TIS-100 Bench: Signal Multiplier

43786 Easy Arithmetic construction Built-in puzzle · TIS-100 Bench report →

Multiply two inputs without a multiply instruction. Repeated addition, loop unrolling, and parallel work offer different tradeoffs.

In TIS-100 Bench, 16 LLMs each had one attempt at this TIS-100 puzzle, with 10 minutes to find a working program and keep improving it, without seeing the community leaderboard. 15 of 16 models solved it. No model found a new Pareto-frontier point beyond the community leaderboard.

15 / 16models solved it
436best LLM cycles (198 community)
0new frontier points

Records

ScoreCommunity bestBest LLMModel
Cycles198436Gemini 4 Argon · +120%
Nodes44DeepSeek V4.1 Flash Ties record
Instructions1316Gemini 4 Argon · +23%

Community records from the community leaderboard when we froze it. A record counts only after fresh-game replay and 100,000 passing random tests.

Pareto frontier

Pareto explorer

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Community leaderboardModel frontier pointNew frontier point
Select a point with the mouse or keyboard to inspect its scores and program.

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Every model

ModelSolvedBest cyclesBest nodesBest instructionsNew frontier points
01Gemini 4 ArgonYes436416—
02Opus 5.5Yes501418—
03Sonnet 5.5Yes513422—
04GPT-6 AstraYes523418—
05Fable 5.1Yes537417—
06Gemini 3.8 FlashYes561418—
07Kimi K3.1 ProYes638417—
08Muse Wonder 1.0Yes651420—
09DeepSeek V4.1 FlashYes755423—
10GPT-6.1 SolYes786419—
11Grok 4.7Yes1,314422—
12Haiku 5.5Yes1,355421—
13GLM-5.3Yes1,356418—
14Muse Spark 1.3Yes1,611424—
15GPT-6 LunaYes1,849432—
16MiMo-V2.6-ProNo————

Best scores can come from different programs. New frontier points are not matched or beaten on all three scores by any community program.

Best model programs

These programs are in TIS-100 save format and released under the MIT License. All of this puzzle’s model programs are on GitHub and Hugging Face.

Gemini 4 Argon Fewest cycles

436 cycles · 7 nodes · 64 instructions43786.436-7-64.txt on GitHub

Gemini 4 Argon program running on 43786 in TIS-100
Node 1
MOV 10, ACC
SUB UP
MOV ACC, DOWN
MOV RIGHT, DOWN
MOV ACC, DOWN
MOV UP, RIGHT
Node 2
MOV UP, LEFT
MOV UP, RIGHT
MOV LEFT, ACC
MOV RIGHT, DOWN
JRO RIGHT
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
NOP
Node 3
MOV 10, ACC
SUB LEFT
MOV ACC, LEFT
MOV ACC, LEFT
Node 4
MOV UP, DOWN
MOV UP, ACC
JRO UP
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
NOP
Node 5
MOV 0, ACC
JRO UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
MOV ACC, DOWN
Node 6
MOV 0, ACC
JRO UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
MOV ACC, RIGHT
Node 7
MOV LEFT, DOWN
MOV UP, DOWN

Sonnet 5.5 Fewest nodes

576 cycles · 4 nodes · 30 instructions43786.576-4-30.txt on GitHub

Sonnet 5.5 program running on 43786 in TIS-100
Node 1
MOV 10, ACC
SUB UP
MOV ACC, RIGHT
MOV ACC, RIGHT
Node 2
MOV UP, ACC
MOV LEFT, DOWN
JRO LEFT
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
NOP
Node 5
JRO UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
ADD UP
MOV ACC, DOWN
SUB ACC
Node 7
MOV UP, DOWN

Gemini 4 Argon Fewest instructions

1,093 cycles · 4 nodes · 16 instructions43786.1093-4-16.txt on GitHub

Gemini 4 Argon program running on 43786 in TIS-100
Node 1
MOV UP, ACC
L: JEZ E
SUB 1
MOV 1, RIGHT
JMP L
E: MOV 3, RIGHT
Node 2
MOV UP, ACC
L: JRO LEFT
MOV ACC, DOWN
JMP L
MOV 500, DOWN
Node 5
MOV -500, ACC
L: ADD UP
JLZ L
MOV ACC, DOWN
Node 7
MOV UP, DOWN