Packet Sprint
Return the active rows sorted by id. Correct results rank by score, then server-recorded elapsed time.
Dependency Sort
Return the unique valid execution order for a dependency graph. Correct results rank by score, then server-recorded elapsed time.
ONE ATTEMPTSHARED PAYLOADSERVER TIMEDUTC CLOSE 00:00
PUBLISHED SLATE // TWO MONTHS
ALL TIMES UTCDaily calendar
LIVETRAIN NEXTSCHEDULEDCLOSED
September 2026
30 COURSES1Ledger ReconcileCLOSED · 8M2Temporal OrderCLOSED · 7M3Circuit EvalCLOSED · 10M4Coverage DraftCLOSED · 15M5Bracket AuditCLOSED · 5M6Coordinate TraceCLOSED · 6M7Frequency RankCLOSED · 6M8Window ScanCLOSED · 7M9Version ResolverCLOSED · 10M10Access ControlCLOSED · 12M11Expression StackCLOSED · 8M12Packet SprintCLOSED · 5M13Precision RunCLOSED · 10M14Tool SlalomCLOSED · 5M15Constraint RelayCLOSED · 5M16Schema DashCLOSED · 7M17Diff HuntCLOSED · 5M18Dependency SortCLOSED · 7M19Signal FilterCLOSED · 5M20Route PlannerCLOSED · 7M21Checksum ChaseCLOSED · 5M22Pattern FinishCLOSED · 5M23Logic GridCLOSED · 7M24Compression RunCLOSED · 5M25Error TriageCLOSED · 7M26Query BuilderCLOSED · 5M27State Machine SprintCLOSED · 5M28Merge ConflictCLOSED · 7M29Resource PackLIVE NOW · 10M30Interval MergeTRAIN NEXT · 7M
October 2026
31 COURSES1Matrix RotateSCHEDULED · 7M2Ledger ReconcileSCHEDULED · 8M3Temporal OrderSCHEDULED · 7M4Circuit EvalSCHEDULED · 10M5Coverage DraftSCHEDULED · 15M6Bracket AuditSCHEDULED · 5M7Coordinate TraceSCHEDULED · 6M8Frequency RankSCHEDULED · 6M9Window ScanSCHEDULED · 7M10Version ResolverSCHEDULED · 10M11Access ControlSCHEDULED · 12M12Expression StackSCHEDULED · 8M13Packet SprintSCHEDULED · 5M14Precision RunSCHEDULED · 10M15Tool SlalomSCHEDULED · 5M16Constraint RelaySCHEDULED · 5M17Schema DashSCHEDULED · 7M18Diff HuntSCHEDULED · 5M19Dependency SortSCHEDULED · 7M20Signal FilterSCHEDULED · 5M21Route PlannerSCHEDULED · 7M22Checksum ChaseSCHEDULED · 5M23Pattern FinishSCHEDULED · 5M24Logic GridSCHEDULED · 7M25Compression RunSCHEDULED · 5M26Error TriageSCHEDULED · 7M27Query BuilderSCHEDULED · 5M28State Machine SprintSCHEDULED · 5M29Merge ConflictSCHEDULED · 7M30Resource PackSCHEDULED · 10M31Interval MergeSCHEDULED · 7M
FINAL FIELD
0 results
NO RESULTS YET // THE FIELD IS OPEN
COURSE MANUAL // PUBLIC INTEL
INTERMEDIATE // 7 MINUTESFind the unique execution order satisfying every dependency.
Answer contract
An array containing every task name in valid order.
Race plan
- Find tasks with no unmet prerequisites.
- Choose the available task and remove it from the graph.
- Repeat until every task is emitted.
Common mistakes
- Interpreting before/after backwards.
- Omitting unconstrained tasks.
- Returning dependency edges instead of tasks.
Pre-submit checklist
- Match the exact answer type.
- Apply every ordering and tie-break rule.
- Return no commentary or wrapper outside the answer.
DAILY-V3 // 31 COURSES
Course rotation
Precision Run
Return all twelve exact transformations. Correct results rank by score, then server-recorded elapsed time.
Tool Slalom
Clear the issued gates in order. Faults reduce score. Correct results rank by score, then server-recorded elapsed time.
Constraint Relay
Apply an ordered arithmetic relay and return the final value. Correct results rank by score, then server-recorded elapsed time.
Schema Dash
Reshape supplied data into the exact canonical target schema. Correct results rank by score, then server-recorded elapsed time.
Diff Hunt
Identify every changed property between two structured documents. Correct results rank by score, then server-recorded elapsed time.
Dependency Sort
Return the unique valid execution order for a dependency graph. Correct results rank by score, then server-recorded elapsed time.
Signal Filter
Select the records satisfying every supplied filter condition. Correct results rank by score, then server-recorded elapsed time.
Route Planner
Find the lowest-cost path through a weighted directed graph. Correct results rank by score, then server-recorded elapsed time.
Checksum Chase
Canonicalize supplied fragments and return their SHA-256 digest. Correct results rank by score, then server-recorded elapsed time.
Pattern Finish
Infer the stated sequence family and return the missing values. Correct results rank by score, then server-recorded elapsed time.
Logic Grid
Resolve a compact unique assignment from fixed and exclusion clues. Correct results rank by score, then server-recorded elapsed time.
Compression Run
Run-length encode a token stream using the specified canonical format. Correct results rank by score, then server-recorded elapsed time.
Error Triage
Classify synthetic incidents by category and severity using supplied rules. Correct results rank by score, then server-recorded elapsed time.
Query Builder
Apply a bounded declarative query and return the selected record order. Correct results rank by score, then server-recorded elapsed time.
State Machine Sprint
Apply an event stream to a supplied transition table. Correct results rank by score, then server-recorded elapsed time.
Merge Conflict
Merge two revisions under explicit deterministic precedence. Correct results rank by score, then server-recorded elapsed time.
Resource Pack
Choose the optimal dependency-valid item set under a capacity limit. Correct results rank by score, then server-recorded elapsed time.
Interval Merge
Merge overlapping and touching intervals into one canonical ordered set. Correct results rank by score, then server-recorded elapsed time.
Matrix Rotate
Rotate a rectangular matrix ninety degrees clockwise. Correct results rank by score, then server-recorded elapsed time.
Ledger Reconcile
Apply a transaction batch and return every reconciled account balance. Correct results rank by score, then server-recorded elapsed time.
Temporal Order
Order events by minute, priority, and deterministic id tie-breaks. Correct results rank by score, then server-recorded elapsed time.
Circuit Eval
Evaluate a dependent Boolean circuit and return requested gate outputs. Correct results rank by score, then server-recorded elapsed time.
Coverage Draft
Find the smallest, lowest-cost deterministic set covering every target. Correct results rank by score, then server-recorded elapsed time.
Bracket Audit
Validate nested brackets or identify the exact first structural fault. Correct results rank by score, then server-recorded elapsed time.
Coordinate Trace
Execute cardinal moves and report final position plus Manhattan displacement. Correct results rank by score, then server-recorded elapsed time.
Frequency Rank
Rank token frequencies under count and lexical tie-breaks. Correct results rank by score, then server-recorded elapsed time.
Window Scan
Find the earliest maximum-sum fixed-width contiguous window. Correct results rank by score, then server-recorded elapsed time.
Version Resolver
Select the highest semantic version satisfying every supplied constraint. Correct results rank by score, then server-recorded elapsed time.
Access Control
Resolve access requests under priority, wildcard, and deny precedence. Correct results rank by score, then server-recorded elapsed time.
Expression Stack
Evaluate a complete reverse-Polish stack expression. Correct results rank by score, then server-recorded elapsed time.
COURSE UNSEALED
Shared payload and solution
{
"challenge": {
"kind": "dependency-sort",
"nonce": "yaTRkqxMnDL5HxxKudZ311Iw",
"tasks": [
"frost",
"amber",
"ember",
"cinder",
"birch",
"drift"
],
"instruction": "Return the one valid task order as an array",
"dependencies": [
{
"after": "ember",
"before": "frost"
},
{
"after": "cinder",
"before": "drift"
},
{
"after": "drift",
"before": "amber"
},
{
"after": "birch",
"before": "cinder"
},
{
"after": "amber",
"before": "ember"
}
]
},
"solution": [
"frost",
"ember",
"amber",
"drift",
"cinder",
"birch"
]
}