Mission #19. In this simple mission of the 6 stages we will learn how to solve the fifteen puzzle, if you\'ve never dealt with. The goal of the game in fifteen - to build all the numbers in order left-to-right top-to-bottom. In the lower right corner should be empty cage. Start with a simple 3x3 and 5x5 are done.
20
Unlike 
2
?
00:20
00:12
? 00:20 00:12
? 00:50 00:35
? 00:50 00:35
? 01:00 00:45
? 01:55 01:35
2018-11-19 23:32 
6
209 
56 
17 
20
2019-02-14 17:10
1
0
