m: Diffculty->Difficulty

worlds/checksmate/docs/checksmate_en.md

@@ -25,7 +25,7 @@ You can customize your settings by visiting the [ChecksMate Player Settings Page
 Some examples of certain outcomes are available in [this valid players file](checksmate-example.yaml), which can be used
 to generate a multiplayer multiworld (but should instead be used for your own inspiration).
 
-#### Diffculty and Material via Progression Balancing
+#### Difficulty and Material via Progression Balancing
 
 Increased progression balancing will place your pieces earlier, including pocket pieces and consuls. However, the AI
 makes weaker chess moves for each useful item you acquire, so the game can be much easier with useful and filler items.