GROUND-WP-0004: reopen GR-E01 -- the void ruling rests on a bad premise

GROUND-WP-0002 T03 voided gr-e01-threshold-unreachable-2p as a stand-in
artifact, on the basis that Problems.csv makes 12 points available. The
12 is wrong and clay-borg supplied it: twelve points exist in the FILE,
but GR-S01 deals 2/3/4 of the five Problems, so 4/6/9 are ever in play.
clay-borg asserted the 12 in its CB-WP-0021 declaration and corrected
itself one commit later, by which time the ruling had been made.

The gap survives the authoritative dataset and is now confirmed at the
table: the maintainer could not win any 3-player game on 2026-08-03.
Three independent forms of evidence -- play, the engine's own constants,
and both datasets agreeing -- plus a named reproduction.

T06 has been removed from GROUND-WP-0002, which is finished; a new task
does not belong in a closed workplan and the hub correctly refused to
register it there.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
tegwick 2026-08-03 23:52:12 +02:00
parent 1ef0550cc4
commit 982c004daf
3 changed files with 102 additions and 54 deletions

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@ -19,6 +19,7 @@
| task | GROUND-WP-0002-T03 | done | — | workplans/GROUND-WP-0002-rulings-clay-borg-is-blocked-on.md |
| task | GROUND-WP-0002-T04 | done | — | workplans/GROUND-WP-0002-rulings-clay-borg-is-blocked-on.md |
| task | GROUND-WP-0002-T05 | done | — | workplans/GROUND-WP-0002-rulings-clay-borg-is-blocked-on.md |
| task | GROUND-WP-0002-T06 | todo | — | workplans/GROUND-WP-0002-rulings-clay-borg-is-blocked-on.md |
| task | GROUND-WP-0003-T01 | todo | — | workplans/GROUND-WP-0003-playtest-semi-and-coalitions.md |
| task | GROUND-WP-0003-T02 | todo | — | workplans/GROUND-WP-0003-playtest-semi-and-coalitions.md |
| task | GROUND-WP-0003-T03 | todo | — | workplans/GROUND-WP-0003-playtest-semi-and-coalitions.md |

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@ -229,60 +229,6 @@ T01 may dissolve it.
| `gr-e02-shared-ground` | **Confirm** — encode `Modes.csv` MODE_COOP as printed |
| `gr-e04-coalitions` | **Confirm** — encode `Modes.csv` MODE_COALITION as printed |
## Task: GR-E01 vs GR-S01 — the group cannot win below 5 seats
```task
id: GROUND-WP-0002-T06
status: todo
priority: high
```
**This is the sharpest finding the engine has produced, it is confirmed by
play, and it has a reproduction.**
The maintainer played several 3-player games on 2026-08-03 and could not
win any of them. The engine says why, computed from its own constants:
| seats | Problems dealt (GR-S01) | maximum achievable | GR-E01 threshold | |
|---:|---:|---:|---:|---|
| 2 | 2 | 3 | 5 | **unreachable** |
| 3 | 3 | 6 | 7 | **unreachable** |
| 4 | 3 | 6 | 7 | **unreachable** |
| 5 | 4 | 10 | 9 | reachable |
| 6 | 4 | 10 | 9 | reachable |
**Claim every Problem in play, concede nothing, play perfectly — and at 2,
3 and 4 seats the group still loses.** In SHARED GROUND (GR-E02), where
the group total *is* the outcome, those games cannot be won.
**It is not a dataset problem.** The stand-in the engine used gives
3 / 6 / 10; this repository's `Problems.csv` gives 4 / 6 / 9. Both fall
short of the same 5 / 7 / 9. No edition data reconciles them.
**Reproduction:** `games/ground/src/lib.rs`
`gd0001_group_success_is_unreachable_below_five_seats`, run with
`cargo test -p games-ground --all-features gd0001 -- --nocapture`. It
reads `problem_priorities` (GR-S01) and `threshold` (GR-E01) out of the
engine, so it cannot drift from the rules it is testing.
### The ruling needed
Two numbers disagree and **only one of them can be right**:
- **GR-S01's deal** — 2 / 3 / 4 Problems by player count, from a scenario
of five. Should more of the five be in play at low seat counts?
- **GR-E01's thresholds** — 5 / 7 / 9. Were these set for a game that
deals more Problems than GR-S01 deals?
A third possibility worth ruling out explicitly: **the thresholds may be
intended to be unreachable at low seat counts**, with SHARED GROUND being
a 56 player mode and the smaller counts played in another mode. If so,
say it, because nothing currently does and the engine will keep offering
a game that cannot be won.
**Until this is ruled the engine cannot claim a working scoring mode**, and
`gr-e01-threshold-unreachable-2p` stays as a failing-in-fact record.
## Task: GR-E03 and GR-E04 have never been played to the end
```task

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@ -0,0 +1,101 @@
---
id: GROUND-WP-0004
type: workplan
title: "Reopen GR-E01: the void ruling rests on a premise clay-borg has corrected"
domain: consumer
repo: ground-game
status: ready
owner: bernd
topic_slug: whynot
created: "2026-08-03"
updated: "2026-08-03"
origin: correction
origin_ref: GROUND-WP-0002
---
# The GR-E01 ruling was made on a false premise, and clay-borg supplied it
GROUND-WP-0002 T03 ruled `gr-e01-threshold-unreachable-2p`:
> **Void / overturn as a rules gap** — stand-in artifact. With
> authoritative `Problems.csv` (**12 pts available**) the printed
> thresholds (2p→5, 34p→7, 56p→9) stand.
**The 12 is wrong, and clay-borg is where it came from.** Twelve points
exist *in the file*; **GR-S01 deals 2 / 3 / 4 of the five Problems**, so
the points ever in play are 4 / 6 / 9. clay-borg asserted the 12 in its
CB-WP-0021 declaration, corrected itself one commit later after actually
running the arithmetic, and by then the ruling had been made.
**The gap is not a stand-in artifact. It survives the authoritative
dataset**, and it has now been confirmed at the table.
## The evidence, in three independent forms
**1. Play.** The maintainer played several 3-player games on 2026-08-03
and could not win any of them.
**2. The engine's own constants.**
| seats | dealt (GR-S01) | max achievable | GR-E01 threshold | |
|---:|---:|---:|---:|---|
| 2 | 2 | 3 | 5 | **unreachable** |
| 3 | 3 | 6 | 7 | **unreachable** |
| 4 | 3 | 6 | 7 | **unreachable** |
| 5 | 4 | 10 | 9 | reachable |
| 6 | 4 | 10 | 9 | reachable |
Claim every Problem in play, concede nothing, play perfectly — at 2, 3 and
4 seats the group still loses. In SHARED GROUND, where the group total
*is* the outcome, those games cannot be won.
**3. Both datasets agree.** The stand-in gives 3 / 6 / 10; `Problems.csv`
gives 4 / 6 / 9. Both fall short of 5 / 7 / 9. **No edition data
reconciles them**, which is the part the void ruling turned on.
**Reproduction:** `gd0001_group_success_is_unreachable_below_five_seats`
in clay-borg —
`cargo test -p games-ground --all-features gd0001 -- --nocapture`. It
reads `problem_priorities` and `threshold` out of the engine, so it cannot
drift from the rules it tests.
## Task: rule again, on the corrected numbers
```task
id: GROUND-WP-0004-T01
status: todo
priority: high
```
Two numbers disagree and only one can be right:
- **GR-S01's deal** — 2 / 3 / 4 of five Problems. Should more be in play
at low seat counts?
- **GR-E01's thresholds** — 5 / 7 / 9. Were they set for a deal larger
than GR-S01 makes?
A third possibility to rule out **explicitly**, because nothing currently
does: the thresholds may be *intended* to be unreachable at low seat
counts, with SHARED GROUND being a 56 player mode. If that is the
design, say so — the engine will otherwise keep offering a game that
cannot be won, and a player will keep concluding they played badly.
`gr-e01-threshold-unreachable-2p` stays as a failing-in-fact record until
this is answered. It is **not** retired on the previous ruling.
## Task: how a clay-borg premise reached a ruling unchecked
```task
id: GROUND-WP-0004-T02
status: todo
priority: medium
```
Worth one paragraph, not a project: the ruling was sound reasoning on a
supplied number, and the number was wrong. The engine now attaches a
**runnable reproduction** to findings of this kind (clay-borg CB-WP-0022),
so a future ruling can be checked against an artifact rather than a
sentence.
State whether that is sufficient from this side, or whether rulings should
cite the reproduction they relied on.