Crucible Year Peter Yuill
Archive · full record

T_240

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
SHP: save, has potential (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
89%
Dark share
41%
Tonal steps
4
Flaws named by the reads
bloom 2, ring 3, other 7, water stain 4, mud 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
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_240T_240, tone-stretchedT_240, classed by brightness
89%of the sheet carries ink
Black 41%Grey 45%Light 14% 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: 0.070 (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, 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 bold sweeping arc gives this sheet clear movement. The black end is blunt, the sheet is crowded, and the interior wash is cloudy, with ring and blot accidents near the arc. Overall it is ordinary, close to R2.”

Form · BUILT

The main arc follows the stroke's travel. Its darkest stretch on the right ends in a blunt rectangular block, and the lower-left tail is bulky.

WEAKEST Squared, slab-like blunt end of the black arc

STRONGEST Grey outer arc following the brush's sweep

Tonal depth · MODELLED

Dark modulation is 0.070 with 4 tonal steps. The upper arc shows bristle banding, but the black slab at centre-right reads mostly flat inside.

WEAKEST Densest black block near the arc's end

STRONGEST Banded grey arcs inside the lower curve

Layering · LEGIBLE

Grey washes sit under the black arc and spread across the right side. They stay readable at the overlaps, but there are only about two or three passes.

WEAKEST Black arc mostly covers the earlier grey passes

STRONGEST Pale grey strokes on the right behind the black edge

Composition · WORKING

One big arc gives clear movement from left to upper right. Ink coverage is 0.89, so little empty paper is left, and the inner field is muddled and crowded.

WEAKEST Crowded, murky centre inside the arc

STRONGEST The sweeping arc driving across the sheet

Material and surface · FLAWED

There is cloudy, blotchy grey inside the curve and bubbly rings along the left arc edge. Dark blots sit bottom left, and a paper crease crosses the top of the black.

WEAKEST Cloudy, mottled wash inside the arc

STRONGEST Dry-brush grain along the arc's upper edge

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.

1 × OTHER“paper crease or crack through the top of the …”5 × RING, BLOOM, WATER STAIN · MAJOR“bubbly ring marks along the left edge of the …”5 × BLOOM, WATER STAIN, MUD · MAJOR“cloudy mottled grey wash inside the arc”5 × OTHER“round black blots near the bottom-left edge”WHOLE SHEET · 1 × OTHERWATER STAINBLOOMRINGMUDOTHERMAJOR
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 15 edge segments, 60% crisp, 13% soft or bloomed, 27% 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.

4 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)