Crucible Year Peter Yuill
Archive · full record

T_280

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

Recorded

Date
2026.05.07, day 130
Size
97 × 180 cm
Paper
S12, Red Star Mo She Special Effect Xieyi, half-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
6.2
Form
2
Tonal depth
2
Layering
2
Composition
2.4
Material and surface
2
Ink cover
86%
Dark share
63%
Tonal steps
5
Flaws named by the reads
water stain 10, bloom 1, overwork 1, other 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
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 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_280T_280, tone-stretchedT_280, classed by brightness
86%of the sheet carries ink
Black 63%Grey 28%Light 9% 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: 0.064 (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
Composition3COMMANDING2WORKING2WORKING2WORKING3COMMANDING2.4
Material and surface2SOUND2SOUND2SOUND2SOUND2SOUND2.0

READ 1, IN ITS OWN WORDS

“A strong bowl composition of two sweeping arcs with good dry-brush on the left. The heavy central wedge and the flat right black hold the sheet near average. There are minor droplet spots in the grey washes.”

Form · BUILT

Both arcs follow the brush's travel, left arc especially, but the central lower wedge and right dark mass are slab-like and stiff where they meet.

WEAKEST Bulky dark wedge at bottom centre, blunt joins

STRONGEST Left sweeping arc with dry-brush striations following stroke

Tonal depth · MODELLED

Left arc shows arcs and stepped greys; modulation 0.064 confirms life, but right lower black mass and central wedge read largely flat inside.

WEAKEST Right dark mass interior near-uniform black

STRONGEST Left arc banded greys with striated grain

Layering · LEGIBLE

Translucent grey passes sit under black arcs, readable at edges and upper right; in the centre-bottom the later black largely covers earlier passes.

WEAKEST Centre where passes crowd into dense black

STRONGEST Grey under-washes beneath left and right arcs

Composition · COMMANDING

Two arcs form one great bowl carrying the eye across; the empty upper paper is shaped and active. Bottom centre is crowded with splatter and wedges.

WEAKEST Busy, congested bottom centre junction

STRONGEST Bowl-shaped sweep framing shaped empty top centre

Material and surface · SOUND

Ink controlled with good dry-brush; scattered pale/dark droplet spots in upper right grey arc and lower left wash, small and not disrupting principal blacks.

WEAKEST Pale droplet spots in upper right arc

STRONGEST Dry-brush striations in left arc

FLAWS

3 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 3 distinct places, 13 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.

5 × WATER STAIN“droplet spots inside grey wash of upper right…”5 × WATER STAIN“speckled droplet marks in lower left grey wash”3 × BLOOM, OVERWORK, OTHER“pale patches near bottom of central wedge”WATER STAINBLOOMOVERWORKOTHER
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 3 principal ink masses traced (cyan), 6 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 20 edge segments, 50% crisp, 25% soft or bloomed, 25% 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.

none named
RULE 3Any quality below 0.5

The rating cannot exceed 4.

lowest 2.0
RULE 4At least two valid reads

A read that breaks the reply format is discarded.

5 of 5 valid
THE ARITHMETIC

V23 rating 6.2.

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 RUNG2.08(2.0 + 2.0 + 2.0 + 2.4 + 2.0) ÷ 5
→
RAW5.161 + 2 × 2.08
→
RATING6.25 + 2.086 × (5.16 − 4.60)