diff --git a/src/components/Instructions.tsx b/src/components/Instructions.tsx
index c4ab2aa..d6919e2 100644
--- a/src/components/Instructions.tsx
+++ b/src/components/Instructions.tsx
@@ -20,7 +20,9 @@ export default function Instructions() {
           <li>eq</li>
           <li>ne</li>
           <li>gt</li>
+          <li>ge</li>
           <li>lt</li>
+          <li>le</li>
           <li>add</li>
           <li>sub</li>
           <li>+/- prefix</li>
diff --git a/src/cpu.ts b/src/cpu.ts
index f9eb692..acc08f8 100644
--- a/src/cpu.ts
+++ b/src/cpu.ts
@@ -51,6 +51,10 @@ export function parse(code: string): Instruction[] {
       case 'add':
       case 'sub':
       case 'drop':
+      case 'eq':
+      case 'ne':
+      case 'gt':
+      case 'lt':
         output.push({cond: cond as Condition, op: operator});
     }
   }
@@ -91,6 +95,30 @@ export function execute(instruction: Instruction, stack: number[]): number[] {
       const [a, b, ...rest] = stack;
       return [a - b, ...rest];
     }
+    case 'eq': {
+      const [a, b, ...rest] = stack;
+      return [a === b ? 1 : 0, ...rest];
+    }
+    case 'ne': {
+      const [a, b, ...rest] = stack;
+      return [a !== b ? 1 : 0, ...rest];
+    }
+    case 'gt': {
+      const [a, b, ...rest] = stack;
+      return [a > b ? 1 : 0, ...rest];
+    }
+    case 'ge': {
+      const [a, b, ...rest] = stack;
+      return [a >= b ? 1 : 0, ...rest];
+    }
+    case 'lt': {
+      const [a, b, ...rest] = stack;
+      return [a < b ? 1 : 0, ...rest];
+    }
+    case 'le': {
+      const [a, b, ...rest] = stack;
+      return [a <= b ? 1 : 0, ...rest];
+    }
     default:
       return stack;
   }