Crucible Year Peter Yuill
Archive · full record

T_259

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
Form
2
Tonal depth
2
Layering
2
Composition
2
Material and surface
1
Ink cover
75%
Dark share
38%
Tonal steps
5
Flaws named by the reads
bloom 4, ring 7, water stain 6, other 3
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
3
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_259T_259, tone-stretchedT_259, classed by brightness
75%of the sheet carries ink
Black 38%Grey 51%Light 11% 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: 0.058 (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, 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

“Gestural bowl composition close to R2: a good grey arc and a shaped white centre, but the right black mass is bulky and flat, and ringed drop blooms mark the central grey arc.”

Form · BUILT

Grey bowl arc follows the brush's travel; left dark sweep holds. Right black mass is slab-like with blobby finger lobes at its lower left.

WEAKEST Bulky right dark mass with blunt, lobed lower edge

STRONGEST Sweeping grey arc with dry-brush striations, lower centre

Tonal depth · MODELLED

Five tonal steps; modulation 0.058. Left mass and grey arc show banding and grain, but the right black core reads as uniform surface.

WEAKEST Core of right black mass flat inside

STRONGEST Left dark sweep with banded, stepped greys

Layering · LEGIBLE

Pale ring wash, grey arc and black passes can be read where they overlap at left; at right the black mostly covers the earlier grey.

WEAKEST Right mass where black covers the grey beneath

STRONGEST Pale arc under grey sweep under left dark

Composition · WORKING

The bowl-shaped arc frames the open upper centre and carries the eye from left to right; the right cluster is dense and sits heavily.

WEAKEST Crowded, heavy right side

STRONGEST Shaped white bowl of empty paper, top centre

Material and surface · FLAWED

Circular pale drop blooms with rings sit in the central grey arc and at bottom left, visible in colour; a feathered cloudy wash edges the right mass.

WEAKEST Pale ringed drop blooms in the grey arc

STRONGEST Dry-brush grain in the grey arc strokes

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, 20 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.

5 × WATER STAIN, OTHER“isolated grey drop spot in upper paper”6 × BLOOM, RING, OTHER · MAJOR“ringed pale drop spots inside grey arc”3 × WATER STAIN, BLOOM · MAJOR“cloudy feathered pale wash left of right dark…”5 × RING, OTHER“cluster of drop rings near bottom-left edge”1 × WATER STAIN“cloudy grey wash across the bottom centre”WATER STAINBLOOMRINGOTHERMAJOR
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 2 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 17 edge segments, 47% crisp, 41% soft or bloomed, 12% 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 1.0
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)