diff --git a/Backend/schafkopf-client/src/main/kotlin/CmdSchafkopfMessager.kt b/Backend/schafkopf-client/src/main/kotlin/CmdSchafkopfMessager.kt
new file mode 100644
index 0000000..713f68d
--- /dev/null
+++ b/Backend/schafkopf-client/src/main/kotlin/CmdSchafkopfMessager.kt
@@ -0,0 +1,122 @@
+import de.heiserer.CmdPlayer
+import de.heiserer.SchafkopfMessager
+import de.heiserer.cards.Card
+import de.heiserer.cards.CardColor
+import de.heiserer.cards.CardSymbol
+import de.heiserer.player.Player
+
+class CmdSchafkopfMessager: SchafkopfMessager {
+    override fun sendPlayerTurn(player: Player) {
+        if(player !is CmdPlayer){
+            clearConsole()
+        }
+
+        println("${player.getName()} ist am Zug")
+        Thread.sleep(1000)
+    }
+
+    override fun sendPlayerWonTrick(player: Player) {
+        println("${player.getName()} hat den Stich gewonnen.")
+        println()
+    }
+
+    override fun sendPlayerWonGame(player: Player) {
+        TODO("Not yet implemented")
+    }
+
+    override fun sendCardPlayed(player: Player, card: Card) {
+        println("${player.getName()} hat ${card.displayName} gespielt.")
+    }
+
+    override fun sendTableCards(cards: List<Card>) {
+        println("Tischkarten:")
+        CmdCard.printCards(cards)
+
+        Thread.sleep(3000)
+    }
+
+
+
+    class CmdCard(card: Card){
+        private val symbolMap = mapOf(
+            CardSymbol.SIEBEN to "7",
+            CardSymbol.ACHT to "8",
+            CardSymbol.NEUN to "9",
+            CardSymbol.ZEHN to "10",
+            CardSymbol.OBER to "O",
+            CardSymbol.UNTER to "U",
+            CardSymbol.KOENIG to "K",
+            CardSymbol.ASS to "A"
+        )
+
+        private val colorMap = mapOf(
+            CardColor.HERZ to "♥",
+            CardColor.SCHELL to "♦",
+            CardColor.EICHEL to "♣",
+            CardColor.BLATT to "♠"
+        )
+
+        private val symbol = symbolMap[card.symbol]?: "?"
+        private val color = colorMap[card.color]?: "?"
+        private val colorName = card.color.displayName
+        private val symbolName = card.symbol.displayName
+
+        private val cardWidth = 13
+
+        private val symbolLine = "│ ${symbol.padEnd(cardWidth-5)}$symbol │"
+        private val colorLine = "│ ${color.padEnd(cardWidth-5)}$color │"
+
+        private val cardLines = listOf(
+            "┌───────────┐",
+            symbolLine,
+            colorLine,
+            "│${colorName.padCenter(cardWidth-2)}│",
+            "│${symbolName.padCenter(cardWidth-2)}│",
+            colorLine,
+            symbolLine,
+            "└───────────┘"
+
+        )
+
+        fun print(){
+            cardLines.forEach {
+                println(it)
+            }
+        }
+
+        fun getCardLines(): List<String> {
+            return cardLines
+        }
+
+        private fun String.padCenter(totalWidth: Int, padChar: Char = ' '): String {
+            if (this.length >= totalWidth) return this
+            val padding = totalWidth - this.length
+            val padStart = this.length + padding / 2
+            return this.padStart(padStart, padChar).padEnd(totalWidth, padChar)
+        }
+
+        companion object {
+            fun printCards(cards: List<Card>) {
+                val lastCardLines = CmdCard(cards.last()).getCardLines()
+
+                val cardLines = cards.map { CmdCard(it).getCardLines() }
+
+                // Loop through the indices of the lines that are present in all cards
+                for (i in lastCardLines.indices) {
+                    // For other lines, print up to the first 5 characters
+                    var line = cardLines.joinToString(" ") { it[i].take(5) }
+                    line += lastCardLines[i].drop(5)
+                    println(line)
+                }
+            }
+        }
+
+    }
+
+    fun clearConsole() {
+        for (i in 1..100) {
+            println()
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/Backend/schafkopf-client/src/main/kotlin/de/heiserer/CmdPlayer.kt b/Backend/schafkopf-client/src/main/kotlin/de/heiserer/CmdPlayer.kt
new file mode 100644
index 0000000..232343c
--- /dev/null
+++ b/Backend/schafkopf-client/src/main/kotlin/de/heiserer/CmdPlayer.kt
@@ -0,0 +1,60 @@
+package de.heiserer
+
+import de.heiserer.cards.*
+import de.heiserer.player.Player
+import java.util.*
+
+
+class CmdPlayer(name: String) : Player(name) {
+    private val scanner = Scanner(System.`in`)
+
+    override fun playCard(tableCards: UnsortedCardList, gameType: GameType): Card {
+        val cardsCopy = cards.getCopyOfCards()
+
+        println("Available cards:")
+        CmdSchafkopfMessager.CmdCard.printCards(cardsCopy)
+
+        // Print cards with their respective index
+        cardsCopy.forEachIndexed { index, card ->
+            println("(${index + 1}) ${card.name}") // Prints card with index starting from 1
+        }
+
+        // Prompt the user to enter a card number
+        println("Please enter the number of the card you want to play:")
+
+        val userInput = scanner.nextLine()
+        val cardToPlay = getCardByUserInput(userInput, tableCards, gameType)
+
+        return cards.remove(cardToPlay)
+    }
+
+    private fun getCardByUserInput(
+        userInput: String,
+        tableCards: UnsortedCardList,
+        gameType: GameType
+    ): Card {
+        val cardsCopy = cards.getCopyOfCards()
+        return try {
+            // Convert user input to an integer and adjust for zero-based index
+            val cardIndex = userInput.toInt() - 1
+
+            // Ensure the index is within bounds
+            if (cardIndex in cardsCopy.indices) {
+                cardsCopy[cardIndex] // Return the selected card
+                if(validateCard(cardsCopy[cardIndex], tableCards, gameType)){
+                    cardsCopy[cardIndex]
+                } else {
+                    println("Invalid card. Please try again.")
+                    playCard(tableCards, gameType) // Retry if the card is invalid
+                }
+            } else {
+                println("Invalid card number. Please try again.")
+                playCard(tableCards, gameType) // Retry if the input was invalid
+            }
+        } catch (e: NumberFormatException) {
+            println("Invalid input. Please enter a number.")
+            playCard(tableCards, gameType) // Retry on invalid input
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/Backend/schafkopf-client/src/main/kotlin/de/heiserer/SchafkopfClient.kt b/Backend/schafkopf-client/src/main/kotlin/de/heiserer/SchafkopfClient.kt
index b246dae..44ed069 100644
--- a/Backend/schafkopf-client/src/main/kotlin/de/heiserer/SchafkopfClient.kt
+++ b/Backend/schafkopf-client/src/main/kotlin/de/heiserer/SchafkopfClient.kt
@@ -1,12 +1,14 @@
 package de.heiserer
 
+import CmdSchafkopfMessager
+import de.heiserer.player.NPCPlayer
 import de.heiserer.plugins.*
 import io.ktor.server.application.*
 import io.ktor.server.engine.*
 import io.ktor.server.netty.*
 
 fun main() {
-    val test = SchafkopfGameController()
+    val test = SchafkopfGameController(listOf(NPCPlayer("NPC 1"), NPCPlayer("NPC 2"), CmdPlayer("Dev"), NPCPlayer("NPC 4")), CmdSchafkopfMessager())
 
     test.playRound()
 
diff --git a/Backend/schafkopf-shared/src/main/kotlin/SchafkopfGameController.kt b/Backend/schafkopf-shared/src/main/kotlin/SchafkopfGameController.kt
index f893c11..5e8e854 100644
--- a/Backend/schafkopf-shared/src/main/kotlin/SchafkopfGameController.kt
+++ b/Backend/schafkopf-shared/src/main/kotlin/SchafkopfGameController.kt
@@ -1,7 +1,10 @@
 package de.heiserer
 
-class SchafkopfGameController {
-    private val players = listOf(NPCPlayer("NPC 1"), NPCPlayer("NPC 2"), NPCPlayer("NPC 3"), NPCPlayer("NPC 4"))
+import de.heiserer.cards.*
+import de.heiserer.player.Player
+
+class SchafkopfGameController(palyers: List<Player>, private val messager: SchafkopfMessager) {
+    private val players = palyers
 
     private lateinit var gameType: GameType
     private val playedCards: CardList = UnsortedCardList()
@@ -16,6 +19,7 @@ class SchafkopfGameController {
 
         for(i in 0 until 8){
             startingPlayer = playTrick(startingPlayer)
+            messager.sendPlayerWonTrick(startingPlayer)
         }
     }
 
@@ -24,15 +28,17 @@ class SchafkopfGameController {
 
         for(i in 0 until 4){
             val currentPlayer = calculatePlayerOffset(startingPlayer, i)
-            currentPlayer.printName()
-
+            messager.sendPlayerTurn(currentPlayer)
             val card = currentPlayer.playCard(tableCards, gameType)
+            messager.sendCardPlayed(currentPlayer, card)
             tableCards.add(card)
+            messager.sendTableCards(tableCards.getCopyOfCards())
         }
 
-        tableCards.print()
+        playedCards.add(tableCards)
 
-        return startingPlayer
+        val trickOffset = CardToolkit.whoTricks(gameType, tableCards)
+        return calculatePlayerOffset(startingPlayer, trickOffset)
     }
 
     private fun calculatePlayerOffset(startingPlayer: Player, i: Int): Player = players[(players.indexOf(startingPlayer) + i) % 4]
@@ -52,62 +58,3 @@ class SchafkopfGameController {
         }
     }
 }
-
-abstract class Player(private var name: String){
-    protected var cards: SortedCardList = SortedCardList(GameType.SAU_SPIEL)
-
-    fun serveCards(cards: UnsortedCardList){
-        this.cards = cards.asSortedCardList(GameType.SAU_SPIEL)
-    }
-
-    fun sortCards(gameType: GameType){
-        cards = cards.asSortedCardList(gameType)
-        println("Spieler $name hat folgende Karten sortiert:")
-        cards.print()
-        println()
-        println("Trumpf:")
-        cards.getTrumpf().print()
-        println()
-        println("Farbe:")
-        cards.getCardsWithoutTrumpf().print()
-        println()
-    }
-
-    abstract fun playCard(tableCards: UnsortedCardList, gameType: GameType): Card
-
-    fun printName(){
-        println(name)
-    }
-}
-
-class NPCPlayer(name: String) : Player(name){
-    override fun playCard(tableCards: UnsortedCardList, gameType: GameType): Card {
-        if(tableCards.size() == 0){
-            println("Erster Spieler")
-            val card = cards.removeLast()
-            println("Spielt ${card.displayName}")
-            println()
-            return card
-        }
-
-        val firstCard = tableCards.get(0)
-        if(cards.farbFreiOrTrumpf(firstCard, gameType)){
-            println("farbFrei Or Trumpf")
-            return playTrumpf()
-        }
-    }
-
-    private fun playTrumpf(): Card {
-        val trumpf = cards.getTrumpf()
-        if (trumpf.size() > 0) {
-            println("play Trumpf")
-            val card = trumpf.removeLast()
-            println("Spielt ${card.displayName}")
-            println()
-            return cards.remove(card)
-        } else {
-            println("abspatzen")
-            return cards.removeFirst()
-        }
-    }
-}
\ No newline at end of file
diff --git a/Backend/schafkopf-shared/src/main/kotlin/SchafkopfMessager.kt b/Backend/schafkopf-shared/src/main/kotlin/SchafkopfMessager.kt
new file mode 100644
index 0000000..5687e1e
--- /dev/null
+++ b/Backend/schafkopf-shared/src/main/kotlin/SchafkopfMessager.kt
@@ -0,0 +1,12 @@
+package de.heiserer
+
+import de.heiserer.cards.Card
+import de.heiserer.player.Player
+
+interface SchafkopfMessager {
+    fun sendPlayerTurn(player: Player)
+    fun sendPlayerWonTrick(player: Player)
+    fun sendPlayerWonGame(player: Player)
+    fun sendCardPlayed(player: Player, card: Card)
+    fun sendTableCards(cards: List<Card>)
+}
\ No newline at end of file
diff --git a/Backend/schafkopf-shared/src/main/kotlin/card/CardErrors.kt b/Backend/schafkopf-shared/src/main/kotlin/card/CardErrors.kt
new file mode 100644
index 0000000..4630355
--- /dev/null
+++ b/Backend/schafkopf-shared/src/main/kotlin/card/CardErrors.kt
@@ -0,0 +1,6 @@
+package de.heiserer.cards
+
+class CardAlreadyAddedException(message: String, val card: Card) : RuntimeException(message) {
+
+    // You can add additional constructors or methods if needed, but for now, this is sufficient to handle the scenario of adding a card that's already in the list.
+}
\ No newline at end of file
diff --git a/Backend/schafkopf-shared/src/main/kotlin/card/CardList.kt b/Backend/schafkopf-shared/src/main/kotlin/card/CardList.kt
new file mode 100644
index 0000000..4dea15e
--- /dev/null
+++ b/Backend/schafkopf-shared/src/main/kotlin/card/CardList.kt
@@ -0,0 +1,21 @@
+package de.heiserer.cards
+
+interface CardList {
+    fun add(card: Card)
+    fun add(cards: CardList)
+
+    fun remove(card: Card): Card
+    fun remove(cards: CardList)
+    fun removeLast(): Card
+    fun removeFirst(): Card
+
+    fun get(index: Int): Card
+    fun getLast(): Card
+    fun getCopyOfCards(): List<Card>
+
+    fun indexOf(card: Card): Int
+    operator fun contains(card: Card): Boolean
+    fun size(): Int
+    fun print()
+    fun asSortedCardList(type: GameType): SortedCardList
+}
\ No newline at end of file
diff --git a/Backend/schafkopf-shared/src/main/kotlin/card/CardToolkit.kt b/Backend/schafkopf-shared/src/main/kotlin/card/CardToolkit.kt
new file mode 100644
index 0000000..c6dffe7
--- /dev/null
+++ b/Backend/schafkopf-shared/src/main/kotlin/card/CardToolkit.kt
@@ -0,0 +1,36 @@
+package de.heiserer.cards
+
+class CardToolkit private constructor(private val gameType: GameType) {
+    private val sortedCardList = UnsortedCardList(true).asSortedCardList(gameType)
+
+    fun isTrumpf(card: Card): Boolean = card in sortedCardList.getTrumpf().getCopyOfCards()
+
+    fun whoTricks(cards: CardList): Int {
+        if(cards.size() != 4){
+            throw IllegalArgumentException("Es müssen 4 Karten auf dem Tisch liegen.")
+        }
+
+        val sortedCards = cards.asSortedCardList(gameType)
+
+        if(sortedCards.getTrumpf().size() > 0){
+            return cards.indexOf(sortedCards.getTrumpf().getLast())
+        } else {
+            val firstColor = cards.get(0).color
+            val colorCards = sortedCards.getCardsWithoutTrumpf(firstColor)
+
+            return cards.indexOf(colorCards.getLast())
+        }
+    }
+
+    companion object {
+        fun isTrumpf(gameType: GameType, card: Card): Boolean {
+            val toolkit = CardToolkit(gameType)
+            return toolkit.isTrumpf(card)
+        }
+
+        fun whoTricks(gameType: GameType, cards: CardList): Int {
+            val toolkit = CardToolkit(gameType)
+            return toolkit.whoTricks(cards)
+        }
+    }
+}
\ No newline at end of file
diff --git a/Backend/schafkopf-shared/src/main/kotlin/Schafkopfkarte.kt b/Backend/schafkopf-shared/src/main/kotlin/card/Schafkopfkarte.kt
similarity index 92%
rename from Backend/schafkopf-shared/src/main/kotlin/Schafkopfkarte.kt
rename to Backend/schafkopf-shared/src/main/kotlin/card/Schafkopfkarte.kt
index 416e1f6..2823d58 100644
--- a/Backend/schafkopf-shared/src/main/kotlin/Schafkopfkarte.kt
+++ b/Backend/schafkopf-shared/src/main/kotlin/card/Schafkopfkarte.kt
@@ -1,9 +1,9 @@
-package de.heiserer
+package de.heiserer.cards
 
 enum class Card(val color: CardColor, val symbol: CardSymbol) {
     SCHELL_7(CardColor.SCHELL, CardSymbol.SIEBEN),
     SCHELL_8(CardColor.SCHELL, CardSymbol.ACHT),
-    SCHELL_9(CardColor.SCHELL, CardSymbol.NINE),
+    SCHELL_9(CardColor.SCHELL, CardSymbol.NEUN),
     SCHELL_U(CardColor.SCHELL, CardSymbol.UNTER),
     SCHELL_O(CardColor.SCHELL, CardSymbol.OBER),
     SCHELL_K(CardColor.SCHELL, CardSymbol.KOENIG),
@@ -11,7 +11,7 @@ enum class Card(val color: CardColor, val symbol: CardSymbol) {
     SCHELL_A(CardColor.SCHELL, CardSymbol.ASS),
     HERZ_7(CardColor.HERZ, CardSymbol.SIEBEN),
     HERZ_8(CardColor.HERZ, CardSymbol.ACHT),
-    HERZ_9(CardColor.HERZ, CardSymbol.NINE),
+    HERZ_9(CardColor.HERZ, CardSymbol.NEUN),
     HERZ_U(CardColor.HERZ, CardSymbol.UNTER),
     HERZ_O(CardColor.HERZ, CardSymbol.OBER),
     HERZ_K(CardColor.HERZ, CardSymbol.KOENIG),
@@ -19,7 +19,7 @@ enum class Card(val color: CardColor, val symbol: CardSymbol) {
     HERZ_A(CardColor.HERZ, CardSymbol.ASS),
     BLATT_7(CardColor.BLATT, CardSymbol.SIEBEN),
     BLATT_8(CardColor.BLATT, CardSymbol.ACHT),
-    BLATT_9(CardColor.BLATT, CardSymbol.NINE),
+    BLATT_9(CardColor.BLATT, CardSymbol.NEUN),
     BLATT_U(CardColor.BLATT, CardSymbol.UNTER),
     BLATT_O(CardColor.BLATT, CardSymbol.OBER),
     BLATT_K(CardColor.BLATT, CardSymbol.KOENIG),
@@ -27,7 +27,7 @@ enum class Card(val color: CardColor, val symbol: CardSymbol) {
     BLATT_A(CardColor.BLATT, CardSymbol.ASS),
     EICHEL_7(CardColor.EICHEL, CardSymbol.SIEBEN),
     EICHEL_8(CardColor.EICHEL, CardSymbol.ACHT),
-    EICHEL_9(CardColor.EICHEL, CardSymbol.NINE),
+    EICHEL_9(CardColor.EICHEL, CardSymbol.NEUN),
     EICHEL_U(CardColor.EICHEL, CardSymbol.UNTER),
     EICHEL_O(CardColor.EICHEL, CardSymbol.OBER),
     EICHEL_K(CardColor.EICHEL, CardSymbol.KOENIG),
@@ -49,7 +49,7 @@ enum class CardColor(val order: Int, val displayName: String) {
 enum class CardSymbol(val order: Int, val displayName: String, val value: Int) {
     SIEBEN(0,"7", 0),
     ACHT(1,"8", 0),
-    NINE(2,"9", 0),
+    NEUN(2,"9", 0),
     UNTER(3,"Unter", 2),
     OBER(4,"Ober", 3),
     KOENIG(5,"König", 4),
diff --git a/Backend/schafkopf-shared/src/main/kotlin/card/SortedCardList.kt b/Backend/schafkopf-shared/src/main/kotlin/card/SortedCardList.kt
new file mode 100644
index 0000000..d92d0b0
--- /dev/null
+++ b/Backend/schafkopf-shared/src/main/kotlin/card/SortedCardList.kt
@@ -0,0 +1,41 @@
+package de.heiserer.cards
+
+class SortedCardList(private val gameType: GameType, withAllCards: Boolean = false) : UnsortedCardList(withAllCards) {
+    override fun add(card: Card) {
+        super.add(card)
+        sort()
+    }
+
+    fun getCardsWithoutTrumpf(color: CardColor? = null): SortedCardList {
+        val cardsWithoutTrumpf = SortedCardList(gameType)
+
+        color?.let { cardsWithoutTrumpf.add(get(it)) }?: cardsWithoutTrumpf.add(this)
+        try {
+            cardsWithoutTrumpf.remove(getTrumpf())
+        } catch (_: IllegalArgumentException) {
+        }
+
+        return cardsWithoutTrumpf
+    }
+
+    fun getTrumpf(): SortedCardList {
+        val trumpf = SortedCardList(gameType)
+
+        gameType.symbol?.let {
+            trumpf.add(get(it))
+        } ?: run {
+            trumpf.add(get(CardSymbol.OBER))
+            trumpf.add(get(CardSymbol.UNTER))
+        }
+
+        gameType.color?.let {
+            try{ trumpf.add(get(it)) } catch (_: CardAlreadyAddedException) {}
+        }
+
+        return trumpf
+    }
+
+    private fun sort() {
+        super.sortInternal(gameType.symbol, gameType.color)
+    }
+}
\ No newline at end of file
diff --git a/Backend/schafkopf-shared/src/main/kotlin/UnsortedCardList.kt b/Backend/schafkopf-shared/src/main/kotlin/card/UnsortedCardList.kt
similarity index 63%
rename from Backend/schafkopf-shared/src/main/kotlin/UnsortedCardList.kt
rename to Backend/schafkopf-shared/src/main/kotlin/card/UnsortedCardList.kt
index 60576f7..4253e50 100644
--- a/Backend/schafkopf-shared/src/main/kotlin/UnsortedCardList.kt
+++ b/Backend/schafkopf-shared/src/main/kotlin/card/UnsortedCardList.kt
@@ -1,18 +1,4 @@
-package de.heiserer
-
-interface CardList {
-    fun add(card: Card)
-    fun add(cards: CardList)
-    fun remove(card: Card): Card
-    fun remove(cards: CardList)
-    fun removeLast(): Card
-    fun get(index: Int): Card
-    fun getCopyOfCards(): List<Card>
-    fun size(): Int
-    fun print()
-    fun asSortedCardList(type: GameType): SortedCardList
-    fun removeFirst(): Card
-}
+package de.heiserer.cards
 
 open class UnsortedCardList(withAllCards: Boolean = false): CardList {
     private val cards: MutableList<Card> = if(withAllCards){
@@ -21,6 +7,10 @@ open class UnsortedCardList(withAllCards: Boolean = false): CardList {
         mutableListOf()
     }
 
+    override operator fun contains(card: Card): Boolean {
+        return cards.contains(card)
+    }
+
     override fun add(card: Card) {
         if (card !in cards) {
             cards.add(card)
@@ -60,6 +50,10 @@ open class UnsortedCardList(withAllCards: Boolean = false): CardList {
         return cards.removeLast()
     }
 
+    override fun indexOf(card: Card): Int {
+        return cards.indexOf(card)
+    }
+
     override fun get(index: Int): Card {
         if(index < 0 || index >= cards.size){
             throw IllegalArgumentException("Index $index is out of bounds.")
@@ -67,6 +61,10 @@ open class UnsortedCardList(withAllCards: Boolean = false): CardList {
         return cards[index]
     }
 
+    override fun getLast(): Card {
+        return cards[cards.size - 1]
+    }
+
     protected fun get(color: CardColor): CardList {
         val list = UnsortedCardList()
         cards.forEach { card ->
@@ -129,52 +127,3 @@ open class UnsortedCardList(withAllCards: Boolean = false): CardList {
         }.thenComparing(compareBy({ it.color.order }, { it.symbol.order })))
     }
 }
-
-class SortedCardList(private val gameType: GameType, withAllCards: Boolean = false) : UnsortedCardList(withAllCards) {
-    private fun sort() {
-        super.sortInternal(gameType.symbol, gameType.color)
-    }
-
-    fun getCardsWithoutTrumpf(color: CardColor? = null): SortedCardList {
-        val cardsWithoutTrumpf = SortedCardList(gameType)
-
-        color?.let { cardsWithoutTrumpf.add(get(it)) }?: cardsWithoutTrumpf.add(this)
-        try {
-            cardsWithoutTrumpf.remove(getTrumpf())
-        } catch (_: IllegalArgumentException) {
-        }
-
-        return cardsWithoutTrumpf
-    }
-
-    fun getTrumpf():SortedCardList {
-        val trumpf = SortedCardList(gameType)
-
-        gameType.symbol?.let {
-            trumpf.add(get(it))
-        } ?: run {
-            trumpf.add(get(CardSymbol.OBER))
-            trumpf.add(get(CardSymbol.UNTER))
-        }
-
-        gameType.color?.let { try{
-            trumpf.add(get(it))
-        } catch (_: CardAlreadyAddedException) {}
-        }
-
-        return trumpf
-    }
-
-    fun farbFreiOrTrumpf(firstCard: Card, gameType: GameType) =
-        firstCard.color == gameType.color || getCardsWithoutTrumpf(gameType.color).size() == 0
-
-    override fun add(card: Card) {
-        super.add(card)
-        sort()
-    }
-}
-
-class CardAlreadyAddedException(message: String, val card: Card) : RuntimeException(message) {
-
-    // You can add additional constructors or methods if needed, but for now, this is sufficient to handle the scenario of adding a card that's already in the list.
-}
\ No newline at end of file
diff --git a/Backend/schafkopf-shared/src/main/kotlin/player/NPCPlayer.kt b/Backend/schafkopf-shared/src/main/kotlin/player/NPCPlayer.kt
new file mode 100644
index 0000000..4d70198
--- /dev/null
+++ b/Backend/schafkopf-shared/src/main/kotlin/player/NPCPlayer.kt
@@ -0,0 +1,38 @@
+package de.heiserer.player
+
+import de.heiserer.cards.*
+
+class NPCPlayer(name: String) : Player(name){
+    override fun playCard(tableCards: UnsortedCardList, gameType: GameType): Card {
+        if(tableCards.size() == 0){
+            return playTrumpf()
+        }
+
+        val firstCard = tableCards.get(0)
+        return if(CardToolkit.isTrumpf(gameType, firstCard)){
+            playTrumpf()
+        } else {
+            playColor(firstCard.color)
+        }
+    }
+
+    private fun playTrumpf(): Card {
+        val trumpfCards = cards.getTrumpf()
+        if (trumpfCards.size() > 0) {
+            val card = trumpfCards.removeLast()
+            return cards.remove(card)
+        } else {
+            return cards.removeFirst()
+        }
+    }
+
+    private fun playColor(color: CardColor): Card {
+        val colorCards = cards.getCardsWithoutTrumpf(color)
+        if (colorCards.size() > 0) {
+            val card = colorCards.removeLast()
+            return cards.remove(card)
+        } else {
+            return cards.removeFirst()
+        }
+    }
+}
\ No newline at end of file
diff --git a/Backend/schafkopf-shared/src/main/kotlin/player/Player.kt b/Backend/schafkopf-shared/src/main/kotlin/player/Player.kt
new file mode 100644
index 0000000..6d860af
--- /dev/null
+++ b/Backend/schafkopf-shared/src/main/kotlin/player/Player.kt
@@ -0,0 +1,35 @@
+package de.heiserer.player
+
+import de.heiserer.cards.*
+
+abstract class Player(private var name: String){
+    protected var cards: SortedCardList = SortedCardList(GameType.SAU_SPIEL)
+
+    fun serveCards(cards: UnsortedCardList){
+        this.cards = cards.asSortedCardList(GameType.SAU_SPIEL)
+    }
+
+    fun sortCards(gameType: GameType){
+        cards = cards.asSortedCardList(gameType)
+    }
+
+    abstract fun playCard(tableCards: UnsortedCardList, gameType: GameType): Card
+
+    fun getName(): String{
+        return name
+    }
+
+    protected fun validateCard(card: Card, tableCards: UnsortedCardList, gameType: GameType): Boolean{
+        if(tableCards.size() == 0){
+            return true
+        }
+
+        val firstCard = tableCards.get(0)
+
+        return if(CardToolkit.isTrumpf(gameType, firstCard)){
+            CardToolkit.isTrumpf(gameType, card) || cards.getTrumpf().size() == 0
+        } else {
+            card.color == firstCard.color || cards.getCardsWithoutTrumpf(firstCard.color).size() == 0
+        }
+    }
+}
\ No newline at end of file
diff --git a/Backend/schafkopf-shared/src/test/kotlin/CardListTest.kt b/Backend/schafkopf-shared/src/test/kotlin/CardListTest.kt
index a59dbcd..bf65a6f 100644
--- a/Backend/schafkopf-shared/src/test/kotlin/CardListTest.kt
+++ b/Backend/schafkopf-shared/src/test/kotlin/CardListTest.kt
@@ -1,4 +1,7 @@
-import de.heiserer.*
+import de.heiserer.cards.Card
+import de.heiserer.cards.CardColor
+import de.heiserer.cards.GameType
+import de.heiserer.cards.UnsortedCardList
 import org.junit.jupiter.api.Assertions.*
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.params.ParameterizedTest
diff --git a/Backend/schafkopf-shared/src/test/kotlin/CardToolkitTest.kt b/Backend/schafkopf-shared/src/test/kotlin/CardToolkitTest.kt
new file mode 100644
index 0000000..9f72a96
--- /dev/null
+++ b/Backend/schafkopf-shared/src/test/kotlin/CardToolkitTest.kt
@@ -0,0 +1,25 @@
+import de.heiserer.cards.*
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Test
+
+class CardToolkitTest {
+    @Test
+    fun `test isTrumpf`() {
+        // ASSERT AND ACT
+        assertEquals(true, CardToolkit.isTrumpf(GameType.SAU_SPIEL, Card.HERZ_O))
+        assertEquals(false, CardToolkit.isTrumpf(GameType.SAU_SPIEL, Card.SCHELL_7))
+    }
+
+    @Test
+    fun whoTricks() {
+        // ARRANGE
+        val cards = UnsortedCardList()
+        cards.add(Card.SCHELL_7)
+        cards.add(Card.SCHELL_8)
+        cards.add(Card.SCHELL_K)
+        cards.add(Card.SCHELL_O)
+
+        // ASSERT AND ACT
+        assertEquals(3, CardToolkit.whoTricks(GameType.SAU_SPIEL, cards))
+    }
+}