TIS-100 Bench: Stored Image Decoder

70601 Medium Image generation Sequence algorithms Built-in puzzle · TIS-100 Bench report →

Decode length–color pairs into an image, wrapping a run onto the next row when it crosses the image edge.

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
1,314best LLM cycles (1,178 community)
0new frontier points

Records

ScoreCommunity bestBest LLMModel
Cycles1,1781,314Gemini 4 Argon · +12%
Nodes44DeepSeek V4.1 Flash Ties record
Instructions1620GPT-6 Astra · +25%

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

Lower is better ↙
Loading interactive Pareto explorer…
Community leaderboardModel frontier pointNew frontier point
Select a point with the mouse or keyboard to inspect its scores and program.

Search over time

Loading puzzle trajectories…

Every model

ModelSolvedBest cyclesBest nodesBest instructionsNew frontier points
01Gemini 4 ArgonYes1,314420—
02GPT-6 AstraYes1,359420—
03GPT-6.1 SolYes1,393420—
04Fable 5.1Yes1,564421—
05Sonnet 5.5Yes1,576421—
06DeepSeek V4.1 FlashYes1,582421—
07Muse Wonder 1.0Yes1,585421—
08Opus 5.5Yes1,602421—
09Grok 4.7Yes1,644421—
10Gemini 3.8 FlashYes1,841421—
11Haiku 5.5Yes2,506421—
12Kimi K3.1 ProYes2,693420—
13GLM-5.3Yes3,465426—
14Muse Spark 1.3Yes3,737431—
15GPT-6 LunaYes5,551536—
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

1,314 cycles · 11 nodes · 51 instructions70601.1314-11-51.txt on GitHub

Gemini 4 Argon program running on 70601 in TIS-100
Node 0
MOV RIGHT, DOWN
Node 1
MOV UP, LEFT
MOV UP, DOWN
Node 2
MOV DOWN, RIGHT
Node 3
MOV LEFT, DOWN
Node 4
MOV 13, ACC
SUB UP
MOV 1, RIGHT
L: MOV ACC, RIGHT
ADD 13
JLZ L
Node 5
MOV ACC, RIGHT
MOV ACC, RIGHT
MOV ACC, RIGHT
MOV ACC, RIGHT
MOV ACC, RIGHT
MOV ACC, RIGHT
MOV ACC, RIGHT
MOV ACC, RIGHT
MOV ACC, RIGHT
MOV ACC, RIGHT
MOV ACC, RIGHT
MOV ACC, RIGHT
MOV ACC, RIGHT
JRO LEFT
MOV UP, ACC
Node 6
MOV LEFT, UP
Node 7
MOV UP, DOWN
Node 9
MOV -2, RIGHT
L: MOV 1, RIGHT
MOV ACC, RIGHT
ADD 1
MOV -11, RIGHT
MOV -8, RIGHT
JMP L
Node 10
MOV RIGHT, DOWN
MOV RIGHT, DOWN
MOV RIGHT, DOWN
MOV RIGHT, DOWN
MOV RIGHT, DOWN
MOV RIGHT, DOWN
MOV RIGHT, DOWN
MOV RIGHT, DOWN
MOV RIGHT, DOWN
MOV RIGHT, DOWN
MOV RIGHT, DOWN
JRO LEFT
MOV -1, DOWN
MOV 0, DOWN
MOV LEFT, DOWN
Node 11
MOV UP, LEFT

Gemini 4 Argon Fewest nodes

1,567 cycles · 4 nodes · 31 instructions70601.1567-4-31.txt on GitHub

Gemini 4 Argon program running on 70601 in TIS-100
Node 1
MOV 6, ACC
SUB UP
MOV 1, RIGHT
MOV UP, RIGHT
L: MOV ACC, RIGHT
ADD 6
JLZ L
Node 2
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
MOV ACC, DOWN
JRO LEFT
MOV LEFT, ACC
Node 6
MOV UP, DOWN
Node 10
L: MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
MOV UP, DOWN
SUB 1
JGZ L
MOV -1, DOWN
SWP
MOV 0, DOWN
MOV ACC, DOWN
ADD 1
SWP
MOV 5, ACC

GPT-6.1 Sol Fewest instructions

2,346 cycles · 5 nodes · 20 instructions70601.2346-5-20.txt on GitHub

GPT-6.1 Sol program running on 70601 in TIS-100
Node 1
MOV UP ACC
MOV UP DOWN
L: MOV -1 DOWN
SUB 1
JGZ L
MOV -999 DOWN
Node 5
MOV UP ACC
JMP C
MOV ACC RIGHT
C: JRO UP
Node 6
MOV LEFT DOWN
Node 9
MOV ACC RIGHT
ADD 1
Node 10
MOV 0 DOWN
MOV LEFT DOWN
MOV 30 ACC
L: MOV UP DOWN
SUB 1
JNZ L
MOV -1 DOWN