Xuanxuan Qijing · Problem 47
Xuanxuan Qijing · Problem 47. Go, White to play. Study 9 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 · B10
This move captures 0 stones. After captures, the connected group containing the new stone has 9 stones and 7 liberties: A10, C9, E11, F10, F12, C13, A9. 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 · A12
This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 3 liberties: A11, A13, B12. 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 · A10
This move captures 0 stones. After captures, the connected group containing the new stone has 10 stones and 7 liberties: A9, A11, C9, E11, F10, F12, C13. 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 · A14
This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 2 liberties: A13, A15. 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 · 18 black stones · 11 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 (9 plies)
Coordinates match this board: letters left to right, row numbers from top to bottom. These are board coordinates, not traditional score notation.
- White
B10 - Black
A12 - White
A10 - Black
A14 - White
A11 - Black
A13 - White
B12 - Black
B13 - White
C13