FA-83454 / Card game rule engines / Member archive

A failed nil helps the partner make the contract · case 04

Tricks taken by a failed nil bidder count toward the partner bid.

Member previewVariant 4 · 3 implementations · 8 checks per implementation

Case contract

Input [[bid1, bid2], [tricks1, tricks2], bags_before]. Nil (0) bids score +100 if the player took no tricks, else -100 and their tricks become bags. Other bids combine into a contract made by the non-nil players tricks: made -> 10*bid + 1 per overtrick (overtricks are bags); set -> -10*bid. Every 10 accumulated bags costs 100 and removes 10 bags. Return [score_delta, bags].

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
team score case 2	`[-159, 0]`	`[-160, 0]`	Failed

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