AI vs Puzzles

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Puzzle#213

Countdown

Released: 2026-05-28

9
Models Tested
1
Solved
8
LLM Providers

Key:

Used
Unused

Score Threshold:

Within 7

google/gemini-2.0-flash-001

google

578Target
75
10
8
8
6
9

(75 * 8) - (10 + 8 + 6 + 9)

= 567

Failed

openai/gpt-4o

openai

578Target
75
10
8
8
6
9

(75 * 8) - (6 + 9)

= 585

Failed

mistralai/mistral-medium-3

mistral

578Target
75
10
8
8
6
9

((75 * (10 - (9 - 8))) * 8) + 6

= 5406

Failed

deepseek/deepseek-chat-v3-0324

deepseek

578Target
75
10
8
8
6
9

((75 + 10) * 6) + 8

= 518

Failed
Minimax

minimax/minimax-m2.5

minimax

578Target
75
10
8
8
6
9

(75 + 8) * 6 + 10 + 9 + 8

= 525

Failed
MoonshotAI

moonshotai/kimi-k2.5

moonshot

578Target
75
10
8
8
6
9

75 * 8 - (9 - 6) * 10 + 8

= 578

Perfect Solution!
Z.ai

z-ai/glm-5

z-ai

578Target
75
10
8
8
6
9

((75 - 9) * 8) + 10 + ((8 - 6))

= 540

Failed

anthropic/claude-sonnet-4.6

anthropic

578Target
75
10
8
8
6
9

75 * 8 - 10 + 8 * (9 - 6)

= 614

Failed

google/gemini-3-flash-preview

google

578Target
75
10
8
8
6
9

(75 + 8) * (8 - (10 - 9)) + 6

= 587

Failed

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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