Castle Game {O-konomi go}
Tap a point on the board to explore a line from here.
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Each tile is a move you could play next. Tap one to play it: it lands on the board as a numbered stone, and this panel refills with the options that follow. Keep tapping to build a line.
- The Variation panel above lists the moves you've played. Tap any of them to rewind there; tap ← Main line to return to the game.
- Tap Preview on the current move to lay the whole continuation on the board at once — the AI's best line, or the recorded one if the game has it. Tap again to clear.
- Tiles tagged sgf are variations saved in the game record.
- Each tile's corner shows how good the move is — from blue (best) through green and yellow to red — the same color it has on the board. The blue-highlighted tile is the AI's top choice.
- The move actually played in the game isn't shown here — only the alternatives.
New lines you play here are read to 100 visits — quick, but shallow. A deeper read finds longer, stronger continuations.
See deeper analysis plans →This game comes from the GoGoD collection — decades of careful transcription work by T Mark Hall and John Fairbairn — which we share with a daily download allowance at their request. You can keep studying it right here in the meantime, and your allowance resets at midnight UTC.
If you want the whole collection on your own machine today, GoGoD sells it directly:
The Castle Game (Oshirogo, literally "castle Go") was a grand tradition of formal Go matches played before the Tokugawa shoguns during Japan's Edo period (1626-1863). Each year, the heads of Japan's four official Go houses -- Honinbo, Inoue, Yasui, and Hayashi -- would gather at Edo Castle to play ceremonial games in the shogun's presence. These games were played with no komi and the results influenced each house's political standing and government stipend. The Castle Games produced some of Go's most legendary encounters, including the famous "Blood-Vomiting Game" of 1835.
- Date
- 1851-12-09
- Moves
- 151
- Komi
- 0
- Rules
- Japanese (assumed)
- Result
- B+R
- Game record
- GoGoD