Day #31 December 5th, Sinterklaas ( St Nicolas ) in Holland.
Note: #29a turned out to be ko 5 yrs ago. Pls check for a better solution.

edit: logan states there should have been a b connection stone at B11 in #31a. Lets adopt his knowledge.

31a

but what about

_________________
"There are no limits. There are plateaus, but you must not stay there, you must go beyond them. If it kills you, it kills you. A man must constantly exceed his level." -- Bruce Lee

hmm i got nothing

ok redo

Cho Chikun L&D 3-Vol. series have many wrong problems. 31a is like this is most books:

Click Here To Show Diagram Code

[go]$$Bc Normal Problem
$$----------
$$|. O . X O . . . .
$$|X X X X X O . O .
$$|O O O O X O . . .
$$|. . . , X O . . .
$$|. O O X X O . . .
$$|. X X . . O . . .
$$|. O O O O . . . .
$$|. . . . . . . . .
$$|. X X . X . . . .
$$|. . . . . . . . .[/go]

But in Cho Chikun book it's missing these stones:

Click Here To Show Diagram Code

[go]$$Bc Cho Chikun
$$----------
$$|. O . X O . . . .
$$|X X X X X O . O .
$$|O O O O X O . . .
$$|. . . , X O . . .
$$|. O O X X O . . .
$$|. X X . . O . . .
$$|. O O O O . . . .
$$|. . . . . . . . .
$$|. Y Y . Y . . . .
$$|. . . . . . . . .[/go]

Therefore, this normal solution does not work:

Click Here To Show Diagram Code

[go]$$Bc
$$----------
$$|. O . X O . . . .
$$|X X X X X O . O .
$$|O O O O X O . . .
$$|. 2 1 6 X O . . .
$$|4 O O X X O . . .
$$|5 X X 3 . O . . .
$$|7 O O O O . . . .
$$|. . . . . . . . .
$$|. a . . . . . . .
$$|. . . . . . . . .[/go]

Because there is no stone to connect at A. Maybe there is different solution, but I cannot find it.

As for other problems:

Haha wow I wasted so much time trying to find an order that worked.

_________________
"There are no limits. There are plateaus, but you must not stay there, you must go beyond them. If it kills you, it kills you. A man must constantly exceed his level." -- Bruce Lee