Please give the status of the marked black group. It's the black's turn.
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[19]KM[6.50]
PW[Blanc]PB[Noir]AW[ni][qi][mj][nj][qj][lk][nk][pk][qk][kl][nl][rl][km][om][pm][qm][kn][ln][lo][lp][qp][kq][qq][sq][kr][lr][nr][or][qr][rr][sr][ms][ns][ps][qs]AB[nh][ph][qh][li][mi][oi][ri][lj][oj][rj][mk][rk][ml][pl][lm][mm][mn][mo][po][qo][ro][mp][pp][rp][sp][lq][mq][nq][pq][rq][mr][pr]LB[eo:A][fo:D][go:S][ho:K]TR[mo][po]C[If black play well (it's his turn), what is the status of the marked black group ?
(A)live, (D)ead, (S)eki or (K)o for life ?
]
(;B[eo]CR[eo]
;W[en]CR[en]C[Please play as black and make the group alive without a ko and without a seki.]
(;B[rn]CR[rn]
(;W[sn]CR[sn]C[CHOICE]
;B[rm]CR[rm]
;W[sm]CR[sm]
(;B[ql]CR[ql]
;W[ol]CR[ol]
;B[ql]CR[ql]
;W[pl]CR[pl]C[RIGHT White have no eye and black have one.]
;B[oq]CR[oq])
(;B[so]CR[so]
;W[sl]CR[sl]
;B[ql]CR[ql]
;W[ol]CR[ol]
;B[ql]CR[ql]
;W[pl]CR[pl]C[RIGHT White have no eye and black have one.]
;B[oq]CR[oq])
(;B[sk]CR[sk]
;W[sl]CR[sl]
;B[ql]CR[ql]
;W[ol]CR[ol]
;B[ql]CR[ql]
;W[pl]CR[pl]C[RIGHT White have no eye and black have one.]
;B[oq]CR[oq]))
(;W[rm]CR[rm]C[CHOICE]
;B[sn]CR[sn]LB[so:1][np:2]C[RIGHT Black have 2 eyes, he is alive. White is dead.]
;W[oo]CR[oo]
;B[on]CR[on]
;W[nn]CR[nn]
;B[pn]CR[pn]LB[nm:A][no:B]
(;W[no]CR[no]
;B[nm]CR[nm]
;W[oq]CR[oq]
;B[op]CR[op])
(;W[nm]CR[nm]
;B[no]CR[no]
;W[oq]CR[oq]
;B[op]CR[op])
(;W[oq]CR[oq]
;B[op]CR[op]
(;W[nm]CR[nm]
;B[no]CR[no])
(;W[no]CR[no]
;B[nm]CR[nm]))))
(;B[sm]CR[sm]
;W[sn]CR[sn]C[Damn !]
(;B[rn]CR[rn]
;W[rm]CR[rm]C[Seki only. You failed.])
(;B[sl]CR[sl]
;W[rn]CR[rn]C[Black is not connected to the exterior and doesn't have enough space for 2 eyes. You failed.]))
(;B[sn]CR[sn]
;W[rn]CR[rn]
(;B[sl]CR[sl]
;W[sm]CR[sm]C[Ko only. You failed.])
(;B[sm]CR[sm]
;W[sl]CR[sl])))
(;B[fo]CR[fo]C[Black is not dead if he plays correctly.])
(;B[go]CR[go]C[Black can do better.])
(;B[ho]CR[ho]C[Black can do better.]))
