和电脑下象棋
八个难度等级，从入门到很强，最强的对手是皮卡鱼。
象棋：按等级挑选
刚开始下象棋？从第 2 级开始。赢几盘之后，再往上挑战一级。
- 第 1 级 · 象棋引擎等级分 1,637
- 第 2 级 · 从这里开始 · 象棋引擎等级分 1,713
- 第 3 级 · 象棋引擎等级分 1,815
- 第 4 级 · 象棋引擎等级分 1,922
- 第 5 级 · 象棋引擎等级分 1,964
- 第 6 级 · 象棋引擎等级分 2,071
- 第 7 级 · 象棋引擎等级分 2,162
- 第 8 级 · 象棋引擎等级分 2,304
- General Blunder · 最强. A strong engine trying its hardest to lose. It looks at every move and plays the one that is worst for itself, so most turns there is a checkmate or a free piece waiting for you. Find it. Runs on Fairy-Stockfish.
- Pikafish · 最强. 开源，由 Stockfish 改造而来，每步搜索三百万个局面。也可以下揭棋。
揭棋：按等级挑选
刚开始下揭棋？从第 2 级开始。赢几盘之后，再往上挑战一级。
其他棋类
- KataGo. 我们所知最强的斗兽棋引擎：hzyhhzy 的 KataGomo，基于 lightvector 的 KataGo，神经网络来自 Kouza 的 Dandelion 4。
- Misty. Mistboard 自研引擎，下迷雾国际象棋、迷雾象棋、暗棋、斗兽棋和翻翻兽棋。
- Rapfi Level 1. Rapfi plays freestyle Gomoku at level 1 of 8. An open-source engine by dhbloo and the Rapfi contributors.
- Rapfi Level 2. Rapfi plays freestyle Gomoku at level 2 of 8. An open-source engine by dhbloo and the Rapfi contributors.
- Rapfi Level 3. Rapfi plays freestyle Gomoku at level 3 of 8. An open-source engine by dhbloo and the Rapfi contributors.
- Rapfi Level 4. Rapfi plays freestyle Gomoku at level 4 of 8. An open-source engine by dhbloo and the Rapfi contributors.
- Rapfi Level 5. Rapfi plays freestyle Gomoku at level 5 of 8. An open-source engine by dhbloo and the Rapfi contributors.
- Rapfi Level 6. Rapfi plays freestyle Gomoku at level 6 of 8. An open-source engine by dhbloo and the Rapfi contributors.
- Rapfi Level 7. Rapfi plays freestyle Gomoku at level 7 of 8. An open-source engine by dhbloo and the Rapfi contributors.
- Rapfi Level 8. Rapfi plays freestyle Gomoku at level 8 of 8. An open-source engine by dhbloo and the Rapfi contributors.