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diff --git a/exercises/47_methods.zig b/exercises/47_methods.zig
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--- a/exercises/47_methods.zig
+++ /dev/null
@@ -1,94 +0,0 @@
-//
-// Help! Evil alien creatures have hidden eggs all over the Earth
-// and they're starting to hatch!
-//
-// Before you jump into battle, you'll need to know four things:
-//
-// 1. You can attach functions to structs:
-//
-//     const Foo = struct{
-//         pub fn hello() void {
-//             std.debug.print("Foo says hello!\n", .{});
-//         }
-//     }
-//
-// 2. A function that is a member of a struct is a "method" and is
-//    called with the "dot syntax" like so:
-//
-//     Foo.hello();
-//
-// 3. The NEAT feature of methods is the special parameter named
-//    "self" that takes an instance of that type of struct:
-//
-//     const Bar = struct{
-//         number: u32,
-//
-//         pub fn printMe(self: *Bar) void {
-//             std.debug.print("{}\n", .{self.number});
-//         }
-//     }
-//
-// 4. Now when you call the method on an INSTANCE of that struct
-//    with the "dot syntax", the instance will be automatically
-//    passed as the "self" parameter:
-//
-//     const my_bar = Bar{ .number = 2000 };
-//     my_bar.printMe(); // prints "2000"
-//
-// Okay, you're armed.
-//
-// Now, please zap the alien structs until they're all gone or
-// Earth will be doomed!
-//
-const std = @import("std");
-
-// Look at this hideous Alien struct. Know your enemy!
-const Alien = struct {
-    health: u8,
-
-    // We hate this method:
-    pub fn hatch(strength: u8) Alien {
-        return Alien{
-            .health = strength * 5,
-        };
-    }
-
-    // We love this method:
-    pub fn zap(self: *Alien, damage: u8) void {
-        self.health -= if (damage >= self.health) self.health else damage;
-    }
-};
-
-pub fn main() void {
-    // Look at all of these aliens of various strengths!
-    var aliens = [_]Alien{
-        Alien.hatch(2),
-        Alien.hatch(1),
-        Alien.hatch(3),
-        Alien.hatch(3),
-        Alien.hatch(5),
-        Alien.hatch(3),
-    };
-
-    var aliens_alive = aliens.len;
-    var heat_ray_strength: u8 = 7; // We've been given a heat ray weapon.
-
-    // We'll keep checking to see if we've killed all the aliens yet.
-    while (aliens_alive > 0) {
-        aliens_alive = 0;
-
-        // Loop through every alien...
-        for (aliens) |*alien| {
-
-            // *** Zap the Alien Here! ***
-            ???.zap(heat_ray_strength);
-
-            // If the alien's health is still above 0, it's still alive.
-            if (alien.health > 0) aliens_alive += 1;
-        }
-
-        std.debug.print("{} aliens. ", .{aliens_alive});
-    }
-
-    std.debug.print("Earth is saved!\n", .{});
-}