Tderz/ Random Stuff

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Comments on Teaching

gohu (11/20/08 9:57 AM): Ever since you taught me, I have won a lot games. Thank you so much!

John Tromp (NL 2d, programmer) on difference between Territory & Area Scoring:

Dutch 2 dan. Formerly idle king on NNGS. Connects from work so usually cannot play. Thinks wms is one awesome programmer!

Go Rules in Haskell: [ext] http://www.cwi.nl/~tromp/go/SimpleGo.hs

About scoring methods:

(In what follows, assume that the only passes are the two final ones.)

Area scoring counts empty surrounded + own stones not captured. Territory scoring counts empty surrounded - own stones captured.

Obviously, the difference between these methods equals the difference in number of stones played. That's why, in non-handicap games, the two methods give equal results when white moved last, and 1 more for area when black moved last.

On odd-sized boards, with no sekis, the area score is necessarily odd. E.g. black wins 43-38, or by 5pts, on 9x9. With a komi of 5.5, white would win by 0.5. With territory scoring, white wins by either 0.5 or 1.5. With a komi of 3.5, the winner is black under either method. That's why, with komi 0.5 more than an odd number, it takes a seki to have a different winner under the two scoring methods.


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