Go (Baduk, Weiqi) problems with solutions

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Direction of play and tesuji problem 027

27 Black to play. The right way to run away with /\\ may decide the whole game.

(;
GM[1]FF[4]VW[]AP[goproblems.ru]
SZ[19]
AB[cq][dq][dr][eq][dp][ep][es][fr][fo][dn]
AW[fp][fq][gr][hq][cp][co][do][eo]
C[27
Black to play
The right way to run away with /\\ may decide the whole game.]
TR[fo]
(;B[hp]
TE[1]C[Correct answer
The tsuke suji 1 is a high-level technique.
See the continuation]
(;W[jq]
C[See the variations]
;B[go];W[gq];B[en];W[bm];B[cl]
C[…If White plays 2, Black instantly spreads out from the left into the centre with the continuation up to 7. White will have a hard time.]
LB[cl:7][bm:6][en:5][gq:4][go:3][jq:2][hp:1]
)
(;W[go];B[fn];W[gp];B[gn];W[ho];B[cm]
C[…The atari 2 can be classed as petty hooliganism. After 7 Black takes four stones.]
LB[cm:7][ho:6][gn:5][gp:4][fn:3][go:2][hp:1]
)
(;W[en];B[go];W[gq];B[jq];W[ip];B[io]
C[…And if White rushes to save the stones on the left, the group below comes under fire.]
LB[io:7][ip:6][jq:5][gq:4][go:3][en:2][hp:1]
))
(;B[fn]
BM[1]C[Wrong answer]
;W[cm];B[hp];W[jq]
C[…This 1,3 brings Black nothing but trouble in the centre.]
LB[jq:4][hp:3][cm:2][fn:1]
))

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