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Shusaku historical game · 1847-01-21

1847-01-21 · Black won by resignation · Shusaku historical game · 1847-01-21. Go, Black to play, 1847-01-21. Study 195 reference plies, try both sides and branch from the replay.

0 pliesBlack 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. Black · C15

This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 4 liberties: C14, C16, B15, D15. 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 · D17

This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 4 liberties: D16, D18, C17, E17. 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 · E3

This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 4 liberties: E2, E4, D3, F3. 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 · Q16

This move captures 0 stones. After captures, the connected group containing the new stone has 1 stones and 4 liberties: Q15, Q17, P16, R16. 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 · 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 (195 plies)

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

  1. Black C15
  2. White D17
  3. Black E3
  4. White Q16
  5. Black Q5
  6. White P3
  7. Black M3
  8. White O4
  9. Black P7
  10. White N5
  11. Black J3
  12. White Q9
  13. Black O17
  14. White P15
  15. Black L17
  16. White D5
  17. Black C4
  18. White C5
  19. Black B4
  20. White C12
  21. Black E16
  22. White E17
  23. Black F16
  24. White F17
  25. Black G16
  26. White G17
  27. Black H16
  28. White H17
  29. Black D9
  30. White F12
  31. Black F5
  32. White I16
  33. Black I15
  34. White E7
  35. Black F9
  36. White E4
  37. Black F3
  38. White G7
  39. Black H9
  40. White H12
  41. Black F6
  42. White E8
  43. Black D11
  44. White D12
  45. Black G11
  46. White G8
  47. Black G12
  48. White G13
  49. Black F11
  50. White F14
  51. Black I7
  52. White G9
  53. Black H11
  54. White I8
  55. Black I9
  56. White I6
  57. Black J7
  58. White H5
  59. Black F4
  60. White H7
  61. Black J8
  62. White K6
  63. Black D16
  64. White H13
  65. Black M5
  66. White K4
  67. Black J6
  68. White J5
  69. Black I4
  70. White I5
  71. Black L5
  72. White K3
  73. Black L7
  74. White H3
  75. Black K15
  76. White I11
  77. Black C7
  78. White J17
  79. Black C17
  80. White C18
  81. Black B17
  82. White B18
  83. Black H14
  84. White J12
  85. Black I2
  86. White K2
  87. Black H4
  88. White M2
  89. Black N3
  90. White N2
  91. Black E12
  92. White E13
  93. Black F13
  94. White D14
  95. Black L12
  96. White N6
  97. Black Q3
  98. White Q2
  99. Black O3
  100. White P4
  101. Black O2
  102. White P2
  103. Black L3
  104. White L4
  105. Black M4
  106. White O1
  107. Black O8
  108. White N8
  109. Black N9
  110. White M8
  111. Black K10
  112. White F12
  113. Black E11
  114. White L8
  115. Black K5
  116. White J4
  117. Black I10
  118. White L11
  119. Black L10
  120. White L13
  121. Black M12
  122. White J14
  123. Black J15
  124. White L14
  125. Black I13
  126. White J13
  127. Black G14
  128. White F13
  129. Black I14
  130. White I12
  131. Black P12
  132. White M7
  133. Black L6
  134. White M16
  135. Black L16
  136. White P10
  137. Black O10
  138. White Q7
  139. Black Q6
  140. White P8
  141. Black O6
  142. White I3
  143. Black H2
  144. White G4
  145. Black B13
  146. White C13
  147. Black B14
  148. White M15
  149. Black M17
  150. White O16
  151. Black O14
  152. White O7
  153. Black N7
  154. White K8
  155. Black K7
  156. White O7
  157. Black K14
  158. White K13
  159. Black N7
  160. White D4
  161. Black D3
  162. White O7
  163. Black O15
  164. White N16
  165. Black N7
  166. White O11
  167. Black P11
  168. White O7
  169. Black P17
  170. White O9
  171. Black P16
  172. White N13
  173. Black M13
  174. White O13
  175. Black P14
  176. White M11
  177. Black K11
  178. White N10
  179. Black N14
  180. White M14
  181. Black M10
  182. White N11
  183. Black K12
  184. White Q15
  185. Black P13
  186. White O12
  187. Black R14
  188. White Q14
  189. Black R13
  190. White Q17
  191. Black Q18
  192. White R18
  193. Black R15
  194. White R16
  195. Black P18
Read the rules with worked examples →

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