diff --git a/utama_core/strategy/examples/defense_strategy.py b/utama_core/strategy/examples/defense_strategy.py
index ca394c5d..51ba98ba 100644
--- a/utama_core/strategy/examples/defense_strategy.py
+++ b/utama_core/strategy/examples/defense_strategy.py
@@ -5,6 +5,7 @@
 
 from utama_core.config.enums import Role, Tactic
 from utama_core.entities.data.object import TeamType
+from utama_core.entities.data.vector import Vector2D
 from utama_core.entities.game import Game
 from utama_core.skills.src.block import block_attacker
 from utama_core.skills.src.defend_parameter import defend_parameter
@@ -13,6 +14,19 @@
 from utama_core.strategy.common import AbstractBehaviour, AbstractStrategy
 
 
+def _assign_roles_dynamic(game: Game) -> dict:
+    goal_line = game.field.my_goal_line
+    gx = (goal_line[0][0] + goal_line[1][0]) / 2
+    gy = (goal_line[0][1] + goal_line[1][1]) / 2
+    goal = Vector2D(gx, gy)
+    robots = sorted(game.friendly_robots.values(), key=lambda r: r.p.distance_to(goal))
+    n = len(robots)
+    if n == 0:
+        return {}
+    roles = [Role.GOALKEEPER] + [Role.DEFENDER] * max(0, n - 2) + [Role.MIDFIELDER]
+    return {r.id: role for r, role in zip(robots, roles)}
+
+
 class FindBlockingTarget(AbstractBehaviour):
     def __init__(self, wr_blocking_target: str, name: Optional[str] = "FindBlockingTarget2BB"):
         super().__init__(name=name)
@@ -155,11 +169,7 @@ def setup_(self):
     def update(self) -> py_trees.common.Status:
         self.blackboard.set(
             self.role_map_key,
-            {
-                0: Role.MIDFIELDER,
-                1: Role.DEFENDER,
-                2: Role.GOALKEEPER,
-            },
+            _assign_roles_dynamic(self.blackboard.game),
         )
         return py_trees.common.Status.SUCCESS