The comparison & result
A concealed self-draw can collect from all three opponents, so waiting for it looks attractive. The test compared two seats that refused discard wins while concealed with two seats using the normal playing policy.
The refusing seats took about 46% of the wins, compared with 54% for the normal seats. These are shares of recorded wins, not a 46% chance of winning every hand. The result argues against a blanket habit of refusing wins; it does not settle every match-score or endgame situation.
At your table
- This is about accepting a legal win, not calling a chow or pung to build a hand.
- Consider the rules and match situation before applying any general strategy.
Check your table’s scoring rules before applying the finding. Read the Taiwanese Classic reference.
How it was tested
Published experiment: 100,000 simulated hands under Taiwanese Classic, comparing discard-win refusal while concealed with the normal policy. Seat assignments alternate to reduce position bias.
The players were software policies, not human participants. This report describes the published experiment; it does not establish the best move for every possible hand or opponent.
Results without a published uncertainty interval should be read as point estimates. Similar results do not prove two choices are equivalent.
Read the Lab’s method and limitationsPublished by Hé Fēn Mahjong. Ask about this finding or suggest a correction.