Jin Jiang’s kos
Problem 1
Black to play.
Interactive Puzzle
Problem 2
Black to play.
Tricky alert
Problem 1
Black to play.
Interactive Puzzle
Problem 2
Black to play.
Interactive Puzzle
Look before you leap
Problem 1
Black to play.
Interactive Puzzle
Problem 2
Black to play.
Interactive Puzzle
Corner tricks
Problem 1
White to play.
Interactive Puzzle
Problem 2
White to play.
Interactive Puzzle
Dangers behind the wall
Problem 1
Black to play.
Interactive Puzzle
Problem 2
Black to play.
Interactive Puzzle
Careful moves in the corner
Problem 1
Black to play.
Interactive Puzzle
Problem 2
Black to play.
Interactive Puzzle
Solve Nyudan’s problems and become a new dan?
Problem 1
Black to play.
Interactive Puzzle
Problem 2
Black to play.
Interactive Puzzle
Pre Alpha Go and AI puzzles
Problem 1
White to play.
Interactive Puzzle
Problem 2
White to play.
Interactive Puzzle
Amazing subtleties
Problem 1
White to play.
Interactive Puzzle
Problem 2
White to play.
Interactive Puzzle
Creating a ko
Problem 1
Black to play.
Interactive Puzzle
Problem 2
Black to play.
Interactive Puzzle
Seigen, but not too hard
Problem 1
Black to play.
Interactive Puzzle
Problem 2
Black to play.
Interactive Puzzle
Exploiting weakness
Problem 1
Black to play.
Interactive Puzzle
Problem 2
White to play.
Interactive Puzzle
Does it live or is it dead?
Problem 1
White to play.
Interactive Puzzle
Problem 2
Black to play.
