diff --git a/klient/play.py b/klient/play.py
index 846588c..780d180 100755
--- a/klient/play.py
+++ b/klient/play.py
@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 import argparse
 import time
+from typing import Callable, List, Optional, Tuple
 from client import get_state, send_turn, logger, TIME_BEFORE_RETRY
 
 
@@ -12,6 +13,27 @@ parser.add_argument("--log_level", type=str, default="WARNING", choices=["ERROR"
 # you can add your own arguments, the strategy function will get them
 
 
+Coords = Tuple[int, int]
+
+
+class Member:
+    def __init__(self, team: int, id: int, remaining_rounds: int):
+        self.team = team
+        self.id = id
+        self.remaining_rounds = remaining_rounds
+        self.action: Optional[str] = None
+
+
+class Field:
+    def __init__(self, home_for_team: Optional[int],
+                 occupied_by_team: Optional[int],
+                 hill: bool, members: List[Member]):
+        self.home_for_team = home_for_team
+        self.occupied_by_team = occupied_by_team
+        self.hill = hill
+        self.members = members
+
+
 def strategy(team_id: int, state: dict, args: argparse.Namespace) -> dict:
     """Finds the best move for the given state.
 
@@ -46,7 +68,75 @@ def strategy(team_id: int, state: dict, args: argparse.Namespace) -> dict:
     }
     ```
     """
-    return {}
+
+    world = parse_world(state["map"])
+    home = find_fields(world, lambda f: f.home_for_team == team_id)[0][1]
+    members = find_members(world, lambda m: m.team == team_id)
+
+    # TODO: implement your strategy here
+    for member, coords in members:
+        member.action = "up"
+    return build_turn(members)
+
+
+def find_fields(
+    world: List[List[Field]],
+    predicate: Callable[[Field], bool]
+) -> List[Tuple[Field, Coords]]:
+    """Finds all fields that satisfy the given predicate."""
+
+    result = []
+    for y, row in enumerate(world):
+        for x, field in enumerate(row):
+            if predicate(field):
+                result.append((field, (x, y)))
+    return result
+
+
+def find_members(
+    world: List[List[Field]],
+    predicate: Callable[[Member], bool]
+) -> List[Tuple[Member, Coords]]:
+    """Finds all members that satisfy the given predicate."""
+
+    result = []
+    for y, row in enumerate(world):
+        for x, field in enumerate(row):
+            for member in field.members:
+                if predicate(member):
+                    result.append((member, (x, y)))
+    return result
+
+
+def build_turn(members: List[Member]) -> dict:
+    return {
+        "members": [
+            {"id": member.id, "action": member.action}
+            for member in members
+        ]
+    }
+
+
+def parse_world(world: dict) -> List[List[Field]]:
+    fields = []
+    for row in world:
+        fields_row = []
+        for field in row:
+            members = []
+            for member in field["members"]:
+                members.append(Member(
+                    member["team"],
+                    member["id"],
+                    member["remaining_rounds"]
+                ))
+            fields_row.append(Field(
+                field["home_for_team"],
+                field["occupied_by_team"],
+                field["hill"],
+                members
+            ))
+        fields.append(fields_row)
+    return fields
 
 
 def main(args: argparse.Namespace):