FA-83573 / Card game rule engines / Member archive

Reaching exactly 31 is illegal · case 03

Cards that make exactly 31 are refused.

Member previewVariant 3 · 3 implementations · 8 checks per implementation

Case contract

Input [cards_in_current_count, new_card]. Values A=1, T/J/Q/K=10; a count above 31 is "illegal". Points: count 15 -> 2, count 31 -> 2; the new card with the immediately preceding same-rank run scores 2/6/12; the longest trailing sequence of 3+ cards whose ranks are consecutive in any order scores its length. Return [points, count].

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
pegging case 7	`"illegal"`	`[5, 31]`	Failed

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