Crucible Year Peter Yuill
Archive · full record

T_212

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

Recorded

Date
2026.04.12, day 105
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
5
Form
2
Tonal depth
2
Layering
2
Composition
2
Material and surface
1
Ink cover
81%
Dark share
40%
Tonal steps
5
Flaws named by the reads
ring 6, tide line 3, bloom 2, 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
7
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_212T_212, tone-stretchedT_212, classed by brightness
81%of the sheet carries ink
Black 40%Grey 47%Light 13% 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: 0.052 (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

“An energetic double vortex close to R2. The left spiral is fluent, while the right mass is heavy and crowded. Drop rings and blooms in the pale left disc mark the surface. Tone and layering are ordinary.”

Form · BUILT

The left circular sweep has fluent, curved stroke walls. The right dark mass is heavy, with ragged lobes, and the bridging neck is clumsy.

WEAKEST right mass: bulky, slab-like dark block, top right

STRONGEST left spiral arcs following the brush's sweep

Tonal depth · MODELLED

Modulation is 0.052, just above flat. The right mass shows grain and banding. The left crescent darks are mostly uniform. Five tonal steps.

WEAKEST dark crescent at the lower left is fairly flat inside

STRONGEST right mass: grainy, banded interior greys

Layering · LEGIBLE

Pale grey circular washes sit under the black arcs and stay readable at the left. On the right, later dark passes largely cover the earlier greys.

WEAKEST grey passes under the right mass are partly smothered

STRONGEST pale grey disc showing through the left spiral

Composition · WORKING

Two linked vortices make a figure-eight flow, with paper shaped at the top centre and lower centre. Coverage of 0.81 crowds the sheet, and the right block is dense.

WEAKEST right mass is heavy and crowds the right edge

STRONGEST linked double vortex moving the eye from left to right

Material and surface · FLAWED

The left disc interior has many circular drop rings and milky blotches beside the dark arcs. There is a pale cloudy wash edge at the lower centre. Visible in the colour view.

WEAKEST drop rings and blooms inside the pale left disc

STRONGEST dry-brush grain in the right mass

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, 16 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 × BLOOM“cloudy blotches at the top left of the spiral”4 × WATER STAIN, RING“blotched pale drops in grey wash at top centre”5 × RING · MAJOR“drop rings in the pale grey interior of the l…”4 × BLOOM, TIDE LINE, WATER STAIN, MUD“pale cloudy patch below central bridge”2 × TIDE LINE“pale wash edge below the bridge, lower centre”WATER STAINBLOOMRINGTIDE LINEMUDMAJOR
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 1 principal ink mass traced (cyan), 4 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 18 edge segments, 39% crisp, 33% soft or bloomed, 28% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4
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.

5 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)