1d6 Adding Dice for Skills

In Swords and Wizardry Whitebox 3rd ed. there are only three classes: Cleric, Fighter, Magic-User. Any playing character regardless of class can succeed at any skill check by rolling a 1 or 2 using a d6 (33%). For every applicable Stat score above 15, an additional d6 is used during the check (56%). Additional d6 dice can be added per GM discretion (for example 3d6 = 70%). Explanation for statistical probability can be found at HERE and HERE

For example a character attempting to pick a lock with a dexterity stat score of 10, would roll one d6 and try for a 1 or 2. If their dexterity stat score was 15 (or higher) they would roll 2d6 and would be successful if either dice was presented a 1 or 2.

STR Athletics, Acrobatics, Wall Climbing, Lifting
DEX Pickpocketing, Sleight of Hand, Backstab*, Stealth*
CON Holding breath, Endurance, Nausea
INT Arcana, History, Investigation, Religion, Discerning traps, Picking a lock, Scribing, Reading
WIS Animal Handling, Insight, Medicine, Perception, Survival, Nature, Tracking
CHR Deception, Intimidation, Performance, Persuasion
3rd, 6th, 9th ↖ add a +1 increase to any stat score at level increments indicated

*Stealth and Backstab is influenced by armour. If wearing Plate mail, all rolls are made with a +2. Chain mail stealth rolls are made at a +1, Leather stealth rolls are made at a +0, and Clothing stealth rolls are made at a -1, to the d6 dice roll. Shields are situational and up for GM discretion.

*Backstab can only occur before the combat initiative roll is made. They are a +4 melee attack after a successful stealth approach. The weapon must be either a dagger or shortsword and inflicts 2d6+1 Damage

*Halfings get to add a d6 to Dexterity skills for every level they obtain. For example a 3rd level halfling fighter gets to roll 3d6 (success on a 1 or 2) for Pickpocketing, Sleight of Hand, Backstab or Stealth. They would roll 4d6 if they had a 15+ in their Dexterity stat. This bonus is also made towards discerning traps.

The following data is made using the
Try it yourself.

1d6 rolled 10 times


2d6 rolled 10 times


3d6 rolled 10 times


4d6 rolled 10 times


5d6 rolled 10 times