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Xuanxuan Qijing · Problem 2

Xuanxuan Qijing · Problem 2. Go, White to play. Study 19 reference plies, try both sides and branch from the replay.

0 pliesWhite starts

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 · N2

This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 3 liberties: N1, N3, M2. 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 · O1

This move captures 0 stones. After captures, the connected group containing the new stone has 2 stones and 3 liberties: N1, P1, O3. 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 · O3

This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 2 liberties: O4, N3. 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 · N3

This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 2 liberties: N4, M3. Diagonal neighbours are not part of the same group. More than one liberty does not by itself establish life; examine the next move.

Continue with the learning path →

Understand this position

19 ranks × 19 files · 4 black stones · 3 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 (19 plies)

Coordinates match this board: letters left to right, row numbers from top to bottom. These are board coordinates, not traditional score notation.

White N2
Black O1
White O3
Black N3
White O4
Black M2
White S2
Black R1
White N4
Black M3
White R4
Black Q4
White Q5
Black R5
White S3
Black S4
White P4
Black R4
White R6

Read the rules with worked examples →