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Puzzle#171

Countdown

Released: 2026-04-16


11
Models Tested
5
Solved
9
LLM Providers

Key:

Used
Unused

Score Threshold:

Within 7

openai/gpt-4o

openai

499Target
100
25
75
50
5
4

((75 + 4) * 5) + 100 + 25

= 520

Failed

google/gemini-3-flash-preview

google

499Target
100
25
75
50
5
4

(5 * 100) - (75 / (50 + 25))

= 499

Perfect Solution!

deepseek/deepseek-chat-v3-0324

deepseek

499Target
100
25
75
50
5
4

((75 * (4 + 5)) - 50) + 100

= 725

Failed

Z.ai

z-ai/glm-5

z-ai

499Target
100
25
75
50
5
4

100 * 5 - (75 - 50) / 25

= 499

Perfect Solution!

MoonshotAI

moonshotai/kimi-k2.5

moonshot

499Target
100
25
75
50
5
4

100*5-(4-75/25)

= 499

Perfect Solution!

google/gemini-2.0-flash-001

google

499Target
100
25
75
50
5
4

(50 * 5) + 75 - 100 + 4

= 229

Failed

anthropic/claude-sonnet-4.6

anthropic

499Target
100
25
75
50
5
4

5 * 100 - 4 + 75 / 25

= 499

Perfect Solution!

x-ai/grok-3-mini-beta

x-ai

499Target
100
25
75
50
5
4

(100 * 5) - (50 / 25)

= 498

Close; 1 away

Minimax

minimax/minimax-m2.5

minimax

499Target
100
25
75
50
5
4

100 * 5 + 75 / 25 - 4

= 499

Perfect Solution!

mistralai/mistral-medium-3

mistral

499Target
100
25
75
50
5
4

((100 + 75) * 4) + (25 - (50 / 5))

= 715

Failed

anthropic/claude-3.7-sonnet

anthropic

499Target
100
25
75
50
5
4

(100 * 5) - (75 / 25) + 4

= 501

Close; 2 away

Methodology Note

Each model receives the same prompt with the numbers to use. Models are tasked with creating an expression using only arithmetic operations to reach the target number. Each number can only be used once and you do not have to use all the numbers. Their answers are evaluated without feedback or retries.

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