It is written in the rules that there are 10 semfinalists
From all Entries submitted and complete by the deadline, the Judging Panel will select up to ten Semifinalist Entries. Those Semifinalist Entries will be used for one month in a small-scale Pilot Test by young Tanzanian schoolchildren in the vicinity of Dar es Salaam.
But I remember we were told there were 15 semifinalists. So is it a mistake or were the rules changed ?