diff --git a/hwe/compare/prepare_gui_parity_conditional.php b/hwe/compare/prepare_gui_parity_conditional.php
new file mode 100644
index 00000000..8e10d6ef
--- /dev/null
+++ b/hwe/compare/prepare_gui_parity_conditional.php
@@ -0,0 +1,90 @@
+<?php
+
+declare(strict_types=1);
+
+use sammo\DB;
+use sammo\Event\Action\OpenNationBetting;
+use sammo\Json;
+use sammo\KVStorage;
+
+if (PHP_SAPI !== 'cli') {
+    http_response_code(404);
+    exit(1);
+}
+
+chdir(dirname(__DIR__));
+require 'lib.php';
+require 'func.php';
+
+$db = DB::db();
+$game = KVStorage::getStorage($db, 'game_env')->getAll();
+$contract = [
+    'scenario' => (int)($game['scenario'] ?? 0),
+    'year' => (int)($game['year'] ?? 0),
+    'month' => (int)($game['month'] ?? 0),
+    'turnterm' => (int)($game['turnterm'] ?? 0),
+    'npcmode' => (int)($game['npcmode'] ?? 0),
+];
+if ($contract !== ['scenario' => 2601, 'year' => 186, 'month' => 1, 'turnterm' => 10, 'npcmode' => 2]) {
+    throw new RuntimeException('Ref GUI parity conditional fixture requires scenario2601 at 186-01.');
+}
+
+$nationBettingCount = (int)$db->queryFirstField(
+    "SELECT COUNT(*) FROM storage
+      WHERE namespace = 'betting'
+        AND JSON_UNQUOTE(JSON_EXTRACT(value, '$.type')) = 'bettingNation'"
+);
+if ($nationBettingCount === 0) {
+    (new OpenNationBetting(4, 5000))->run($game);
+}
+
+$uniqueCount = (int)$db->queryFirstField(
+    "SELECT COUNT(*) FROM ng_auction WHERE type = 'uniqueItem' AND finished = 0"
+);
+if ($uniqueCount === 0) {
+    $generalID = (int)$db->queryFirstField('SELECT no FROM general WHERE npc <= 2 ORDER BY no LIMIT 1');
+    if ($generalID <= 0) {
+        throw new RuntimeException('Ref GUI parity fixture requires at least one general.');
+    }
+    $openDate = new DateTimeImmutable('now');
+    $closeDate = $openDate->modify('+1 day');
+    $detail = [
+        'title' => '손자병법 경매',
+        'hostName' => '청룡',
+        'amount' => 1,
+        'isReverse' => false,
+        'startBidAmount' => 1000,
+        'finishBidAmount' => null,
+        'remainCloseDateExtensionCnt' => 1,
+        'availableLatestBidCloseDate' => $openDate->modify('+2 days')->format('Y-m-d H:i:s'),
+    ];
+    $db->insert('ng_auction', [
+        'type' => 'uniqueItem',
+        'finished' => 0,
+        'target' => 'che_서적_15_손자병법',
+        'host_general_id' => $generalID,
+        'req_resource' => 'inheritPoint',
+        'open_date' => $openDate->format('Y-m-d H:i:s'),
+        'close_date' => $closeDate->format('Y-m-d H:i:s'),
+        'detail' => Json::encode($detail),
+    ]);
+    $auctionID = (int)$db->insertId();
+    $db->insert('ng_auction_bid', [
+        'auction_id' => $auctionID,
+        'owner' => null,
+        'general_id' => $generalID,
+        'amount' => 1000,
+        'date' => $openDate->format('Y-m-d H:i:s'),
+        'aux' => Json::encode(['generalName' => '청룡']),
+    ]);
+}
+
+printf(
+    "Ref conditional capture fixtures: nation_betting=%d unique_auction=%d\n",
+    (int)$db->queryFirstField(
+        "SELECT COUNT(*) FROM storage
+          WHERE namespace = 'betting'
+            AND JSON_UNQUOTE(JSON_EXTRACT(value, '$.type')) = 'bettingNation'"
+    ),
+    (int)$db->queryFirstField("SELECT COUNT(*) FROM ng_auction WHERE type = 'uniqueItem'")
+);