Crucible Year Peter Yuill
Archive · full record

T_288

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
5.2
Form
2
Tonal depth
1.2
Layering
2
Composition
2.2
Material and surface
1.8
Ink cover
77%
Dark share
59%
Tonal steps
3
Flaws named by the reads
other 7, water stain 3, bloom 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
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_288T_288, tone-stretchedT_288, classed by brightness
77%of the sheet carries ink
Black 59%Grey 29%Light 12% SHARE OF THE INK, NOT OF THE SHEET
TONAL STEPS

3 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: 0.038 (under 0.045 reads as flat).

0.300.75123 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 2 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 depth1THIN1THIN1THIN2MODELLED1THIN1.2
Layering2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2.0
Composition2WORKING2WORKING2WORKING3COMMANDING2WORKING2.2
Material and surface2SOUND1FLAWED2SOUND2SOUND2SOUND1.8

READ 1, IN ITS OWN WORDS

“An ensō-like pair of arcs with a strong central void, but the black masses are flat inside and the stroke ends are blunt. It is cleaner than R1 but lacks R3's layered tonal depth. Overall ordinary.”

Form · BUILT

Two large arc strokes have coherent curved walls and follow the brush's travel, but both end in squared, slab-like terminals; the drippy splashes at the lower left are bulky.

WEAKEST Blunt rectangular ends of both dark arcs

STRONGEST Left arc's sweep following the brush's curve

Tonal depth · THIN

Dark interior modulation 0.038 is flat. Both black arcs are nearly uniform inside, with faint streaks only. Tone steps between the grey outer passes and the black happen at the edges.

WEAKEST Interior of the right dark arc is flat

STRONGEST Grey outer bands of the left arc

Layering · LEGIBLE

There are three tonal steps: a pale grey sweep, a mid grey and a black arc. Overlaps are readable at the outer edges of both arcs, but the black mostly covers what lies beneath.

WEAKEST Black passes cover the earlier grey ones

STRONGEST Grey stepped bands at the top right outside the arc

Composition · WORKING

Two facing arcs shape a strong white circular void with a gap at the bottom centre. The arrangement is symmetrical and somewhat static; the lower corners are busy and heavy.

WEAKEST Lower corners crowded with drippy splashes

STRONGEST Central open circle framed by the two arcs

Material and surface · SOUND

The ink is controlled. Spatter drops in the central white look intentional. Small blots sit along the left edge. The tone-stretched view shows no tide lines inside the dark masses.

WEAKEST Stray drops and spatter scattered in the white void

STRONGEST Dry-brush feathered edges at the arcs' lower ends

FLAWS

5 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 5 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.

3 × OTHER“isolated drop at the top of the white void”5 × OTHER, WATER STAIN“scattered small blots along the left grey band”2 × BLOOM, WATER STAIN“cloudy mottling inside right dark arc”2 × BLOOM“blotchy dark lobes bottom-left corner”1 × OTHER“stray ink drops across central white paper”WATER STAINBLOOMOTHER
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 2 principal ink masses traced (cyan), 2 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 14 edge segments, 43% crisp, 43% soft or bloomed, 14% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2
RULE 1Two tonal steps or fewer

Tonal depth held at rung 1.

3 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 1.2
RULE 4At least two valid reads

A read that breaks the reply format is discarded.

5 of 5 valid
THE ARITHMETIC

V23 rating 5.2.

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 RUNG1.84(2.0 + 1.2 + 2.0 + 2.2 + 1.8) ÷ 5
→
RAW4.681 + 2 × 1.84
→
RATING5.25 + 2.086 × (4.68 − 4.60)