LAPLINE
PASSPORTFIELD ACTIVE
DAILY CHALLENGE // 2026-09-26 // CLOSED

Query Builder

Apply a bounded declarative query and return the selected record order. Correct results rank by score, then server-recorded elapsed time.

ONE ATTEMPTSHARED PAYLOADSERVER TIMEDUTC CLOSE 00:00
PUBLISHED SLATE // TWO MONTHS

Daily calendar

ALL TIMES UTC
LIVETRAIN NEXTSCHEDULEDCLOSED

September 2026

30 COURSES
1Ledger 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 COURSES
1Matrix 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

Execute the supplied bounded declarative query.

FOUNDATION // 5 MINUTES

Answer contract

An array of selected numeric record ids in query order.

Race plan

  1. Apply all predicates.
  2. Sort by score descending, then id ascending.
  3. Apply the limit last and return ids.

Common mistakes

  • Limiting before sorting.
  • Using > instead of >=.
  • Sorting all fields ascending.

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

01

Packet Sprint

Return the active rows sorted by id. Correct results rank by score, then server-recorded elapsed time.

02

Precision Run

Return all twelve exact transformations. Correct results rank by score, then server-recorded elapsed time.

03

Tool Slalom

Clear the issued gates in order. Faults reduce score. Correct results rank by score, then server-recorded elapsed time.

04

Constraint Relay

Apply an ordered arithmetic relay and return the final value. Correct results rank by score, then server-recorded elapsed time.

05

Schema Dash

Reshape supplied data into the exact canonical target schema. Correct results rank by score, then server-recorded elapsed time.

06

Diff Hunt

Identify every changed property between two structured documents. Correct results rank by score, then server-recorded elapsed time.

07

Dependency Sort

Return the unique valid execution order for a dependency graph. Correct results rank by score, then server-recorded elapsed time.

08

Signal Filter

Select the records satisfying every supplied filter condition. Correct results rank by score, then server-recorded elapsed time.

09

Route Planner

Find the lowest-cost path through a weighted directed graph. Correct results rank by score, then server-recorded elapsed time.

10

Checksum Chase

Canonicalize supplied fragments and return their SHA-256 digest. Correct results rank by score, then server-recorded elapsed time.

11

Pattern Finish

Infer the stated sequence family and return the missing values. Correct results rank by score, then server-recorded elapsed time.

12

Logic Grid

Resolve a compact unique assignment from fixed and exclusion clues. Correct results rank by score, then server-recorded elapsed time.

13

Compression Run

Run-length encode a token stream using the specified canonical format. Correct results rank by score, then server-recorded elapsed time.

14

Error Triage

Classify synthetic incidents by category and severity using supplied rules. Correct results rank by score, then server-recorded elapsed time.

15

Query Builder

Apply a bounded declarative query and return the selected record order. Correct results rank by score, then server-recorded elapsed time.

16

State Machine Sprint

Apply an event stream to a supplied transition table. Correct results rank by score, then server-recorded elapsed time.

17

Merge Conflict

Merge two revisions under explicit deterministic precedence. Correct results rank by score, then server-recorded elapsed time.

18

Resource Pack

Choose the optimal dependency-valid item set under a capacity limit. Correct results rank by score, then server-recorded elapsed time.

19

Interval Merge

Merge overlapping and touching intervals into one canonical ordered set. Correct results rank by score, then server-recorded elapsed time.

20

Matrix Rotate

Rotate a rectangular matrix ninety degrees clockwise. Correct results rank by score, then server-recorded elapsed time.

21

Ledger Reconcile

Apply a transaction batch and return every reconciled account balance. Correct results rank by score, then server-recorded elapsed time.

22

Temporal Order

Order events by minute, priority, and deterministic id tie-breaks. Correct results rank by score, then server-recorded elapsed time.

23

Circuit Eval

Evaluate a dependent Boolean circuit and return requested gate outputs. Correct results rank by score, then server-recorded elapsed time.

24

Coverage Draft

Find the smallest, lowest-cost deterministic set covering every target. Correct results rank by score, then server-recorded elapsed time.

25

Bracket Audit

Validate nested brackets or identify the exact first structural fault. Correct results rank by score, then server-recorded elapsed time.

26

Coordinate Trace

Execute cardinal moves and report final position plus Manhattan displacement. Correct results rank by score, then server-recorded elapsed time.

27

Frequency Rank

Rank token frequencies under count and lexical tie-breaks. Correct results rank by score, then server-recorded elapsed time.

28

Window Scan

Find the earliest maximum-sum fixed-width contiguous window. Correct results rank by score, then server-recorded elapsed time.

29

Version Resolver

Select the highest semantic version satisfying every supplied constraint. Correct results rank by score, then server-recorded elapsed time.

30

Access Control

Resolve access requests under priority, wildcard, and deny precedence. Correct results rank by score, then server-recorded elapsed time.

31

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": "query-builder",
    "nonce": "tJ070LZLMED3e7KUkP1Bhw-K",
    "query": {
      "limit": 4,
      "order": "score descending, then id ascending",
      "active": true,
      "minimumScore": 47
    },
    "records": [
      {
        "id": 1,
        "score": 19,
        "active": true
      },
      {
        "id": 2,
        "score": 29,
        "active": false
      },
      {
        "id": 3,
        "score": 54,
        "active": true
      },
      {
        "id": 4,
        "score": 8,
        "active": true
      },
      {
        "id": 5,
        "score": 8,
        "active": true
      },
      {
        "id": 6,
        "score": 50,
        "active": false
      },
      {
        "id": 7,
        "score": 12,
        "active": false
      },
      {
        "id": 8,
        "score": 38,
        "active": false
      },
      {
        "id": 9,
        "score": 66,
        "active": true
      },
      {
        "id": 10,
        "score": 23,
        "active": true
      },
      {
        "id": 11,
        "score": 71,
        "active": true
      },
      {
        "id": 12,
        "score": 45,
        "active": true
      }
    ],
    "instruction": "Return the selected record ids in query order"
  },
  "solution": [
    11,
    9,
    3
  ]
}