diff --git a/server/src/lib/score-import/import-types/ir/usc/converter.test.ts b/server/src/lib/score-import/import-types/ir/usc/converter.test.ts
index e0fba6455..823103106 100644
--- a/server/src/lib/score-import/import-types/ir/usc/converter.test.ts
+++ b/server/src/lib/score-import/import-types/ir/usc/converter.test.ts
@@ -16,6 +16,17 @@ t.test("#DeriveLamp", (t) => {
 
 	t.equal(DeriveLamp(d(uscScore, { options: { gaugeType: 0 }, gauge: 0.7 }), logger), "CLEAR");
 
+	t.equal(DeriveLamp(d(uscScore, { options: { gaugeType: 2 }, gauge: 1 }), logger), "FAILED");
+	t.equal(DeriveLamp(d(uscScore, { options: { gaugeType: 2 }, gauge: 0 }), logger), "FAILED");
+	t.equal(
+		DeriveLamp(d(uscScore, { options: { gaugeType: 2 }, gauge: 1, score: 10_000_000 }), logger),
+		"PERFECT ULTIMATE CHAIN"
+	);
+	t.equal(
+		DeriveLamp(d(uscScore, { options: { gaugeType: 2 }, gauge: 1, error: 0 }), logger),
+		"ULTIMATE CHAIN"
+	);
+
 	t.equal(
 		DeriveLamp(d(uscScore, { options: { gaugeType: 1 }, gauge: 0.1 }), logger),
 		"EXCESSIVE CLEAR"
@@ -58,7 +69,7 @@ t.test("#DeriveLamp", (t) => {
 		"ULTIMATE CHAIN"
 	);
 
-	t.throws(() => DeriveLamp(d(uscScore, { options: { gaugeType: 2 } }), logger));
+	t.throws(() => DeriveLamp(d(uscScore, { options: { gaugeType: 3 } }), logger));
 
 	t.end();
 });
diff --git a/server/src/lib/score-import/import-types/ir/usc/converter.ts b/server/src/lib/score-import/import-types/ir/usc/converter.ts
index 7070876bb..c93e3ca6a 100644
--- a/server/src/lib/score-import/import-types/ir/usc/converter.ts
+++ b/server/src/lib/score-import/import-types/ir/usc/converter.ts
@@ -50,6 +50,8 @@ export function DeriveLamp(
 		return scoreDoc.gauge >= 0.7 ? "CLEAR" : "FAILED";
 	} else if (scoreDoc.options.gaugeType === 1) {
 		return scoreDoc.gauge > 0 ? "EXCESSIVE CLEAR" : "FAILED";
+	} else if (scoreDoc.options.gaugeType === 2) {
+		return "FAILED";
 	}
 
 	logger.error(`Could not derive Lamp from Score Document`, { scoreDoc });
diff --git a/server/src/lib/score-import/import-types/ir/usc/parser.ts b/server/src/lib/score-import/import-types/ir/usc/parser.ts
index 1b46c783b..9b46840e5 100644
--- a/server/src/lib/score-import/import-types/ir/usc/parser.ts
+++ b/server/src/lib/score-import/import-types/ir/usc/parser.ts
@@ -18,7 +18,7 @@ const PR_USCIRScore: PrudenceSchema = {
 	late: p.optional(p.isPositiveInteger),
 	combo: p.optional(p.isPositiveInteger),
 	options: {
-		gaugeType: p.isIn(0, 1),
+		gaugeType: p.isIn(0, 1, 2),
 		mirror: "boolean",
 		random: "boolean",
 		autoFlags: p.isInteger,
diff --git a/server/src/server/router/ir/usc/_playtype/types.ts b/server/src/server/router/ir/usc/_playtype/types.ts
index 887242eb0..ca4852d97 100644
--- a/server/src/server/router/ir/usc/_playtype/types.ts
+++ b/server/src/server/router/ir/usc/_playtype/types.ts
@@ -24,7 +24,7 @@ export interface USCClientScore {
 	late: integer | null;
 	combo: integer | null;
 	options: {
-		gaugeType: 0 | 1;
+		gaugeType: 0 | 1 | 2;
 		gaugeOpt: integer;
 		mirror: boolean;
 		random: boolean;