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Puzzle#149

Countdown

Released: 2026-03-25


11
Models Tested
3
Solved
9
LLM Providers

Key:

Used
Unused

Score Threshold:

Within 7

anthropic/claude-3.7-sonnet

anthropic

409Target
50
3
3
6
1
6

(50 + 6) * (3 * 3 - 1)

= 448

Failed

mistralai/mistral-medium-3

mistral

409Target
50
3
3
6
1
6

((50 + 3) * (6 + 1)) * 6

= 2226

Failed

google/gemini-2.0-flash-001

google

409Target
50
3
3
6
1
6

(3 * (50 + (6 * 6))) - 1

= 257

Failed

deepseek/deepseek-chat-v3-0324

deepseek

409Target
50
3
3
6
1
6

((50 * (6 + 3)) - 6) - 1

= 443

Failed

openai/gpt-4o

openai

409Target
50
3
3
6
1
6

(50 * 6) + ((6 / 3) * 3) + 1

= 307

Failed

MoonshotAI

moonshotai/kimi-k2.5

moonshot

409Target
50
3
3
6
1
6

50 * (6 + 3 - 1) + 6 + 3

= 409

Perfect Solution!

x-ai/grok-3-mini-beta

x-ai

409Target
50
3
3
6
1
6

50 * ((6 + 3) - 1) + (6 + 3)

= 409

Perfect Solution!

Minimax

minimax/minimax-m2.5

minimax

409Target
50
3
3
6
1
6

50*6+6*3+3+1

= 322

Failed

Z.ai

z-ai/glm-5

z-ai

409Target
50
3
3
6
1
6

50 * (6 + 3 - 1) + 6 + 3

= 409

Perfect Solution!

anthropic/claude-sonnet-4.6

anthropic

409Target
50
3
3
6
1
6

50 * (6 + 3) - 6 * (3 - 1)

= 438

Failed

google/gemini-3-flash-preview

google

409Target
50
3
3
6
1
6

((50 + 6 + 1) * 6) + (3 * 3)

= 351

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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