diff --git a/day10/index.js b/day10/index.js
new file mode 100644
index 0000000..76319c8
--- /dev/null
+++ b/day10/index.js
@@ -0,0 +1,28 @@
+import { readFileSync } from "fs";
+
+const input = readFileSync("instructions.txt", "utf-8");
+
+let xRegister = 1;
+let cycle = 0;
+let strengthSum = 0;
+
+input.split('\n').forEach(line => {
+    const instruction = line.split(' ');
+
+    switch(instruction[0]) {
+        case "noop":
+            cycle++;
+            if((cycle + 20) % 40 === 0) strengthSum += (cycle * xRegister);
+            break;
+        case "addx":
+            cycle++;
+            if((cycle + 20) % 40 === 0) strengthSum += (cycle * xRegister);
+            cycle++;
+            
+            if((cycle + 20) % 40 === 0) strengthSum += (cycle * xRegister);
+            xRegister += parseInt(instruction[1]);
+            break;
+    }
+});
+
+console.log(strengthSum)
\ No newline at end of file
diff --git a/day10/instructions.txt b/day10/instructions.txt
new file mode 100644
index 0000000..66e9909
--- /dev/null
+++ b/day10/instructions.txt
@@ -0,0 +1,140 @@
+addx 1
+addx 4
+addx -2
+addx 3
+addx 3
+addx 1
+noop
+addx 5
+noop
+noop
+noop
+addx 5
+addx 2
+addx 3
+noop
+addx 2
+addx 4
+noop
+addx -1
+noop
+addx 3
+addx -10
+addx -17
+noop
+addx -3
+addx 2
+addx 25
+addx -24
+addx 2
+addx 5
+addx 2
+addx 3
+noop
+addx 2
+addx 14
+addx -9
+noop
+addx 5
+noop
+noop
+addx -2
+addx 5
+addx 2
+addx -5
+noop
+noop
+addx -19
+addx -11
+addx 5
+addx 3
+noop
+addx 2
+addx 3
+addx -2
+addx 2
+noop
+addx 3
+addx 4
+noop
+noop
+addx 5
+noop
+noop
+noop
+addx 5
+addx -3
+addx 8
+noop
+addx -15
+noop
+addx -12
+addx -9
+noop
+addx 6
+addx 7
+addx -6
+addx 4
+noop
+noop
+noop
+addx 4
+addx 1
+addx 5
+addx -11
+addx 29
+addx -15
+noop
+addx -12
+addx 17
+addx 7
+noop
+noop
+addx -32
+addx 3
+addx -8
+addx 7
+noop
+addx -2
+addx 5
+addx 2
+addx 6
+addx -8
+addx 5
+addx 2
+addx 5
+addx 17
+addx -12
+addx -2
+noop
+noop
+addx 7
+addx 9
+addx -8
+addx 2
+addx -33
+addx -1
+addx 2
+noop
+addx 26
+addx -22
+addx 19
+addx -16
+addx 8
+addx -1
+addx 3
+addx -2
+addx 2
+addx -17
+addx 24
+addx 1
+noop
+addx 5
+addx -1
+noop
+addx 5
+noop
+noop
+addx 1
+noop
+noop
\ No newline at end of file