3-3 Point

Biodata

Board Position & Function

The 3-3 Point is a corner move placed at the third column and third row of the board; Yu Shao's first documented example is played at the lower-left 3-3 point. 3

• It immediately secures a corner foothold and solid territory. 4
• Its traditional drawback is yielding substantial outside influence and initiative to the opponent. 4 231
• Before Yu Shao's influence, it was generally treated as a situational move for invading beneath an already thick external formation—not as an early opening choice on an open board. 164
• It can be used as a direct corner occupation or as an invasion against an opponent's Star Point formation. 86 236
• Its value depends heavily on the resulting balance between corner territory, outside influence, thickness, thinness, and later whole-board fighting. 185 292

Strategic Characteristics

Traditional Assessment

The opening-stage 3-3 Point was long considered shortsighted and poor. It claimed local territory but was believed to give the opponent an excessively strong outer structure at the most valuable stage of the game. 4

• Standard teaching treated an early 3-3 Point as a mistake serious enough for teachers to punish during instruction. 169 234
• In conventional play, the opponent could block, hane, and stretch, while the invading side had to follow a narrow sequence or risk immediate collapse. 63 164
• Even after its rise, some top players still judged it as playable but slightly inferior to approaches or corner defenses because it ceded initiative too early. 185

Yu Shao's Interpretation

Yu Shao recognizes the 3-3 Point as an iconic post-AI move from his previous life, where it became common enough for the saying “When in doubt, play the 3-3 Point” to circulate. 14

• He initially realizes that the Go world around him has not yet experienced AI-driven changes in opening theory. 14
• He does not use it merely because AI approved it; he personally considers it a full-value move. 185
• Yu Shao attributes his willingness to play it to having no teacher and therefore not being restrained by prevailing Go principles. 180
• His games use the move to force opponents into unfamiliar judgments rather than simply to claim a corner. 190 214

Crawl Variation

Yu Shao's most disruptive development is not the 3-3 Point alone, but the continuation that follows it.

• Rather than ending with the expected hane-and-connect handling, he crawls along the second line and later tenukis. 168 173 187
• The variation leaves apparent weaknesses and thinness, but creates opportunities to invade or dismantle the opponent's thick formation. 168 173
• Against a Three-Star Formation, a later nobi can expose the opponent's large central framework as an illusion. 190
• The sequence forces opponents to reconsider whether “thickness” is truly valuable if it is inefficient, prematurely settled, or vulnerable to attack. 231 292

History

Impact on Go Theory

The 3-3 Point becomes the focal point of a broader challenge to established Go principles.

• Its success forces players to question whether a thick, connected outside structure is automatically advantageous. 231 247
• It shifts attention from abstract central influence toward efficiency, immediate territory, lightness, and the ability to sacrifice stones. 292
• The move's rise changes professional attitudes from rejection, to observation, to practical experimentation. 173 252
• Its acceptance contributes to the wider revision of old joseki and traditional positional judgments. 247 333
• By the time it reaches title matches, it is treated as a legitimate high-level weapon rather than a beginner's blunder. 333 410

Notable Practitioners

• Yu Shao — The principal innovator of the opening-stage 3-3 Point and its crawl-based continuation; repeatedly uses it to challenge conventional positional judgment. 14 164 180
• Su Yiming — Adopts the move during the Ying Jiao Cup, plays it mutually against Yu Shao in the final, and later employs it in major competition. 231 243 410
• Xu Ziqin — Uses the crawl-and-tenuki 3-3 Point variation as White against Wu Zhixuan. 187
• Zhu Huai'an — Plays the 3-3 Point in a top-tier title match, marking its arrival at the highest competitive level. 333

Notable Quotes

“This move from the future!” — Yu Shao before playing the 3-3 Point in the Torch Relay Battle. 164

Trivia

• The 3-3 Point's original appearance causes some spectators to leave early because they believe Yu Shao has made an obvious blunder. 4
• Zheng Qin continues studying the move after losing to Yu Shao, but struggles to understand why the apparently inferior opening succeeds. 63
• The move is used in six consecutive Ying Jiao Cup games across the tournament's opening rounds and semifinals. 236
• Yu Shao later faces a mutual 3-3 Point opening, an experience that reminds him of the AI-era Go of his previous life. 283