FA-83369 / Card game rule engines / Member archive

Unbroken-hearts lead restriction also forbids the queen of spades · case 04

A player cannot lead QS before hearts are broken.

Member previewVariant 4 · 3 implementations · 8 checks per implementation

Case contract

Input [hand, trick_so_far, hearts_broken, first_trick]. Leading: on the first trick the holder of 2C must lead it; hearts may not be led before they are broken unless the hand is all hearts (QS may be led). Following: follow the led suit if possible; on the first trick a void player may not discard hearts or QS unless nothing else is held. Return legal cards in hand order.

Why this case matters

Card-game engines, scoring apps and online tables apply this rule automatically on every hand.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
legal plays case 7	`["AD"]`	`["QS", "AD"]`	Failed

MEMBER ARCHIVE

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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