World War II lasted from 1939 to 1945, involving over 100 million people from more than 30 countries. The war resulted in an estimated 70-85 million fatalities, making it the deadliest conflict in human history.

Visual Keyboard

`~1!2@3#4$5%6^7&8*9(0)-_=+BackspaceTabQWERTYUIOP[{]}\|CapsLockASDFGHJKL;:'"EnterShiftZXCVBNM,<.>/?ShiftCtrlWinAlt AltWinMenuCtrl
WPM 0
Accuracy 100%
Time 0:00
PROGRESS
20 / 47
35%
NEXT P 0/2
Letter Progression

Unlocked Letters

Theory Progressions

🧠 Choose Your Learning Theory

Your learning theory determines how the system adapts to your typing patterns. Each theory is based on scientific research and optimizes for different learning goals.
🎯 Deliberate Practice
Focuses intensively on your weakest keys. You'll see more words containing difficult letters like J, K, V, Z to build muscle memory where you need it most.
🌊 Flow Theory
Maintains the perfect challenge level. Automatically adjusts word difficulty based on your accuracy to keep you in the optimal learning zone.
📈 Cognitive Load Theory
Gradually increases complexity as you improve. Starts with simple patterns and progressively introduces more challenging combinations.
⚙️ Motor Schema Theory
Builds typing patterns through repetition. Focuses on common letter combinations and chunks like "ing", "tion", "the" until they become automatic.
🤖 AI Hybrid Training BETA
Combines all methods with real-time AI adaptation. Monitors stress levels and adjusts difficulty dynamically. Includes multi-chat simulations.
Learn more about the science →
Settings
Typing Behavior
The cursor stops advancing until the correct key is pressed
Accepts common typing variations (case, quotes)
Detects and fixes when your typing gets offset (e.g., double space or missed character)
Pressing space jumps to the next word
Test Options
Text Appearance
Visual Keyboard
Sound Effects
50%
Content Settings
Letter Progression
Gradually unlock new letters as you improve
Keyboard Layout
Key Zones