Go Puzzle Sheet #17.1

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Ko fights


. . . O . 1 # # .
. . O . O # . # .
. . O . O O # # #
. . . O . O O O #
O O O O O . . . O
# # # . . C O O A
. . # . # # # # B
. # # # . . # . .
. # . # . . # . .
White played 1, taking a stone. Should Black play A, B or C?

. # O . . . O # .
. # O O . O O # 2
. . # # O . O # .
. # . # O . O # .
. . # # O . O # #
. . . # O . . O O
. . . # # O . O .
. . # # O . O . .
. . # . 1 O . . .
Black took at 1; then White played at 2. Where does Black play now?

. # 1 . O . O . .
# . # O . O . O O
O # # . O . O . .
O O O O O O . 2 .
O O # # # # O O O
. O # . # . # # #
O . O # . . # . .
O O O # # # . # .
. # # # . . . . .
White took at 1; then Black played at 2. Where does White play now?

. . . # . . . . .
. . . # . . . # .
. . . # # # # . .
# # # O O . O # #
O O O O , O O O O
. . . . O . . . .
. O O O . O O O .
. O # # . # # O .
. O # . # . # O .
Where should White play to start a ko, and why?

. . . . # # # O .
. . . # . # O O .
. . # . # O . . .
. . . # # O . O .
. . . . # O . . .
. # . # O O . . .
. . . # O . O . .
. . # . 1 O O . .
. . . # O . . . .
Black just captured at 1. Find a ko threat for White.

1 O O . . . . . .
. # O O . . . O .
# # # O O . O . O
. . . # O # O O #
. . # # O O # # #
. . # . O # . . .
. . # . O # # # .
# # # O O # O O .
. O O O # # # . .
Black just captured at 1. Find a ko threat for White.


This page gives some of the problems from Paul Smith's "Cambridge Go Puzzle Book". Some other pages are listed here.

It is part of the British Go Association web site.





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