Crucible Year Peter Yuill
Archive · full record

T_256

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

Recorded

Date
2026.04.21, day 114
Size
70 × 180 cm
Paper
S3, Tanxi Jing Pi, raw
Inks
MB4, MB5, MB6
Phase
P2 The Switch
Shown on the site
yes (V23 rating of 5.0 or higher)
Early storage triage
SHP: save, has potential (Peter's early system, since retired)

Measured · V23 (v23.8)

V23 rating
5.2
Form
2
Tonal depth
2
Layering
2
Composition
2
Material and surface
1.2
Ink cover
75%
Dark share
49%
Tonal steps
5
Flaws named by the reads
bloom 9, other 6, water stain 2
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
4
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_256T_256, tone-stretchedT_256, classed by brightness
75%of the sheet carries ink
Black 49%Grey 39%Light 13% SHARE OF THE INK, NOT OF THE SHEET
TONAL STEPS

5 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: 0.048 (under 0.045 reads as flat).

0.300.7512345 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, agreeing on 4 of 5 qualities.

Each quality placed on its ladder by each read, and the mean the engine keeps. Where reads differ, they differ by one rung; close calls resolve down.

READ 1READ 2READ 3READ 4READ 5MEAN
Form2BUILT2BUILT2BUILT2BUILT2BUILT2.0
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2.0
Composition2WORKING2WORKING2WORKING2WORKING2WORKING2.0
Material and surface2SOUND1FLAWED1FLAWED1FLAWED1FLAWED1.2

READ 1, IN ITS OWN WORDS

“A gestural horizontal sheet: three black crescents over grey washes. The left and middle strokes are fluent, while the right mass is lumpy. Tone and layering are adequate, the composition is crowded in a band, and there is minor mottling. An ordinary sheet.”

Form · BUILT

Left crescent and rising stroke follow the brush's travel; middle stroke fluent. The right mass breaks into bulky lobes and drops at its base.

WEAKEST Right dark mass: lumpy lower end with blobby protrusions

STRONGEST Middle crescent stroke with dry-brush tail

Tonal depth · MODELLED

Bristle striations model the left and middle strokes; five tonal steps; grey washes behind. The right black mass is mostly flat. Modulation 0.048 is barely above flat.

WEAKEST Right dark mass interior largely flat black

STRONGEST Left crescent with striated bristle banding

Layering · LEGIBLE

Pale grey sweeps, a mid-grey cloud, then black strokes. The overlaps mostly read, but the central grey cloud blurs the sequence.

WEAKEST Central grey cloud wash fuses passes, order unclear

STRONGEST Black crescents laid over translucent grey washes

Composition · WORKING

Three crescents set up a left-to-right wave with a rising peak at the centre-left. The ink fills a dense horizontal band, and the empty top paper is barely shaped.

WEAKEST Top paper reads as leftover above a crowded band

STRONGEST Wave rhythm from left crescent to right rise

Material and surface · SOUND

Dry-brush is used well in the strokes. There is speckled mottling in the grey below the middle stroke and at the lower left, cloudy grey at the top centre, and stray drops at the bottom right.

WEAKEST Mottled spotty grey wash below middle stroke

STRONGEST Dry-brush streaking in middle and left strokes

FLAWS

5 distinct places, 2 major.

Each read must name every flaw and where it is, in a ninth of the sheet. Here the reads named flaws in 5 distinct places, 17 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.

3 × WATER STAIN, BLOOM · MAJOR“cloudy grey wash beside crescent, centre top”5 × BLOOM, OTHER“granular speckling in grey at lower left behi…”1 × BLOOM“cloudy mottled grey wash above middle stroke”5 × BLOOM, WATER STAIN · MAJOR“mottled spotting in grey wash below middle st…”3 × OTHER“stray ink drops near bottom right edge”WATER STAINBLOOMOTHERMAJOR
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 18 edge segments, 56% crisp, 44% soft or bloomed, 0% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4H5H6
RULE 1Two tonal steps or fewer

Tonal depth held at rung 1.

5 steps: not applied
RULE 2A major flaw

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

3 major flaws: applied
RULE 3Any quality below 0.5

The rating cannot exceed 4.

lowest 1.2
RULE 4At least two valid reads

A read that breaks the reply format is discarded.

5 of 5 valid
THE ARITHMETIC

V23 rating 5.2.

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 RUNG1.84(2.0 + 2.0 + 2.0 + 2.0 + 1.2) ÷ 5
→
RAW4.681 + 2 × 1.84
→
RATING5.25 + 2.086 × (4.68 − 4.60)