Add range display to guessing game

Show the full range of numbers in the guessing game, and grey out invalid choices when the user is guessing.

src/components/GuessingGame.tsx

@@ -34,6 +34,7 @@ const GuessingGame: React.FC<GuessingGameProps> = ({ showSocialShare = true }) =
   const [userGuess, setUserGuess] = useState('');
   const [guesses, setGuesses] = useState<number[]>([]);
   const [feedback, setFeedback] = useState<string>('');
+  const [validNumbers, setValidNumbers] = useState<Set<number>>(new Set());
   
   // Computer asking mode
   const [possibleNumbers, setPossibleNumbers] = useState<number[]>([]);
@@ -116,6 +117,44 @@ const GuessingGame: React.FC<GuessingGameProps> = ({ showSocialShare = true }) =
     };
   }, [possibleNumbers]);
 
+  // Calculate valid numbers based on guesses and feedback
+  const updateValidNumbers = useCallback((guesses: number[], secretNumber: number | null) => {
+    if (guesses.length === 0 || !secretNumber) {
+      const allNumbers = new Set(Array.from({ length: maxRange }, (_, i) => i + 1));
+      setValidNumbers(allNumbers);
+      return;
+    }
+
+    const valid = new Set<number>();
+    for (let num = 1; num <= maxRange; num++) {
+      let isValid = true;
+      
+      for (const guess of guesses) {
+        if (guess === secretNumber) break; // Game would be over
+        
+        if (guess < secretNumber) {
+          // Guess was too low, so number must be higher than guess
+          if (num <= guess) {
+            isValid = false;
+            break;
+          }
+        } else {
+          // Guess was too high, so number must be lower than guess
+          if (num >= guess) {
+            isValid = false;
+            break;
+          }
+        }
+      }
+      
+      if (isValid) {
+        valid.add(num);
+      }
+    }
+    
+    setValidNumbers(valid);
+  }, [maxRange]);
+
   // Start new game
   const startGame = () => {
     if (gameMode === 'user-guesses') {
@@ -123,6 +162,8 @@ const GuessingGame: React.FC<GuessingGameProps> = ({ showSocialShare = true }) =
       setSecretNumber(secret);
       setGuesses([]);
       setFeedback('');
+      const allNumbers = new Set(Array.from({ length: maxRange }, (_, i) => i + 1));
+      setValidNumbers(allNumbers);
     } else {
       const numbers = Array.from({ length: maxRange }, (_, i) => i + 1);
       setPossibleNumbers(numbers);
@@ -160,9 +201,9 @@ const GuessingGame: React.FC<GuessingGameProps> = ({ showSocialShare = true }) =
     setCurrentQuestion(question);
   }, [computerStrategy, possibleNumbers, generateRandomQuestion, generateLinearQuestion, generateBinaryQuestion]);
 
-  // Handle user's guess
+  // Handle user's guess (both input and number click)
-  const handleGuess = () => {
+  const handleGuess = (guessValue?: number) => {
-    const guess = parseInt(userGuess);
+    const guess = guessValue || parseInt(userGuess);
     if (isNaN(guess) || guess < 1 || guess > maxRange) {
       setFeedback('Please enter a valid number within the range.');
       return;
@@ -174,10 +215,14 @@ const GuessingGame: React.FC<GuessingGameProps> = ({ showSocialShare = true }) =
     if (guess === secretNumber) {
       setGameState('won');
       setFeedback(`Congratulations! You found the number in ${newGuesses.length} guesses!`);
-    } else if (guess < secretNumber!) {
-      setFeedback('Too low! Try a higher number.');
     } else {
-      setFeedback('Too high! Try a lower number.');
+      if (guess < secretNumber!) {
+        setFeedback('Too low! Try a higher number.');
+      } else {
+        setFeedback('Too high! Try a lower number.');
+      }
+      // Update valid numbers based on new feedback
+      updateValidNumbers(newGuesses, secretNumber);
     }
     
     setUserGuess('');
@@ -388,17 +433,46 @@ const GuessingGame: React.FC<GuessingGameProps> = ({ showSocialShare = true }) =
                 )}
               </div>
 
+              {/* Number Grid Display */}
+              <div className="space-y-4">
+                <h4 className="font-semibold text-center">Click a number or type your guess:</h4>
+                <div className="grid grid-cols-8 sm:grid-cols-10 md:grid-cols-12 lg:grid-cols-16 gap-1 max-h-64 overflow-y-auto p-2 border rounded-lg">
+                  {Array.from({ length: maxRange }, (_, i) => i + 1).map(num => {
+                    const isValid = validNumbers.has(num);
+                    const isGuessed = guesses.includes(num);
+                    
+                    return (
+                      <Button
+                        key={num}
+                        size="sm"
+                        variant={isGuessed ? "default" : isValid ? "outline" : "ghost"}
+                        className={`
+                          h-8 p-1 text-xs
+                          ${!isValid && !isGuessed ? 'opacity-30 cursor-not-allowed text-muted-foreground' : ''}
+                          ${isGuessed ? 'bg-accent text-accent-foreground' : ''}
+                          ${isValid && !isGuessed ? 'hover:bg-accent/10' : ''}
+                        `}
+                        onClick={() => isValid && !isGuessed && handleGuess(num)}
+                        disabled={!isValid || isGuessed}
+                      >
+                        {num}
+                      </Button>
+                    );
+                  })}
+                </div>
+              </div>
+
               <div className="flex gap-2">
                 <Input
                   type="number"
-                  placeholder="Enter your guess"
+                  placeholder="Or type your guess"
                   value={userGuess}
                   onChange={(e) => setUserGuess(e.target.value)}
                   onKeyDown={(e) => e.key === 'Enter' && handleGuess()}
                   min={1}
                   max={maxRange}
                 />
-                <Button onClick={handleGuess} disabled={!userGuess}>
+                <Button onClick={() => handleGuess()} disabled={!userGuess}>
                   Guess
                 </Button>
               </div>