diff --git a/endgames.py b/endgames.py
new file mode 100644
index 0000000..614611f
--- /dev/null
+++ b/endgames.py
@@ -0,0 +1,63 @@
+import json
+import re
+import subprocess
+from typing import Dict
+
+from pathlib import Path
+DATA_FILE = Path('endgame-data.json')
+
+if not DATA_FILE.exists():
+    DATA_FILE.write_text('{}')
+
+
+with open(DATA_FILE, 'r') as f:
+    DATA: Dict = json.loads(f.read())
+
+
+def analyze_game(game_id: int):
+    probabilities = {}
+    for deck_size in range(1, 16):
+        try:
+            result = subprocess.run(['./endgame-analyzer', '-g', str(game_id), '-d', str(deck_size), '-i', '0'], stdout=subprocess.PIPE, timeout=30)
+        except subprocess.TimeoutExpired:
+            return probabilities
+        output = result.stdout.decode('utf-8')
+        m = re.search('Probability with optimal play: .*/.* ~ ([0-9.]+)', output)
+        if not m:
+            raise ValueError("Invalid program output: {}".format(output))
+        probabilities[str(deck_size)] = m.group(1)
+    return probabilities
+
+def full_analyze_game(game_id: int):
+    probabilities = {}
+    try:
+        result = subprocess.run(['./endgame-analyzer', '-g', str(game_id), '-d', str(deck_size), '-i', '0', '--all-clues', '-r'], stdout=subprocess.PIPE, timeout=180)
+    except subproces.TimeoutExpired:
+        return probabilities
+    output = result.stdout.decode('utf-8')
+    for m in re.finditer('Probability with (\d+) cards left in deck and (\d) clues (+|-\d): .*/.* ~ ([0-9.]+)', output):
+        probabilities[m.group(1)][m.group(3)] = m.group(4)
+    return probabilities
+
+def full_analyze_game_cached(game_id: int):
+    cached = DATA.get('all', {}).get(str(game_id), None)
+    if cached is not None:
+        return cached
+    result = full_analyze_game(game_id)
+    DATA['all'][game_id] = result
+    save_cache()
+    return result
+
+def analyze_game_cached(game_id: int):
+    cached = DATA['normal'].get(str(game_id), None)
+    if cached is not None:
+        return cached
+    result = analyze_game(game_id)
+    DATA['normal'][game_id] = result
+    save_cache()
+    return result
+
+
+def save_cache():
+    with open(DATA_FILE, 'w') as f:
+        f.writelines(json.dumps(DATA, indent=2))