Crucible Year Peter Yuill
Archive · full record

T_225

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

Recorded

Date
2026.04.15, day 108
Size
97 × 180 cm
Paper
S11, Red Star Mo She Special Effect Xieyi, 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
5.2
Form
2
Tonal depth
2
Layering
2
Composition
2
Material and surface
1.25
Ink cover
83%
Dark share
26%
Tonal steps
5
Flaws named by the reads
water stain 3, bloom 4, tide line 1, mud 1, other 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
6
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 4 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_225T_225, tone-stretchedT_225, classed by brightness
83%of the sheet carries ink
Black 26%Grey 58%Light 16% 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: 0.055 (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 4MEAN
Form2BUILT2BUILT2BUILT2BUILT2.0
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2.0
Composition2WORKING2WORKING2WORKING2WORKING2.0
Material and surface1FLAWED1FLAWED2SOUND1FLAWED1.3

READ 1, IN ITS OWN WORDS

“An energetic sheet of spatter and sweeps, close to R2. It has a working arc and legible greys, but the bottom-left is cloudy and crowded, and there are wash accidents next to the principal masses.”

Form · BUILT

The central dark arc and the right-hand fan of dry-brush strokes are coherent and follow the brush. The bottom-left dark area is diffuse and the top-left bar is stiff.

WEAKEST Diffuse grey cloud bottom-left lacks a clear wall

STRONGEST Central dark arc stroke rising to the right

Tonal depth · MODELLED

There are five tonal steps and the dark-interior modulation is 0.055. The central arc shows grain and banding. The right dark blot and the top-left bar are fairly flat inside.

WEAKEST Dark blot at right centre is flat inside

STRONGEST Right fan of grey streaks with stepped density

Layering · LEGIBLE

Pale grey washes, mid-grey sweeps and dark strokes with spatter stay mostly legible. In the bottom-left the passes blur together into a cloudy mass.

WEAKEST Bottom-left overlaps get cloudy and harder to read

STRONGEST Pale grey arcs under the dark central stroke

Composition · WORKING

A sweep carries the eye from lower left to upper right, and the paper at the top centre is shaped. Ink covers 83% of the sheet, which is busy, and the bottom-left is crowded with spatter.

WEAKEST Crowded, busy bottom-left quadrant

STRONGEST Sweeping arc from lower left up to the right

Material and surface · FLAWED

There is a milky, cloudy wash with blotchy texture across the left-centre greys and a soft grey bloom at the bottom-left. Pale tide-edged patches sit beside the right blot.

WEAKEST Cloudy grey wash patch at left centre

STRONGEST Dry-brush streaks in the right fan

FLAWS

5 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 5 distinct places, 11 mentions in all across 4 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, MUD“cloudy pale grey wash with mottled texture, l…”2 × OTHER“crease lines visible in central grey plane”4 × BLOOM · MAJOR“diffuse soft grey cloud in bottom-left dark m…”1 × WATER STAIN“Pale cloudy wash with soft edge below right b…”1 × TIDE LINE“pale grey patch edges below and right of the …”WATER STAINBLOOMTIDE LINEMUDOTHERMAJOR
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 3 principal ink masses traced (cyan), 8 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 20 edge segments, 60% crisp, 25% soft or bloomed, 15% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4H5H6H7H8
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.

2 major flaws: applied
RULE 3Any quality below 0.5

The rating cannot exceed 4.

lowest 1.3
RULE 4At least two valid reads

A read that breaks the reply format is discarded.

4 of 5 valid
THE ARITHMETIC

V23 rating 5.2.

Engine v23.8, 4 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 RUNG1.85(2.0 + 2.0 + 2.0 + 2.0 + 1.3) ÷ 5
→
RAW4.701 + 2 × 1.85
→
RATING5.25 + 2.086 × (4.70 − 4.60)