diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..33ef30c
Binary files /dev/null and b/.DS_Store differ
diff --git a/contracts/Game1.sol b/contracts/Game1.sol
index b06a2b5..b8aeb0e 100644
--- a/contracts/Game1.sol
+++ b/contracts/Game1.sol
@@ -1,5 +1,6 @@
 //SPDX-License-Identifier: Unlicense
 pragma solidity ^0.7.0;
+import "hardhat/console.sol";
 
 contract Game1 {
   bool public isWon;
diff --git a/contracts/Game2.sol b/contracts/Game2.sol
index fe61893..8d80eac 100644
--- a/contracts/Game2.sol
+++ b/contracts/Game2.sol
@@ -1,5 +1,6 @@
 //SPDX-License-Identifier: Unlicense
 pragma solidity ^0.7.0;
+import "hardhat/console.sol";
 
 contract Game2 {
   bool public isWon;
diff --git a/contracts/Game4.sol b/contracts/Game4.sol
index 3d356a2..5a1ffc0 100644
--- a/contracts/Game4.sol
+++ b/contracts/Game4.sol
@@ -1,5 +1,6 @@
 //SPDX-License-Identifier: Unlicense
 pragma solidity ^0.7.0;
+import "hardhat/console.sol";
 
 contract Game4 {
   bool public isWon;
diff --git a/test/game1Test.js b/test/game1Test.js
index 57d7506..01b7688 100644
--- a/test/game1Test.js
+++ b/test/game1Test.js
@@ -1,16 +1,17 @@
 const { assert } = require("chai");
 
 describe("Game1", function() {
-  it("should be a winner", async function() {
-    const Game = await ethers.getContractFactory("Game1");
-    const game = await Game.deploy();
-    await game.deployed();
+    it("should be a winner", async function() {
+        const Game = await ethers.getContractFactory("Game1");
+        const game = await Game.deploy();
+        await game.deployed();
 
-    // you must call unlock before you can win
+        // you must call unlock before you can win
+        await game.unlock();
 
-    await game.win();
+        await game.win();
 
-    // leave this assertion as-is
-    assert(await game.isWon(), "You did not win the game");
-  });
-});
+        // leave this assertion as-is
+        assert(await game.isWon(), "You did not win the game");
+    });
+});
\ No newline at end of file
diff --git a/test/game2Test.js b/test/game2Test.js
index f92dc83..22eb37a 100644
--- a/test/game2Test.js
+++ b/test/game2Test.js
@@ -1,16 +1,19 @@
 const { assert } = require("chai");
 
 describe("Game2", function() {
-  it("should be a winner", async function() {
-    const Game = await ethers.getContractFactory("Game2");
-    const game = await Game.deploy();
-    await game.deployed();
+    it("should be a winner", async function() {
+        const Game = await ethers.getContractFactory("Game2");
+        const game = await Game.deploy();
+        await game.deployed();
 
-    // press all the right switches to win this stage
+        // press all the right switches to win this stage
+        game.switchOn(20);
+        game.switchOn(47);
+        game.switchOn(212);
 
-    await game.win();
+        await game.win();
 
-    // leave this assertion as-is
-    assert(await game.isWon(), "You did not win the game");
-  });
-});
+        // leave this assertion as-is
+        assert(await game.isWon(), "You did not win the game");
+    });
+});
\ No newline at end of file
diff --git a/test/game3Test.js b/test/game3Test.js
index b2e3003..0ae2de5 100644
--- a/test/game3Test.js
+++ b/test/game3Test.js
@@ -1,27 +1,36 @@
 const { assert } = require("chai");
+const { ethers } = require("hardhat");
 
 describe("Game3", function() {
-  it("should be a winner", async function() {
-    const Game = await ethers.getContractFactory("Game3");
-    const game = await Game.deploy();
-    await game.deployed();
-
-    // three addresses, three balances
-    // you'll need to update the mapping to win this stage
-
-    // hardhat will create 10 accounts for you by default
-    // you can get one of this accounts with ethers.provider.getSigner
-    // and passing in the zero-based indexed of the signer you want:
-    const signer = ethers.provider.getSigner(0);
-    const address = await signer.getAddress();
-
-    // to call a contract as a signer you can use contract.connect
-    await game.connect(signer).buy({ value: "1" });
-
-    // TODO: win expects three arguments
-    await game.win();
-
-    // leave this assertion as-is
-    assert(await game.isWon(), "You did not win the game");
-  });
-});
+    it("should be a winner", async function() {
+        const Game = await ethers.getContractFactory("Game3");
+        const game = await Game.deploy();
+        await game.deployed();
+
+        // three addresses, three balances
+        // you'll need to update the mapping to win this stage
+
+        // hardhat will create 10 accounts for you by default
+        // you can get one of this accounts with ethers.provider.getSigner
+        // and passing in the zero-based indexed of the signer you want:
+        const signer1 = ethers.provider.getSigner(0);
+        const address1 = await signer1.getAddress();
+
+        const signer2 = ethers.provider.getSigner(1);
+        const address2 = await signer2.getAddress();
+
+        const signer3 = ethers.provider.getSigner(2);
+        const address3 = await signer3.getAddress();
+
+        // to call a contract as a signer you can use contract.connect
+        await game.connect(signer1).buy({ value: "5" });
+        await game.connect(signer2).buy({ value: "10" });
+        await game.connect(signer3).buy({ value: "1" });
+
+        // TODO: win expects three arguments
+        await game.win(address1, address2, address3);
+
+        // leave this assertion as-is
+        assert(await game.isWon(), "You did not win the game");
+    });
+});
\ No newline at end of file
diff --git a/test/game4Test.js b/test/game4Test.js
index dab5b45..12422f6 100644
--- a/test/game4Test.js
+++ b/test/game4Test.js
@@ -1,16 +1,22 @@
 const { assert } = require("chai");
 
 describe("Game4", function() {
-  it("should be a winner", async function() {
-    const Game = await ethers.getContractFactory("Game4");
-    const game = await Game.deploy();
-    await game.deployed();
+    it("should be a winner", async function() {
+        const Game = await ethers.getContractFactory("Game4");
+        const game = await Game.deploy();
+        await game.deployed();
 
-    // nested mappings are rough :}
+        // nested mappings are rough :}
+        const signer1 = ethers.provider.getSigner(0);
+        const address1 = await signer1.getAddress();
 
-    await game.win();
+        const signer2 = ethers.provider.getSigner(1);
+        const address2 = await signer2.getAddress();
 
-    // leave this assertion as-is
-    assert(await game.isWon(), "You did not win the game");
-  });
-});
+        await game.connect(signer1).write(address2);
+        await game.connect(signer2).win(address1);
+
+        // leave this assertion as-is
+        assert(await game.isWon(), "You did not win the game");
+    });
+});
\ No newline at end of file
diff --git a/test/game5Test.js b/test/game5Test.js
index aeeb41c..3b948c1 100644
--- a/test/game5Test.js
+++ b/test/game5Test.js
@@ -1,16 +1,34 @@
 const { assert } = require("chai");
+const { Signer } = require("ethers");
+const { ethers } = require("hardhat");
 
 describe("Game5", function() {
-  it("should be a winner", async function() {
-    const Game = await ethers.getContractFactory("Game5");
-    const game = await Game.deploy();
-    await game.deployed();
+    it("should be a winner", async function() {
+        const Game = await ethers.getContractFactory("Game5");
+        const game = await Game.deploy();
+        await game.deployed();
 
-    // good luck
+        // good luck
+        const threshold = 0x00FfFFfFFFfFFFFFfFfFfffFFFfffFfFffFfFFFf;
+        let validAddress;
+        while (!validAddress) {
+            wallet = ethers.Wallet.createRandom();
+            address = await wallet.getAddress();
+            if (address < threshold) {
+                validAddress = true;
+            }
+        };
 
-    await game.win();
+        wallet = wallet.connect(ethers.provider);
+        const signer = ethers.provider.getSigner(0);
+        await signer.sendTransaction({
+            to: address,
+            value: ethers.utils.parseEther("100")
+        });
 
-    // leave this assertion as-is
-    assert(await game.isWon(), "You did not win the game");
-  });
-});
+        await game.connect(wallet).win();
+
+        // leave this assertion as-is
+        assert(await game.isWon(), "You did not win the game");
+    });
+});
\ No newline at end of file