Crucible Year Peter Yuill
Archive · full record

T_235

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

Recorded

Date
2026.04.18, day 111
Size
97 × 180 cm
Paper
S10, Red Star Mo She Imitation Antique Chu bark, Exhibition Edition
Inks
MB4, MB5, MB6
Phase
P2 The Switch
Shown on the site
yes (V23 rating of 5.0 or higher)
Early storage triage
PT: probably trash (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
86%
Dark share
56%
Tonal steps
7
Flaws named by the reads
water stain 5, other 2, mud 5, tide line 4
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
9
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_235T_235, tone-stretchedT_235, classed by brightness
86%of the sheet carries ink
Black 56%Grey 36% SHARE OF THE INK, NOT OF THE SHEET
TONAL STEPS

7 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: 0.070 (under 0.045 reads as flat).

0.300.751234567 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

“A sweeping arc composition close to R2. The fluent top-left arc and top-right fan stroke are offset by a bulky, flat, discoloured central black mass. Passes are legible at the edges and fused in the centre, and the sheet is crowded.”

Form · BUILT

Top-left arc and top-right fan stroke have travel and taper; the central-bottom black mass is a bulky fill with no stroke shape, and it has a hard vertical edge.

WEAKEST Central black mass, a bulky undefined blob

STRONGEST Top-left dry-brush arc sweeping into a tapered point

Tonal depth · MODELLED

Seven tonal steps; the right-side greys and the top-right fan show banding and grain. The bottom-centre black is uniform and cloudy inside. Modulation 0.07 is moderate.

WEAKEST Bottom-centre black core, flat and dead

STRONGEST Right grey masses with stepped, grained density

Layering · LEGIBLE

Grey arcs and washes are legible under the black strokes at the right and top-left, but the central overlaps merge into dense black, so the order can't be read there.

WEAKEST Centre, where passes fuse into one dark

STRONGEST Translucent grey sweeps under black on the right

Composition · WORKING

A bowl-shaped arc gives a clear direction and the top paper is shaped, but 86% coverage and a heavy bottom-centre mass crowd the lower half.

WEAKEST Crowded heavy centre and lower band

STRONGEST Large circular sweep carrying the eye left to right

Material and surface · FLAWED

In the colour view, a brownish, cloudy tint and a hard vertical seam edge sit inside the principal central dark mass, visible at viewing distance. The splatter and drips elsewhere are controlled.

WEAKEST Brownish cloudy discolouration inside the central black

STRONGEST Dry-brush grain in the top-left arc

FLAWS

8 distinct places, 3 major.

Each read must name every flaw and where it is, in a ninth of the sheet. Here the reads named flaws in 8 distinct places, 16 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.

1 × WATER STAIN“Faint pale wash marks in the top-left paper”1 × WATER STAIN · MAJOR“cloudy pale wash patches above the central da…”1 × WATER STAIN“mottled grey wash in the upper right behind t…”1 × TIDE LINE“pale wash edges along the outer left arc”2 × WATER STAIN, MUD · MAJOR“brownish cloudy tint inside central dark mass”3 × TIDE LINE, WATER STAIN“soft wash edges in the grey area at the right”1 × TIDE LINE“faint wash edges in the grey at the lower left”6 × OTHER, MUD · MAJOR“hard vertical edge cutting the black mass at …”WATER STAINTIDE LINEMUDOTHERMAJOR
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 1 principal ink mass traced (cyan), 8 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 16 edge segments, 31% crisp, 44% soft or bloomed, 25% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4H5H6H7H8
RULE 1Two tonal steps or fewer

Tonal depth held at rung 1.

7 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)