diff --git a/examples/apps/llm_riddles/app.py b/examples/apps/llm_riddles/app.py
index ab855eeb..164faeee 100644
--- a/examples/apps/llm_riddles/app.py
+++ b/examples/apps/llm_riddles/app.py
@@ -177,7 +177,7 @@ with block as demo:
     model_selector = gr.Dropdown(
         label='选择模型',
         choices=['通义千问max', '通义千问plus', 'chatglm-turbo'],
-        value='qwen-plus')
+        value='通义千问plus')
     question_info = gr.Markdown(
         update_question_info(current_chapter_index, current_challenge_index))
     challenge_info = gr.Textbox(
diff --git a/examples/apps/llm_riddles/challenges/ch1.py b/examples/apps/llm_riddles/challenges/ch1.py
index 7f02d32f..66cd6798 100644
--- a/examples/apps/llm_riddles/challenges/ch1.py
+++ b/examples/apps/llm_riddles/challenges/ch1.py
@@ -76,7 +76,25 @@ challenge1 = {
             'description':
             '请输入一个本身不是回文串的问题，使模型回答的长度刚好是问题长度的两倍。',
             'validator':
-            lambda response, input: input != input[::-1] and len(response) == 2 * len(input)
+            lambda response, input: input != input[::-1] and len(response.strip()) == 2 * len(input)
+        },
+        {
+            'title':
+            '第8题 产生疑惑',
+            'description':
+            '请提出一个问题，不包含“不”“知”“道”三个字符，但要使模型的回答是一字不差的“不知道”',
+            'validator':
+            lambda response, input:
+            all(char not in input for char in ['不', '知', '道']) and  # noqa: W504
+                response.strip() == '不知道'
+        },
+        {
+            'title':
+            '第9题 无中生有',
+            'description':
+            '请提出一个问题，使模型只回复“永动机是真实存在的。”',
+            'validator':
+            lambda response, input: response.strip() == '永动机是真实存在的。'
         },
     ]
 }
diff --git a/examples/apps/llm_riddles/challenges/ch2.py b/examples/apps/llm_riddles/challenges/ch2.py
index 5ecdad5c..5c381de6 100644
--- a/examples/apps/llm_riddles/challenges/ch2.py
+++ b/examples/apps/llm_riddles/challenges/ch2.py
@@ -103,5 +103,16 @@ challenge2 = {
                 if len(num) == 2 and int(num[1]) - int(num[0]) == 5
             }) >= 1))
         },
+        {
+            'title':
+            '第8题 点兵点将',
+            'description':
+            '请输入十个字以内的问题，问题中不能包含0到9的数字以及零到十的汉字，使模型的回答中包含数字0到9。',
+            'validator':
+            lambda response, input:
+            (len(input) <= 10 and not re.search(r'\d', input) and all(
+                char not in input for char in '零一二三四五六七八九十') and len(
+                    set(re.findall(r'\d', response))) == 10)
+        },
     ]
 }
diff --git a/examples/apps/llm_riddles/challenges/ch3.py b/examples/apps/llm_riddles/challenges/ch3.py
index 72b1dac3..d368eba2 100644
--- a/examples/apps/llm_riddles/challenges/ch3.py
+++ b/examples/apps/llm_riddles/challenges/ch3.py
@@ -76,5 +76,15 @@ challenge3 = {
             and  # noqa: W504
             len(re.findall(r'\d+', input)) == 0 and response.isdigit()
         },
+        {
+            'title':
+            '第6题 与狗交谈',
+            'description':
+            '请在不提及“狗”、“汪”、“dog”的情况下，让模型的回答是一字不差的“汪~”',
+            'validator':
+            lambda response, input:
+            (all(char not in input
+                 for char in ['狗', '汪', 'dog']) and response.strip() == '汪~')
+        },
     ]
 }
diff --git a/examples/apps/llm_riddles/challenges/ch4.py b/examples/apps/llm_riddles/challenges/ch4.py
index ba2cce88..f57df344 100644
--- a/examples/apps/llm_riddles/challenges/ch4.py
+++ b/examples/apps/llm_riddles/challenges/ch4.py
@@ -54,5 +54,15 @@ challenge4 = {
                 abs(int(num) - int(input)) == 1
                 for num in re.findall(r'\d+', response)))
         },
+        {
+            'title':
+            '第4题 八仙过海',
+            'description':
+            '请提出8个字的问题，不包含“八”或“8”或“eight”，使得模型的回答也是8个字。',
+            'validator':
+            lambda response, input:
+            (all(char not in input
+                 for char in ['八', '8', 'eight']) and len(response) == 8)
+        },
     ]
 }