Go (Baduk, Weiqi) problems with solutions

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Life-and-death problem (tsumego) 014

14 Black to play Save the two stones in the corner (a stone must be sacrificed to make two eyes)

(;
GM[1]FF[4]VW[]AP[goproblems.ru]
SZ[19]
AB[bc][cc][dd][ed][ec][eb][fe]
AW[db][dc][bd][cd][cf][ea][fb][gc]
C[14
Black to play
Save the two stones in the corner (a stone must be sacrificed to make two eyes)]
;B[da]
TE[1]C[Correct answer]
;W[ca];B[cb];W[da];B[ba];W[fa];B[ab]
C[…The throw-in 1 is the tesuji for making eye shape. Thanks to the sacrifice, Black plays 3 and 5 in sente and then makes two eyes with 7.]
LB[ab:7][fa:6][ba:5][cb:3][ca:2][da:4]
)

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