1 files changed, 18 insertions, 0 deletions
diff --git a/challenge-227/wambash/raku/ch-1.raku b/challenge-227/wambash/raku/ch-1.raku
new file mode 100644
index 0000000000..eeda37376a
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+++ b/challenge-227/wambash/raku/ch-1.raku
@@ -0,0 +1,18 @@
+#!/usr/bin/env raku
+
+sub friday-thirteenth ($year) {
+    Date.new: :$year, :13day
+    andthen $_, *.later(:1month)  ...^ .later(:1year)
+    andthen .grep: *.day-of-week == 5
+    andthen .elems
+}
+
+multi MAIN (Bool :test($)!) {
+    use Test;
+    is friday-thirteenth(2023), 2;
+    done-testing;
+}
+
+multi MAIN ($year) {
+    say friday-thirteenth $year
+}