diff --git a/2025/project.clj b/2025/project.clj
index 2f76275..e46d80e 100644
--- a/2025/project.clj
+++ b/2025/project.clj
@@ -9,5 +9,6 @@
                  [org.clojure/math.combinatorics "0.3.0"]
                  [babashka/fs "0.5.23"]
                  [org.babashka/http-client "0.4.22"]
-                 [org.clojure/core.match "1.1.0"]]
+                 [org.clojure/core.match "1.1.0"]
+                 [clj-python/libpython-clj "2.026"]]
   :source-paths ["src" "../shared/clj/src"])
diff --git a/2025/src/day10.clj b/2025/src/day10.clj
new file mode 100644
index 0000000..567adc6
--- /dev/null
+++ b/2025/src/day10.clj
@@ -0,0 +1,94 @@
+(ns day10
+  (:require input-manager
+            [core :refer [dbg]]
+            [clojure.math.combinatorics :as combo]
+            [clojure.string :as str]
+            [libpython-clj2.require :refer [require-python]]
+            [libpython-clj2.python :as py]))
+
+(defn parse-line [line]
+  {:indicators (->> line
+                    (drop 1)
+                    (take-while (complement #{\]}))
+                    (mapv (partial = \#)))
+   :buttons (->> line
+                 (re-seq #"\([\d,]+\)")
+                 (map #(map parse-long (re-seq #"\d+" %))))
+   :joltages (->> line
+                  (drop-while #(not= % \{))
+                  (drop 1)
+                  (take-while #(not= % \}))
+                  (apply str)
+                  (re-seq #"\d+")
+                  (mapv parse-long))})
+
+(def input (map parse-line (input-manager/get-input 2025 10)))
+
+(defn apply-ops [v ops]
+  (reduce (fn [acc op]
+            (reduce #(update %1 %2 not) acc op))
+          v
+          ops))
+
+(defn minimum-button-mashing [{ops :buttons v :indicators}]
+  (loop [i 0
+         cnt 1]
+    (if (>= i (combo/count-combinations ops cnt))
+      (recur 0 (inc cnt))
+      (let [v' (apply-ops v (combo/nth-combination ops cnt i))]
+        (if (every? (complement identity) v')
+          cnt
+          (recur (inc i) cnt))))))
+
+;; part 1
+(apply + (map minimum-button-mashing input))
+
+;; clj-python setup
+(defmacro !   [self method & args] `(py/call-attr ~method ~self ~@args))
+(defmacro py=  [self & args] `(! "__eq__" ~self ~@args))
+(defmacro py>= [self & args] `(! "__ge__" ~self ~@args))
+(defmacro pysubscript  [self & args] `(! "__getitem__" ~self ~@args))
+
+;; z3 stuff
+(require-python :from (str (System/getenv "HOME") "/.local/lib/python3.13/site-packages/") '[z3 :as z3])
+(def Int z3/Int)
+(def Optimize z3/Optimize)
+(def Sum z3/Sum)
+(defn apply-formulas [opt [f & fs]]
+  (when f
+    (! "add" opt f)
+    (recur opt fs)))
+
+;; part 2
+(->> input
+     (map (fn [{:keys [joltages buttons]}]
+            (let [opt (Optimize)
+                  bs (->> buttons
+                          count
+                          range
+                          (map #(Int (str "b" %))))
+                  js (->> joltages
+                          count
+                          range
+                          (map #(Int (str "j" %))))]
+              (apply-formulas opt (for [idx (range (count joltages))]
+                                    (let [jn (nth js idx)
+                                          summation-args (->> buttons
+                                                              (map set)
+                                                              (map-indexed vector)
+                                                              (filter #(contains? (second %) idx))
+                                                              (map first)
+                                                              (map #(nth bs %)))]
+                                      (py= jn (apply Sum summation-args)))))
+              (apply-formulas opt (for [[idx joltage] (map-indexed vector joltages)]
+                                    (let [jn (nth js idx)]
+                                      (py= jn joltage))))
+              (apply-formulas opt (for [b bs] (py>= b 0)))
+              (! "minimize" opt (apply Sum bs))
+              (! "check" opt)
+              (let [model (! "model" opt)]
+                (apply +
+                       (for [b bs]
+                         (! "as_long" (pysubscript model b))))))))
+     (apply +))
+