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HARD â€ĸ 9×9 Classic â€ĸ ⏱ī¸ 02:45 â€ĸ 42% Complete
⚡ Quick Play

Jump straight into a classic 9×9 tournament grid at standard medium difficulty with instant cognitive analysis.

🎲 Custom Puzzle

Configure rectangular subgrid geometry (4×4 up to 16×16 Hexadoku), cognitive challenge tiers, and gameplay modes.

📐 Topologies

Instant launch presets for non-square and wide rectangular subgrid geometries:

100%
Offline & Private
28+
Cognitive Metrics
8 Topologies
4×4 to 16×16 Matrix
0 ms
Network Latency
đŸŽ¯ HARD
📐 9×9
🛡ī¸ ASSIST
⏱ī¸ 00:00
❌ 0/3
⚠ī¸ Conflict detected with existing cell

📊 Granular Difficulty & Cognitive Spectrum

Assertion-Solution Link Proportions 45 Deduction Steps
Gentle
18 40%
Moderate
16 35%
Hard
9 20%
Extreme
2 5%
Granular Tier
Hard (Tier 1)
Total Assertions
142
Peak Bottleneck
8 assertions
Avg Assertions/Step
3.45 /step
Score Spread
0.80
Pacing Flow
Balanced

🧠 Step-by-Step Logical Solver

â–ŧ Show Solver
Step 0 / 45
Interactive Play Mode
Click cells and enter numbers with keyboard (1-9) or touch keypad. Press 'Hint' or 'Play Solver' to inspect exact deductive proof steps.

📚 Puzzle Library & Vault

Browse saved solves, step-by-step logic proofs, and replay trajectories.