That was a great piece of work. The only thing that confused me (at first) is that i was under the usumption when you got a white mark or a blue mark i thought it corrosponded with a position on the board. But i evetually convinced myself "It's just 2 white out of all of them"
Something i would like to see added onto the next version would be not only what other reviewers have said.. such as being able to put the same coloured marble on twice but perhaps a difficulty setting? where the higher difficulties would have more places to position the marble, making 5 or 6... or even ultra hard 7!! lol anywayz once again fantstic game, im glad you put in the work to play it because it was worth it. Cheers