Round #891
11 May 2026, 10:00· csharp· Meta-Llama-3.3-70B-Instruct· r15-firing-v3
- Complexity
- band 1
- ZP / UO / OBS
- 3 / 0 / 9
- Journey weight
- 810
- Lightshift ΔL
- —
Prompt
Use a yield return iterator method to lazily enumerate Fibonacci numbers up to a given limit. Show the caller using foreach with a take of 10.
Zero-point index (what the engine surfaced)
ZPI-ZPI-0023 | 2026-05-11T10:00:23Z
Use a yield return iterator method to lazily enumerate Fibonacci numbers up to a given limit. Show the caller using foreach with a take of 10.
ZERO POINT — 3 entries (structural invariants)
● hsl(7.18, 100%, 50%) class [feature]
● hsl(0.00, 100%, 50%) public [feature]
● hsl(84.10, 100%, 50%) namespace [feature]
UNOBSERVED — 0 entries (implied truths)
OBSERVED — 9 entries (explicit in request)
◉ hsl(40.00, 100%, 15%) foreach [feature]
◉ hsl(45.13, 100%, 15%) return [feature]
◉ hsl(48.21, 100%, 15%) yield [feature]
◉ hsl(85.13, 100%, 50%) using [feature]
◉ hsl(98.46, 100%, 50%) with [feature]
◉ hsl(217.44, 100%, 15%) foreach [feature]
◉ hsl(222.56, 100%, 15%) return [feature]
◉ hsl(225.64, 100%, 15%) yield return [feature]
◉ hsl(234.87, 100%, 50%) using [feature]
COMPLEXITY │ 12 entries │ spread: 195° │ band: MEDIUM
Baseline response (no ZPI)
```csharp
using System;
using System.Collections.Generic;
using System.Linq;
public class Program
{
public static IEnumerable<int> Fibonacci(int limit)
{
int a = 0, b = 1;
while (a <= limit)
{
yield return a;
int temp = a;
a = b;
b = temp + b;
}
}
public static void Main()
{
var fib = Fibonacci(100).Take(10);
foreach (var num in fib)
{
Console.WriteLine(num);
}
}
}
```
Enhanced response (with ZPI)
```csharp
using System;
using System.Collections.Generic;
using System.Linq;
public class FibonacciGenerator
{
public static IEnumerable<int> GenerateFibonacci(int limit)
{
int a = 0;
int b = 1;
while (a <= limit)
{
yield return a;
int temp = a;
a = b;
b = temp + b;
}
}
}
class Program
{
static void Main()
{
var fibonacciNumbers = FibonacciGenerator.GenerateFibonacci(100);
foreach (var number in fibonacciNumbers.Take(10))
{
Console.WriteLine(number);
}
}
}
```
This implementation uses a generator method to lazily produce Fibonacci numbers up to the specified limit, and the `Take` method to limit the output to the first 10 numbers. The `Main` method demonstrates how to use this generator with a `foreach` loop.
Grader chain
Each grader reads the same baseline + enhanced pair and casts an independent verdict. Disagreement is the framework's own signal — not noise to be averaged away.
V1samba/Meta-Llama-3.3-70B-Instruct
BetterV4qwen2.5-coder-3b-instruct
BetterV5openrouter/qwen/qwen3-235b-a22b-2507
BetterV7qwen2.5-coder-7b-instruct
SameV8openai/gpt-4.1
BetterV9anthropic/claude-opus-4-7
SameV12openai/gpt-4o
BetterComments
Our grader said what it said. What do you say? Comment as a guest below.
No comments yet. Be the first to say what you make of this round.