Xuanxuan Qijing · Problem 33
Xuanxuan Qijing · Problem 33. Go, White to play. Study 7 reference plies, try both sides and branch from the replay.
Site coordinates run A–S left to right and 1–19 top to bottom; A1 is the top-left intersection.
Read the position, one decision at a time
Try the position first, then open the notes. They explain measurable changes in the reference, not every possible variation.
Reveal step-by-step explanations
1. White · A18
This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 3 liberties: A17, A19, B18. Diagonal neighbours are not part of the same group. More than one liberty does not by itself establish life; examine the next move.
2. Black · B15
This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 2 liberties: B14, A15. Diagonal neighbours are not part of the same group. More than one liberty does not by itself establish life; examine the next move.
3. White · A16
This move captures 0 stones. After captures, the connected group containing the new stone has 2 stones and 2 liberties: A15, A17. Diagonal neighbours are not part of the same group. More than one liberty does not by itself establish life; examine the next move.
4. Black · A15
This move captures 0 stones. After captures, the connected group containing the new stone has 2 stones and 2 liberties: A14, B14. Diagonal neighbours are not part of the same group. More than one liberty does not by itself establish life; examine the next move.
Understand this position
19 ranks × 19 files · 5 black stones · 13 white stones
Count the liberties of each connected group, not the empty points next to just one stone. Orthogonal contact connects; diagonal contact does not. Try your move, count captures and recount the resulting group’s liberties before comparing the reference.
Read the reference line (7 plies)
Coordinates match this board: letters left to right, row numbers from top to bottom. These are board coordinates, not traditional score notation.
- White
A18 - Black
B15 - White
A16 - Black
A15 - White
B19 - Black
A17 - White
C19