![]() StartingPoints Referenced by
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5x5 Board
Keywords: Equipment
Capture Go is commonly taught initially on this size board. Even this tiny board can be amazingly instructive.
The book
Erik van der Werf's MIGOS program has Bill: All I saw was the first move. :-( AshleyF: Hummm... yes, they're animated GIFs. I'll post below for reference. Bill: Thanks, Ashley. :-)
Taken from Erik van der Werf's page (with his permission) claiming that Optimal Play For Opening At 2-2
Why not
Erik?: No,
Optimal Play For Opening At 3-2
Cho Chikun's Play At White 6 (Mistake?)
Uno I'd like to defend Cho Chikun. It seems to me that the result was 0-0, and hence better for White. (Territory inside seki groups does not score under Japanese rules).
Uno Thanks for the correction, Bill, but still seems that Cho's sequence is correct and best under Japanese rules. :)
AshleyF Very true! The Erik?: I'm not so sure about that. The analysis published in AGJ (V28:2, 1994) was based on AGA rules. Cho's mistake was reported in AGJ (V29:3, 1995), which explicitly states "Cho confessed that he had completely overlooked this move". The program solves for other openings as well but not nearly as interesting. Center opening results in Black taking the entire board. First play on the edge results in White taking the entire board.
Is the analysis given on that webpage complete? There could be a poorly-placed handicap.
Erik says, 'On my page web-page I only discussed opening moves for the empty board. We did however also test other positions, such as the "Hop" "Step" and "Jump" (from the Super Book of 5x5 Go you referenced). "Jump" is the hardest, our current version of MIGOS requires about 7 seconds to solve it. Unfortunately I don't have the book itself so I only tested these three problems from their webpage. I also tested some poorly-placed handicap openings, such as your two opposite corners, as far as I remember most were lost by black. However, as you say there's a huge number of such positions.' anonymous What about 6x6? Shouldn't that be technically feasible now? Erik? The empty 6x6 board is not yet feasible. However, Migos can solve some positions with 8 (or more) stones on the board (an example is shown in the ICGA article). This is a copy of the living page "5x5 Board" at Sensei's Library. ![]() |