This thread is for professional games that ended in less than 120 moves. Just to get the ball rolling, I'll post some such games here. These will be great study material, I think.

Here is some more.

Here is a link to a Sensei's page with some references to particularly short games, one 33 moves between Haruyama 5p and Maeda 9p

http://senseis.xmp.net/?ShortestProGameWonByResignation

Particularly short games might be interesting as curiosities but mostly they are short because one of the players made a blunder. How much useful can you learn from a blunder? I'll bet that often a pro might resign and we weaker players wouldn't understand why. We might not even recognize a blunder as such.

Apparently this is the shortest game ever with proper play. There is a shorter game with just 2 moves, but the player left because they were ill, not because they felt that move 2 lost the game.



Perhaps black thought he had the ladder? As would usually be the case? Except that this was a cross game - which black chose to create in the first place.

can be played in this situation, but it obviously requires the ladder. Even so, playing in response to the attachment at is a bit strange for pro. Most would tend to tenuki nowadays, feeling that white has been left over-concentrated by playing 3 stones against only 1. Yilun Yang 7p has a saying about when to tenuki in corner situations: "1 on 1 - okay to tenuki. 2 on 1 - never tenuki. 3 on 1 - always tenuki."

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"You have to walk before you can run. Black 1 was a walking move.
I blushed inwardly to recall the ignorant thoughts that had gone through
my mind before, when I had not realized the true worth of Black 1."
-Kageyama Toshiro on proper moves

Here is a nice one where O Meien misreads a ladder in the Honinbo title match, leading to an early resignation...

http://www.go4go.net/go/games/sgfview/2211

Here is a modern one that occurred between Lee Changho and Choi Cheolhan in the deciding match of the Kuksu tournament. I read that the pros in the study room were shocked at this resignation.

http://www.go4go.net/go/games/sgfview/25458

Collected Selection of Short Weiqi Games of the World (4 volumes)
世界围棋短对局精选（1-4）
ISBN: 978-7-5464-0229-1

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Go is such a beautiful game.