Kill 3-3 invasion in star point small knight enclosure

Black needs to be thick on the outside in order to kill the corner cleanly. Variation A: This requires a favourable ladder. Variation B: White's kosumi doesn't work. Black can kill white unconditionally. Variation C: White can play A to start a two-step ko. If white plays B, white dies unconditionally. Black can connect at O2 and white … Continue reading Kill 3-3 invasion in star point small knight enclosure