Go (Baduk, Weiqi) problems with solutions

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Refuting a trick play (hamete) problem 047

47 Black to play. White has blocked immediately with the marked move. What should Black play next?

If the variation letters A, B and C are not shown on the board, reload the page or press "next move".

(;
GM[1]FF[4]VW[]AP[goproblems.ru]
SZ[19]
AB[qp][kp][qn][po]
AW[oq][oo][pn][qm]
;W[tt]C[47
Black to play
White has blocked immediately with the marked move. What should Black play next?]
TR[qm]
(;B[op]
TE[1]C[Correct answer
Black 1 is a clever move.
See the continuation]
(;W[np]
C[See the variation]
;B[on];W[pp];B[pm]
C[…Black plays the double atari 3 and takes the stone with 5. Black’s shape is much more powerful than White’s.]
LB[pm:5][pp:4][on:3][np:2]
)
(;W[on];B[np]
C[…If White defends against the double atari with 2, Black takes the ideal point 3. This result is very good for Black.]
LB[np:3][on:2][op:1]
))
(;B[pm]
BM[1]C[Wrong answer
See the continuation]
;W[on];B[ql];W[rm];B[pl];W[qq];B[rn];W[rp]
C[…The atari at 1 is a mistake, even though Black captures two stones with 3 and 5. White plays the elegant squeeze 6 and 8. The result is bad for Black.]
LB[rp:8][rn:7][qq:6][pl:5][rm:4][ql:3][on:2][pm:1]
))

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