One Stone · cap-190
The base position is shown first. Each card below changes only one stone — see how a single stone flips the outcome.
Base position · Black wins (11 moves)
25 one-stone variations
Remove stone (0,1)
Black wins (3 moves)
Difficulty shift
Add Black (0,2)
Black wins (2 moves)
Difficulty shift
Add White (0,2)
Draw
Flipped
Add Black (0,3)
Black wins (6 moves)
Difficulty shift
Add White (0,3)
Draw
Flipped
Add Black (1,0)
Black wins (3 moves)
Difficulty shift
Add White (1,0)
Draw
Flipped
Add Black (1,1)
Black wins (2 moves)
Difficulty shift
Add White (1,1)
Draw
Flipped
Add Black (1,2)
Black wins (3 moves)
Difficulty shift
Add White (1,2)
Draw
Flipped
Add Black (1,3)
Black wins (6 moves)
Difficulty shift
Add White (1,3)
Draw
Flipped
Add Black (2,0)
Black wins (5 moves)
Difficulty shift
Add White (2,0)
Draw
Flipped
Add Black (2,1)
Black wins (5 moves)
Difficulty shift
Add White (2,1)
Draw
Flipped
Add Black (2,2)
Black wins (4 moves)
Difficulty shift
Add White (2,2)
Draw
Flipped
Remove stone (2,3)
Black wins (5 moves)
Difficulty shift
Add White (3,0)
Black wins (16 moves)
Difficulty shift
Add Black (3,1)
Black wins (6 moves)
Difficulty shift
Add White (3,1)
Draw
Flipped
Remove stone (3,2)
Black wins (5 moves)
Difficulty shift
Remove stone (3,3)
Draw
Flipped