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-rw-r--r--prolog/problems/clp_fd/gcd_3/common.py2
-rw-r--r--prolog/problems/clp_fd/magic_1/common.py2
-rw-r--r--prolog/problems/clp_fd/puzzle_abc_3/common.py2
-rw-r--r--prolog/problems/clp_fd/puzzle_beth_1/common.py2
-rw-r--r--prolog/problems/clp_fd/puzzle_momson_2/common.py2
-rw-r--r--prolog/problems/clp_fd/puzzle_ratio_2/common.py2
-rw-r--r--prolog/problems/clp_fd/tobase_3/common.py2
-rw-r--r--prolog/problems/clp_r/bounding_box_3/common.py2
-rw-r--r--prolog/problems/clp_r/center_3/common.py2
-rw-r--r--prolog/problems/clp_r/linear_opt_3/common.py2
-rw-r--r--prolog/problems/clp_r/max_sum_2/common.py2
-rw-r--r--prolog/problems/clp_r/megabytes_2/common.py2
-rw-r--r--prolog/problems/clp_r/turkey_3/common.py2
-rw-r--r--prolog/problems/dcg/ab_2/common.py2
-rw-r--r--prolog/problems/dcg/digit_2/common.py2
-rw-r--r--prolog/problems/dcg/flower_2/common.py2
-rw-r--r--prolog/problems/dcg/number_2/common.py2
-rw-r--r--prolog/problems/dcg/number_3/common.py2
-rw-r--r--prolog/problems/dcg/number_proper_2/common.py2
-rw-r--r--prolog/problems/dcg/paren_2/common.py2
-rw-r--r--prolog/problems/dcg/paren_3/common.py2
-rw-r--r--prolog/problems/license_plates/checklicenseplate_3/common.py2
-rw-r--r--prolog/problems/license_plates/firstminus_2/common.py2
-rw-r--r--prolog/problems/license_plates/genexp_2/common.py2
-rw-r--r--prolog/problems/license_plates/getdigits_2/common.py2
-rw-r--r--prolog/problems/license_plates/joindigits_2/common.py2
-rw-r--r--prolog/problems/lists/conc_3/common.py2
-rw-r--r--prolog/problems/lists/count_3/common.py2
-rw-r--r--prolog/problems/lists/del_3/common.py2
-rw-r--r--prolog/problems/lists/divide_3/common.py2
-rw-r--r--prolog/problems/lists/dup_2/common.py2
-rw-r--r--prolog/problems/lists/evenlen_1_+_oddlen_1/common.py2
-rw-r--r--prolog/problems/lists/insert_3/common.py2
-rw-r--r--prolog/problems/lists/len_2/common.py2
-rw-r--r--prolog/problems/lists/max_2/common.py2
-rw-r--r--prolog/problems/lists/memb_2/common.py2
-rw-r--r--prolog/problems/lists/min_2/common.py2
-rw-r--r--prolog/problems/lists/palindrome_1/common.py2
-rw-r--r--prolog/problems/lists/permute_2/common.py2
-rw-r--r--prolog/problems/lists/rev_2/common.py2
-rw-r--r--prolog/problems/lists/shiftleft_2/common.py2
-rw-r--r--prolog/problems/lists/shiftright_2/common.py2
-rw-r--r--prolog/problems/lists/sublist_2/common.py2
-rw-r--r--prolog/problems/lists/sum_2/common.py2
-rw-r--r--prolog/problems/sets/diff_3/common.py2
-rw-r--r--prolog/problems/sets/intersect_3/common.py2
-rw-r--r--prolog/problems/sets/is_subset_2/common.py2
-rw-r--r--prolog/problems/sets/is_superset_2/common.py2
-rw-r--r--prolog/problems/sets/powerset_2/common.py2
-rw-r--r--prolog/problems/sets/subset_2/common.py2
-rw-r--r--prolog/problems/sets/union_3/common.py2
-rw-r--r--prolog/problems/sorting/is_sorted_1/common.py2
-rw-r--r--prolog/problems/sorting/isort_2/common.py2
-rw-r--r--prolog/problems/sorting/pivoting_4/common.py2
-rw-r--r--prolog/problems/sorting/quick_sort_2/common.py2
-rw-r--r--prolog/problems/sorting/sins_3/common.py2
-rw-r--r--prolog/problems/sorting/slowest_sort_ever_2/common.py2
57 files changed, 57 insertions, 57 deletions
diff --git a/prolog/problems/clp_fd/gcd_3/common.py b/prolog/problems/clp_fd/gcd_3/common.py
index 5048a73..627431c 100644
--- a/prolog/problems/clp_fd/gcd_3/common.py
+++ b/prolog/problems/clp_fd/gcd_3/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 149
number = 61
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/clp_fd/magic_1/common.py b/prolog/problems/clp_fd/magic_1/common.py
index c9e89c7..423efc0 100644
--- a/prolog/problems/clp_fd/magic_1/common.py
+++ b/prolog/problems/clp_fd/magic_1/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 151
number = 60
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/clp_fd/puzzle_abc_3/common.py b/prolog/problems/clp_fd/puzzle_abc_3/common.py
index 74275e9..fcaec95 100644
--- a/prolog/problems/clp_fd/puzzle_abc_3/common.py
+++ b/prolog/problems/clp_fd/puzzle_abc_3/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 153
number = 57
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/clp_fd/puzzle_beth_1/common.py b/prolog/problems/clp_fd/puzzle_beth_1/common.py
index 50bdf08..870b476 100644
--- a/prolog/problems/clp_fd/puzzle_beth_1/common.py
+++ b/prolog/problems/clp_fd/puzzle_beth_1/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 155
number = 56
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/clp_fd/puzzle_momson_2/common.py b/prolog/problems/clp_fd/puzzle_momson_2/common.py
index cd423fb..c3d734d 100644
--- a/prolog/problems/clp_fd/puzzle_momson_2/common.py
+++ b/prolog/problems/clp_fd/puzzle_momson_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 152
number = 58
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/clp_fd/puzzle_ratio_2/common.py b/prolog/problems/clp_fd/puzzle_ratio_2/common.py
index d62a15f..77613d1 100644
--- a/prolog/problems/clp_fd/puzzle_ratio_2/common.py
+++ b/prolog/problems/clp_fd/puzzle_ratio_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 154
number = 59
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/clp_fd/tobase_3/common.py b/prolog/problems/clp_fd/tobase_3/common.py
index e358210..a31d773 100644
--- a/prolog/problems/clp_fd/tobase_3/common.py
+++ b/prolog/problems/clp_fd/tobase_3/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 150
number = 62
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/clp_r/bounding_box_3/common.py b/prolog/problems/clp_r/bounding_box_3/common.py
index 94be5ee..eb2ac0a 100644
--- a/prolog/problems/clp_r/bounding_box_3/common.py
+++ b/prolog/problems/clp_r/bounding_box_3/common.py
@@ -2,7 +2,7 @@
id = 157
number = 67
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/clp_r/center_3/common.py b/prolog/problems/clp_r/center_3/common.py
index 5391180..856194d 100644
--- a/prolog/problems/clp_r/center_3/common.py
+++ b/prolog/problems/clp_r/center_3/common.py
@@ -2,7 +2,7 @@
id = 158
number = 68
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/clp_r/linear_opt_3/common.py b/prolog/problems/clp_r/linear_opt_3/common.py
index f6e8840..cf2dd5e 100644
--- a/prolog/problems/clp_r/linear_opt_3/common.py
+++ b/prolog/problems/clp_r/linear_opt_3/common.py
@@ -2,7 +2,7 @@
id = 159
number = 63
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/clp_r/max_sum_2/common.py b/prolog/problems/clp_r/max_sum_2/common.py
index d025090..3f90b40 100644
--- a/prolog/problems/clp_r/max_sum_2/common.py
+++ b/prolog/problems/clp_r/max_sum_2/common.py
@@ -2,7 +2,7 @@
id = 156
number = 66
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/clp_r/megabytes_2/common.py b/prolog/problems/clp_r/megabytes_2/common.py
index 1f5bdd5..1cedd38 100644
--- a/prolog/problems/clp_r/megabytes_2/common.py
+++ b/prolog/problems/clp_r/megabytes_2/common.py
@@ -2,7 +2,7 @@
id = 160
number = 65
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/clp_r/turkey_3/common.py b/prolog/problems/clp_r/turkey_3/common.py
index b7bc7f4..0fde5a8 100644
--- a/prolog/problems/clp_r/turkey_3/common.py
+++ b/prolog/problems/clp_r/turkey_3/common.py
@@ -2,7 +2,7 @@
id = 161
number = 64
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/dcg/ab_2/common.py b/prolog/problems/dcg/ab_2/common.py
index b9109fc..e562c1b 100644
--- a/prolog/problems/dcg/ab_2/common.py
+++ b/prolog/problems/dcg/ab_2/common.py
@@ -2,7 +2,7 @@
id = 162
number = 69
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/dcg/digit_2/common.py b/prolog/problems/dcg/digit_2/common.py
index 571df40..e56e563 100644
--- a/prolog/problems/dcg/digit_2/common.py
+++ b/prolog/problems/dcg/digit_2/common.py
@@ -2,7 +2,7 @@
id = 164
number = 71
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/dcg/flower_2/common.py b/prolog/problems/dcg/flower_2/common.py
index e28d10d..9d6f92e 100644
--- a/prolog/problems/dcg/flower_2/common.py
+++ b/prolog/problems/dcg/flower_2/common.py
@@ -2,7 +2,7 @@
id = 163
number = 70
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/dcg/number_2/common.py b/prolog/problems/dcg/number_2/common.py
index a05ca18..b0659a6 100644
--- a/prolog/problems/dcg/number_2/common.py
+++ b/prolog/problems/dcg/number_2/common.py
@@ -2,7 +2,7 @@
id = 165
number = 72
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/dcg/number_3/common.py b/prolog/problems/dcg/number_3/common.py
index 2977392..7c3daf1 100644
--- a/prolog/problems/dcg/number_3/common.py
+++ b/prolog/problems/dcg/number_3/common.py
@@ -2,7 +2,7 @@
id = 167
number = 74
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/dcg/number_proper_2/common.py b/prolog/problems/dcg/number_proper_2/common.py
index a3e3592..2779539 100644
--- a/prolog/problems/dcg/number_proper_2/common.py
+++ b/prolog/problems/dcg/number_proper_2/common.py
@@ -2,7 +2,7 @@
id = 166
number = 73
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/dcg/paren_2/common.py b/prolog/problems/dcg/paren_2/common.py
index 1d8f653..63ecd2f 100644
--- a/prolog/problems/dcg/paren_2/common.py
+++ b/prolog/problems/dcg/paren_2/common.py
@@ -2,7 +2,7 @@
id = 168
number = 75
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/dcg/paren_3/common.py b/prolog/problems/dcg/paren_3/common.py
index a905149..a3cb6d3 100644
--- a/prolog/problems/dcg/paren_3/common.py
+++ b/prolog/problems/dcg/paren_3/common.py
@@ -2,7 +2,7 @@
id = 169
number = 76
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/license_plates/checklicenseplate_3/common.py b/prolog/problems/license_plates/checklicenseplate_3/common.py
index 3a403d2..9f13afc 100644
--- a/prolog/problems/license_plates/checklicenseplate_3/common.py
+++ b/prolog/problems/license_plates/checklicenseplate_3/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 148
number = 55
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/license_plates/firstminus_2/common.py b/prolog/problems/license_plates/firstminus_2/common.py
index dd967b6..39fee17 100644
--- a/prolog/problems/license_plates/firstminus_2/common.py
+++ b/prolog/problems/license_plates/firstminus_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 147
number = 54
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/license_plates/genexp_2/common.py b/prolog/problems/license_plates/genexp_2/common.py
index 4e2ebdf..99b078b 100644
--- a/prolog/problems/license_plates/genexp_2/common.py
+++ b/prolog/problems/license_plates/genexp_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 146
number = 53
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/license_plates/getdigits_2/common.py b/prolog/problems/license_plates/getdigits_2/common.py
index 33c45c6..d024c0a 100644
--- a/prolog/problems/license_plates/getdigits_2/common.py
+++ b/prolog/problems/license_plates/getdigits_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 144
number = 51
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/license_plates/joindigits_2/common.py b/prolog/problems/license_plates/joindigits_2/common.py
index ed284e7..d84b85e 100644
--- a/prolog/problems/license_plates/joindigits_2/common.py
+++ b/prolog/problems/license_plates/joindigits_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 145
number = 52
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/conc_3/common.py b/prolog/problems/lists/conc_3/common.py
index 82b700f..0c5312f 100644
--- a/prolog/problems/lists/conc_3/common.py
+++ b/prolog/problems/lists/conc_3/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 104
number = 12
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/count_3/common.py b/prolog/problems/lists/count_3/common.py
index 0f4f171..2953f06 100644
--- a/prolog/problems/lists/count_3/common.py
+++ b/prolog/problems/lists/count_3/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 120
number = 27
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/del_3/common.py b/prolog/problems/lists/del_3/common.py
index f19146f..23caf08 100644
--- a/prolog/problems/lists/del_3/common.py
+++ b/prolog/problems/lists/del_3/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 105
number = 11
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/divide_3/common.py b/prolog/problems/lists/divide_3/common.py
index 25959aa..969cdec 100644
--- a/prolog/problems/lists/divide_3/common.py
+++ b/prolog/problems/lists/divide_3/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 115
number = 22
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/dup_2/common.py b/prolog/problems/lists/dup_2/common.py
index 3697fa6..4153533 100644
--- a/prolog/problems/lists/dup_2/common.py
+++ b/prolog/problems/lists/dup_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 110
number = 17
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/evenlen_1_+_oddlen_1/common.py b/prolog/problems/lists/evenlen_1_+_oddlen_1/common.py
index 846ae95..1236551 100644
--- a/prolog/problems/lists/evenlen_1_+_oddlen_1/common.py
+++ b/prolog/problems/lists/evenlen_1_+_oddlen_1/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 116
number = 23
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/insert_3/common.py b/prolog/problems/lists/insert_3/common.py
index 281d10c..be4da78 100644
--- a/prolog/problems/lists/insert_3/common.py
+++ b/prolog/problems/lists/insert_3/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 106
number = 13
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/len_2/common.py b/prolog/problems/lists/len_2/common.py
index edcbe41..93a1faa 100644
--- a/prolog/problems/lists/len_2/common.py
+++ b/prolog/problems/lists/len_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 119
number = 26
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/max_2/common.py b/prolog/problems/lists/max_2/common.py
index 5187df3..92cf793 100644
--- a/prolog/problems/lists/max_2/common.py
+++ b/prolog/problems/lists/max_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 109
number = 16
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/memb_2/common.py b/prolog/problems/lists/memb_2/common.py
index b258731..c3f4dde 100644
--- a/prolog/problems/lists/memb_2/common.py
+++ b/prolog/problems/lists/memb_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 103
number = 10
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/min_2/common.py b/prolog/problems/lists/min_2/common.py
index 39ffe89..213da5a 100644
--- a/prolog/problems/lists/min_2/common.py
+++ b/prolog/problems/lists/min_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 108
number = 15
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/palindrome_1/common.py b/prolog/problems/lists/palindrome_1/common.py
index df7b2c0..e9960c6 100644
--- a/prolog/problems/lists/palindrome_1/common.py
+++ b/prolog/problems/lists/palindrome_1/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 112
number = 19
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/permute_2/common.py b/prolog/problems/lists/permute_2/common.py
index 6a3cc7f..c6381c2 100644
--- a/prolog/problems/lists/permute_2/common.py
+++ b/prolog/problems/lists/permute_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 107
number = 14
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/rev_2/common.py b/prolog/problems/lists/rev_2/common.py
index b34a2fa..408389a 100644
--- a/prolog/problems/lists/rev_2/common.py
+++ b/prolog/problems/lists/rev_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 111
number = 18
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/shiftleft_2/common.py b/prolog/problems/lists/shiftleft_2/common.py
index 0d1c224..13db28f 100644
--- a/prolog/problems/lists/shiftleft_2/common.py
+++ b/prolog/problems/lists/shiftleft_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 113
number = 20
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/shiftright_2/common.py b/prolog/problems/lists/shiftright_2/common.py
index 728bae9..d8a4c9f 100644
--- a/prolog/problems/lists/shiftright_2/common.py
+++ b/prolog/problems/lists/shiftright_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 114
number = 21
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/sublist_2/common.py b/prolog/problems/lists/sublist_2/common.py
index 73e70ef..6187ebc 100644
--- a/prolog/problems/lists/sublist_2/common.py
+++ b/prolog/problems/lists/sublist_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 117
number = 24
-visible = True
+visible = False
facts = None
solution = '''\
diff --git a/prolog/problems/lists/sum_2/common.py b/prolog/problems/lists/sum_2/common.py
index 559b18f..000b4b0 100644
--- a/prolog/problems/lists/sum_2/common.py
+++ b/prolog/problems/lists/sum_2/common.py
@@ -6,7 +6,7 @@ import server.problems
id = 118
number = 25
-visible = True
+visible = False
facts = None
solution = '''\
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 = '''\
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 = '''\