Duck Xiangqi: seven engine games

Companion study to the Duck Xiangqi rules article: the seven decisive engine self-play games the article’s sample game was chosen from, in full. Fairy-Stockfish on both sides at 8s per move with opening sampling, so the duck is placed by search rather than by a book. Chapter one is the game the article embeds. Article: /rules/duck-xiangqi

7 章

1. Game 1: Black captures the general on move 60 (the article’s game)120 手

   The game the rules article embeds. The engine eval was still within 1.5 pawns of level as late as ply 63 of 120. Through that stretch Black held the larger edge, peaking at -461. The duck screened a cannon on 30 plies and jammed a horse's leg on 29. Black captures the general wit…

2. Game 2: Black captures the general on move 105210 手

   The engine eval was still within 1.5 pawns of level as late as ply 209 of 210. Through that stretch Black held the larger edge, peaking at -491. The duck screened a cannon on 8 plies and jammed a horse's leg on 78. Black captures the general with e4–d2.

3. Game 3: Black captures the general on move 75150 手

   The engine eval was still within 1.5 pawns of level as late as ply 101 of 150. Through that stretch Black held the larger edge, peaking at -601. The duck screened a cannon on 6 plies and jammed a horse's leg on 56. Black captures the general with e2–e1.

4. Game 4: Black captures the general on move 75150 手

   The engine eval was still within 1.5 pawns of level as late as ply 81 of 150. Through that stretch Black held the larger edge, peaking at -315. The duck screened a cannon on 10 plies and jammed a horse's leg on 62. Black captures the general with e10–e3.

5. Game 5: Red captures the general on move 65129 手

   The engine eval was still within 1.5 pawns of level as late as ply 60 of 129. Through that stretch Red held the larger edge, peaking at 253. The duck screened a cannon on 4 plies and jammed a horse's leg on 65. Red captures the general with g8–e8.

6. Game 6: Red captures the general on move 115229 手

   The engine eval was still within 1.5 pawns of level as late as ply 51 of 229. Through that stretch Black held the larger edge, peaking at -384. The duck screened a cannon on 18 plies and jammed a horse's leg on 82. Red captures the general with d1–d9.

7. Game 7: Red captures the general on move 97193 手

   The engine eval was still within 1.5 pawns of level as late as ply 28 of 193. Through that stretch Red held the larger edge, peaking at 253. The duck screened a cannon on 26 plies and jammed a horse's leg on 73. Red captures the general with e9–e8.