diff --git a/petri/src/lib.rs b/petri/src/lib.rs
index 2790799..d58838b 100644
--- a/petri/src/lib.rs
+++ b/petri/src/lib.rs
@@ -186,6 +186,10 @@ impl Rule {
 		self.generate_variants();
 	}
 
+	pub fn variant_count(&self) -> usize {
+		self.variants.len()
+	}
+
 	pub fn generate_variants(&mut self) {
 		self.variants.clear();
 		self.variants.push(self.base.clone());
diff --git a/uscope/src/main.rs b/uscope/src/main.rs
index f14deb2..968ec68 100644
--- a/uscope/src/main.rs
+++ b/uscope/src/main.rs
@@ -271,13 +271,14 @@ fn rule_editor(
 				if ui.checkbox(&mut rule.flip_y, "flip Y").changed() {
 					rule.generate_variants();
 				}
-			});
-			ui.horizontal(|ui| {
 				if ui.checkbox(&mut rule.rotate, "rotate").changed() {
 					rule.generate_variants();
 				}
-				ui.label("fail rate");
+			});
+			ui.horizontal(|ui| {
+				ui.label("fail rate:");
 				ui.add(DragValue::new(&mut rule.failrate));
+				ui.label(format!("variants: {}", rule.variant_count()));
 			});
 			let cells_y = rule.height();
 			let cells_x = rule.width();