ちょっと進展した、かも

19:42:33 @ core::rl::GameAggregator::aggregate() > 3局終了
19:42:33 @ core::rl::GameAggregator::aggregate() > +---+---+---+---+---+---+---+---+---+
19:42:33 @ core::rl::GameAggregator::aggregate() > |   |   |   |   |   |   |   |   |^杏|
19:42:33 @ core::rl::GameAggregator::aggregate() > +---+---+---+---+---+---+---+---+---+
19:42:33 @ core::rl::GameAggregator::aggregate() > |v歩|v角|   |^圭|v銀|   |   |   |^と|
19:42:33 @ core::rl::GameAggregator::aggregate() > +---+---+---+---+---+---+---+---+---+
19:42:33 @ core::rl::GameAggregator::aggregate() > |v王|v香|v銀|   |   |   |   |v歩|   |
19:42:33 @ core::rl::GameAggregator::aggregate() > +---+---+---+---+---+---+---+---+---+
19:42:33 @ core::rl::GameAggregator::aggregate() > |^銀|v歩|v金|v歩|v金|v歩|v歩|   |v歩|
19:42:33 @ core::rl::GameAggregator::aggregate() > +---+---+---+---+---+---+---+---+---+
19:42:33 @ core::rl::GameAggregator::aggregate() > |^歩|^歩|   |^歩|   |   |   |   |   |
19:42:33 @ core::rl::GameAggregator::aggregate() > +---+---+---+---+---+---+---+---+---+
19:42:33 @ core::rl::GameAggregator::aggregate() > |   |   |   |   |^歩|^歩|^歩|^歩|   |
19:42:33 @ core::rl::GameAggregator::aggregate() > +---+---+---+---+---+---+---+---+---+
19:42:33 @ core::rl::GameAggregator::aggregate() > |vと|   |   |   |^香|^飛|^金|   |   |
19:42:33 @ core::rl::GameAggregator::aggregate() > +---+---+---+---+---+---+---+---+---+
19:42:33 @ core::rl::GameAggregator::aggregate() > |v圭|   |   |   |^銀|^金|^飛|   |   |
19:42:33 @ core::rl::GameAggregator::aggregate() > +---+---+---+---+---+---+---+---+---+
19:42:33 @ core::rl::GameAggregator::aggregate() > |v圭|   |   |   |^香|^王|^角|   |   |
19:42:33 @ core::rl::GameAggregator::aggregate() > +---+---+---+---+---+---+---+---+---+
19:42:33 @ core::rl::GameAggregator::aggregate() > 歩,香,桂,銀,金,角,飛
19:42:33 @ core::rl::GameAggregator::aggregate() >  0, 0, 0, 0, 0, 0, 0,
19:42:33 @ core::rl::GameAggregator::aggregate() >  2, 0, 1, 0, 0, 0, 0,
19:42:33 @ core::rl::GameAggregator::aggregate() > 手番:後手
19:42:33 @ core::rl::GameAggregator::aggregate() > 手数:380
19:42:33 @ core::rl::GameAggregator::aggregate() > 経過時間 : 0m24sec

　第20回選手権時のパラメータ引き継ぎで、序盤〜終盤まで全部を学習対象としても、ちゃんと囲う事の重要性を認識したかもしれません。

　ただ、どこをどういじったって訳でも無いので、何が原因でダメだったのか不明。すっかり忘れていましたが、静止探索1段目の深さを4→8に変更したらこうなりました。

　ついでに、学習初期は囲うけど、学習が進むにつれて囲わなくなっていったりとかもします。

　うーん、もうちょっと頑張らないと。