Real bomb simulator. Defuse the bomb. Use your brain.
Application simulates a real bomb. For bomb defuses you need to decide logical quest. Code for bomb defuses contains 4 digits. Typing any numbers you will know how many numbers you guessed it, and how many of them in the correct position. Only the smart will survive ... 
                            
                         
                            
                         
                            
                         
                            
                         
                            
                             
                            
                             
                            
                             
                            
                             
                            
                            