[1]FF[3]
RU[Japanese]SZ[19]HA[0]KM[5.5]
PW[White]
PB[Black]
GN[White (W) vs. Black (B)]
DT[1999-07-27]
SY[Cgoban 1.9.2]TM[30:00(5x1:00)];
AW[po][qo][so][pp][rp][oq][pq][qq][rq][or][pr][os]
AB[pn][qn][rn][sn][oo][ro][op][nq][nr][qr][rr][sr][ns][ps][rs]PL[2]
C[white to live unconditionally
]
(;W[sq];B[sp];W[qs]
C[RIGHT
white lives by double ko, black cannot win this
])
(;W[qs];B[sq]
(;W[sp];B[ps]C[ko
])
(;W[ps];B[sp])
)
(;W[sp];B[sq]C[ko
])
)