Filter by domain, then dive into short, focused modules in cybersecurity, networking, discrete maths, and logic.
🧭 Difficulty levels
Each badge reflects the depth and challenge of a module.
📗 Beginner
Core ideas & simple examples
Start here if the topic is new to you.
🛠️ Intermediate
Builds on fundamentals
Hands-on tasks with applied reasoning.
⚙️ Advanced
Problem-solving focused
Expect complexity, analysis, and multi-step logic.
🧠 Expert
Celestial-level synthesis
Precision thinking and high-level abstraction.
🛠️ Intermediate
🛡️ Cybersecurity 1 · Foundations & Ethical Hacking
Getting started with ethical hacking.
Overview of penetration testing types, attacker mindsets, and the CIA triad.
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🛠️ Intermediate
🛡️ Cybersecurity 2 · Threats, Firewalls & Defences
Mapping common attack paths.
Explore threat types, basic firewall concepts, and how controls protect infrastructure.
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🛠️ Intermediate
🛡️ Cybersecurity 3 · Encryption Basics & Algorithms
Building an intuition for crypto.
Compare symmetric and asymmetric encryption and see how they protect data in transit and at rest.
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🛠️ Intermediate
🌐 Networking 1 · Networks, OSI Model & Topologies
Understanding how networks fit together.
Explore LANs, WANs, topologies, network devices, and the OSI model as the reference map for traffic flow.
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⚙️ Advanced
🌐 Networking 2 · Subnetting & Broadcast Domains
Designing scalable IPv4 networks.
Learn how subnetting shapes network boundaries, address ranges, and broadcast domains for reliable, scalable designs.
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📗 Beginner
🌐 Networking 3 · IPv4 Addressing & Binary Math
Building number sense for IPv4.
Learn how IPv4 addresses are structured, convert between binary and decimal, and interpret subnet masks.
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🛠️ Intermediate
🌐 Networking 4 · IPv4 Configuration on a Host
Applying addressing on end devices.
Configure IPv4 addresses, subnet masks, and gateways on a host, and interpret address types with bitwise comparison.
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🛠️ Intermediate
🌐 Networking 5 · Exploring Firewalls
Placing firewalls in real networks.
Understand firewall roles, zones, and rule sets, plus where firewalls sit in modern network security architectures.
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🛠️ Intermediate
🌐 Networking 6 · Exploring Switches
Switches as the LAN workhorse.
Learn how switches forward frames, build MAC tables, and use ARP to keep track of devices on the LAN.
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🛠️ Intermediate
🌐 Networking 7 · Exploring Routers
Moving traffic between networks.
Discover how routers forward packets, use routing tables, and enable internet access using NAT and PAT.
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🛠️ Intermediate
📊 Discrete maths 1 · Logic Operators & Truth Tables
Building fluency with propositional logic.
Master AND, OR, NOT, XOR, implication, and equivalence by working with structured truth tables and everyday examples.
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🛠️ Intermediate
📊 Discrete maths 2 · Intro to Sets & Cardinality
Thinking in sets instead of lists.
Understand sets, membership, cardinality, the empty set, and subsets — the foundational language behind databases, logic, and CS theory.
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🛠️ Intermediate
📊 Discrete maths 3 · Set Operations & Tuples
Combining sets to model real problems.
Explore union, intersection, difference, complements, symmetric difference, and tuples — and see how these operations power logic and data modelling.
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🛠️ Intermediate
📊 Discrete maths 4 · Modular Arithmetic & Visualisation
Working with numbers that “wrap around”.
Understand modulus operations, remainders, and congruence — then visualise them using clocks, circles, and patterns that link directly to cryptography.
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📗 Beginner
🧠 Logic puzzle 1 · Pattern Alignment Protocol
A gentle introduction to spatial logic.
Slide numeric tiles into perfect sequence — from 1 to 8 — to reveal the hidden memory fragment.
Practice planning a few moves ahead and spotting efficient paths.
Solve puzzle →
⚙️ Advanced
🧠 Logic puzzle 2 · Drift Alignment Grid
A classic 15-tile challenge with teeth.
Slide 15 numbered tiles into perfect order using careful planning and logical foresight.
Only one arrangement works — and the final square must stay empty.
Solve puzzle →
🧠 Expert
🧠 Logic puzzle 3 · Celestial Drift Grid
A 5×5 climb in spatial reasoning.
Extend your alignment mastery with a 5×5 grid where spatial sequence meets binary balance.
Only the cleanest patterns unlock the final signal hidden in the constellation.
Solve puzzle →
📗 Beginner
🧠 Logic puzzle 4 · Final Drift Protocol
Route-finding with directional constraints.
Tap arrows to shift the path and guide the signal through the flow grid.
Only one sequence of moves threads the path cleanly from start to finish.
Solve puzzle →
⚙️ Advanced
🧠 Logic puzzle 5 · Vortex Drift Grid
A swirling 5×5 path-planning challenge.
Align directional tiles and trace a flawless vector path into the vortex core.
One wrong turn, and the route collapses — precision planning is everything.
Solve puzzle →
🧠 Expert
🧠 Logic puzzle 6 · Celestial Drift Relay
High-signal navigation on a 6×6 grid.
Rotate cosmic vectors, dodge decoy routes, and transmit the signal flawlessly through a 6×6 directional matrix.
Designed for deliberate, methodical reasoning at “expert mode”.
Solve puzzle →
🧠 Expert
✨ Celestial Ant · Systems Insight Assistant
A guided dive into system behaviour, logic, and adaptation — inspired by natural computation.
Explore how patterns form, signals travel, and structures evolve.
Designed for engineers who enjoy thinking both logically and creatively.
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