Play the best move. Tenuki at T (N7) for one point whenever it is safe to do so. At each move, only a few choices are available. Please flag and/or comment if there is a mistake. Three players have solved this high-dan rated problem. All three people were ranked mid-kyu.
(
;
AB[ks][kr][kq][lq][lp][mp][np][nq][oq][or][os][pp][po][pn][pm][so][qn][rn]
AW[js][jr][jq][jp][ko][lo][mo][no][oo][op][mr][ps][pr][pq][qq][rq][sq][sr][rp][ro]
C[Play the best move. Tenuki at T (N7) for one point whenever it is safe to do so. At each move, only a few choices are available.][FORCE]
LB[mm:T][rs:A][mq:B][lr:C][ls:D][ms:E]
(; W[mm]; B[ms] C[Black lives. You can do better!])
(; W[rs]; B[ms] C[Black lives. You can do better!])
(; W[mq]; B[ms] C[Black lives. You can do better!])
(; W[lr]; B[ms] (; W[nr]; B[rs] C[Now, Black's group is alive and White's is dead. See continuation for details.])(; W[rs]; B[nr] C[Black lives. You can do better!]))
(
; W[ls]; B[rs] LB[mm:T][ms:A][ns:B][nr:C][mq:D][kp:E] C[Please note that this was not the best move for Black.][FORCE]
(; W[mm]; B[ns] C[Now, Black's group is alive and White's is dead. See continuation for details.])
(; W[ms]; B[qo] C[You're going to lose this capturing race. See continuation for details.])
(
; W[ns]; B[nr] LB[mm:T][kp:A][mq:B][lr:C][ms:D] C[FORCE]
(; W[mm]; B[ms] C[Ko. You can do better!])
(; W[kp]; B[ms] C[Ko. You can do better!])
(; W[mq]; B[ms] C[Ko. You can do better!])
(; W[lr]; B[ms] C[Ko. You can do better!])
(
; W[ms]; B[qo] LB[mm:T][kp:A][lr:B] C[FORCE]
(
; W[mm]; B[qp] LB[nm:T][kp:A][lr:B] C[FORCE]
(; W[nm]; B[sn] C[You're going to lose this capturing race. See continuation for details.])
(; W[kp]; B[sn]; W[lr]; B[mq]; W[ms] C[RIGHT][Yay! You win the capturing race because of the liberty at T4!])
(; W[lr]; B[sn]; W[kp]; B[mq]; W[ms] C[RIGHT][Yay! You win the capturing race because of the liberty of T4!])
)
(; W[kp] C[You could have tenuki'd.])
(; W[lr] C[You could have tenuki'd.])
)
)
(; W[nr]; B[ns] C[Now, Black's group is alive and White's is dead. See continuation for details.])
(; W[mq]; B[ns] C[Now, Black's group is alive and White's is dead. See continuation for details.])
(; W[kp]; B[ns] C[Now, Black's group is alive and White's is dead. See continuation for details.])
)
(; W[ms]; B[rs] C[You're going to lose this capturing race. See continuation in solution tree for details.])
)