Study recommended for 15 kyu or stronger.(Show more of this level)
questions the keima shape of white. With this sequence white shows it's not very smart to cut the keima. White sacrifices his keima stone by cutting back and capturing a stone.
White is almost alive now. keeps things difficult for white.
But it also allows white to play the atari of . If the ladder is good, white can ofcourse capture the black stones.
But with white does not even need the ladder to run to the center.