Crucible Year Peter Yuill
Archive · full record

T_246

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
SA: save, archive (Peter's early system, since retired)

Measured · V23 (v23.8)

V23 rating
5.7
Form
2
Tonal depth
2
Layering
2
Composition
2
Material and surface
1.8
Ink cover
63%
Dark share
36%
Tonal steps
4
Flaws named by the reads
water stain 6, bloom 5
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.

Peter's own rating

Rating
5.5
Peter's rating is his own eye, not the engine's, and he never gives a 10.
“There is always something that can be done better.”
Peter Yuill · 2026.07.02

Older engine

V7
7
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_246T_246, tone-stretchedT_246, classed by brightness
63%of the sheet carries ink
Black 36%Grey 42%Light 22% 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: 0.050 (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, 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 surface2SOUND2SOUND1FLAWED2SOUND2SOUND1.8

READ 1, IN ITS OWN WORDS

“A gestural crescent sweep with dark masses at both ends, much like R2. The arc and the open paper above it work, the left mass is blobby and cloudy, and the sheet is ordinary throughout.”

Form · BUILT

The crescent sweep holds as a coherent, nameable form and follows the brush's travel. The lower-left dark mass is a soft, lobed blob with dissolving walls.

WEAKEST Bulky blobby dark mass at lower left

STRONGEST Right crescent horn sweeping up to top right

Tonal depth · MODELLED

Dark modulation of 0.050 is only just above flat. The right mass has stepped density and dry-brush streaks. The left dark mass is mostly a cloudy, even grey inside.

WEAKEST Cloudy, near-uniform interior of the left dark mass

STRONGEST Graded greys under the right crescent mass

Layering · LEGIBLE

A pale grey sweep, a mid-grey band and a dark top layer are all readable, especially along the crescent. At the left the passes run together.

WEAKEST Left mass, where the passes merge into a cloudy grey

STRONGEST Translucent grey sweep under the dark right mass

Composition · WORKING

The crescent carries the eye from left to right, and the empty paper in the upper centre is shaped by it. The lower centre is busy with scattered spatter and drops.

WEAKEST Crowded spatter across the bottom centre

STRONGEST Crescent arc framing the empty upper centre

Material and surface · SOUND

The ink is mostly controlled, with dry-brush and spatter used on purpose. There are faint pale water drops in the upper centre and a soft bloom edge at the lower left, all minor.

WEAKEST Bloomed, soft edges of the left dark mass

STRONGEST Dry-brush streaking at the right crescent end

FLAWS

4 distinct places, 0 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, 11 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.

4 × WATER STAIN“pale grey drops in open upper-centre paper”1 × BLOOM“cloudy spread edges of left lower dark mass”2 × WATER STAIN“pale grey drop marks in the upper-centre paper”4 × BLOOM“soft cloudy edge of the lower-left dark mass”WATER STAINBLOOM
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 2 principal ink masses traced (cyan), 9 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 17 edge segments, 41% crisp, 24% soft or bloomed, 35% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4H5H6H7H8H9
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.

none named
RULE 3Any quality below 0.5

The rating cannot exceed 4.

lowest 1.8
RULE 4At least two valid reads

A read that breaks the reply format is discarded.

5 of 5 valid
THE ARITHMETIC

V23 rating 5.7.

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 RUNG1.96(2.0 + 2.0 + 2.0 + 2.0 + 1.8) ÷ 5
→
RAW4.921 + 2 × 1.96
→
RATING5.75 + 2.086 × (4.92 − 4.60)