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You locked in $89 for 12-month access. Price goes to $189 on May 5, 2026. Your 12 months start on launch day, not today.
Full Access Opens In
Everything unlocks May 5, 2026. Your 12 months of access start that day.
Every day gets us closer to opening the full library for you.
You’re all set - here’s what to do now
Your $89 pre-order is on file. You don’t need any extra billing steps. Until May 5, use this page as your confirmation + prep hub - your paid library unlocks automatically on launch day.
- Start prep today - Jump to the structured prep plan and free resources (roadmap, practice, YouTube).
- Watch your inbox - We’ll email you when Pro access goes live. Add hello@patternmastery.com to contacts so launch mail doesn’t get buried in spam.
- See the timeline - What happens next (QA week, launch, ongoing updates).
Questions or need help before launch? Email hello@patternmastery.com - we read every Pro member message.
🚀 What Opens on May 5
Everything below is included in your 12-month access. No add-ons. No upsells.
500 Curated Problems
Categorized by pattern, difficulty, and company
500 Video Walkthroughs
Python solutions. Java, JavaScript, and C++ coming soon
Interactive Roadmap
Visual pattern graph with progress tracking
8 Company Paths
Google, Meta, Amazon, Apple, Microsoft, Netflix, Uber, Stripe
BASIC Framework
Breakdown, Assess, Structure, Implement, Check. Science-backed pattern recognition for coding interviews.
Progress Tracking
Streaks, completion rates, pattern mastery
ChatGPT App
AI assistant that understands BASIC Framework
Flash Cards
Pattern recognition cards for quick review
Full DS&A Course
Comprehensive data structures & algorithms
Course modules preview
Introduction to BASIC Framework
How to approach any problem using pattern recognition
Arrays & Hashing
Frequency counting, prefix sums, core array patterns
Two Pointers
Left-right, fast-slow, sorted array patterns
Sliding Window
Fixed and variable window patterns
Stack & Queue
Monotonic stacks, next greater element
Binary Search
Standard, rotated, answer-space binary search
Trees (DFS & BFS)
Recursive traversals, BST operations, level-order
Graphs
BFS, DFS, Union Find, Topological Sort, shortest paths
Dynamic Programming
1D, 2D, knapsack, LIS, interval DP
Backtracking & Greedy
Combinations, permutations, greedy choice patterns
Advanced Topics
Tries, Segment Trees, Bit Manipulation, Math, Design
Company-Specific Paths
Google, Meta, Amazon, Apple, Microsoft, Netflix, Uber, Stripe
💻 500 Problems by Pattern (Preview)
Every problem categorized by pattern, difficulty, and FAANG company. Here's a preview:
+ 492 more problems unlock on May 5, 2026
📋 Your Prep Plan (Start Now)
Don't wait for launch. Build your foundation with free resources. Check off each block as you go.
Progress is saved in this browser only (localStorage). Use Download PDF for an offline copy of all three plans.
Recommended for you —
Arrays + two pointers
Fixes: slow brute-force on pair/range problems, missing when to sort vs hash map, weak subarray boundaries.
Sliding window + hash maps
Fixes: O(n²) substring scans, expand vs shrink confusion, sloppy frequency map updates.
Stack + linked lists
Fixes: bracket problems without a stack model, pointer reversal bugs, missing cycle detection.
Binary search + trees
Fixes: off-by-one BS, missing answer-space BS, shallow tree DFS/BFS templates.
Graphs (BFS / DFS)
Fixes: revisiting nodes, queue vs stack choice, grid vs adjacency-list modeling.
Dynamic programming (1D → 2D)
Fixes: recursion without memo, vague state, bad ordering on grid DP.
Review + timed mock
Fixes: time pressure, skipping BASIC debrief, weak post-mortem on misses.
Foundation: arrays, strings, math
Build speed and clean edge-case habits on Easy classics before the pattern stack gets deep.
Two pointers & sliding window
Own the bulk of array/string optimization questions - know when sorting unlocks two pointers vs. when you need a window.
Stacks, queues & linked lists
Solidify ADT questions that often pair with system-design light rounds or follow-ups.
Trees & binary search
Make tree recursion explainable; pair with BS variants that search an answer space, not just an index.
Graphs & backtracking
Stop exponential blowups - prune with clear state, and color graphs for cycle/topo questions.
Dynamic programming core
Move from memorized solutions to defensible state and transition sentences.
Review + company focus
Align volume with real interview distributions - timing + talk track, not random grind.
Fundamentals
Sustainable daily reps - correct easies beat rushing hards without vocabulary.
Core patterns
Lock in the three highest-ROI patterns at a humane pace.
Data structures
Bridge arrays → trees/heaps so onsite variety doesn’t feel like a different sport.
Graphs & advanced traversals
Avoid the classic mistake of skipping graphs until the final week.
DP + backtracking
One honest hard topic spread over time - not a single cram weekend.
Company-specific prep
Match problem mix to your target’s distribution - not random roulette.
Mocks + weak-patch review
Convert breadth into performance - timing, communication, stress inoculation.
📺 Free Resources (Start Today)
Build your foundation before launch. Everything here is free and available right now:
🗓️ What Happens Next
Pre-order confirmed
Your account is created. Use the free resources and prep plan above to start building your foundation.
Final testing & QA
We're polishing every video, every solution, and every pattern guide for launch day.
Access opens
Full platform access activates automatically. Your 12-month access starts. You'll get an email the moment it's live.
New content continuously
More videos, more company paths, Java/JS/C++ solutions, flash cards. All included in your access.
You’re in — pass the savings on
Share the $89 pre-order
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⚙️ Your Account
Hey — thank you, truly. Choosing Pro before launch is a real vote of confidence, and we don’t take that lightly. We’re heads-down polishing every walkthrough and path so that when May 5 comes, you feel like the $89 was obvious. Until then, chip away at the prep plan in small slices; progress counts even when it’s quiet. We’re glad you’re here.
Your Profile
Billing
After access opens: 3-day refund window.
To request a refund, email hello@patternmastery.com with your order email.