diff --git a/Ideen.md b/Ideen.md
index b6a262f..5d12265 100644
--- a/Ideen.md
+++ b/Ideen.md
@@ -1,7 +1,6 @@
 # MUSS
 
 - api: Config-Liste von Extra-Türchen (kein Buchstabe, nur manuelles Bild)
-- api: Config-Option "Überspringe leere Türchen" (standard ja)
 
 # KANN
 
@@ -21,3 +20,4 @@
 - `alert` durch bulma Komponente(n) ersetzen
 - api: admin Login case sensitivity (username "admin" == "AdMiN")
 - api: `config.solution` - whitespace="IGNORE"->"REMOVE" umbenennen, +Sonderzeichen
+- api: Config-Option "Überspringe leere Türchen" (standard ja)
diff --git a/api/advent22_api/core/config.py b/api/advent22_api/core/config.py
index 39cebb0..a518166 100644
--- a/api/advent22_api/core/config.py
+++ b/api/advent22_api/core/config.py
@@ -34,6 +34,9 @@ class Site(BaseModel):
 
 
 class Puzzle(BaseModel):
+    # Türchen ohne Buchstabe überspringen
+    skip_empty: bool = True
+
     # Tag, an dem der Kalender startet
     begin_day: int = 1
 
diff --git a/api/advent22_api/core/depends.py b/api/advent22_api/core/depends.py
index b95eea8..5a8f26a 100644
--- a/api/advent22_api/core/depends.py
+++ b/api/advent22_api/core/depends.py
@@ -34,23 +34,6 @@ async def get_all_sorted_days(
     return sorted(set(door.day for door in cal_cfg.doors))
 
 
-async def get_all_event_dates(
-    cfg: Config = Depends(get_config),
-    days: list[int] = Depends(get_all_sorted_days),
-) -> EventDates:
-    """
-    Aktueller Kalender-Zeitraum
-    """
-
-    return EventDates(
-        today=date.today(),
-        begin_month=cfg.puzzle.begin_month,
-        begin_day=cfg.puzzle.begin_day,
-        events=days,
-        close_after=cfg.puzzle.close_after,
-    )
-
-
 async def get_all_parts(
     cfg: Config = Depends(get_config),
     days: list[int] = Depends(get_all_sorted_days),
@@ -81,6 +64,27 @@ async def get_all_parts(
     return result
 
 
+async def get_all_event_dates(
+    cfg: Config = Depends(get_config),
+    days: list[int] = Depends(get_all_sorted_days),
+    parts: dict[int, str] = Depends(get_all_parts),
+) -> EventDates:
+    """
+    Aktueller Kalender-Zeitraum
+    """
+
+    if cfg.puzzle.skip_empty:
+        days = [day for day in days if parts[day] != ""]
+
+    return EventDates(
+        today=date.today(),
+        begin_month=cfg.puzzle.begin_month,
+        begin_day=cfg.puzzle.begin_day,
+        events=days,
+        close_after=cfg.puzzle.close_after,
+    )
+
+
 async def get_all_auto_image_names(
     days: list[int] = Depends(get_all_sorted_days),
     images: list[str] = Depends(list_images_auto),
diff --git a/api/advent22_api/routers/admin.py b/api/advent22_api/routers/admin.py
index 45dc83a..aef84ee 100644
--- a/api/advent22_api/routers/admin.py
+++ b/api/advent22_api/routers/admin.py
@@ -36,6 +36,7 @@ class AdminConfigModel(BaseModel):
         clean: str
 
     class __Puzzle(BaseModel):
+        skip_empty: bool
         first: date
         next: date | None
         last: date
@@ -87,6 +88,7 @@ async def get_config_model(
                 "clean": cfg.solution.clean,
             },
             "puzzle": {
+                "skip_empty": cfg.puzzle.skip_empty,
                 "first": event_dates.first,
                 "next": event_dates.next,
                 "last": event_dates.last,
diff --git a/ui/src/components/admin/ConfigView.vue b/ui/src/components/admin/ConfigView.vue
index eb0e9e4..dad5218 100644
--- a/ui/src/components/admin/ConfigView.vue
+++ b/ui/src/components/admin/ConfigView.vue
@@ -68,6 +68,10 @@
               <dd class="is-family-monospace">
                 "{{ admin_config_model.puzzle.seed }}"
               </dd>
+
+              <dt>Leere Türchen</dt>
+              <dd v-if="admin_config_model.puzzle.skip_empty">Überspringen</dd>
+              <dd v-else>Anzeigen</dd>
             </dl>
           </div>
         </div>
@@ -195,6 +199,7 @@ export default class extends Vue {
       clean: "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
     },
     puzzle: {
+      skip_empty: true,
       first: "2023-12-01",
       next: "2023-12-01",
       last: "2023-12-24",
@@ -229,7 +234,7 @@ export default class extends Vue {
 
   public fmt_puzzle_date(name: keyof AdminConfigModel["puzzle"]): string {
     const iso_date = this.admin_config_model.puzzle[name];
-    if (iso_date === null) return "-";
+    if (!(typeof iso_date == "string")) return "-";
 
     return DateTime.fromISO(iso_date).toLocaleString(DateTime.DATE_SHORT);
   }
diff --git a/ui/src/lib/api.ts b/ui/src/lib/api.ts
index f7a1874..aebd642 100644
--- a/ui/src/lib/api.ts
+++ b/ui/src/lib/api.ts
@@ -7,6 +7,7 @@ export interface AdminConfigModel {
     clean: string;
   };
   puzzle: {
+    skip_empty: boolean;
     first: string;
     next: string | null;
     last: string;