Under Reconstruction
In this problem you have a security system with a linear panel which can hold bicolor chips. At the begining and end of each line is a single circle with a color. The chips must match color end to end. The excercise is to select a random number of color chips hoping they can be arranged to fill the chip slots and in essence open the lock
Select a start and end color and then number of key chips. The system randomly creates 5 times the number of key chips with a guarantee that there is a set which solves the puzzle. After the system shows you the set of chips select the number you wish to try and then press run.