Editing Brainfugd (section)

===Challenges===
Brainfugd contains six challenges in Challenges mode, which must be completed in sequential order.
#Run any program.
#Create and run a program that outputs 10.
#Create and run a program that outputs 40. Input command is forbidden.
#Create and run a program that takes an input and outputs its double. For example, if the input is 5, the output is 10.
#Create and run a program that takes two inputs and outputs their sum. For example, if the inputs are 6 and 9, the output is 15.
#Create and run a program that takes two inputs and outputs their difference. For example, if the inputs are 1 and 4, the output is 3. Must function regardless of which input is greater.
Two special challenges in Coins mode are available.
#Create and run a program that outputs 'COIN' (or the values 3, 15, 9, and 14 in order). Maximum length of 27 commands; input command is forbidden.
#Create and run a program that outputs 'COIN COIN' (or the values 3, 15, 9, 14, 0, 3, 15, 9, and 14 in order). Input command is forbidden.
To complete Brainfugd, the player must either unlock Coin 1 or complete Challenge 4 before the timer runs out. If the player completes all six main Challenges and at least one Coin challenge is incomplete, they will automatically be taken to the Coins mode. If the player completes all eight challenges, they will remain in Sandbox mode until the timer runs out. After completing the level, an animation plays in which Spu7nix's logo forms ripples on a surface.
{{Togglebox
 |header = Answer key
 |body   = Challenges may have more than one acceptable answer. Commands are grouped into blocks of five for easier reading; ignore spaces when inputting commands.
*'''Challenge 1''': ''Any terminating program''
*'''Challenge 2''': +++++⠀+++++⠀.end
*'''Challenge 3''': ++++[⠀->+++⠀+++++⠀++<]>⠀.end
*'''Challenge 4''': ,[->+⠀+<]>.⠀end
*'''Challenge 5''': ,>,[-⠀<+>]<⠀.end
*'''Challenge 6''': ,>,<[⠀->-[>⠀]<<]>⠀.end
*'''Coin 1''': +++.[⠀->+++⠀++>++⠀+<<]>⠀.>.<-⠀.end
*'''Coin 2''': +++.[⠀->+++⠀++>++⠀+<<]>⠀.>.<-⠀.<.++⠀+.>+.⠀>.<-.
}}