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Puzzle#123

Countdown

Released: 2026-02-27


11
Models Tested
4
Solved
9
LLM Providers

Key:

Used
Unused

Score Threshold:

Within 7

google/gemini-2.0-flash-001

google

879Target
100
3
2
9
5
10

((100 * 9) - 3) - (10 + 2 + 5)

= 880

Close; 1 away

mistralai/mistral-medium-3

mistral

879Target
100
3
2
9
5
10

((100 + 3) * (10 - (9 / (5 + 2))))

= 897

Failed

google/gemini-3-flash-preview

google

879Target
100
3
2
9
5
10

(100-3+10)*9-5+2

= 960

Failed

anthropic/claude-3.7-sonnet

anthropic

879Target
100
3
2
9
5
10

(100 - 10) * 9 + 5 + 2

= 817

Failed

Minimax

minimax/minimax-m2.5

minimax

879Target
100
3
2
9
5
10

((100 + 10) * 9) - (5 * 2) + 3

= 983

Failed

anthropic/claude-sonnet-4.6

anthropic

879Target
100
3
2
9
5
10

9 * 100 - 10 - 5 - 3 * 2

= 879

Perfect Solution!

deepseek/deepseek-chat-v3-0324

deepseek

879Target
100
3
2
9
5
10

((100 * 9) - (10 * 2)) + 5 + 3

= 888

Failed

x-ai/grok-3-mini-beta

x-ai

879Target
100
3
2
9
5
10

(100 - (2 * 5 + 3)) * 10 + 9

= 879

Perfect Solution!

MoonshotAI

moonshotai/kimi-k2.5

moonshot

879Target
100
3
2
9
5
10

100 * 9 - 3 * (10 - 5 + 2)

= 879

Perfect Solution!

openai/gpt-4o

openai

879Target
100
3
2
9
5
10

(100 * 9) - 3 + 2

= 899

Failed

Z.ai

z-ai/glm-5

z-ai

879Target
100
3
2
9
5
10

100 * 9 - (10 - 3) * (5 - 2)

= 879

Perfect Solution!

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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