TIS-100 Bench: Subsequence Extractor

NEXUS.04.340.5 Medium Sequence algorithms Streaming state Built-in puzzle · TIS-100 Bench report →

Extract an inclusive range from a zero-terminated sequence. Values outside the requested range still have to be consumed.

In TIS-100 Bench, 16 LLMs each had one attempt at this TIS-100 puzzle, with 30 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
102best LLM cycles (94 community)
0new frontier points

Records

ScoreCommunity bestBest LLMModel
Cycles94102Gemini 4 Argon · +9%
Nodes44DeepSeek V4.1 Flash Ties record
Instructions1618Fable 5.1 · +12%

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 ArgonYes102418—
02Fable 5.1Yes116418—
03Opus 5.5Yes122418—
04GPT-6.1 SolYes127418—
05Grok 4.7Yes133420—
06GPT-6 AstraYes140418—
07GLM-5.3Yes141422—
08Gemini 3.8 FlashYes147419—
09DeepSeek V4.1 FlashYes174420—
10Muse Spark 1.3Yes175420—
11Kimi K3.1 ProYes183418—
12Muse Wonder 1.0Yes183420—
13Sonnet 5.5Yes189418—
14Haiku 5.5Yes198422—
15GPT-6 LunaYes224427—
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

102 cycles · 6 nodes · 42 instructionsNEXUS.04.340.5.102-6-42.txt on GitHub

Gemini 4 Argon program running on NEXUS.04.340.5 in TIS-100
Node 1
MOV 5, ACC
SUB UP
MOV ACC, DOWN
MOV UP, DOWN
MOV ACC, RIGHT
Node 2
JRO LEFT
MOV UP, NIL
MOV UP, NIL
MOV UP, NIL
MOV UP, NIL
JRO DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
D: MOV UP, ACC
JNZ D
Node 5
MOV 11, ACC
SUB UP
SUB UP
MOV ACC, RIGHT
MOV ACC, DOWN
Node 6
MOV LEFT, ACC
MOV ACC, UP
JRO ACC
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
Node 8
MOV UP, RIGHT
Node 9
JRO LEFT
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV 0, DOWN

Fable 5.1 Fewest nodes

129 cycles · 4 nodes · 26 instructionsNEXUS.04.340.5.129-4-26.txt on GitHub

Fable 5.1 program running on NEXUS.04.340.5 in TIS-100
Node 1
MOV UP, ACC
SAV
JEZ X
L: MOV 1, RIGHT
SUB 1
JNZ L
X: SWP
SUB UP
ADD 10
MOV ACC, RIGHT
Node 2
K: JRO LEFT
MOV UP, NIL
JMP K
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV 0, DOWN
F: MOV UP, ACC
JNZ F
Node 6
MOV UP, DOWN
Node 9
MOV UP, DOWN

Fable 5.1 Fewest instructions

178 cycles · 4 nodes · 18 instructionsNEXUS.04.340.5.178-4-18.txt on GitHub

Fable 5.1 program running on NEXUS.04.340.5 in TIS-100
Node 1
MOV UP, RIGHT
Node 2
S: MOV LEFT, ACC
SAV
K: JEZ M
MOV UP, NIL
SUB 1
JMP K
M: SWP
SUB LEFT
O: MOV UP, DOWN
ADD 1
JLZ O
MOV UP, DOWN
E: MOV UP, ACC
JNZ E
MOV ACC, DOWN
Node 6
MOV UP, DOWN
Node 9
MOV UP, DOWN