Two Rolls

Chef is playing a board game, and is currently at position $X$. To win, he needs to reach position $50$. Chef has a pair of $6$-sided dice, which will decide how he moves - he will roll the pair of dice, sum up the numbers on them, and then move exactly that many steps forward. More precisely, if the dice show values of $d_1$ and $d_2$, Chef must move from $X$ to $(X+d_1+d_2)$. However, Chef