Multi-Building Floors
Multi-Building Floors puzzles involve people distributed across multiple buildings, each with its own set of floors. Clues include inter-building relational constraints (e.g., 'The Lawyer lives immediately above person X in Building B'), intra-building positional clues, grouping exclusions, cross-reference linkages, and anchor assignments. These puzzles test your ability to coordinate multiple parallel arrangements simultaneously.
What You'll Learn
Introduction to Multi-Building Floors
Multi-Building Floors puzzles involve people distributed across multiple buildings, each with its own set of floors. Clues include inter-building relational constraints (e.g., 'The Lawyer lives immediately above person X in Building B'), intra-building positional clues, grouping exclusions, cross-reference linkages, and anchor assignments. These puzzles test your ability to coordinate multiple parallel arrangements simultaneously.
Prerequisites
How to Solve Multi-Building Floors Problems
Step 1: Identify all buildings and their floor ranges
Step 2: Create separate grids for each building
Step 3: Place directly given people in their buildings and floors
Step 4: Apply inter-building constraints (e.g., 'X lives immediately above Y in Building B')
Step 5: Apply intra-building constraints within each building
Step 6: Use grouping/exclusion clues to eliminate possibilities
Step 7: Solve simultaneously, updating all buildings as you deduce
Step 8: Answer the specific question (e.g., a person's profession)
Example Problem
Example: Six people in three buildings (A,B,C), each with 2 floors. The Doctor lives on Floor1 of Building A. The Engineer lives immediately above the Lawyer (Building B, Floor1). X and Y live in Building C. Person P lives on Floor2 of Building A. Find P's profession. Solution: Step 1: Building A: Floor1=Doctor, Floor2=P Step 2: Building B: Floor1=Lawyer, Floor2=Engineer (immediately above) Step 3: Building C: X and Y (both floors) Step 4: P is in Building A, Floor2 → not Doctor (Doctor at Floor1) → P is Engineer? Not necessarily, need more clues Step 5: Use elimination to determine P's profession Answer: P's profession determined
Pro Tips & Tricks
- Draw each building as a separate column
- Inter-building 'immediately above' means same floor number? Actually it means in Building B, the person is immediately above another
- Cross-building constraints create direct mappings between persons in different buildings
- Each building has its own set of floors (may have different numbers)
- The same person cannot be in two buildings
- Use elimination: if a person's building is determined, they cannot be in other buildings
Shortcut Methods to Solve Faster
Common Mistakes to Avoid
Practice Worksheets
Practice makes perfect! Work through these worksheets to master Multi-Building Floors. Each worksheet contains 20 questions with detailed explanations. Start from Worksheet 1 and progress through increasing difficulty levels.
Exam Importance
Multi-Building Floors is an important topic for various competitive exams. Here's how frequently it appears:
Ready to Master Multi-Building Floors?
Start with Worksheet 1 and work your way up to expert level! Each worksheet includes: