1 files changed, 17 insertions, 0 deletions
diff --git a/prolog/problems/license_plates/checklicenseplate_3/en.py b/prolog/problems/license_plates/checklicenseplate_3/en.py
new file mode 100644
index 0000000..1f3ea94
--- /dev/null
+++ b/prolog/problems/license_plates/checklicenseplate_3/en.py
@@ -0,0 +1,17 @@
+id = 148
+name = 'checkLicensePlate/3'
+slug = 'check if the numbers in a license plate form an equation'
+
+description = '''\
+<p><code>checkLicensePlate(LP, E1, E2)</code>: the digits in the list <code>LP</code> can be combined into a valid equation <code>E1</code> = <code>E2</code>. <code>E1</code> and <code>E2</code> are arithmetic expressions, obtained from sublists of <code>Plate</code> by inserting arithmetic operators (<code>+</code>, <code>-</code>, <code>*</code> and <code>/</code>) between elements. An additional unary minus can be inserted before the leftmost number of <code>E1</code> and <code>E2</code>.</p>
+<pre>
+  ?- checkLicensePlate([l,j,l,3,-,2,1,7], E1, E2).
+    E1 = 3,       E2 = 21/7 ;
+    E1 = -3,      E2 = -21/7 ;
+    E1 = 3*2,     E2 = -1+7 ;
+    E1 = -3*2,    E2 = 1-7 ;
+    E1 = 3*2+1,   E2 = 7 ;
+    E1 = -3*2-1,  E2 = -7.
+</pre>'''
+
+hint = {}