7 files changed, 7 insertions, 7 deletions
diff --git a/prolog/problems/sets/diff_3/common.py b/prolog/problems/sets/diff_3/common.py
index fe21e50..1f00d5c 100644
--- a/prolog/problems/sets/diff_3/common.py
+++ b/prolog/problems/sets/diff_3/common.py
@@ -6,7 +6,7 @@ import server.problems
 
 id = 130
 number = 37
-visible = True
+visible = False
 facts = None
 
 solution = '''\
diff --git a/prolog/problems/sets/intersect_3/common.py b/prolog/problems/sets/intersect_3/common.py
index 1cf2945..afece71 100644
--- a/prolog/problems/sets/intersect_3/common.py
+++ b/prolog/problems/sets/intersect_3/common.py
@@ -6,7 +6,7 @@ import server.problems
 
 id = 129
 number = 36
-visible = True
+visible = False
 facts = None
 
 solution = '''\
diff --git a/prolog/problems/sets/is_subset_2/common.py b/prolog/problems/sets/is_subset_2/common.py
index 696a4a6..9985a9d 100644
--- a/prolog/problems/sets/is_subset_2/common.py
+++ b/prolog/problems/sets/is_subset_2/common.py
@@ -6,7 +6,7 @@ import server.problems
 
 id = 132
 number = 39
-visible = True
+visible = False
 facts = None
 
 solution = '''\
diff --git a/prolog/problems/sets/is_superset_2/common.py b/prolog/problems/sets/is_superset_2/common.py
index 41a0aa3..7a5e373 100644
--- a/prolog/problems/sets/is_superset_2/common.py
+++ b/prolog/problems/sets/is_superset_2/common.py
@@ -6,7 +6,7 @@ import server.problems
 
 id = 131
 number = 38
-visible = True
+visible = False
 facts = None
 
 solution = '''\
diff --git a/prolog/problems/sets/powerset_2/common.py b/prolog/problems/sets/powerset_2/common.py
index aec5cab..1090bfa 100644
--- a/prolog/problems/sets/powerset_2/common.py
+++ b/prolog/problems/sets/powerset_2/common.py
@@ -6,7 +6,7 @@ import server.problems
 
 id = 134
 number = 41
-visible = True
+visible = False
 facts = None
 
 solution = '''\
diff --git a/prolog/problems/sets/subset_2/common.py b/prolog/problems/sets/subset_2/common.py
index 9cf4714..e67c4c4 100644
--- a/prolog/problems/sets/subset_2/common.py
+++ b/prolog/problems/sets/subset_2/common.py
@@ -6,7 +6,7 @@ import server.problems
 
 id = 133
 number = 40
-visible = True
+visible = False
 facts = None
 
 solution = '''\
diff --git a/prolog/problems/sets/union_3/common.py b/prolog/problems/sets/union_3/common.py
index 899d20e..c955fef 100644
--- a/prolog/problems/sets/union_3/common.py
+++ b/prolog/problems/sets/union_3/common.py
@@ -6,7 +6,7 @@ import server.problems
 
 id = 128
 number = 35
-visible = True
+visible = False
 facts = None
 
 solution = '''\