diff --git a/AoC_2025.Runner/Program.cs b/AoC_2025.Runner/Program.cs
index 7ae70c1..df499a9 100644
--- a/AoC_2025.Runner/Program.cs
+++ b/AoC_2025.Runner/Program.cs
@@ -4,7 +4,7 @@ using System.Globalization;
 using AoC_2025;
 
 var rootPath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
-var day01 = new Day01();
+/*var day01 = new Day01();
 string day01Path = @$"{rootPath}\AoC-PuzzleInputs\2025\Prod\day01.txt";
 Console.WriteLine(day01.SolvePart1(day01Path));
 Console.WriteLine(day01.SolvePart2(day01Path));
@@ -56,4 +56,10 @@ var day09 = new Day09();
 string day09Path =  @$"{rootPath}\AoC-PuzzleInputs\2025\Prod\day09.txt";
 Console.WriteLine(day09.SolvePart1(day09Path));
 Console.WriteLine(day09.SolvePart2(day09Path));
+Console.WriteLine();*/
+
+var day10 = new Day10();
+string day10Path =  @$"{rootPath}\AoC-PuzzleInputs\2025\Prod\day10.txt";
+Console.WriteLine(day10.SolvePart1(day10Path));
+Console.WriteLine(day10.SolvePart2(day10Path));
 Console.WriteLine();
\ No newline at end of file
diff --git a/AoC_2025.Tests/Day10Test.cs b/AoC_2025.Tests/Day10Test.cs
new file mode 100644
index 0000000..41086b4
--- /dev/null
+++ b/AoC_2025.Tests/Day10Test.cs
@@ -0,0 +1,47 @@
+using AdvenOfCode.Contracts;
+
+namespace AoC_2025.Tests;
+
+public class Day10Test
+{
+    private IPuzzleSolver<long> _sut;
+    private static readonly string rootPath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
+    private readonly string TestInputPath = @$"{rootPath}\AoC-PuzzleInputs\2025\Test\day10.txt";
+    private readonly string ProdInputPath = @$"{rootPath}\AoC-PuzzleInputs\2025\Prod\day10.txt";
+    
+    public Day10Test()
+    {
+        _sut = new Day10();
+    }
+    [Fact]
+    public void Part01_Test_equals_7()
+    {
+        var actual = _sut.SolvePart1(TestInputPath);
+        
+        Assert.Equal(7, actual);
+    }
+    
+    [Fact]
+    public void Part01_Prod_equals_500()
+    {
+        var actual = _sut.SolvePart1(ProdInputPath);
+        
+        Assert.Equal(500, actual);
+    }
+    
+    [Fact]
+    public void Part02_Test_equals_24()
+    {
+        var actual = _sut.SolvePart2(TestInputPath);
+        
+        Assert.Equal(24, actual);
+    }
+    
+    [Fact]
+    public void Part02_Prod_equals_1568849600()
+    {
+        var actual = _sut.SolvePart2(ProdInputPath);
+        
+        Assert.Equal(1568849600, actual);
+    }
+}
\ No newline at end of file
diff --git a/AoC_2025/Day10.cs b/AoC_2025/Day10.cs
new file mode 100644
index 0000000..39a9ecf
--- /dev/null
+++ b/AoC_2025/Day10.cs
@@ -0,0 +1,96 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.Common;
+using System.IO;
+using System.Linq;
+using AdvenOfCode.Contracts;
+
+namespace AoC_2025;
+
+public class Day10 : IPuzzleSolver<long>
+{
+    private static int done = 0;
+    private (uint lamps, uint[] buttons, int[] joltages)[] ParsePuzzleInput(string path)
+    {
+        var puzzleInput = File.ReadAllLines(path)
+            .Where(line => !string.IsNullOrWhiteSpace(line))
+            .Select(line => line.Split(' ', StringSplitOptions.RemoveEmptyEntries))
+            .Select(instruction => instruction switch
+            {
+                [var lamps, ..var buttons, var joltages] => (lamps: lamps[1..^1], buttons, joltages: joltages[1..^1]),
+                _ => throw new DataException("Misaligned data")
+            })
+            .OrderBy(inst => inst.lamps.Length)
+            .ToArray();
+        var lamps = puzzleInput
+            .Select(input => input.lamps)
+            .Select(lamps => lamps.Index())
+            .Select(ixlamps =>
+                ixlamps.Aggregate((uint)0L, (acc, ixLamp) => acc | ((uint)(ixLamp.Item == '#' ? 1L : 0L) << ixLamp.Index)))
+            .ToArray();
+        var buttons = puzzleInput
+            .Select(input => input.buttons)
+            .Select(buttons => buttons
+                .Select(button => button[1..^1]
+                    .Split(',', StringSplitOptions.RemoveEmptyEntries)
+                    .Select(lampIndex => int.Parse(lampIndex))
+                    .Aggregate((uint)0L, (acc, lampIndex) => acc | ((uint)1 << lampIndex)))
+                .ToArray())
+            .ToArray();
+        var joltages = puzzleInput
+            .Select(input => input.joltages)
+            .Select(joltage => joltage
+                .Split(',', StringSplitOptions.RemoveEmptyEntries)
+                .Select(jolt => int.Parse(jolt))
+                .ToArray())
+            .ToArray();
+        var res = lamps
+            .Zip(buttons, (lamp, button) => (lamp, button))
+            .Zip(joltages, (bl, joltage) => (bl.lamp, bl.button, joltage))
+            .ToArray();
+        return res;
+    }
+
+    public long SolvePart1(string pathToPuzzleInput)
+    {
+        var instructions = ParsePuzzleInput(pathToPuzzleInput);
+        Console.WriteLine($"total: {instructions.Length}");
+        var minCounts = instructions
+            .Select(ins => GetMinCountButtonPressesForLamps(ins.lamps, ins.buttons))
+            .ToArray();
+        return minCounts.Sum();
+    }
+
+    public long SolvePart2(string pathToPuzzleInput)
+    {
+        return 0;
+    }
+
+    private static long GetMinCountButtonPressesForLamps(uint lamps, uint[] buttons)
+    {
+        var presses = 0L;
+        HashSet<uint> lampStates = [lamps];
+        while (lampStates.All(state => state > 0) && presses < 100)
+        {
+            lampStates = lampStates
+                .Select(lampState => GetLampStates(lampState, buttons))
+                .Aggregate((current, states) => [..current,..states])
+                .ToHashSet();
+            presses++;
+        }
+
+        var amount = Interlocked.Increment(ref done);
+        Console.WriteLine($"done: {amount}, presses: {presses}");
+        
+        return presses;
+    }
+
+    private static uint[] GetLampStates(uint lampState, uint[] buttons)
+    {
+        var states = buttons
+            .Where(button => (lampState & button) > 0)
+            .Select(button => lampState ^ button);
+        return [..states];
+    }
+}
\ No newline at end of file