6 files changed, 6 insertions, 6 deletions
diff --git a/prolog/problems/sorting/is_sorted_1/common.py b/prolog/problems/sorting/is_sorted_1/common.py
index 6409f20..0e8a49d 100644
--- a/prolog/problems/sorting/is_sorted_1/common.py
+++ b/prolog/problems/sorting/is_sorted_1/common.py
@@ -6,7 +6,7 @@ import server.problems
 
 id = 121
 number = 28
-visible = True
+visible = False
 facts = None
 
 solution = '''\
diff --git a/prolog/problems/sorting/isort_2/common.py b/prolog/problems/sorting/isort_2/common.py
index 7b48990..560e3e8 100644
--- a/prolog/problems/sorting/isort_2/common.py
+++ b/prolog/problems/sorting/isort_2/common.py
@@ -6,7 +6,7 @@ import server.problems
 
 id = 123
 number = 30
-visible = True
+visible = False
 facts = None
 
 solution = '''\
diff --git a/prolog/problems/sorting/pivoting_4/common.py b/prolog/problems/sorting/pivoting_4/common.py
index 4dbabcb..17cf270 100644
--- a/prolog/problems/sorting/pivoting_4/common.py
+++ b/prolog/problems/sorting/pivoting_4/common.py
@@ -6,7 +6,7 @@ import server.problems
 
 id = 124
 number = 31
-visible = True
+visible = False
 facts = None
 
 solution = '''\
diff --git a/prolog/problems/sorting/quick_sort_2/common.py b/prolog/problems/sorting/quick_sort_2/common.py
index 25466e2..85ababe 100644
--- a/prolog/problems/sorting/quick_sort_2/common.py
+++ b/prolog/problems/sorting/quick_sort_2/common.py
@@ -6,7 +6,7 @@ import server.problems
 
 id = 125
 number = 32
-visible = True
+visible = False
 facts = None
 
 solution = '''\
diff --git a/prolog/problems/sorting/sins_3/common.py b/prolog/problems/sorting/sins_3/common.py
index a582dc5..a363bac 100644
--- a/prolog/problems/sorting/sins_3/common.py
+++ b/prolog/problems/sorting/sins_3/common.py
@@ -6,7 +6,7 @@ import server.problems
 
 id = 122
 number = 29
-visible = True
+visible = False
 facts = None
 
 solution = '''\
diff --git a/prolog/problems/sorting/slowest_sort_ever_2/common.py b/prolog/problems/sorting/slowest_sort_ever_2/common.py
index 304f491..38f2d1d 100644
--- a/prolog/problems/sorting/slowest_sort_ever_2/common.py
+++ b/prolog/problems/sorting/slowest_sort_ever_2/common.py
@@ -6,7 +6,7 @@ import server.problems
 
 id = 126
 number = 33
-visible = True
+visible = False
 facts = None
 
 solution = '''\