# C1197 — Test late-block recovery under shared century operations

## Question

Do the exact Reu recovery and shared source operations determine Peleg and Serug?

## Inputs

```json
{}
```

## Sources

```json
[
  "C1192",
  "C1162",
  "C1171"
]
```

## Opened utc

2026-09-28T05:24:57.404565+00:00

## Results

```json
{
  "late_block": {
    "path": "model/late_block_joint_rounding_recovery.json",
    "sha256": "7b23de1d3ad4c27eb643636c854a02745d7b03a84e9a3920e9f00a86d6309ed4",
    "bytes": 333
  },
  "remaining_common_choices": [
    28,
    29,
    30,
    31
  ]
}
```

## Finding

Reu is conditionally fixed at32, while Peleg and Serug can jointly take28,29,30 or31 in MT, with the century counterparts in SP/LXX. The shared row grammar narrows the block but does not generate the source30.

## Reassessment

Identify the exact missing kind of input rather than search for a new numerical target.

## Checks

```json
{
  "four_choices": true,
  "source30_present": true,
  "Reu32": true
}
```

## Closed utc

2026-09-28T05:24:57.405086+00:00

## Record provenance

Exact record hash: `0d7cab31277e244b1c444b5e3f2dcc96d551f69a500934b87bd6b43018e14cbe`

Source journal: `Research_Cycles/C1132_C1431_Recovered/journal.json`