(
;
FF[4]
GM[1]
SZ[19]
AP[Jago:Version 5.00]
AB[pp][pq][pr][or][kr][jr][jq][ro][qo][so][qm][pn][on][no][np][mp][lp][kp][ip][nn]
AW[ps][qr][qq][rp][qp][sp][po][oo][op][oq][lq][mq][kq][mr][nq]
TR[pp][pq][pr][or]
C[What is the best endgame play for black?]
GN[goproblem_x02]
(
;
B[ms]
;
W[os]
;
B[lr]
;
W[nr]
C[RIGHT
Black got the maximum profit in sente.]
)
(
;
B[ls]
;
W[os]
LB[ms:a]
C[Black can't play at 'a' in sente.]
)
(
;
B[lr]
;
W[ns]
;
B[ls]
;
W[ms]
LB[nr:a][os:b]
C[White got two extra points of territory at 'a' and 'b'.]
)
(
;
B[ns]
;
W[nr]
TR[ns]
C[Either lose the marked stone or save the marked stone in gote.]
)
(
;
B[nr]
;
W[ns]
C[Black incurred a loss.]
)
(
;
B[os]
;
W[ns]
C[Black incurred a loss.]
)
)