Hi, I have checked CGOS 9x9 black winrate and draw rate.
CGOS 9x9 black winrate http://www.yss-aya.com/cgos2018_03_07_black_winrate.png CGOS 9x9 draw rate http://www.yss-aya.com/cgos2018_03_07_draw_rate.png Following table means 1800 range(both player are (1800 <= rate < 1900)) games are 397, and black winrate is 0.460. I did not plot 1900 - 2100 because few games. It seems black winrate tends to down for strong players. Draw rate clearly tends to up. Maybe over 4300, all games become draw? CGOS from 2018/03/01 to 2018/07/31, total 130922 games rate games B wins Draw W wins Black winrate(draw is 0.5) Draw rate 1800: 397 =( 153/ 59/ 185) 0.460 0.149 1900: 3 =( 2/ 1/ 0) 0.833 0.333 2000: 1 =( 0/ 0/ 1) 0.000 0.000 2100: 6 =( 5/ 0/ 1) 0.833 0.000 2200: 81 =( 34/ 3/ 44) 0.438 0.037 2300: 1259 =( 587/ 77/ 595) 0.497 0.061 2400: 4923 =( 2346/ 409/ 2168) 0.518 0.083 2500: 945 =( 391/ 128/ 426) 0.481 0.135 2600: 107 =( 43/ 24/ 40) 0.514 0.224 2700: 1490 =( 518/ 253/ 719) 0.433 0.170 2800: 3354 =( 970/ 1135/ 1249) 0.458 0.338 2900: 1375 =( 416/ 390/ 569) 0.444 0.284 3000: 181 =( 60/ 31/ 90) 0.417 0.171 3100: 41 =( 11/ 16/ 14) 0.463 0.390 Following are Black first move winrate. It seems Black tengen (5,5) is not best move anymore for players >= 2800. Maybe one reason is Leela Zero 9x9(LZ20_128_65_p3000) only plays (4,5) and never play (5,5). Black first move winrate both player < 2800 both player >= 2800 games black winrate games black winrate (5,5) 41929(59.2) 0.554 5072(36.7) 0.398 (4,4) 11349(16.0) 0.548 2510(18.2) 0.388 (4,5) 7676(10.8) 0.538 5407(39.1) 0.519 (3,4) 2777( 3.9) 0.239 604( 4.4) 0.424 (3,3) 1402( 2.0) 0.212 87( 0.6) 0.282 (3,5) 1353( 1.9) 0.180 111( 0.8) 0.500 ---------------------------------------------- total 70769 13815 http://www.yss-aya.com/cgos/9x9/standings.html Thanks, Hiroshi Yamashita _______________________________________________ Computer-go mailing list Computer-go@computer-go.org http://computer-go.org/mailman/listinfo/computer-go
