Go (Baduk, Weiqi) problems with solutions

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Direction of play and tesuji problem 009

9 White to play In this standard position from the Chinese fuseki White has to find sabaki in the lower left corner.

(;
GM[1]FF[4]VW[]AP[goproblems.ru]
SZ[19]
AB[bq][cp][em][dn][ip]
AW[cq][ep][en]
C[9
White to play
In this standard position from the Chinese fuseki White has to find sabaki in the lower left corner.]
PL[W]
(;W[bp]
TE[1]C[Correct answer
The crosscut (kiri-chigai) 1 is a good probe (yosu-miru). White then threatens to play A, cutting Black’s position apart.
See the continuation]
LB[co:A]
(;B[co]
C[See the variation]
;W[br];B[dq];W[cr];B[dp];W[bo];B[bn];W[cm];B[cn]
;W[dr];B[eq]
C[…It is important for Black themselves to take the point 2. A line that occurs often in practice follows. White lives in sente, and on top of that Black is open along the lower side (susoaki). White can be satisfied with this exchange.]
LB[eq:12][dr:11][cn:10][cm:9][bn:8][bo:7][dp:6][cr:5][dq:4][br:3][co:2][bp:1]
)
(;B[dp];W[dq];B[br];W[fq];B[bo];W[fn];B[dl];W[ir]
C[…If the /\\ stone stood one line lower, it would be good for \
Black to play butsukari 2. But here suberi 9 rescues White.]
LB[ir:9][dl:8][fn:7][bo:6][fq:5][br:4][dq:3][dp:2][bp:1]
TR[ip]
))
(;W[dq]
BM[1]C[Wrong answer
The draw-back (hiki) 1 is far too heavy.
See the continuation]
;B[br];W[fn];B[dl]
C[…Black’s corner only gets stronger. Finding eye shape remains \
the pressing task for White.]
LB[dl:4][fn:3][br:2][dq:1]
))

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