diff --git a/package-lock.json b/package-lock.json
index a88f918ef..eca1d40ee 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -188,6 +188,7 @@
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       "dev": true,
+      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -221,10 +222,11 @@
       }
     },
     "node_modules/ansi-colors": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-4.1.1.tgz",
-      "integrity": "sha512-JoX0apGbHaUJBNl6yF+p6JAFYZ666/hhCGKN5t9QFjbJQKUU/g8MNbFDbvfrgKXvI1QpZplPOnwIo99lX/AAmA==",
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-4.1.3.tgz",
+      "integrity": "sha512-/6w/C21Pm1A7aZitlI5Ni/2J6FFQN8i1Cvz3kHABAAbw93v/NlvKdVOqz7CCWz/3iv/JplRSEEZ83XION15ovw==",
       "dev": true,
+      "license": "MIT",
       "engines": {
         "node": ">=6"
       }
@@ -439,12 +441,13 @@
       }
     },
     "node_modules/braces": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
-      "integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.3.tgz",
+      "integrity": "sha512-yQbXgO/OSZVD2IsiLlro+7Hf6Q18EJrKSEsdoMzKePKXct3gvD8oLcOQdIzGupr5Fj+EDe8gO/lxc1BzfMpxvA==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
-        "fill-range": "^7.0.1"
+        "fill-range": "^7.1.1"
       },
       "engines": {
         "node": ">=8"
@@ -591,10 +594,11 @@
       "dev": true
     },
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-      "version": "7.0.3",
-      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",
-      "integrity": "sha512-iRDPJKUPVEND7dHPO8rkbOnPpyDygcDFtWjpeWNCgy8WP2rXcxXL8TskReQl6OrB2G7+UJrags1q15Fudc7G6w==",
+      "version": "7.0.6",
+      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",
+      "integrity": "sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "path-key": "^3.1.0",
         "shebang-command": "^2.0.0",
@@ -605,12 +609,13 @@
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-      "version": "4.3.4",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
-      "integrity": "sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==",
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.0.tgz",
+      "integrity": "sha512-6WTZ/IxCY/T6BALoZHaE4ctp9xm+Z5kY/pzYaCHRFeyVhojxlrm+46y68HA6hr0TcwEssoxNiDEUJQjfPZ/RYA==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
-        "ms": "2.1.2"
+        "ms": "^2.1.3"
       },
       "engines": {
         "node": ">=6.0"
@@ -717,10 +722,11 @@
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     "node_modules/diff": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/diff/-/diff-5.0.0.tgz",
-      "integrity": "sha512-/VTCrvm5Z0JGty/BWHljh+BAiw3IK+2j87NGMu8Nwc/f48WoDAC395uomO9ZD117ZOBaHmkX1oyLvkVM/aIT3w==",
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-5.2.0.tgz",
+      "integrity": "sha512-uIFDxqpRZGZ6ThOk84hEfqWoHx2devRFvpTZcTHur85vImfaxUbTW9Ryh4CpCuDnToOP1CEtXKIgytHBPVff5A==",
       "dev": true,
+      "license": "BSD-3-Clause",
       "engines": {
         "node": ">=0.3.1"
       }
@@ -862,6 +868,7 @@
       "resolved": "https://registry.npmjs.org/eslint/-/eslint-8.53.0.tgz",
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       "dev": true,
+      "peer": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.2.0",
         "@eslint-community/regexpp": "^4.6.1",
@@ -994,6 +1001,7 @@
       "resolved": "https://registry.npmjs.org/eslint-plugin-import/-/eslint-plugin-import-2.29.0.tgz",
       "integrity": "sha512-QPOO5NO6Odv5lpoTkddtutccQjysJuFxoPS7fAHO+9m9udNHvTCPSAMW9zGAYj8lAIdr40I8yPCdUYrncXtrwg==",
       "dev": true,
+      "peer": true,
       "dependencies": {
         "array-includes": "^3.1.7",
         "array.prototype.findlastindex": "^1.2.3",
@@ -1254,10 +1262,11 @@
       }
     },
     "node_modules/fill-range": {
-      "version": "7.0.1",
-      "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz",
-      "integrity": "sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==",
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.1.1.tgz",
+      "integrity": "sha512-YsGpe3WHLK8ZYi4tWDg2Jy3ebRz2rXowDxnld4bkQB00cc/1Zw9AWnC0i9ztDJitivtQvaI9KaLyKrc+hBW0yg==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "to-regex-range": "^5.0.1"
       },
@@ -1843,6 +1852,7 @@
       "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
       "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
       "dev": true,
+      "license": "MIT",
       "engines": {
         "node": ">=0.12.0"
       }
@@ -2145,12 +2155,13 @@
       }
     },
     "node_modules/micromatch": {
-      "version": "4.0.5",
-      "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-4.0.5.tgz",
-      "integrity": "sha512-DMy+ERcEW2q8Z2Po+WNXuw3c5YaUSFjAO5GsJqfEl7UjvtIuFKO6ZrKvcItdy98dwFI2N1tg3zNIdKaQT+aNdA==",
+      "version": "4.0.8",
+      "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-4.0.8.tgz",
+      "integrity": "sha512-PXwfBhYu0hBCPw8Dn0E+WDYb7af3dSLVWKi3HGv84IdF4TyFoC0ysxFd0Goxw7nSv4T/PzEJQxsYsEiFCKo2BA==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
-        "braces": "^3.0.2",
+        "braces": "^3.0.3",
         "picomatch": "^2.3.1"
       },
       "engines": {
@@ -2191,32 +2202,32 @@
       }
     },
     "node_modules/mocha": {
-      "version": "10.2.0",
-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-10.2.0.tgz",
-      "integrity": "sha512-IDY7fl/BecMwFHzoqF2sg/SHHANeBoMMXFlS9r0OXKDssYE1M5O43wUY/9BVPeIvfH2zmEbBfseqN9gBQZzXkg==",
-      "dev": true,
-      "dependencies": {
-        "ansi-colors": "4.1.1",
-        "browser-stdout": "1.3.1",
-        "chokidar": "3.5.3",
-        "debug": "4.3.4",
-        "diff": "5.0.0",
-        "escape-string-regexp": "4.0.0",
-        "find-up": "5.0.0",
-        "glob": "7.2.0",
-        "he": "1.2.0",
-        "js-yaml": "4.1.0",
-        "log-symbols": "4.1.0",
-        "minimatch": "5.0.1",
-        "ms": "2.1.3",
-        "nanoid": "3.3.3",
-        "serialize-javascript": "6.0.0",
-        "strip-json-comments": "3.1.1",
-        "supports-color": "8.1.1",
-        "workerpool": "6.2.1",
-        "yargs": "16.2.0",
-        "yargs-parser": "20.2.4",
-        "yargs-unparser": "2.0.0"
+      "version": "10.8.2",
+      "resolved": "https://registry.npmjs.org/mocha/-/mocha-10.8.2.tgz",
+      "integrity": "sha512-VZlYo/WE8t1tstuRmqgeyBgCbJc/lEdopaa+axcKzTBJ+UIdlAB9XnmvTCAH4pwR4ElNInaedhEBmZD8iCSVEg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-colors": "^4.1.3",
+        "browser-stdout": "^1.3.1",
+        "chokidar": "^3.5.3",
+        "debug": "^4.3.5",
+        "diff": "^5.2.0",
+        "escape-string-regexp": "^4.0.0",
+        "find-up": "^5.0.0",
+        "glob": "^8.1.0",
+        "he": "^1.2.0",
+        "js-yaml": "^4.1.0",
+        "log-symbols": "^4.1.0",
+        "minimatch": "^5.1.6",
+        "ms": "^2.1.3",
+        "serialize-javascript": "^6.0.2",
+        "strip-json-comments": "^3.1.1",
+        "supports-color": "^8.1.1",
+        "workerpool": "^6.5.1",
+        "yargs": "^16.2.0",
+        "yargs-parser": "^20.2.9",
+        "yargs-unparser": "^2.0.0"
       },
       "bin": {
         "_mocha": "bin/_mocha",
@@ -2224,10 +2235,6 @@
       },
       "engines": {
         "node": ">= 14.0.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/mochajs"
       }
     },
     "node_modules/mocha/node_modules/brace-expansion": {
@@ -2235,15 +2242,38 @@
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.0.1.tgz",
       "integrity": "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "balanced-match": "^1.0.0"
       }
     },
+    "node_modules/mocha/node_modules/glob": {
+      "version": "8.1.0",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-8.1.0.tgz",
+      "integrity": "sha512-r8hpEjiQEYlF2QU0df3dS+nxxSIreXQS1qRhMJM0Q5NDdR386C7jb7Hwwod8Fgiuex+k0GFjgft18yvxm5XoCQ==",
+      "deprecated": "Glob versions prior to v9 are no longer supported",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^5.0.1",
+        "once": "^1.3.0"
+      },
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
     "node_modules/mocha/node_modules/minimatch": {
-      "version": "5.0.1",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-5.0.1.tgz",
-      "integrity": "sha512-nLDxIFRyhDblz3qMuq+SoRZED4+miJ/G+tdDrjkkkRnjAsBexeGpgjLEQ0blJy7rHhR2b93rhQY4SvyWu9v03g==",
+      "version": "5.1.6",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-5.1.6.tgz",
+      "integrity": "sha512-lKwV/1brpG6mBUFHtb7NUmtABCb2WZZmm2wNiOA5hAb8VdCS4B3dtMWyvcoViccwAW/COERjXLt0zP1zXUN26g==",
       "dev": true,
+      "license": "ISC",
       "dependencies": {
         "brace-expansion": "^2.0.1"
       },
@@ -2251,12 +2281,6 @@
         "node": ">=10"
       }
     },
-    "node_modules/mocha/node_modules/ms": {
-      "version": "2.1.3",
-      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
-      "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
-      "dev": true
-    },
     "node_modules/mocha/node_modules/supports-color": {
       "version": "8.1.1",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-8.1.1.tgz",
@@ -2273,22 +2297,11 @@
       }
     },
     "node_modules/ms": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
-      "dev": true
-    },
-    "node_modules/nanoid": {
-      "version": "3.3.3",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.3.tgz",
-      "integrity": "sha512-p1sjXuopFs0xg+fPASzQ28agW1oHD7xDsd9Xkf3T15H3c/cifrFHVwrh74PdoklAPi+i7MdRsE47vm2r6JoB+w==",
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+      "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
       "dev": true,
-      "bin": {
-        "nanoid": "bin/nanoid.cjs"
-      },
-      "engines": {
-        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
-      }
+      "license": "MIT"
     },
     "node_modules/natural-compare": {
       "version": "1.4.0",
@@ -2594,6 +2607,7 @@
       "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.0.3.tgz",
       "integrity": "sha512-L/4pUDMxcNa8R/EthV08Zt42WBO4h1rarVtK0K+QJG0X187OLo7l699jWw0GKuwzkPQ//jMFA/8Xm6Fh3J/DAg==",
       "dev": true,
+      "peer": true,
       "bin": {
         "prettier": "bin/prettier.cjs"
       },
@@ -2650,6 +2664,7 @@
       "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
       "integrity": "sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "safe-buffer": "^5.1.0"
       }
@@ -2906,7 +2921,8 @@
           "type": "consulting",
           "url": "https://feross.org/support"
         }
-      ]
+      ],
+      "license": "MIT"
     },
     "node_modules/safe-regex-test": {
       "version": "1.0.0",
@@ -2932,10 +2948,11 @@
       }
     },
     "node_modules/serialize-javascript": {
-      "version": "6.0.0",
-      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-6.0.0.tgz",
-      "integrity": "sha512-Qr3TosvguFt8ePWqsvRfrKyQXIiW+nGbYpy8XK24NQHE83caxWt+mIymTT19DGFbNWNLfEwsrkSmN64lVWB9ag==",
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-6.0.2.tgz",
+      "integrity": "sha512-Saa1xPByTTq2gdeFZYLLo+RFE35NHZkAbqZeWNd3BpzppeVisAqpDjcp8dyf6uIvEqJRd46jemmyA4iFIeVk8g==",
       "dev": true,
+      "license": "BSD-3-Clause",
       "dependencies": {
         "randombytes": "^2.1.0"
       }
@@ -3177,6 +3194,7 @@
       "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
       "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "is-number": "^7.0.0"
       },
@@ -3375,10 +3393,11 @@
       }
     },
     "node_modules/workerpool": {
-      "version": "6.2.1",
-      "resolved": "https://registry.npmjs.org/workerpool/-/workerpool-6.2.1.tgz",
-      "integrity": "sha512-ILEIE97kDZvF9Wb9f6h5aXK4swSlKGUcOEGiIYb2OOu/IrDU9iwj0fD//SsA6E5ibwJxpEvhullJY4Sl4GcpAw==",
-      "dev": true
+      "version": "6.5.1",
+      "resolved": "https://registry.npmjs.org/workerpool/-/workerpool-6.5.1.tgz",
+      "integrity": "sha512-Fs4dNYcsdpYSAfVxhnl1L5zTksjvOJxtC5hzMNl+1t9B8hTJTdKDyZ5ju7ztgPy+ft9tBFXoOlDNiOT9WUXZlA==",
+      "dev": true,
+      "license": "Apache-2.0"
     },
     "node_modules/wrap-ansi": {
       "version": "7.0.0",
@@ -3431,10 +3450,11 @@
       }
     },
     "node_modules/yargs-parser": {
-      "version": "20.2.4",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.4.tgz",
-      "integrity": "sha512-WOkpgNhPTlE73h4VFAFsOnomJVaovO8VqLDzy5saChRBFQFBoMYirowyW+Q9HB4HFF4Z7VZTiG3iSzJJA29yRA==",
+      "version": "20.2.9",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.9.tgz",
+      "integrity": "sha512-y11nGElTIV+CT3Zv9t7VKl+Q3hTQoT9a1Qzezhhl6Rp21gJ/IVTW7Z3y9EWXhuUBC2Shnf+DX0antecpAwSP8w==",
       "dev": true,
+      "license": "ISC",
       "engines": {
         "node": ">=10"
       }
diff --git a/src/conditions-n-loops-tasks.js b/src/conditions-n-loops-tasks.js
index ab990a117..f3a5ca34a 100644
--- a/src/conditions-n-loops-tasks.js
+++ b/src/conditions-n-loops-tasks.js
@@ -21,8 +21,8 @@
  *  0  => true
  *  -5 => false
  */
-function isPositive(/* number */) {
-  throw new Error('Not implemented');
+function isPositive(number) {
+  return number >= 0;
 }
 
 /**
@@ -38,8 +38,10 @@ function isPositive(/* number */) {
  *  -5, 0, 5      => 5
  *  -0.1, 0, 0.2  => 0.2
  */
-function getMaxNumber(/* a, b, c */) {
-  throw new Error('Not implemented');
+function getMaxNumber(a, b, c) {
+  if (a > b && a > c) return a;
+  if (b > a && b > c) return b;
+  return c;
 }
 
 /**
@@ -60,8 +62,12 @@ function getMaxNumber(/* a, b, c */) {
  * {x: 1, y: 1}, {x: 2, y: 8} => false
  * {x: 1, y: 1}, {x: 2, y: 8} => false
  */
-function canQueenCaptureKing(/* queen, king */) {
-  throw new Error('Not implemented');
+function canQueenCaptureKing(queen, king) {
+  return (
+    queen.x === king.x ||
+    queen.y === king.y ||
+    Math.abs(queen.x - king.x) === Math.abs(queen.y - king.y)
+  );
 }
 
 /**
@@ -82,8 +88,21 @@ function canQueenCaptureKing(/* queen, king */) {
  *  2, 2, 5   => false
  *  3, 0, 3   => false
  */
-function isIsoscelesTriangle(/* a, b, c */) {
-  throw new Error('Not implemented');
+function isIsoscelesTriangle(a, b, c) {
+  let bool = false;
+  if (a === 0 || b === 0 || c === 0) {
+    return bool;
+  }
+  if (a === b) {
+    bool = a + b > c;
+  }
+  if (a === c) {
+    bool = a + c > b;
+  }
+  if (b === c) {
+    bool = b + c > a;
+  }
+  return bool;
 }
 
 /**
@@ -172,8 +191,17 @@ function getIndexOf(/* str, letter */) {
  *  12345, 0    => false
  *  12345, 6    => false
  */
-function isContainNumber(/* num, digit */) {
-  throw new Error('Not implemented');
+function isContainNumber(num, digit) {
+  let number = Math.abs(num);
+  const digitter = Math.abs(digit);
+  while (number > 0) {
+    const firstDel = number % 10;
+    if (firstDel === digitter) {
+      return true;
+    }
+    number = Math.floor(number / 10);
+  }
+  return false;
 }
 
 /**