Crucible Year Peter Yuill
Archive · full record

T_271

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

Recorded

Date
2026.04.26, day 119
Size
97 × 180 cm
Paper
S4, Tanxi half-raw, 6-foot
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
83%
Dark share
48%
Tonal steps
4
Flaws named by the reads
other 10, water stain 5, bloom 1, 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
5
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_271T_271, tone-stretchedT_271, classed by brightness
83%of the sheet carries ink
Black 48%Grey 38%Light 15% 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: 0.051 (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 surface1FLAWED2SOUND2SOUND2SOUND2SOUND1.8

READ 1, IN ITS OWN WORDS

“Two bold curved bands set up a circular movement over grey washes; forms coherent but blunt-ended, modest interior modelling, and visible creasing plus cloudy washes mar the surface. An ordinary sheet near R2.”

Form · BUILT

Two large curved bands hold their walls and follow an arc; ends are squared and slab-like, with bulk especially in the left band's cut-off end.

WEAKEST Blunt squared ends of left upper band

STRONGEST Right curved band following brush arc

Tonal depth · MODELLED

Tone-stretched view shows brush streaks and banding inside right band; left band shows a soft band but is largely even. Modulation 0.051 just above flat.

WEAKEST Left band interior fairly even mid-dark

STRONGEST Right band with streaked dry-brush grain

Layering · LEGIBLE

Grey washes and a pale arc sit under the two dark bands; overlaps readable at band edges, about two to three passes.

WEAKEST Lower-centre grey wash cloudy beneath right band

STRONGEST Translucent grey arcs under dark bands

Composition · WORKING

Opposed curved bands set up a circular diagonal movement with shaped white centre; right edge spatter and lower-left drips feel busy and scattered.

WEAKEST Crowded spatter field at right edge

STRONGEST Two opposed arcs implying a circle

Material and surface · FLAWED

Crease and crack lines visible in colour view across both dark bands; cloudy blotchy grey wash and water spots at lower centre and upper right.

WEAKEST Crackle creases through right dark band

STRONGEST Dry-brush streaks within right band

FLAWS

7 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 7 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.

2 × OTHER“cracks in left dark band”2 × WATER STAIN, BLOOM“pale spotted washes upper right”3 × OTHER“crack lines in left dark band”3 × OTHER, WATER STAIN, RING · MAJOR“crease/crack lines through right dark band”2 × WATER STAIN“cloudy blotchy pale wash with spots, lower le…”1 × WATER STAIN“cloudy blotchy grey wash below left band”4 × OTHER“paper creases and cracks inside right dark ba…”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), 8 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 17 edge segments, 47% crisp, 29% soft or bloomed, 24% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4H5H6H7H8
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.

1 major flaw: applied
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)