TIS-100 Bench: Out-Of-Range Digit Viewer A

SPEC28320828 Hard Arithmetic construction Community tournament puzzle · TIS-100 Bench report →

Output the thousands digit of a power. The intermediate number can exceed the machine's numeric range, so direct evaluation is problematic.

In TIS-100 Bench, 16 LLMs each had one attempt at this TIS-100 puzzle, with 45 minutes to find a working program and keep improving it, without seeing the community leaderboard. 2 of 16 models solved it. No model found a new Pareto-frontier point beyond the community leaderboard.

2 / 16models solved it
42,133best LLM cycles (41,397 community)
0new frontier points

Records

ScoreCommunity bestBest LLMModel
Cycles41,39742,133Opus 5.5 · +2%
Nodes49GPT-6 Astra · +125%
Instructions47110Opus 5.5 · +134%

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

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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
01Opus 5.5Yes42,1339110—
02GPT-6 AstraYes49,8769116—
03DeepSeek V4.1 FlashNo————
04Fable 5.1No————
05GLM-5.3No————
06GPT-6.1 SolNo————
07Gemini 3.8 FlashNo————
08Gemini 4 ArgonNo————
09Grok 4.7No————
10Haiku 5.5No————
11Kimi K3.1 ProNo————
12MiMo-V2.6-ProNo————
13Muse Spark 1.3No————
14Muse Wonder 1.0No————
15Sonnet 5.5No————
16GPT-6 LunaNo————

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.

Opus 5.5 Fewest cyclesFewest nodes

42,133 cycles · 9 nodes · 112 instructionsSPEC28320828.42133-9-112.txt on GitHub

Opus 5.5 program running on SPEC28320828 in TIS-100
Node 0
MOV 6, DOWN
MOV UP, RIGHT
MOV RIGHT, ACC
SAV
MOV RIGHT, ACC
L: SWP
MOV ACC, DOWN
SWP
SUB 1
JGZ L
Node 1
MOV LEFT, RIGHT
MOV UP, RIGHT
MOV RIGHT, ACC
MOV ACC, LEFT
SAV
MOV RIGHT, ACC
MOV ACC, LEFT
L: SWP
MOV ACC, DOWN
SWP
SUB 1
JGZ L
MOV 6, DOWN
Node 2
JRO LEFT
NOP
ADD 1
ADD 8
SUB 7
ADD 8
ADD 1
MOV ACC, RIGHT
MOV LEFT, RIGHT
MOV ACC, LEFT
MOV RIGHT, LEFT
MOV 0, ACC
Node 3
TOP: MOV LEFT, ACC
SUB 9
JNZ P
MOV LEFT, ACC
SUB 3
R: SUB 4
JGZ R
ADD 7
MOV ACC, LEFT
JMP TOP
P: MOV LEFT, LEFT
Node 4
TOP: MOV DOWN, ACC
JRO UP
ADD ACC
ADD DOWN
ADD ACC
MOV ACC, DOWN
JMP TOP
MOV DOWN, NIL
SUB 999
JMP E
ADD ACC
ADD ACC
ADD DOWN
E: MOV ACC, DOWN
Node 5
TOP: MOV DOWN, ACC
JRO UP
ADD ACC
ADD DOWN
ADD ACC
MOV ACC, DOWN
JMP TOP
MOV DOWN, NIL
SUB 999
JMP E
ADD ACC
ADD ACC
ADD DOWN
E: MOV ACC, DOWN
Node 6
S: MOV ACC, UP
MOV ACC, UP
MOV UP, ACC
JLZ R
SUB 99
JMP T
R: MOV 1, ACC
JMP S
C: MOV -1, RIGHT
SUB 100
T: JGZ C
MOV 5, RIGHT
ADD 99
Node 7
S: MOV ACC, UP
MOV ACC, UP
MOV UP, ACC
JLZ O
I: ADD 1
J: JRO LEFT
O: MOV ACC, RIGHT
MOV RIGHT, DOWN
MOV 0, ACC
JMP S
M: SUB 100
JGZ M
ADD 99
Node 8
MOV LEFT, ACC
ADD 989
L: JLZ D
SWP
ADD 1
SWP
SUB 10
JMP L
D: SWP
MOV ACC, LEFT
MOV 0, ACC
SAV

Opus 5.5 Fewest instructions

43,784 cycles · 9 nodes · 110 instructionsSPEC28320828.43784-9-110.txt on GitHub

Opus 5.5 program running on SPEC28320828 in TIS-100
Node 0
MOV 5, DOWN
MOV UP, RIGHT
MOV RIGHT, ACC
SAV
MOV RIGHT, ACC
L: SWP
MOV ACC, DOWN
SWP
SUB 1
JGZ L
Node 1
MOV LEFT, RIGHT
MOV UP, RIGHT
MOV RIGHT, ACC
MOV ACC, LEFT
SAV
MOV RIGHT, ACC
MOV ACC, LEFT
L: SWP
MOV ACC, DOWN
SWP
SUB 1
JGZ L
MOV 5, DOWN
Node 2
JRO LEFT
NOP
ADD 1
ADD 7
SUB 6
ADD 7
ADD 1
MOV ACC, RIGHT
MOV LEFT, RIGHT
MOV ACC, LEFT
MOV RIGHT, LEFT
MOV 0, ACC
Node 3
TOP: MOV LEFT, ACC
SUB 8
JNZ P
MOV LEFT, ACC
SUB 3
R: SUB 4
JGZ R
ADD 7
MOV ACC, LEFT
JMP TOP
P: MOV LEFT, LEFT
Node 4
MOV DOWN, ACC
JRO UP
ADD ACC
ADD DOWN
ADD ACC
JMP E
MOV DOWN, NIL
SUB 999
JMP E
ADD ACC
ADD ACC
ADD DOWN
E: MOV ACC, DOWN
Node 5
MOV DOWN, ACC
JRO UP
ADD ACC
ADD DOWN
ADD ACC
JMP E
MOV DOWN, NIL
SUB 999
JMP E
ADD ACC
ADD ACC
ADD DOWN
E: MOV ACC, DOWN
Node 6
S: MOV ACC, UP
MOV ACC, UP
MOV UP, ACC
JLZ R
SUB 99
JMP T
R: MOV 1, ACC
JMP S
C: MOV -1, RIGHT
SUB 100
T: JGZ C
ADD 99
MOV 5, RIGHT
Node 7
S: MOV ACC, UP
MOV ACC, UP
MOV UP, ACC
JLZ O
I: ADD 1
J: JRO LEFT
O: MOV ACC, RIGHT
MOV RIGHT, DOWN
MOV 0, ACC
JMP S
M: SUB 100
JGZ M
ADD 99
Node 8
MOV LEFT, ACC
ADD 989
L: JLZ D
SWP
ADD 1
SWP
SUB 10
JMP L
D: SWP
MOV ACC, LEFT
MOV 0, ACC
SAV