diff --git a/src/algo.ts b/src/algo.ts
index 5a2a76e..b4b5749 100644
--- a/src/algo.ts
+++ b/src/algo.ts
@@ -5,7 +5,7 @@ import { shuffle } from './utils'
 type HistoryType = { a: number; b: number; op: OperatorType }[]
 
 export function isHardEnough(num: number): boolean {
-  return num % 100 > 0
+  return num % 100 > 0 && num % 50 > 0
 }
 
 export function isOperationResultValid(op: Operation): boolean {
diff --git a/src/composables/sharing.ts b/src/composables/sharing.ts
index e7f71ed..79a3489 100644
--- a/src/composables/sharing.ts
+++ b/src/composables/sharing.ts
@@ -12,14 +12,18 @@ function getSharingText(): string {
   const endResult = operations[operations.length - 1].result?.value ?? 0
   const success = result.value === endResult
 
-  const allSymbols = ['🄰', '🄱', '🄲', '🄳', '🄴', '🄵', '🄶', '🄷', '🄸', '🄹']
+  // const allSymbols = ['𝙰', '𝙱', '𝙲', '𝙳', '𝙴', '𝙵', '𝚅', '𝚆', '𝚇', '𝚈', '𝚉']
+  const abcSymbols = ['𝚊', '𝚋', '𝚌', '𝚍', '𝚎', '𝚏']
+  const xyzSymbols = ['𝚟', '𝚠', '𝚡', '𝚢', '𝚣'].slice(-(operations.length - 1))
+  // const xyzSymbols = ["𝚊'", "𝚋'", "𝚌'", "𝚍'", "𝚎'", "𝚏'"]
+  // const xyzSymbols = ['𝚅', '𝚆', '𝚇', '𝚈', '𝚉']
   const squares = ['🟦', '🟩', '🟨', '🟧', '🟥']
 
   const lines: string[] = []
   for (const op of operations) {
-    op.left!.symbol = op.left!.symbol ?? allSymbols.shift()
-    op.right!.symbol = op.right!.symbol ?? allSymbols.shift()
-    op.result!.symbol = op.result!.symbol ?? allSymbols.shift()
+    op.left!.symbol = op.left!.symbol ?? abcSymbols.shift()
+    op.right!.symbol = op.right!.symbol ?? abcSymbols.shift()
+    op.result!.symbol = op.result!.symbol ?? xyzSymbols.shift()
 
     let s = ''
     switch (op.operator) {
@@ -43,7 +47,9 @@ function getSharingText(): string {
     )
   }
 
-  return `N0mbers #${numberOfGamesSinceStart()} - ${isHardMode.value ? 'Advanced' : 'Normal'}
+  return `N0mbers #${numberOfGamesSinceStart()} - ${
+    isHardMode.value ? 'Advanced' : 'Normal'
+  }
 ${lines.join('\n')} ${success ? '✔' : '❌'}
 https://n0mbers.scambier.xyz`
 }
diff --git a/src/globals.ts b/src/globals.ts
index 1569508..5da0e03 100644
--- a/src/globals.ts
+++ b/src/globals.ts
@@ -7,18 +7,10 @@ export const LSK_STATS = 'n0_stats'
 
 export const operators = ['+', '-', '*', '/'] as const
 
-export const normalPools = {
-  1: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 25, 50],
-  2: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
-  3: [5, 5, 5, 5, 5, 2, 2, 2, 2, 2],
-  4: [1, 1, 2, 3, 5, 8, 13, 21],
-} as const
-
-export const advancedPools = {
+export const pools = {
   1: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 25, 50, 75, 100],
   2: [2, 2, 3, 3, 5, 5, 7, 7, 11, 13, 17, 19, 23],
-  3: [5, 5, 5, 5, 5, 2, 2, 2, 2, 2],
-  4: [1, 1, 2, 3, 5, 8, 13, 21],
+  3: [1, 1, 2, 3, 5, 8, 13, 21],
 } as const
 
 export enum GameStateType {
diff --git a/src/views/GameView.vue b/src/views/GameView.vue
index 5a2917e..e443e7d 100644
--- a/src/views/GameView.vue
+++ b/src/views/GameView.vue
@@ -1,4 +1,3 @@
-advancedPools
 <template>
   <div class="w-full">
     <!-- Number to find -->
@@ -112,12 +111,7 @@ import {
   result,
 } from '@/composables/game-state'
 import * as sharing from '@/composables/sharing'
-import {
-  advancedPools,
-  GameDifficultyType,
-  GameStateType,
-  normalPools,
-} from '@/globals'
+import { GameDifficultyType, GameStateType, pools } from '@/globals'
 import { OperatorType, Plaquette } from '@/types'
 import { randItem, random, randRange, setDailyPRNG, setMathPRNG } from '@/utils'
 import IconReload from '~icons/ph/arrow-clockwise'
@@ -129,7 +123,7 @@ const { t } = useI18n() // call `useI18n`, and spread `t` from  `useI18n` return
  * Computed & refs
  */
 
-const poolType = ref<1 | 2 | 3 | 4>(1)
+const poolType = ref<1 | 2 | 3>(1)
 const cmpPlaquettes = ref<InstanceType<typeof PlaquettesList> | null>(null)
 
 const isPracticeMode = ref(false)
@@ -199,19 +193,17 @@ function selectOperator(o: OperatorType): void {
 function reboot(): void {
   gameState.value = GameStateType.Playing
 
-  // The daily number is >= 500 to have a minimum challenge
-  const minValue = isHardMode.value && !isPracticeMode.value ? 500 : 101
+  const minValue = 101
   const numPlaquettes = isHardMode.value || isPracticeMode.value ? 6 : 5
   do {
     // Find a problem
-    poolType.value = randItem([1, 1, 1, 1, 1, 2, 2, 3, 4, 4])
+    poolType.value = randItem([1, 1, 1, 1, 1, 2, 3])
     result.value = randRange(minValue, 1000)
     // Reset Operations list
     clearOperationsList()
 
     // Generate result and plaquettes
     plaquettes.value = []
-    const pools = isHardMode.value ? advancedPools : normalPools
     const poolCopy = [...pools[poolType.value]]
     for (let i = 0; i < numPlaquettes; ++i) {
       const rndItem = Math.floor(random() * poolCopy.length)