和電腦下象棋
八個難度等級，從入門到很強，最強的對手是皮卡魚。
象棋：按等級挑選
剛開始下象棋？從第 2 級開始。贏幾盤之後，再往上挑戰一級。
- 第 1 級 · 象棋引擎等級分 1,637
- 第 2 級 · 從這裡開始 · 象棋引擎等級分 1,713
- 第 3 級 · 象棋引擎等級分 1,815
- 第 4 級 · 象棋引擎等級分 1,922
- 第 5 級 · 象棋引擎等級分 1,964
- 第 6 級 · 象棋引擎等級分 2,071
- 第 7 級 · 象棋引擎等級分 2,162
- 第 8 級 · 象棋引擎等級分 2,304
- General Blunder · 最強. 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 · 最強. 開源，由 Stockfish 改造而來，每步搜尋三百萬個局面。也可以下揭棋。
揭棋：按等級挑選
剛開始下揭棋？從第 2 級開始。贏幾盤之後，再往上挑戰一級。
其他棋類
- KataGo. 我們所知最強的鬥獸棋引擎：hzyhhzy 的 KataGomo，基於 lightvector 的 KataGo，神經網路來自 Kouza 的 Dandelion 4。
- Misty. Mistboard 自研引擎，下迷霧西洋棋、迷霧象棋、暗棋、鬥獸棋和翻翻獸棋。
- 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.