FA-94725 / Exam timetabling constraints / Member archive

Day-slot restriction applies only to the named slot · case 05

A Friday-afternoon restriction still allows a Friday-evening exam.

Member previewVariant 5 · 3 implementations · 8 checks per implementation

Case contract

sits [student, exam, period]; periods index -> [weekday 0=Mon..6=Sun, slot am/pm/eve]; avoid student -> rules "day" (whole day) or "day-slot" (that slot and later slots that day). Each sitting matching any rule is reported once as [student, exam, period]; return rows sorted.

Why this case matters

Religious-observance and other unavailability constraints are student-specific hard constraints.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
regression: slot onward 1	`[]`	`[["s2", "CHEM120", 0]]`	Failed

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