Crucible Year Peter Yuill
Archive · full record

T_304

The work as shown. Every value below comes from vae.db, the master database of the Crucible Year.

Recorded

Date
2026.05.14, day 137
Size
70 × 180 cm
Paper
S3, Tanxi Jing Pi, raw
Inks
MB4, MB5, MB6, MC
Phase
P2 The Switch
Shown on the site
yes (V23 rating of 5.0 or higher)
Early storage triage
SA: save, archive (Peter's early system, since retired)

Measured · V23 (v23.8)

V23 rating
5
Form
2
Tonal depth
2
Layering
2
Composition
2
Material and surface
1
Ink cover
80%
Dark share
41%
Tonal steps
4
Flaws named by the reads
water stain 4, bloom 7, other 7, ring 1
The V23 rating runs from 1 to 9, with 5 the middle of this body of work. It is the engine's reading, and the reference the archive is measured against.

Older engine

V7
3
From an earlier engine (V7). Its scale differs from V23's, so it is only ever compared with other readings by the same engine.

How the number was made

Read by the Visual Analysis Engine, version 23.8, on 2026.10.06: measured by code, then read 5 times by Claude Opus 5.5 against three reference paintings (R1 to R3), each read independent of the others. How the engine works.

WHAT THE CODE SEES

Three views of one sheet.

Left, the photograph. Centre, the tone stretch the model is shown beside it: the darkest 45% of tones spread over the whole range, so flat black, banding and stains show. Right, every pixel as the measuring code classes it: cyan black ink, deep teal translucent grey, stone the palest ink, near black bare paper.

T_304T_304, tone-stretchedT_304, classed by brightness
80%of the sheet carries ink
Black 41%Grey 52% SHARE OF THE INK, NOT OF THE SHEET
TONAL STEPS

4 families of tone.

Every inked pixel's brightness in 64 bins, smoothed; each circled peak holds at least 4% of the ink. Life inside the black: 0.052 (under 0.045 reads as flat).

0.300.751234 BLACK INK TRANSLUCENT GREYS PALEST INK, 0.88 LUMINANCE OF EVERY INKED PIXEL, 64 BINS. PAPER (ABOVE 0.88) IS LEFT OUT.
FIVE READS

Five reads, one answer.

Each quality placed on its ladder by each read, and the mean the engine keeps.

READ 1READ 2READ 3READ 4READ 5MEAN
Form2BUILT2BUILT2BUILT2BUILT2BUILT2.0
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2.0
Composition2WORKING2WORKING2WORKING2WORKING2WORKING2.0
Material and surface1FLAWED1FLAWED1FLAWED1FLAWED1FLAWED1.0

READ 1, IN ITS OWN WORDS

“Energetic paired arcs with pink underlayer and a strongly textured right dark mass, but the crowded centre and its cloudy, mottled grey wash weaken the material and tonal quality; an ordinary sheet near R2.”

Form · BUILT

Arcing strokes left and right follow brush travel with bristle-streaked edges; the large central grey mass is broad, soft-walled and somewhat formless at its upper edge.

WEAKEST Central grey mass bulky, outline dissolving at top

STRONGEST Left arc sweep ending in dark hooked foot

Tonal depth · MODELLED

Dark modulation 0.052 and four tonal steps; right mass shows veining and arcs, left arc has dry-brush grain, but central mass reads as one cloudy grey.

WEAKEST Central grey mass mottled but tonally cloudy

STRONGEST Right dark mass with reticulated white veining

Layering · LEGIBLE

Grey sweeps, pink colour band and later black strokes read as distinct passes; in the centre-right the grey and black passes merge somewhat and the order softens.

WEAKEST Centre overlaps where grey and black passes blur

STRONGEST Pink band under black arc, upper left

Composition · WORKING

Paired arcs give a clear left-to-right sweep; the white gap between them is shaped, but 80% coverage crowds the right half and the centre mass feels heavy.

WEAKEST Crowded centre-right; little shaped empty paper

STRONGEST Two arcs driving left-to-right rhythm

Material and surface · FLAWED

Dry-brush and reticulation used well at right, but the central mass is a cloudy mottled wash, with grey blot rings top left and stray drops on the mass.

WEAKEST Cloudy mottled wash inside central grey mass

STRONGEST Dry-brush grain on left arc foot

FLAWS

4 distinct places, 1 major.

Each read must name every flaw and where it is, in a ninth of the sheet. Here the reads named flaws in 4 distinct places, 19 mentions in all across 5 reads; the number in each ninth is how many times a flaw was named there. Reads agreeing on a place strengthen the evidence for one flaw; they do not multiply it. A major flaw holds Material and surface at rung 1.

7 × BLOOM, RING, WATER STAIN, OTHER“grey round blots near pink band, upper left”1 × OTHER“black drops at top of right dark mass”9 × WATER STAIN, OTHER, BLOOM · MAJOR“cloudy mottled interior of central grey mass”2 × OTHER“dark ink drops on central mass lower area”WATER STAINBLOOMRINGOTHERMAJOR
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 1 principal ink mass traced (cyan), 6 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 16 edge segments, 6% crisp, 69% soft or bloomed, 25% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4H5H6
RULE 1Two tonal steps or fewer

Tonal depth held at rung 1.

4 steps: not applied
RULE 2A major flaw

Material held at rung 1. Mild waves in the unmounted paper are never a flaw.

5 major flaws: applied
RULE 3Any quality below 0.5

The rating cannot exceed 4.

lowest 1.0
RULE 4At least two valid reads

A read that breaks the reply format is discarded.

5 of 5 valid
THE ARITHMETIC

V23 rating 5.0.

Engine v23.8, 5 reads. Fixed arithmetic, the same for every painting; the constants were set on 24 randomly chosen paintings so the median sheet scores 5. The scale is relative to this archive, not to painting in general, and a difference of less than half a point between two paintings is noise.

MEAN RUNG1.80(2.0 + 2.0 + 2.0 + 2.0 + 1.0) ÷ 5
→
RAW4.601 + 2 × 1.80
→
RATING5.05 + 2.086 × (4.60 − 4.60)