24 Math Master vs DC34 CTF

CAN YOU MAKE 24? 24 Math Master is the classic math puzzle game that challenges your brain! Given 4 numbers, use addition, subtraction, multiplication, and division to make exactly 24. Simple to learn, endlessly challenging! HOW TO PLAY - You get 4 numbers - Use + - x / to combine them - Make the result equal 24 - Use ALL 4 numbers exactly once Example: 8, 3, 8, 1 -> (8 / 8 + 1) x 3 x 8 = 24 5 DIFFICULTY LEVELS - Beginner: Perfect for kids learning math - Easy: Build your confidence - Medium: A satisfying challenge - Hard: Push your limits - Expert: Only for true math masters! GAME MODES - Practice: No timer, learn at your own pace - Timed: Race against the clock - Challenge: Consecutive puzzles, increasing difficulty FEATURES - 500+ handcrafted puzzles - Progress tracking and statistics - Hint system when you are stuck - Undo moves anytime - Kid-friendly colorful design - Works completely offline - No account required BENEFITS - Sharpen mental math skills - Develop logical thinking - Improve problem-solving - Train numerical fluency - Great for math competition prep - Fun for ages 6 to 99! PERFECT FOR - Students learning arithmetic - Parents seeking educational games - Teachers for classroom activities - Math enthusiasts and puzzle lovers - Anyone wanting brain exercise! The 24 Game has been used in classrooms worldwide for decades. Now enjoy it anytime, anywhere on your iPhone or iPad! Download now and become a 24 Math Master!

DC34 CTF is a capture-the-flag game built for DEF CON 34. Fourteen channels are dark. Your job is to light them up. Download before the con. The app locks until the convention opens. When the doors open at LVCC West Hall in Las Vegas on August 7, it unlocks and the game begins. FOURTEEN CHANNELS. ONE FINAL TARGET. Every channel is a different kind of puzzle. Some are cryptographic. Some are physical. Some require hardware your phone didn't know it would be using. No hints. No walkthrough. Figure it out. The challenges span XOR ciphers, steganography, DTMF tone analysis, radio direction finding, Bluetooth beacon hunting, geolocation, reverse image search, physical navigation, NFC, speech recognition, and more. Your phone's full sensor suite is in play — camera, microphone, GPS, accelerometer, compass, Bluetooth, NFC. PRIZES The first three players to complete all fourteen channels and claim the final flag receive physical prizes: gold, silver, and copper coins. Finishers four through thirteen get pins. Your rank is permanent — logged to the live leaderboard the moment you scan the hand. THE LEADERBOARD A live in-app finishers board tracks every player who completes the game, ranked by completion time. Watch it fill up in real time. THERE IS MORE The app has secrets that have nothing to do with the flags. Some people will find them. Most won't. REQUIREMENTS iOS 17 or later. Game Center must be enabled — the app authenticates silently at launch. Several challenges require network access, Bluetooth, NFC, location services, camera, and microphone. Grant permissions as the game asks for them or miss the challenges that need them. The app is locked until August 7, 2026 at 9:00 AM PT. Show up at DEF CON 34, LVCC West Hall, Las Vegas. You can play anywhere, but final flag unlocking prizes is only available in-person.