diff --git a/resources/advent_of_code/2023/day/1/input.txt b/resources/advent_of_code/2023/day/1/input.txt
new file mode 100644
index 0000000..9415dc4
--- /dev/null
+++ b/resources/advent_of_code/2023/day/1/input.txt
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diff --git a/src/clj/hub/advent_of_code/2023/day1.clj b/src/clj/hub/advent_of_code/2023/day1.clj
new file mode 100644
index 0000000..2d8ed77
--- /dev/null
+++ b/src/clj/hub/advent_of_code/2023/day1.clj
@@ -0,0 +1,62 @@
+(ns hub.advent-of-code.2023.day1
+  (:require [hub.advent-of-code.util :as util]
+            [clojure.java.io :as io]
+            [clojure.string :as string]))
+
+(def real-inputs (util/read-file (comp parse slurp) (util/input 2023 1)))
+(def sample-inputs-1
+  (parse
+   "1abc2
+pqr3stu8vwx
+a1b2c3d4e5f
+treb7uchet"))
+
+(def sample-inputs-2
+  (parse
+   "two1nine
+eightwothree
+abcone2threexyz
+xtwone3four
+4nineeightseven2
+zoneight234
+7pqrstsixteen"))
+
+
+(defn parse-digit [s]
+  (case s
+    "one"   "1"
+    "two"   "2"
+    "three" "3"
+    "four"  "4"
+    "five"  "5"
+    "six"   "6"
+    "seven" "7"
+    "eight" "8"
+    "nine"  "9"
+    s))
+
+(defn calibration-value [digits]
+  (Integer/parseInt
+   (str (parse-digit (first digits))
+        (parse-digit (last digits)))))
+
+(defn parse [contents]
+  (string/split contents #"\n"))
+
+(defn part1 [inputs]
+  (let [digits (fn [s] (re-seq #"\d" s))]
+    (->> inputs
+         (map (comp calibration-value digits))
+         (reduce +))))
+
+(defn part2 [inputs]
+  (let [digits (fn [s]
+                 (->> s
+                      (re-seq #"(?=(one|two|three|four|five|six|seven|eight|nine|\d))")
+                      (map second)))]
+    (->> inputs
+         (map (comp calibration-value digits))
+         (reduce +))))
+
+(part2 real-inputs)
+(re-matches #"one|eight" "oneight")