diff --git a/pom.xml b/pom.xml
index 8e4a1ab..0241b46 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,7 +9,7 @@
     <version>1.0-SNAPSHOT</version>
 
     <properties>
-        <kotlin.version>1.2.0</kotlin.version>
+        <kotlin.version>1.2.31</kotlin.version>
     </properties>
 
     <dependencies>
diff --git a/src/main/kotlin/CaptchaResolver.kt b/src/main/kotlin/CaptchaResolver.kt
deleted file mode 100644
index ee96840..0000000
--- a/src/main/kotlin/CaptchaResolver.kt
+++ /dev/null
@@ -1,45 +0,0 @@
-class CaptchaResolver {
-
-    fun resolvePartOne(input: String): Int {
-        val iterator = input.split("").filter({ s -> s != "" }).listIterator()
-        var last: Int = -1
-        var current: Int
-        var sum = 0
-
-        while (iterator.hasNext()) {
-            current = iterator.next().toInt()
-            if (current == last) {
-                sum += current
-            }
-            last = current
-        }
-        if (last == input.split("")[1].toInt()) {
-            sum += last
-        }
-        return sum
-    }
-
-    fun resolvePartTwo(input: String): Int {
-        var sum = 0
-        val inputList = input.split("").filter({ s -> s != "" })
-
-        for ((index, s) in inputList.withIndex()) {
-            val digit = s.toInt() // 0 | 1 | 2
-            val calculateIndex = calculateIndex(inputList.size, index) //2 | 3 | 4
-            val foundDigit = inputList[calculateIndex].toInt()
-            if (foundDigit == digit) {
-                sum += digit
-            }
-        }
-        return sum
-    }
-
-    private fun calculateIndex(max: Int, actualIndex: Int): Int {
-        val exceedsMax = actualIndex + max / 2 >= max
-        if (exceedsMax) {
-            return (max - actualIndex - max / 2).unaryMinus()
-        }
-        return actualIndex + max/2
-    }
-
-}
\ No newline at end of file
diff --git a/src/test/kotlin/BlockBalanceTest.kt b/src/test/kotlin/BlockBalanceTest.kt
index eeaabb5..8e0c9b6 100644
--- a/src/test/kotlin/BlockBalanceTest.kt
+++ b/src/test/kotlin/BlockBalanceTest.kt
@@ -7,9 +7,9 @@ import org.junit.Assert.assertEquals
 class BlockBalanceTest : Spek({
     describe("A block balancer") {
         on("the input of 0 2 7 0") {
-            it("should return 5") {
+            it("should return 4") {
                 val redistributions = BlockBalancer().findInfiniteLoop("0\t2\t7\t0")
-                assertEquals(5, redistributions)
+                assertEquals(4, redistributions)
             }
         }
     }
diff --git a/src/test/kotlin/CaptchaResolverTest.kt b/src/test/kotlin/CaptchaResolverTest.kt
index 939abcc..65034a0 100644
--- a/src/test/kotlin/CaptchaResolverTest.kt
+++ b/src/test/kotlin/CaptchaResolverTest.kt
@@ -1,3 +1,4 @@
+import day1.CaptchaResolver
 import junit.framework.TestCase.assertEquals
 import org.jetbrains.spek.api.Spek
 import org.jetbrains.spek.api.dsl.describe
@@ -8,7 +9,7 @@ import org.junit.runner.RunWith
 
 @RunWith(JUnitPlatform::class)
 class CaptchaResolverTest: Spek({
-    describe("a CaptchaResolver") {
+    describe("a day1.CaptchaResolver") {
         val resolver = CaptchaResolver()
         on("the given input of 1111 and usage of resolver one") {
             it("should return 4") {
diff --git a/src/test/kotlin/LabyrinthEscapeTest.kt b/src/test/kotlin/LabyrinthEscapeTest.kt
index ec99b7d..cb457f2 100644
--- a/src/test/kotlin/LabyrinthEscapeTest.kt
+++ b/src/test/kotlin/LabyrinthEscapeTest.kt
@@ -11,13 +11,13 @@ class LabyrinthEscapeTest : Spek({
 
     describe("A labyrinth escaper") {
         on("the given input of [(0) 3  0  1  -3]") {
-            it("should return 5 (steps)") {
+            it("should return 10 (steps)") {
                 val result = LabyrinthEscape().calculateSteps("0\n" +
                         "3\n" +
                         "0\n" +
                         "1\n" +
                         "-3")
-                assertEquals(5, result)
+                assertEquals(10, result)
             }
         }
     }
diff --git a/src/test/kotlin/PassPhraseValidatorTest.kt b/src/test/kotlin/PassPhraseValidatorTest.kt
index cea0273..568bc6f 100644
--- a/src/test/kotlin/PassPhraseValidatorTest.kt
+++ b/src/test/kotlin/PassPhraseValidatorTest.kt
@@ -32,6 +32,9 @@ class PassPhraseValidatorTest : Spek({
 
             }
         }
+
+
+
         on("the input of 'aa bb cc dd aaa \n aa bb cc dd aa'") {
             it("should return 1") {
                 val result = PassphraseValidator().validate("aa bb cc dd aaa")
diff --git a/src/test/kotlin/TowersTest.kt b/src/test/kotlin/TowersTest.kt
index 1f2b054..d7f65fd 100644
--- a/src/test/kotlin/TowersTest.kt
+++ b/src/test/kotlin/TowersTest.kt
@@ -2,8 +2,11 @@ import org.jetbrains.spek.api.Spek
 import org.jetbrains.spek.api.dsl.describe
 import org.jetbrains.spek.api.dsl.it
 import org.jetbrains.spek.api.dsl.on
+import org.junit.platform.runner.JUnitPlatform
+import org.junit.runner.RunWith
 import kotlin.test.assertEquals
 
+@RunWith(JUnitPlatform::class)
 class TowersTest : Spek({
 
     val testInput = "pbga (66)\n" +