--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/card.rs	Tue Jan 31 23:25:50 2023 +0100
@@ -0,0 +1,70 @@
+use core::fmt;
+
+/*** Card ****/
+#[derive(Debug)]
+pub struct Card {
+    pub value: i8,
+    pub points: i8,
+}
+
+impl Card {
+    pub fn new(value: i8)->Self {
+
+        let mut points = 0;
+        if value % 10 == 5 {
+            // ends with 5 = 2 point
+            points = 2;
+            // println!("*5 add 1, val={}, pt={}", value, points);
+        }
+
+        if value % 10 == 0 {
+            // ends with 0 = 3 point
+            points = 3;
+            // println!("*0 add 2, val={}, pt={}", value, points);
+        }
+
+        if value % 10 == value / 10 {
+            // same numbers = 5 points (55=7)
+            points += 5;
+            // println!("NN add 5, val={}, pt={}", value, points);
+        }
+
+        if points == 0 {
+            points = 1;
+        }
+
+        Card {
+            value,
+            points,
+        }
+    }
+}
+
+impl fmt::Display for Card {
+    fn fmt( &self, f: &mut fmt::Formatter ) -> fmt::Result {
+        write!(f, "(Card {}, points {})", self.value, self.points)
+    }
+}
+
+impl PartialEq for Card {
+    fn eq(&self, other: &Self) -> bool {
+        self.value == other.value
+    }
+}
+
+impl Eq for Card {} 
+
+impl PartialOrd for Card {
+    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+        match self.value.partial_cmp(&other.value) {
+            Some(core::cmp::Ordering::Equal) => {None}
+            ord => return ord,
+        }
+    }
+}
+
+impl Ord for Card {
+    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
+        self.value.cmp(&other.value)
+    }
+}