diff --git a/.gitignore b/.gitignore
index fd5106f..11d3e4b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 .DS_STORE
+*.ipynb*
+*__pycache__
diff --git a/gym_risk/attack.py b/gym_risk/attack.py
new file mode 100644
index 0000000..5ac6c68
--- /dev/null
+++ b/gym_risk/attack.py
@@ -0,0 +1,17 @@
+import random
+import numpy as np
+
+rng = np.random.default_rng()
+sided_die = 6
+attack_max = 3
+defend_max = 2
+attack_until_threshold = 2
+
+def single_roll(attack, defend):
+    attack_roll = np.sort(rng.integers(1,sided_die+1,min(attack_max,attack)))[::-1]
+    defend_roll = np.sort(rng.integers(1,sided_die+1,min(defend_max,defend)))[::-1]
+    max_loss = min(len(attack_roll), len(defend_roll))
+    attack_wins = np.sum([i>j for i,j in zip(attack_roll,defend_roll)]) 
+    new_attack = attack - max_loss - attack_wins
+    new_defend = defend - attack_wins
+    return new_attack, new_defend
\ No newline at end of file
diff --git a/gym_risk/map.py b/gym_risk/map.py
index bf1b165..96dc78e 100644
--- a/gym_risk/map.py
+++ b/gym_risk/map.py
@@ -1,24 +1,38 @@
 import random
+import json
+from pathlib import Path
 import networkx as nx
 
-from maps.debug import debug
-
 class Map():
     metadata = {}
 
-    def __init__(self):
-        self.graph = None
-        pass
+    def __init__(self, board='us_cont'):
+        # read in graph
+        graph_path = Path(__file__).parent / f"assets/{board}_graph.json"
+        with graph_path.open() as json_file: 
+            graph_data = json.load(json_file) 
 
-    def initialize_player_assignment(self):
-        """Randomly assigns each player a country until there are none left"""
+        #Load in map
+        self.graph = nx.node_link_graph(graph_data)
+        
+        # randomize and assign player map
+        self.graph.nodes = self.initialize_player_assignment()
+        pass
 
 
-        pass
+    def initialize_player_assignment(self,players=['red','blue']):
+        """Randomly assigns each player a country until there are none left"""
+        graph_nodes = self.graph.nodes
+        random.shuffle(graph_nodes)
+        player_list = ['red', 'blue']
+        for j,i in enumerate(graph_nodes):
+            graph_nodes[i]['player'] = player_list[j%len(player_list)]
+            graph_nodes[i]['units'] = 3
+        return graph_nodes
      
     def change_ownership(self, payload):
         """Change ownership of a country
         Params: payload (dict) {node:player}
         """
-        nx.set_node_attributes(self.graph, payload, "owner")
+        nx.set_node_attributes(self.graph, payload, "player")
         pass
diff --git a/gym_risk/maps/__init__.py b/gym_risk/maps/__init__.py
new file mode 100644
index 0000000..e69de29