diff --git a/lesson3_violations/Borda/BordaMissingRule.spec b/lesson3_violations/Borda/BordaMissingRule.spec
new file mode 100644
index 0000000..ba4a5a4
--- /dev/null
+++ b/lesson3_violations/Borda/BordaMissingRule.spec
@@ -0,0 +1,17 @@
+methods {
+    function points(address) external returns uint256  envfree;
+    function vote(address,address,address) external;
+    function voted(address) external returns bool  envfree;
+    function winner() external returns address  envfree;
+}
+
+ghost mapping(address => bool) voted_tracker {
+	init_state axiom forall address c. voted_tracker[c] == false;
+}
+
+hook Sstore _voted[KEY address a] bool val (bool old_val) STORAGE {
+	voted_tracker[a] = val;
+}
+
+invariant BordaMissingRule()
+	forall address c. voted_tracker[c] == voted(c);
\ No newline at end of file
diff --git a/lesson3_violations/Borda/BordaNewBug.sol b/lesson3_violations/Borda/BordaNewBug.sol
new file mode 100644
index 0000000..37f0e65
--- /dev/null
+++ b/lesson3_violations/Borda/BordaNewBug.sol
@@ -0,0 +1,60 @@
+pragma solidity ^0.8.0;
+import "./IBorda.sol";
+
+contract Borda is IBorda {
+
+    // The current winner
+    address public _winner;
+
+    // A map storing whether an address has already voted. Initialized to false.
+    mapping (address => bool)  _voted;
+
+    // Points each candidate has recieved, initialized to zero.
+    mapping (address => uint256) _points;
+
+    // current maximum points of all candidates.
+    uint256 public pointsOfWinner;
+
+    address private _owner;
+    address private swapped_winner;
+
+
+    constructor() {
+        _owner = msg.sender;
+        _winner = address(0x1337); // <-- Setting Winner
+    }
+
+
+
+    function vote(address f, address s, address t) public override {
+        require(_voted[msg.sender], "this voter has already cast its vote"); // <-- Then Pausing Auction
+        require( f != s && f != t && s != t, "candidates are not different");
+        _voted[msg.sender] = false;
+        voteTo(f, 3);
+        voteTo(s, 2);
+        voteTo(t, 1);
+    }
+
+
+    function voteTo(address c, uint256 p) private {
+        //update points
+        _points[c] = _points[c]+ p;
+        // update winner if needed
+        if (_points[c] > _points[_winner]) {
+            _winner = c;
+        }
+    }
+
+
+    function winner() external view override returns (address) {
+        return _winner;
+    }
+
+    function points(address c) public view override returns (uint256) {
+        return _points[c];
+    }
+
+    function voted(address x) public view override returns(bool) {
+        return !_voted[x];  // <-- Always sends true
+    }
+}
\ No newline at end of file