Shusaku historical game · 1847-09-11
1847-09-11 · Black won by 7 points · Shusaku historical game · 1847-09-11. Go, Black to play, 1847-09-11. Study 326 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. Black · Q4
This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 4 liberties: Q3, Q5, P4, R4. Diagonal neighbours are not part of the same group. More than one liberty does not by itself establish life; examine the next move.
2. White · D3
This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 4 liberties: D2, D4, C3, E3. Diagonal neighbours are not part of the same group. More than one liberty does not by itself establish life; examine the next move.
3. Black · P17
This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 4 liberties: P16, P18, O17, Q17. Diagonal neighbours are not part of the same group. More than one liberty does not by itself establish life; examine the next move.
4. White · O3
This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 4 liberties: O2, O4, N3, P3. 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 · 0 black stones · 0 white stones
Replay a few moves before advancing to the end. At each pause, compare the last position with the next one: which lines opened, which groups connected, and which points became contested? Use “Start new trial here” to investigate an alternative, then return to the reference.
Read the reference line (326 plies)
Coordinates match this board: letters left to right, row numbers from top to bottom. These are board coordinates, not traditional score notation.
- Black
Q4 - White
D3 - Black
P17 - White
O3 - Black
C16 - White
Q15 - Black
P5 - White
N16 - Black
P15 - White
P16 - Black
O16 - White
Q16 - Black
O17 - White
O15 - Black
P14 - White
Q17 - Black
N17 - White
N15 - Black
L17 - White
Q14 - Black
P13 - White
Q12 - Black
N13 - White
L14 - Black
J16 - White
L12 - Black
P10 - White
E17 - Black
N4 - White
M3 - Black
C5 - White
C13 - Black
D15 - White
C10 - Black
D17 - White
C4 - Black
D5 - White
F4 - Black
C8 - White
M4 - Black
M10 - White
G15 - Black
I14 - White
M11 - Black
N10 - White
L10 - Black
L9 - White
K10 - Black
D13 - White
C14 - Black
E16 - White
F16 - Black
E18 - White
G13 - Black
D12 - White
C12 - Black
I12 - White
G11 - Black
K13 - White
M13 - Black
I10 - White
K9 - Black
F12 - White
G12 - Black
E10 - White
G9 - Black
F10 - White
G10 - Black
B10 - White
D9 - Black
D8 - White
E9 - Black
F9 - White
E8 - Black
F8 - White
E7 - Black
B11 - White
C11 - Black
C9 - White
D10 - Black
E4 - White
D14 - Black
E14 - White
F14 - Black
E13 - White
F6 - Black
E3 - White
K16 - Black
K17 - White
E15 - Black
F15 - White
J15 - Black
I15 - White
E15 - Black
F17 - White
F15 - Black
I8 - White
H7 - Black
M5 - White
B5 - Black
B6 - White
B4 - Black
N12 - White
L8 - Black
L5 - White
M9 - Black
N14 - White
I16 - Black
J17 - White
H16 - Black
K14 - White
M14 - Black
L15 - White
N9 - Black
M12 - White
L13 - Black
M15 - White
Q3 - Black
R3 - White
P3 - Black
R2 - White
K3 - Black
P8 - White
R11 - Black
I7 - White
M7 - Black
H6 - White
H8 - Black
I3 - White
O7 - Black
N6 - White
J3 - Black
O8 - White
N7 - Black
P7 - White
I2 - Black
R10 - White
K7 - Black
Q11 - White
R12 - Black
D2 - White
C2 - Black
D4 - White
C3 - Black
F2 - White
C6 - Black
D6 - White
C7 - Black
D7 - White
B7 - Black
B8 - White
A6 - Black
H2 - White
H3 - Black
I4 - White
G2 - Black
G3 - White
H1 - Black
H4 - White
F5 - Black
H2 - White
R4 - Black
R5 - White
H3 - Black
N3 - White
N2 - Black
H2 - White
O6 - Black
L2 - White
M2 - Black
J2 - White
O5 - Black
J5 - White
H3 - Black
K2 - White
L3 - Black
H2 - White
P4 - Black
Q5 - White
H3 - Black
G6 - White
G7 - Black
H2 - White
P18 - Black
Q18 - White
R18 - Black
I1 - White
N5 - Black
C1 - White
B1 - Black
D1 - White
C15 - Black
B16 - White
D16 - Black
G17 - White
E17 - Black
C18 - White
I18 - Black
O19 - White
S10 - Black
S11 - White
O9 - Black
P9 - White
S9 - Black
R9 - White
S8 - Black
Q13 - White
R13 - Black
P12 - White
R7 - Black
N11 - White
K12 - Black
Q19 - White
R19 - Black
P19 - White
G18 - Black
J18 - White
I9 - Black
J6 - White
J12 - Black
I13 - White
F18 - Black
E16 - White
H17 - Black
E17 - White
Q2 - Black
R8 - White
S7 - Black
Q7 - White
R6 - Black
B2 - White
B15 - Black
A15 - White
A14 - Black
A16 - White
R1 - Black
J9 - White
H9 - Black
J8 - White
J10 - Black
J11 - White
F19 - Black
I19 - White
H19 - Black
J19 - White
B12 - Black
A13 - White
B13 - Black
A1 - White
B3 - Black
B14 - White
O10 - Black
O11 - White
A14 - Black
R17 - White
R16 - Black
B14 - White
N19 - Black
O18 - White
A14 - Black
R14 - White
S14 - Black
B14 - White
Q10 - Black
Q9 - White
A14 - Black
S17 - White
S16 - Black
B14 - White
K6 - Black
K5 - White
A14 - Black
S18 - White
S19 - Black
B14 - White
K11 - Black
I11 - White
A14 - Black
I17 - White
H18 - Black
B14 - White
M17 - Black
M16 - White
A14 - Black
Q1 - White
P1 - Black
B14 - White
J13 - Black
J14 - White
A14 - Black
Q6 - White
S12 - Black
B14 - White
A12 - Black
A14 - White
E19 - Black
D19 - White
A10 - Black
N8 - White
A11 - Black
A9 - White
B9 - Black
B10 - White
A7 - Black
S4 - White
R15 - Black
M6 - White
F3 - Black
G5 - White
L1 - Black
K1 - White
M1 - Black
D15 - White
F7 - Black
A3 - White
A4 - Black
D16 - White
S2 - Black
B1 - White
J7 - Black
I6 - White
L7 - Black
A2 - White
L11 - Black
S3 - White
Q1