diff --git a/src/dev/peerat/backend/repository/DatabaseRepository.java b/src/dev/peerat/backend/repository/DatabaseRepository.java
index 68b386e..2bb299c 100644
--- a/src/dev/peerat/backend/repository/DatabaseRepository.java
+++ b/src/dev/peerat/backend/repository/DatabaseRepository.java
@@ -725,4 +725,62 @@ public class DatabaseRepository {
 		}
 		return null;
 	}
+	
+	public boolean adminAddChapter(Chapter chapter) throws SQLException {
+		ensureConnection();
+		PreparedStatement statement = DatabaseQuery.ADD_CHAPTER.prepare(this.con);
+		statement.setString(1, chapter.getName());
+		statement.setTimestamp(2, chapter.getStartDate());
+		statement.setTimestamp(3, chapter.getEndDate());
+		return (statement.executeUpdate() >= 0);
+	}
+	
+	public boolean adminAddPuzzle(Puzzle puzzle, int chapter) throws SQLException {
+		ensureConnection();
+		PreparedStatement statement = DatabaseQuery.ADD_PUZZLE.prepare(this.con);
+		statement.setString(1, puzzle.getName());
+		statement.setString(2, puzzle.getContent());
+		statement.setBytes(3, puzzle.getSoluce());
+		statement.setString(4, "");
+		statement.setInt(5, puzzle.getScoreMax());
+		statement.setInt(6, chapter);
+		return (statement.executeUpdate() >= 0);
+	}
+	
+	public boolean adminUpdateChapter(int id, Chapter chapter) throws SQLException {
+		ensureConnection();
+		PreparedStatement statement = DatabaseQuery.EDIT_CHAPTER.prepare(this.con);
+		statement.setString(1, chapter.getName());
+		statement.setTimestamp(2, chapter.getStartDate());
+		statement.setTimestamp(3, chapter.getEndDate());
+		statement.setInt(4, id);
+		return (statement.executeUpdate() >= 0);
+	}
+	
+	public boolean adminUpdatePuzzle(int id, Puzzle puzzle, int chapter) throws SQLException {
+		ensureConnection();
+		PreparedStatement statement = DatabaseQuery.EDIT_PUZZLE.prepare(this.con);
+		statement.setString(1, puzzle.getName());
+		statement.setString(2, puzzle.getContent());
+		statement.setBytes(3, puzzle.getSoluce());
+		statement.setString(4, "");
+		statement.setInt(5, puzzle.getScoreMax());
+		statement.setInt(6, chapter);
+		statement.setInt(7, id);
+		return (statement.executeUpdate() >= 0);
+	}
+	
+	public boolean adminDeleteChapter(int id) throws SQLException {
+		ensureConnection();
+		PreparedStatement statement = DatabaseQuery.DELETE_CHAPTER.prepare(this.con);
+		statement.setInt(1, id);
+		return (statement.executeUpdate() >= 0);
+	}
+	
+	public boolean adminDeletePuzzle(int id) throws SQLException {
+		ensureConnection();
+		PreparedStatement statement = DatabaseQuery.DELETE_PUZZLE.prepare(this.con);
+		statement.setInt(1, id);
+		return (statement.executeUpdate() >= 0);
+	}
 }
\ No newline at end of file
diff --git a/src/dev/peerat/backend/routes/admins/chapter/AddChapter.java b/src/dev/peerat/backend/routes/admins/chapter/AddChapter.java
index 0b6f66a..84f9dd5 100644
--- a/src/dev/peerat/backend/routes/admins/chapter/AddChapter.java
+++ b/src/dev/peerat/backend/routes/admins/chapter/AddChapter.java
@@ -25,9 +25,12 @@ public class AddChapter implements Response{
 	@Route(path = "^/admin/chapter/$", type = POST, needLogin = true)
 	public void exec(Matcher matcher, Context context, HttpReader reader, HttpWriter writer) throws Exception{
 		JsonMap json = reader.readJson();
-		
 		Chapter chapter = new Chapter(-1, json.get("name"), Timestamp.valueOf(json.<String>get("start")), Timestamp.valueOf(json.<String>get("end")));
-		
+		if(repo.adminAddChapter(chapter)){
+			context.response(200);
+		}else{
+			context.response(501);
+		}
 	}
 
 }
diff --git a/src/dev/peerat/backend/routes/admins/chapter/DeleteChapter.java b/src/dev/peerat/backend/routes/admins/chapter/DeleteChapter.java
index 53ae487..1097d0a 100644
--- a/src/dev/peerat/backend/routes/admins/chapter/DeleteChapter.java
+++ b/src/dev/peerat/backend/routes/admins/chapter/DeleteChapter.java
@@ -21,7 +21,11 @@ public class DeleteChapter implements Response{
 	
 	@Route(path = "^/admin/chapter/(\\d+)$", type = DELETE, needLogin = true)
 	public void exec(Matcher matcher, Context context, HttpReader reader, HttpWriter writer) throws Exception{
-		int id = Integer.parseInt(matcher.group(1));
+		if(this.repo.adminDeleteChapter(Integer.parseInt(matcher.group(1)))){
+			context.response(200);
+		}else{
+			context.response(501);
+		}
 	}
 
 }
diff --git a/src/dev/peerat/backend/routes/admins/chapter/EditChapter.java b/src/dev/peerat/backend/routes/admins/chapter/EditChapter.java
index a8069f0..12c8f6d 100644
--- a/src/dev/peerat/backend/routes/admins/chapter/EditChapter.java
+++ b/src/dev/peerat/backend/routes/admins/chapter/EditChapter.java
@@ -2,8 +2,10 @@ package dev.peerat.backend.routes.admins.chapter;
 
 import static dev.peerat.framework.RequestType.PUT;
 
+import java.sql.Timestamp;
 import java.util.regex.Matcher;
 
+import dev.peerat.backend.model.Chapter;
 import dev.peerat.backend.repository.DatabaseRepository;
 import dev.peerat.framework.Context;
 import dev.peerat.framework.HttpReader;
@@ -23,7 +25,12 @@ public class EditChapter implements Response{
 	@Route(path = "^/admin/chapter/(\\d+)$", type = PUT, needLogin = true)
 	public void exec(Matcher matcher, Context context, HttpReader reader, HttpWriter writer) throws Exception{
 		JsonMap json = reader.readJson();
-		
+		Chapter chapter = new Chapter(-1, json.get("name"), Timestamp.valueOf(json.<String>get("start")), Timestamp.valueOf(json.<String>get("end")));
+		if(repo.adminUpdateChapter(Integer.parseInt(matcher.group(1)), chapter)){
+			context.response(200);
+		}else{
+			context.response(501);
+		}
 		
 	}
 
diff --git a/src/dev/peerat/backend/routes/admins/puzzle/AddPuzzle.java b/src/dev/peerat/backend/routes/admins/puzzle/AddPuzzle.java
index 6f1114a..02117dc 100644
--- a/src/dev/peerat/backend/routes/admins/puzzle/AddPuzzle.java
+++ b/src/dev/peerat/backend/routes/admins/puzzle/AddPuzzle.java
@@ -4,6 +4,7 @@ import static dev.peerat.framework.RequestType.POST;
 
 import java.util.regex.Matcher;
 
+import dev.peerat.backend.model.Puzzle;
 import dev.peerat.backend.repository.DatabaseRepository;
 import dev.peerat.framework.Context;
 import dev.peerat.framework.HttpReader;
@@ -23,8 +24,12 @@ public class AddPuzzle implements Response{
 	@Route(path = "^/admin/puzzle/$", type = POST, needLogin = true)
 	public void exec(Matcher matcher, Context context, HttpReader reader, HttpWriter writer) throws Exception{
 		JsonMap json = reader.readJson();
-		
-		
+		Puzzle puzzle = new Puzzle(-1, json.get("name"), json.get("content"), json.<String>get("soluce").getBytes(), null, json.<Long>get("scoreMax").intValue(), null, -1, null);
+		if(repo.adminAddPuzzle(puzzle, json.<Long>get("chapter").intValue())){
+			context.response(200);
+		}else{
+			context.response(501);
+		}
 	}
 
 }
diff --git a/src/dev/peerat/backend/routes/admins/puzzle/DeletePuzzle.java b/src/dev/peerat/backend/routes/admins/puzzle/DeletePuzzle.java
index a2af169..ba068e3 100644
--- a/src/dev/peerat/backend/routes/admins/puzzle/DeletePuzzle.java
+++ b/src/dev/peerat/backend/routes/admins/puzzle/DeletePuzzle.java
@@ -22,9 +22,11 @@ public class DeletePuzzle implements Response{
 	
 	@Route(path = "^/admin/puzzle/(\\d+)$", type = DELETE, needLogin = true)
 	public void exec(Matcher matcher, Context context, HttpReader reader, HttpWriter writer) throws Exception{
-		JsonMap json = reader.readJson();
-		
-		
+		if(this.repo.adminDeletePuzzle(Integer.parseInt(matcher.group(1)))){
+			context.response(200);
+		}else{
+			context.response(501);
+		}
 	}
 
 }
diff --git a/src/dev/peerat/backend/routes/admins/puzzle/EditPuzzle.java b/src/dev/peerat/backend/routes/admins/puzzle/EditPuzzle.java
index 05dc415..969ba40 100644
--- a/src/dev/peerat/backend/routes/admins/puzzle/EditPuzzle.java
+++ b/src/dev/peerat/backend/routes/admins/puzzle/EditPuzzle.java
@@ -4,6 +4,7 @@ import static dev.peerat.framework.RequestType.PUT;
 
 import java.util.regex.Matcher;
 
+import dev.peerat.backend.model.Puzzle;
 import dev.peerat.backend.repository.DatabaseRepository;
 import dev.peerat.framework.Context;
 import dev.peerat.framework.HttpReader;
@@ -23,8 +24,12 @@ public class EditPuzzle implements Response{
 	@Route(path = "^/admin/puzzle/(\\d+)$", type = PUT, needLogin = true)
 	public void exec(Matcher matcher, Context context, HttpReader reader, HttpWriter writer) throws Exception{
 		JsonMap json = reader.readJson();
-		
-		
+		Puzzle puzzle = new Puzzle(-1, json.get("name"), json.get("content"), json.<String>get("soluce").getBytes(), null, json.<Long>get("scoreMax").intValue(), null, -1, null);
+		if(repo.adminUpdatePuzzle(Integer.parseInt(matcher.group(1)), puzzle, json.<Long>get("chapter").intValue())){
+			context.response(200);
+		}else{
+			context.response(501);
+		}
 	}
 
 }