Go (Baduk, Weiqi) problems with solutions

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Go (Baduk, Weiqi) problem 0491

Black to play. 491 Capturing race (semeai). Difficulty: Elementary.

(;GM[1]FF[4]SZ[19]AP[goproblems.ru]
AB[ba][eb][fb][dc][bd][cd][dd]
AW[da][cb][db][gb][bc][cc][fc][gc][ee][bf][cf]
C[491
Capturing race (semeai).
Difficulty: Elementary.
]
(;B[ec];W[ad];B[ae];W[ac]
(;B[be];W[de]
(;B[ea];W[ed]
(;B[ab];W[af];B[bb]
C[Black wins.
])
(;B[bb];W[ab]
(;B[aa];W[ca];B[ba];W[af];B[bb];W[aa]
(;B[bb]
C[Black wins.
])
(;B[ba]
C[Black wins.
]))
(;B[ca];W[aa];B[ba];W[af];B[bb];W[ca]
(;B[ba]
C[Black wins.
])
(;B[bb];W[ce];B[ba]
C[Black wins.
]))))
(;B[bb];W[fa];B[ea];W[af]
(;B[ab]
C[Black wins.
])
(;B[ga];W[ed];B[ab]
C[Black wins.
])))
(;B[ea];W[be]
C[Black loses.
])
(;B[bb];W[be]
C[Black loses.
]))
(;B[ac];W[ec]
C[Black loses.
]))

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Go (Baduk, Weiqi) problem 0492 |>
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