Tactical Checkers vs SumLock

The rules are simple for this challenging game, but one misstep and it's all over. The computer at its expert level is beatable, but not easily. * You can play a complete game while waiting in line at the grocery store! * You have the choice of playing another human or the computer. * Learn by playing the computer, and then beat your friends convincingly! * The game is quite complex despite the apparent simplicity. * The computer can play at any of four levels from the easily beatable Novice up to the quite potent Expert. Expert is actually beatable, despite being able to search 9 moves ahead. But to win you must play exceptionally well. Pieces move horizontally or vertically (not diagonally) one square at a time, and there is no jumping. If you're a seasoned chess or checker player you will notice related aspects of the tactics in those games to the tactics here. Double attacks play a big role as does the concept of zugzwang (the unpleasant obligation to move). A later version will offer the option of Guru - which plays an absolutely perfect game and cannot be beaten with either color. The app contains a great deal of information about how to play Tactical Checkers well. Tactical Checkers derives from the game of Tac Tickle originally developed by Harry Ruderman in the 1960's. If you like Tactical Checkers, you will definitely like Circular Connect Four also available on the App Store. If you have suggestions or comments on the game, please use the email option included in the app to contact us - we really would love to hear from you! And if you enjoy Tactical Checkers, please leave us a rating or review!

Have you ever wanted a brain teaser that perfectly combines logic, math, and the pure satisfaction of cracking a safe? SumLock is the answer. Most puzzle games rely entirely on vocabulary or repetitive patterns. SumLock is different. It’s a beautifully dark, immersive numbers game where you use deduction and quick arithmetic to break open a 6-digit master code. Crack the Master Code: You have exactly 4 attempts to break the lock. Each row forces you to think strategically, shifting your digits as you hunt for the hidden combination. The Ultimate Math Challenge: There's a catch! Every single guess must consist of 6 completely unique digits, and their total sum must exactly match the Target Sum displayed at the top of your screen. It's a brilliant double-layer challenge for your mind. Color-Coded Clues: Hit "LOCK IN" to submit your combination and see how the vault reacts. Green means the digit is in the perfect spot; Blue means it's part of the code but needs to move; Red means it's not in the code at all. Build Your Winning Streak: Keep your mind sharp and see how many locks you can open in a row. Save your records automatically and push yourself to beat your personal best streak. Why SumLock? Because giving your brain a quick daily workout should be satisfying, crisp, and fun. Complete with clean haptic feedback, daily reminders, and a distraction-free layout, SumLock is the perfect ritual to test your reasoning skills. Download SumLock today—the ultimate challenge to see if you can break the code.