invalid problem set
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life and death
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Problem | 315 |
Created | 2000-12-14 |
Source | game vs. RobinHood |
Rating | |
Difficulty | 3.2 kyu |
Average Solve Time | 63 secs |
User Attempts |
947 / 5062 |
Solve Ratio Rating | 1 kyu |
| rating history |
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]
SZ[19]RU[Japanese]KM[5.50]TM[1800]
GN[White (W) vs. Black (B)]PB[Black]PW[White]DT[1999-07-28]SY[Cgoban 1.9.2]
;AW[pl][ql][nm][om][qm][rm][lo][mo][no][oo][pp][nq][oq][pq][qq][pr][qr][rr][sr][rs]AB[qh][ri][pm][on][pn][qn][rn][po][qo][kp][lp][mp][np][op][qp][sp][rq][lr][mr][nr][or][ns][os][ps][qs]C[what should white do? assume no outside ko threats exist.
]PL[W]
(;W[sn]
;B[so]
(;W[sm]
;B[mq]
(;W[rp]
;B[ro]
(;W[nn]C[RIGHT
white gets a seki
])
(;W[sq]
;B[ss]))
(;W[sq]
;B[ss])
(;W[nn]
;B[sq]
(;W[rp]
;B[ss])
(;W[ro]
;B[ss]))
(;W[ro]CR[ro]
;B[rp]CR[rp]
;W[nn]CR[nn]C[RIGHT
seki]))
(;W[rp]
(;B[sm]
(;W[sq]
;B[sk]C[black connects out
])
(;W[sl]
;B[ro]
;W[nn]
;B[mq]
;W[sn]C[this isn't great as white has to fix later at T7
]))
(;B[ro]
;W[sm]
;B[mq]))
(;W[nn]
;B[sm]
;W[sl]
;B[rp]
;W[sn]
;B[mq]C[not so great for white because a fix is needed at T7 to avoid ko later
]))
(;W[sq]
;B[rp]
(;W[sn]
;B[mq])
(;W[nn]
;B[mq]))
(;W[mq]
;B[lq])
(;W[nn]
;B[mq]
(;W[sq]
;B[ss])
(;W[sn]
;B[sq]
(;W[ro]
;B[ss])
(;W[so]
;B[ss]))
(;W[so]
;B[sn]
(;W[sm]
;B[ro])
(;W[ro]
;B[rp]
(;W[ro]
;B[sq])
(;W[sm]
;B[sq]))
(;W[sq]
;B[ss])))
(;W[so]
;B[sn]
(;W[sq]
;B[rp]
(;W[nn]
;B[mq])
(;W[sm]
;B[mq]))
(;W[ro]
;B[mq]
;W[sm]
;B[rp]
;W[nn]
;B[sq])
(;W[sm]
;B[mq]
(;W[sq]
;B[rp])
(;W[ro]
;B[rp]))
(;W[nn]
;B[mq]
(;W[sm]
;B[ro])
(;W[ro]
;B[rp]
;W[sm]
;B[sq])
(;W[sq]
;B[ss])))
(;W[ro]
;B[sn]
(;W[nn]
;B[mq]
(;W[rp]
;B[so]
;W[rp])
(;W[so]
;B[rp]
(;W[sm]
;B[sq])
(;W[ro]
;B[sq])
(;W[so]
;B[sq]))
(;W[sm]
;B[sq]))
(;W[sm]
;B[mq]
(;W[sq]
;B[ss])
(;W[rp]
;B[so]
;W[nn]
;B[sq])
(;W[nn]
;B[sq]))))
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