I noticed some unusual beharior from Pachi on 6x6 with komi 4. I understand that this is not a format that you are targeting or have tested extensively, but I thought I would mention it in case it is symptomatic of something that may also come into play at other sizes.
I set up the board, played the natural first move at D4, and then called uct_evaluate: > ./pachi -d 0 boardsize 6 = komi 4 = clear_board = play b d4 = uct_evaluate white = A1 0.094 B1 0.156 C1 0.165 D1 0.194 E1 0.143 F1 0.125 A2 0.150 B2 0.204 C2 0.262 D2 0.257 E2 0.223 F2 0.154 A3 0.155 B3 0.261 C3 0.632 D3 0.256 E3 0.254 F3 0.154 A4 0.213 B4 0.252 C4 0.230 F6 0.095 E4 0.277 F4 0.188 A5 0.142 B5 0.242 C5 0.235 D5 0.247 E5 0.208 F5 0.162 A6 0.116 B6 0.135 C6 0.150 D6 0.226 E6 0.152 Everything looks good. The highest-rated reply is C3. But when I call genmove: genmove w = D5 It never returns C3. It returns either D5 or E5. The same problem occurs with komi 3.5.
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