Fudge Dice

Probability [exact] is the probability of the dice summing to that value.
Probability [success] is the probability of the dice summing to that value or a higher value i.e. the probability of success if that dice roll was the target i.e. minimum value for success.

Roll Probability [exact] (/81) Probability [success] (/81)
+4 1 1
+3 4 5
+2 10 15
+1 16 31
0 19 50
-1 16 66
-2 10 76
-3 4 80
-4 1 81
Roll Probability [exact] (%) Probability [success] (%)
+4 1.23 1.23
+3 4.94 6.17
+2 12.34 18.52
+1 19.75 38.27
0 23.46 61.73
-1 19.75 81.48
-2 12.34 93.83
-3 4.94 98.77
-4 1.23 100.00