diff --git a/rules/ok1wc.yaml b/rules/ok1wc.yaml
new file mode 100644
index 0000000..1b2764a
--- /dev/null
+++ b/rules/ok1wc.yaml
@@ -0,0 +1,92 @@
+identifier: OK1WC
+name: OK1WC Memorial Contest (MWC)
+official_rules: https://memorial-ok1wc.cz/index.php?page=rules2l
+upload_url: https://memorial-ok1wc.cz/index.php?page=logs
+upload_format: cabrillo
+duration: 1h
+duration-constraints:
+breaks:
+categories:
+- name: Single OP, Single Band, CW, QRP
+  operator_mode: single
+  power: qrp
+  band_count: single
+  bands: [80m,40m]
+- name: Single OP, Single Band, CW, low
+  operator_mode: single
+  power: low
+  band_count: single
+  bands: [80m,40m]
+- name: Single OP, All Band, CW, QRP
+  operator_mode: single
+  power: qrp
+  band_count: all
+  bands: [80m,40m]
+- name: Single OP, All Band, CW, low
+  operator_mode: single
+  power: low
+  band_count: all
+  bands: [80m,40m]
+overlays:
+modes:
+- cw
+bands:
+- 80m
+- 40m
+properties:
+- name: mwc_multi
+  source: their_call
+  expression: ".*([A-Z0-9])"
+exchange:
+- fields:
+  - [rst]
+  - [serial]
+scoring:
+  qsos:
+  - value: 1
+  qso_band_rule: once_per_band
+  multis: 
+  - property: mwc_multi
+    band_rule: once_per_band
+    value: 1
+examples:
+  - setup:
+      bands: [80m, 40m]
+      modes: [cw]
+      my_exchange:
+    qsos:
+    - their_call: dl1abc
+      their_exchange: [599, 123]
+      band: 80m
+      points: 1
+      multis: 1
+      duplicate: false
+    - their_call: dl1abc
+      their_exchange: [599, 124]
+      band: 40m
+      points: 1
+      multis: 1
+      duplicate: false
+    - their_call: dl1abc
+      their_exchange: [599, 125]
+      band: 40m
+      points: 1
+      multis: 0
+      duplicate: true
+    - their_call: dl1cba
+      their_exchange: [599, 567]
+      band: 40m
+      points: 1
+      multis: 1
+      duplicate: false
+    - their_call: dl2abc
+      their_exchange: [599, 23]
+      band: 40m
+      points: 1
+      multis: 0
+      duplicate: false
+    score:
+      qsos: 5
+      points: 4
+      multis: 3
+      total: 12