Igo Hatsuyōron 120 and
Go-Playing Programs (2009 - 2011)
Some Typical Results
Here we are in the F-path ( | ||||||||
Komi | A | B | C | D | E | Y | X |
The table indicates, for these candidate points, and for different Komi, the percentage of games, which were won for Black, after a start at this point, by Many Faces. Please understand negative values of the Komi (Many Faces allows integers only) as additional prisoners given to White beforehand, resulting in an initial disadvantage for Black. The thick line in the table separates the estimated victories from the estimated losses. At the point of change, the corresponding Komi can be interpreted as an estimate of the final result by the program, from White's point of view. Here, a jigo results with six, or seven, prisoners given to White, so the result of the game - without Komi given - can be assumed to be at least six points for Black. It is clearly visible that the program put more points on its shortlist, when it believed, following its own evaluation, that is was behind. The bold and larger font indicates the move, which Many Faces would play next, as Black.
In this range of Komi, there typically also arise two types of moves that are not always useful for further analysis, and therefore must be examined more closely by humans . First, there are moves, which are not correct, like,
The move at |
-11 | 53 | |||||||
-8 | 52 | 51 | ||||||
-5 | 49 | |||||||
-2 | 46 | |||||||
1.5 | 43 | 42 | ||||||
4.5 | 41 | 40 | 41 | 40 | 41 | |||
7.5 | 40 | 39 | 38 | 40 | 39 | |||
10.5 | 38 | 37 | 37 | 38 | 37 | |||
After manually inserting the move sequence from | |||||||
Komi | B | F | G | H | W | V |
The 50% line in the table is lower now. White has apparently lost some points in the upper right corner, compared with what had previously been calculated by the program.
The choice of the moves
Here again, with the computer "feeling" that it is lagging behind, it considers some incorrect moves (like |
-11 | 42 | 42 | 41 | 42 | 42 | ||
-8 | 44 | 44 | 44 | 45 | 45 | ||
-5 | 46 | 48 | 46 | ||||
-2 | 49 | 49 | 48 | 49 | |||
1.5 | 53 | 52 | |||||
4.5 | 57 | ||||||
7.5 | 59 | ||||||
10.5 | 61 | 59 | |||||
For | |||||||||
Komi | J | L | K | F | M | G | H | U-R |
... the program recommends a move at With a larger "perceived" gap we can again see the tendency to play "desperation moves", like |
-11 | 59 | ||||||||
-8 | 57 | ||||||||
-5 | 55 | ||||||||
-2 | 52 | ||||||||
1.5 | 47 | ||||||||
4.5 | 43 | 44 | |||||||
7.5 | 41 | 40 | 40 | 40 | 40 | ||||
10.5 | 38 | 39 | 38 | 38 | 38 | 38 | 38 | 38 |
With |
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Komi | G | F | K | J | V |
If the program "feels" ahead, it plays the safety-first move of In any case, some of the new candidates again gave us the desire to initiate further investigations. |
-11 | 41 | 40 | 41 | |||
-8 | 43 | 42 | 43 | |||
-5 | 45 | 44 | 44 | 45 | ||
-2 | 48 | 48 | 48 | 48 | ||
1.5 | 53 | |||||
4.5 | 57 | |||||
7.5 | 59 | |||||
10.5 | 62 |