Go (Baduk, Weiqi) problems with solutions

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Refuting a trick play (hamete) problem 038

38 Black to play. White’s extension on the right side is slow but very solid. Black must be careful.

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(;
GM[1]FF[4]VW[]AP[goproblems.ru]
SZ[19]
AB[oq][on]
AW[qp][lp][qn]
;W[tt]C[38
Black to play
White’s extension on the right side is slow but very solid. Black must be careful.]
(;B[po]
TE[1]C[Correct answer
The useful nozoki at 1 keeps the black stones connected.
See the continuation]
;W[qo];B[jp];W[ln];B[ol]
C[…Black can then play 3 and 5.]
LB[ol:5][ln:4][jp:3][qo:2][po:1]
)
(;B[qq]
BM[1]C[Wrong answer
Black 1 looks like a good move, but it does not secure the connection.
See the continuation]
;W[op];B[pq];W[oo]
C[…White plays severely with 2. The result after 4 is good for White.]
LB[oo:4][pq:3][op:2][qq:1]
)
(;B[np]
BM[1]C[Wrong answer
Black 1 guarantees the connection, but it is gote.
See the continuation]
;W[pr]
C[…White takes the ideal point 2. This exchange favours White.]
LB[pr:2][np:1]
))

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