User blog comment:Valderia/Finally got an Akhal-Teke pair!/@comment-38439752-20190519163009

Using t2 (or t3/t4) horses indeed boost the chance for a new breed when crossbreeding. Well done for getting a Teke! If you have any friends in game who have Tekes, breeding a t3 Teke to your t1 will give you a higher chance for a t2 foal, and breeding a t4 to your t2 (once you've got one) will give you two chances for t3 (since you haven't got the t4 certificate) and one for t2, so again you'll have better chances of getting a higher tier foal :)