diff --git a/comm/client/main.py b/comm/client/main.py
index d44b3254878421ea5c49c83e1c6c9810121af462..022c5a3b29b80962ebfe255908caa3816fe8d646 100644
--- a/comm/client/main.py
+++ b/comm/client/main.py
@@ -17,65 +17,17 @@ from urllib.parse import urlparse
 
 sys.path.append(os.path.dirname(os.path.abspath(__file__)) + '/../../solver')
 import BoardStr
-import pynqrouter
+import adc2018solver as pynqrouter
 
 app = Flask(__name__)
 args = {}
-pynq_thread = None
+# pynq_thread = None
 client_baseurl = ""
 
-# Reference: https://teratail.com/questions/52593
-class StoppableThread(threading.Thread):
-    def __init__(self, target, qname, qstr, qseed):
-        super(StoppableThread, self).__init__(target=target)
-        self._th_stop = threading.Event()
-        self._qname = qname
-        self._qstr = qstr
-        self._qseed = int(qseed)
-        self._answer = None
-
-    def run(self):
-        global client_baseurl
-        global pynq_thread
-        global args
-
-        # Main funciton (the solver should be placed here)
-        boardstr = BoardStr.conv_boardstr(self._qstr.split('\n'), 'random', self._qseed)
-        result = pynqrouter.solve(boardstr, self._qseed)
-        if result['solved']:
-            answer = result['solution']
-        else:
-            answer = None
-            pynq_thread = None
-            return
-
-        res = {
-            "client": client_baseurl,
-            "qname": self._qname,
-            "answer": answer,
-            "cputime": result['elapsed']
-        }
-        self._answer = answer
-        r = requests.post("http://{}/post".format(args["host"]), data=res)
-
-        if args["verbose"]:
-            print(res)
-
-        pynq_thread = None
-
-    def stop(self):
-        self._th_stop.set()
-
-    def stopped(self):
-        return self._th_stop.isSet()
-
-    def get_answer(self):
-        return self._answer
-
 @app.route('/start', methods=["POST"])
 def start():
 
-    global pynq_thread
+    # global pynq_thread
     global args
     global client_baseurl
 
@@ -84,13 +36,19 @@ def start():
     if args["verbose"]:
         print(request.form)
 
-    if pynq_thread is None:
+    if pynqrouter.solver_thread is not None:
+        pynqrouter.stop_solver()
+
+    if pynqrouter.solver_thread is None:
         qstr = request.form["question"]
         qname = request.form["qname"]
         qseed = request.form["qseed"]
-        pynq_thread = StoppableThread(target=StoppableThread, qname=qname, qstr=qstr, qseed=qseed)
+	
+        boardstr = BoardStr.conv_boardstr(qstr.split('\n'), 'random', int(qseed))
+        option = {"name": qname, "host": args['host'], "client": client_baseurl} 
 
-        pynq_thread.start()
+        pynqrouter.start_solver(boardstr, qseed, option)
+        # pynq_thread = pynqrouter.start_solver(boardstr, qseed, option)
 
         # 実行だけ開始する
         ans["status"] = "Processing"
@@ -106,26 +64,27 @@ def start():
 @app.route('/stop')
 def stop():
 
-    global pynq_thread
+    # global pynq_thread
 
-    if pynq_thread is None:
+    if pynqrouter.solver_thread is None:
         ans = {"status": "No threads"}
     else:
-        pynq_thread.stop()
+        # pynq_thread.stop()
+        pynqrouter.stop_solver()
         ans = {"status": "Stopped"}
 
-    pynq_thread = None
+    # pynq_thread = None
 
     return json.dumps(ans)
 
 @app.route("/status")
 def status():
 
-    global pynq_thread
+    # global pynq_thread
 
     res_mes = ""
 
-    if pynq_thread is None:
+    if pynqrouter.solver_thread is None:
         res_mes = "Ready"
     else:
         res_mes = "Working"