diff --git a/.gitignore b/.gitignore
index 0ebe4bcbc542cd5011608aebbb1eb8f08911c764..d4eb4b6c035cba27c21db393dd75b8ad8a5da0b5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,7 @@ solver
 # Python files
 *.pyc
 __pycache__/
+
+# client-icons
+client-icon/
+
diff --git a/comm/server/README.md b/comm/server/README.md
index b76c13b42c35730fd13400c746fe58c27af597ef..661ced123163fd205eca92eb9d6617db88fb5f4e 100644
--- a/comm/server/README.md
+++ b/comm/server/README.md
@@ -1,7 +1,7 @@
-DAS2017 ADC サーバプログラム
+DAS218 ADC サーバプログラム
 ===
 
-DAS2017 アルゴリズムデザインコンテスト用サーバプログラム
+DAS2018 アルゴリズムデザインコンテスト用サーバプログラム
 
 ## Description
 
@@ -32,12 +32,6 @@ python3 main.py [--question XXXX] [--port XXXX] [--clients XXXX]
 
     <dt>-p, --port</dt>
     <dd>サーバのポート (デフォルト：5000)</dd>
-
-    <dt>-l, --line-num-th</dt>
-    <dd>処理を分岐させるライン数の閾値</dd>
-
-    <dt>-t, --timeout</dt>
-    <dd>PYNQで処理させるタイムアウト(秒)</dd>
 </dl>
 
 ## Comments
diff --git a/comm/server/main.py b/comm/server/main.py
index 56d07ec5c7b949cd3c74bb7fe87701e70fcde47b..b151ca3a2cd22e48c589d1144291645041286555 100644
--- a/comm/server/main.py
+++ b/comm/server/main.py
@@ -28,6 +28,60 @@ questions = None
 clients = None
 current_seed = 1
 
+def load_questions():
+    global app_args
+    global questions
+
+    question_path = os.path.abspath(app_args["question"])
+    question_list = glob.glob("{}/NL_*.txt".format(question_path))
+    question_list.sort()
+
+    questions = OrderedDict()
+
+    for v in question_list:
+        # 問題の情報を読み込む
+        with open(v, "r") as fp:
+            _q_lines = fp.readlines()
+        board_size = ""
+        line_num = -1
+        for l in _q_lines:
+            if "SIZE" in l:
+                board_size = l.strip().split()[1]
+            if "LINE_NUM" in l:
+                line_num = int(l.strip().split()[1])
+                break
+
+        _name = os.path.basename(v)
+        questions[_name] = {
+            "path": v,
+            "status": "Not solved",
+            "answer": "",
+            "queue": Queue(),
+            "board_size": board_size,
+            "line_num": line_num,
+            "last_req": None,
+            "answers": [],
+            }
+
+        update_answer_list(_name)
+
+    # 既に回答されているものを読み込む
+    answer_path = os.path.abspath(app_args["out"])
+    answer_list = glob.glob("{}/T03_A*.txt".format(answer_path))
+
+    for v in answer_list:
+        _ans_name = os.path.basename(v)
+        m = re.search(r"T03_A([0-9A-Za-z]+)\.txt", _ans_name)
+        if m:
+            _name = "NL_Q{}.txt".format(m.group(1))
+            with open(v, "r") as fp:
+                _ans_dat = fp.read()
+            try:
+                questions[_name]["status"] = "Solved"
+                questions[_name]["answer"] = _ans_dat
+            except KeyError as e:
+                pass
+
 def update_answer_list(qname):
 
     global app_args
@@ -50,65 +104,8 @@ def update_answer_list(qname):
 @app.before_request
 def before_request():
     global app_args
-    global questions
-    global clients
 
-    if questions is None:
-        question_path = os.path.abspath(app_args["question"])
-        question_list = glob.glob("{}/NL_*.txt".format(question_path))
-        question_list.sort()
-
-        questions = OrderedDict()
-
-        for v in question_list:
-            # 問題の情報を読み込む
-            with open(v, "r") as fp:
-                _q_lines = fp.readlines()
-            board_size = ""
-            line_num = -1
-            for l in _q_lines:
-                if "SIZE" in l:
-                    board_size = l.strip().split()[1]
-                if "LINE_NUM" in l:
-                    line_num = int(l.strip().split()[1])
-                    break
-
-            _name = os.path.basename(v)
-            questions[_name] = {
-                "path": v,
-                "status": "Not solved",
-                "answer": "",
-                "queue": Queue(),
-                "board_size": board_size,
-                "line_num": line_num,
-                "answers": [],
-                }
-
-            update_answer_list(_name)
-
-        # 既に回答されているものを読み込む
-        answer_path = os.path.abspath(app_args["out"])
-        answer_list = glob.glob("{}/T03_A*.txt".format(answer_path))
-
-        for v in answer_list:
-            _ans_name = os.path.basename(v)
-            m = re.search(r"T03_A([0-9A-Za-z]+)\.txt", _ans_name)
-            if m:
-                _name = "NL_Q{}.txt".format(m.group(1))
-                with open(v, "r") as fp:
-                    _ans_dat = fp.read()
-                try:
-                    questions[_name]["status"] = "Solved"
-                    questions[_name]["answer"] = _ans_dat
-                except KeyError as e:
-                    pass
-
-    if clients is None:
-
-        with open(app_args["client"], "r") as fp:
-            _clients = fp.readlines()
-
-        clients = [v.rstrip() for v in _clients]
+    g.local_mode = (request.remote_addr == "127.0.0.1")
 
 @app.route("/post", methods=["POST"])
 def post():
@@ -116,18 +113,24 @@ def post():
     global questions
     global app_args
 
-    _client = request.form["client"]
     _qname = request.form["qname"]
     _answer = request.form["answer"]
-    _cputime = request.form["cputime"]
+    _client = request.form["client"]
+
+    if "solver" in request.form:
+        _solver = request.form["solver"]
+    else:
+        _solver = _client
 
     receive_time = datetime.datetime.now()
     receive_time_str = receive_time.strftime("%Y%m%d%H%M%S")
 
     dat = {
+        "req_id": request.form['req_id'],
         "client": _client,
+        "solver": _solver,
         "answer": _answer,
-        "cputime": _cputime,
+        "cputime": request.form['cputime'],
         "timestamp": receive_time.strftime("%Y/%m/%d %H:%M:%S")
     }
 
@@ -149,7 +152,6 @@ def post():
 
     pattern = r"judge += +\[(.+?), ([0-9.]+)\]"
     m = re.match(pattern, nlcheck)
-    print(nlcheck, m)
     if m and (m.group(1) == "True"):
         dat["nlcheck"] = float(m.group(2))
     else:
@@ -192,22 +194,11 @@ def start():
 
     qstr = "\n".join(_q_lines)
 
-    qnumber  = _question_name.replace(".txt", "").replace("NL_Q", "")
-    probpath = "{}/{}".format(app_args["question"], _question_name)
-    tmppath  = "{}/T03_A{}_tmp.txt".format(app_args["out"], qnumber)
-    outpath  = "{}/T03_A{}.txt".format(app_args["out"], qnumber)
-
     res = {}
     if line_num >= 0:
         # LINE_NUMが閾値未満のとき，PYNQに問題を配信して問題を解かせる
         res = solve_questions(_question_name, qstr)
 
-    # 整形ルーティング (再配線) する
-    #cmd = "/home/pi/pynq-router/resolver/solver --reroute --output {} {} {}".format(outpath, probpath, tmppath)
-    cmd = "/home/pi/adc2017/pynq-router/resolver/solver --reroute --output {} {} {}".format(outpath, probpath, tmppath)
-    print("`{}`".format(cmd))
-    subprocess.call(cmd.strip().split(" "))
-
     # 最終結果だけを保存
     questions[_question_name]["status"] = res["status"]
 
@@ -222,22 +213,35 @@ def solve_questions(qname, qstr):
     global clients
     global questions
     global current_seed
-    global app_args
 
-    def worker(host, qname, qstr, qseed, request_time):
+    def worker(host, qname, qstr, qseed, req_id, resolver):
         _url = "http://{}/start".format(host)
+        data = {
+            "client": host,
+            "qname": qname,
+            "question": qstr,
+            "qseed": qseed,
+            "req_id": req_id,
+            "resolver": resolver
+        }
         try:
-            r = requests.post(_url, data={"client": host, "qname": qname, "question": qstr, "qseed": qseed, "request_time": request_time})
+            r = requests.post(_url, data=data)
             client_res = json.loads(r.text)
         except Exception as e:
             sys.stderr.write(str(e) + "\n")
 
     threads = []
 
-    request_time = time.time()
+    # 時刻をリクエストIDとして設定
+    req_id = time.time()
+    questions[qname]['last_req'] = req_id
 
-    for c in clients:
-        _th = threading.Thread(name=c, target=worker, args=(c, qname, qstr, current_seed, request_time))
+    for c in clients['solver']:
+        # 問題はSolverに送る
+        client_addr = c[0]
+        idx_of_resolver = current_seed % len(clients['resolver'])
+        resolver = clients['resolver'][idx_of_resolver][0]
+        _th = threading.Thread(name=client_addr, target=worker, args=(client_addr, qname, qstr, current_seed, req_id, resolver))
         _th.start()
         threads.append(_th)
         current_seed += 1
@@ -246,6 +250,22 @@ def solve_questions(qname, qstr):
 
     return res
 
+@app.route("/stop", methods=["POST"])
+def stop():
+    _client = request.form["client"]
+    _url = _client + "/stop"
+
+    try:
+        r = requests.get(_url)
+        client_res = json.loads(r.text)["status"]
+    except Exception as e:
+        client_res = "Connection error"
+        sys.stderr.write(str(e) + "\n")
+
+    res = {"status": client_res}
+
+    return json.dumps(res)
+
 @app.route("/status", methods=["POST"])
 def get_status():
     _client = request.form["client"]
@@ -268,8 +288,9 @@ def get_clients():
 
     res = OrderedDict()
 
-    for c in clients:
-        res[c] = "http://{}".format(c)
+    for c in clients['all']:
+        client_ip = c[0]
+        res[client_ip] = "http://{}".format(client_ip)
 
     return json.dumps(res)
 
@@ -289,7 +310,7 @@ def client_table():
     global app_args
     global clients
 
-    return render_template("part_client_table.html", clients=clients)
+    return render_template("part_client_table.html", clients=clients["all"], local_mode=g.local_mode)
 
 @app.route("/get_question_status")
 def question_status():
@@ -303,33 +324,64 @@ def question_status():
     update_answer_list(qname)
     qdata = questions[qname]
 
-    return render_template("part_question_status.html", qname=qname, qdata=qdata, clients=clients)
+    return render_template("part_question_status.html", qname=qname, qdata=qdata, solvers=clients["solver"])
 
 @app.route("/")
 def index():
 
     global app_args
     global questions
-    global clients
 
     question_path = os.path.abspath(app_args["question"])
 
-    return render_template("index.html", questions=questions, question_path=question_path, clients=clients)
+    return render_template("index.html", questions=questions, question_path=question_path)
 
 def main(args):
     raise NotImprementedError()
 
+def init_system():
+
+    global app_args
+    global questions
+    global clients
+    
+    if questions is None:
+        load_questions()
+
+    if clients is None:
+
+        with open(app_args["client"], "r") as fp:
+            _clients = fp.readlines()
+
+        all_clients = [v.rstrip().split() for v in _clients]
+
+        solver = []
+        resolver = []
+        for v in all_clients:
+            if v[1].lower() == "solver":
+                solver.append(v)
+            elif v[1].lower() == "resolver":
+                resolver.append(v)
+
+        clients = {
+            "all": all_clients,
+            "solver": solver,
+            "resolver": resolver
+        }
+
 if __name__ == "__main__":
 
     parser = argparse.ArgumentParser(description="PYNQ control panel.")
     parser.add_argument("-c", "--client", action="store", type=str, default=None, required=True, help="Client list.")
     parser.add_argument("-q", "--question", action="store", type=str, default="./problems", help="Path to the question folder.")
     parser.add_argument("-o", "--out", action="store", type=str, default="./answers", help="Path to the output folder.")
-    parser.add_argument("-t", "--timeout", action="store", type=int, default=300, help="Timeout.")
     parser.add_argument("--debug", action="store_true", default=False, help="Debug mode.")
     args = vars(parser.parse_args())
     app_args = args
 
+    init_system()
+
     if args["debug"]:
         app.debug = True
     app.run(host='0.0.0.0', threaded=True)
+
diff --git a/comm/server/static/css/pynq-manager.css b/comm/server/static/css/pynq-manager.css
index dd2cd54eb79a785ef5034aa5f195275997b9d3fc..4ef3532a257a1d441b833a5441b583fb907aa4e7 100644
--- a/comm/server/static/css/pynq-manager.css
+++ b/comm/server/static/css/pynq-manager.css
@@ -46,9 +46,13 @@ body{
     overflow-y: scroll;
 }
 
-#client-control-pane table th,
-#client-control-pane table td{
-    width: 50%;
+#client-control-pane table th.large-cell,
+#client-control-pane table td.large-cell{
+    width: 40%;
+}
+#client-control-pane table th.small-cell,
+#client-control-pane table td.small-cell{
+    width: 20%;
 }
 
 #question-control-pane h3{
diff --git a/comm/server/static/js/pynq-manager.js b/comm/server/static/js/pynq-manager.js
index 82deab0ce4d0088c3a9dc0b48732de4dbf8f5611..903fac2d808810ba4d8788e2bebb1c6fc3f0a606 100644
--- a/comm/server/static/js/pynq-manager.js
+++ b/comm/server/static/js/pynq-manager.js
@@ -74,7 +74,31 @@ var PynqManager = (function(){
 
     _p.sendStop = function(){
 
-        console.log("Not implemented!");
+        for (var key in this.clients){
+            (function(_key, _client){
+                var statusObj = $(".client-status-row[data-cname='"+_key+"']").find(".client-status-value").eq(0)
+                $.ajax({
+                    type: "POST",
+                    url: "/stop",
+                    dataType: "json",
+                    data: {
+                        "client": _client
+                    }
+                }).done(function(res){
+                    var answer = res["status"];
+                    var message = "";
+
+                    if (answer) {
+                        message = answer;
+                    }else{
+                        message = "Illegal response: " + res;
+                    }
+                    statusObj.text(message);
+                }).fail(function(){
+                    statusObj.text("Connection error");
+                });
+            })(key, this.clients[key]);
+        }
 
     }
 
@@ -101,13 +125,19 @@ $(function(){
                 $(".question-row").removeClass("q-selected");
                 $tr.addClass("q-selected");
                 var qname = $tr.data("qname");
-                show_question_status(qname);
+                // show_question_status(qname);
+                location.hash = "#" + qname;
                 return false;
             });
+
+            var hash = location.hash.replace("#", "");
+            if(hash != ""){
+                $(".question-row[data-qname='" + hash + "']").addClass("q-selected");
+            }
         });
     }
 
-    var refresh_client_table = function(){
+    var show_client_table = function(){
         $.ajax({
             type: "GET",
             dataType: "html",
@@ -115,16 +145,7 @@ $(function(){
         }).done(function(d){
             $("#client-control-pane").html("");
             $("#client-control-pane").html(d);
-
-            $.ajax({
-                type: "GET",
-                dataType: "json",
-                url: "/get_clients"
-            }).done(function(d){
-                pynqClients = d;
-                pm = PynqManager(pynqClients);
-                pm.getStatus();
-            });
+            pm.getStatus();
         });
     }
 
@@ -142,15 +163,30 @@ $(function(){
                 var qname = $(this).data("qname");
                 pm.sendQuestion(qname, after=refresh_question_table);
             });
+            $("#client-control-pane").find(".stop-button").eq(0).click(function(){
+                pm.sendStop();
+            });
         });
     }
 
+    $(window).on('hashchange', function(){
+        var hash = location.hash.replace("#", "");
+        if(hash == ""){
+            show_client_table();
+        }else{
+            show_question_status(hash);
+        }
+    }).trigger('hashchange');
+
     refresh_question_table();
-    refresh_client_table();
 
-    $("#view-server-status-button").click(function(){
-        refresh_client_table();
-        return false;
+    $.ajax({
+        type: "GET",
+        dataType: "json",
+        url: "/get_clients"
+    }).done(function(d){
+        pynqClients = d;
+        pm = PynqManager(pynqClients);
     });
 
 });
diff --git a/comm/server/templates/index.html b/comm/server/templates/index.html
index ea6802291df850455a9d292f39a14090ab3435c4..bb8456d24c04405086c733e5a005ff0416e2a4f1 100644
--- a/comm/server/templates/index.html
+++ b/comm/server/templates/index.html
@@ -20,7 +20,7 @@
         <div class="row">
             <div class="col-5" id="question-control-pane">
                 <h3>問題一覧</h3>&nbsp;
-                <span><a href="#" id="view-server-status-button">クライアント状況</a></span>
+                <span><a href="/#" id="view-server-status-button">システム状況</a></span>
                 <div id="question-table-wrapper">
                     <p>Loading...</p>
                 </div>
diff --git a/comm/server/templates/part_client_table.html b/comm/server/templates/part_client_table.html
index a176eed0dc582ad7de97bfc7d8fe6d49a044fb9d..6211db7a81feb30a171696ac0c605c2153922d12 100644
--- a/comm/server/templates/part_client_table.html
+++ b/comm/server/templates/part_client_table.html
@@ -1,12 +1,33 @@
-<h3>クライアント状況</h3>
+<h3>システム状況</h3>
+
+<h4>動作モード</h4>
+<p>
+{% if local_mode %}
+Normal Mode
+{% else %}
+Viewer Mode
+{% endif %}
+</p>
+
+<h4>クライアント</h4>
 <table class="table table-bordered" id="clients-table">
     <tr>
-        <th>クライアント名</th>
-        <th>ステータス</th>
+        <th class="">Client</th>
+        <th class="">Role</th>
+        <th class="">Status</th>
     </tr>
     {% for c in clients %}
-    <tr class="client-status-row" data-cname="{{c}}">
-        <td class="client-status-name">{{c}}</td>
+    <tr class="client-status-row" data-cname="{{c[0]}}">
+        <td class="client-status-name">
+            {% if c|length > 3 %}
+            <img src="static/client-icon/{{c[3]}}" alt="{{c[2]}}" height="30" />&nbsp;
+            {% endif %}
+            {{c[0]}}
+            {% if c|length > 2 %}
+            &nbsp;({{c[2]}})
+            {% endif %}
+        </td>
+        <td class="">{{c[1]}}</td>
         <td class="client-status-value"></td>
     </tr>
     {% endfor %}
diff --git a/comm/server/templates/part_question_status.html b/comm/server/templates/part_question_status.html
index f669e445c573018a8cf8e874d1b09529f129a161..e46a98dccbec283024c7d703e347f519dd76ff9d 100644
--- a/comm/server/templates/part_question_status.html
+++ b/comm/server/templates/part_question_status.html
@@ -1,20 +1,29 @@
 <div class="row">
-    <div class="col-6">
-        <h3>問題 【{{qname}}】</h3>
+    <div class="col-4">
+        <h3> 【{{qname}}】</h3>
         <p>
             <button class="btn btn-primary btn-lg start-button" type="button" data-qname="{{qname}}">Start</button>
+            <button class="btn btn-danger btn-lg stop-button" type="button" data-qname="all">Stop</button>
         </p>
     </div>
-    <div class="col-6">
+    <div class="col-8">
         <p>処理結果</p>
         <table class="table table-bordered">
             <tr>
-                <th>クライアント</th>
+                <th>Client (Solver)</th>
                 <th>Status</th>
             </tr>
-            {% for c in clients %}
+            {% for c in solvers %}
             <tr>
-                <td>{{c}}</td>
+                <td>
+                    {% if c|length > 3 %}
+                    <img src="static/client-icon/{{c[3]}}" alt="{{c[2]}}" height="30" />&nbsp;
+                    {% endif %}
+                    {{c[0]}}
+                    {% if c|length > 2 %}
+                    &nbsp;({{c[2]}})
+                    {% endif %}
+                </td>
                 <td></td>
             </tr>
             {% endfor %}
@@ -33,7 +42,7 @@
         {% for v in qdata.answers %}
         <tr>
             <td>{{v.timestamp}}</td>
-            <td>{{v.client}}</td>
+            <td>{{v.solver}}</td>
             <td>{{v.nlcheck}}</td>
         </tr>
         {% endfor %}