Xuanxuan Qijing Problem 33: White to play and kill
玄玄棋经 · Problem 33 of 347 · First-line placement and sacrifice
Black's corner is small, and the stones around it are White's. Attack from the first line, and do not mind giving up a stone or two on the edge.
How to solve it
This problem is known as 'A Bat' (仙鼠). White attacks the corner from the first line with A18. Black ataris the white stone at B16 with B15, and White extends to A16.
Black blocks at A15 and White plays B19. If Black answers at C19, White connects at A17 and Black has no room for two eyes.
If Black captures two stones with A17 instead, White plays C19. After Black's E18, White's D19, Black's B18 and White's F18, Black takes one more stone with A19, but White captures with E19 and Black still cannot make a second eye.
Main line
- 1. White A18
- 2. Black B15
- 3. White A16
- 4. Black A15
- 5. White B19
- 6. Black C19
- 7. White A17
Solution checked against Sensei's Library.
Play it out on the board
Place the stones yourself and see the refutation when you miss. All the Xuanxuan Qijing problems as quick lessons.