Crucible Year Peter Yuill
Concentric grey and black arc bands sweep around a white opening at bottom centre, with a separate black and grey sector at lower left. T_335, tone-stretched: what the model was shownT_335: every pixel as the measuring code classes it
97 × 180 cm · the whole sheet, uncropped

T_335

The engine's reading

A great wheel of ink bands turning around a white opening at the bottom edge, its black arc sweeping right and a broken sector holding the left.

Record
Date
2026.06.03
Dimensions
97 × 180 cm
Paper
Red Star Mo She Special Effect Xieyi Edition, half-raw (June 2025 batch)
Ink
Yi De Ge Refined Ink Juice, Boku-Undo Genso, Yi De Ge Yun Tou Yan
Enquire about T_335Availability, price or a studio visit. Peter replies himself; asking commits you to nothing.

The white at the bottom is the way out, and I know that stairwell. Spiral, concrete, the kind they poured into car parks when the city still believed in cars. Stand on the lowest landing and look up and every floor is a ring: grey, greyer, then the black one where the bulbs died and stayed dead. The creases are the cracks in the render. I climbed it before dawn to reach the roof, counting landings by smell: rain, diesel, a cigarette, rain again. The door at the top was always chained, and the chain was always long enough. Up there the whole city turned slowly around the hole I had climbed out of, lit and enormous, holding still for once.

NeonWho Neon is
Detail at full resolution, cut by code where the brushwork is finest · select to enlarge
The engine's reading

The reading

Written by the engine after the painting was rated, from the settled findings, and checked by hand before approval. It explains the numbers; it may not change them.

Structure
concentric arc bands around a white core; a separate sector at lower left
Movement
rotation from lower left, over the top, down to lower right; nothing opposes
Coverage
ink on about four fifths of the paper
Tone
seven tonal steps, weighted to the middle greys
Layering
pale, mid grey and black passes; readable across upper right and left sector
Edges
crisp band walls throughout; squared, slightly feathered ends upper left; grainy inner ring edge
Feibai
none
Open paper
white void bottom centre; diagonal wedge between sectors; both upper corners
Chance marks
dark speck at upper left edge; faint specks above left sector; crease lines through greys
Frame
ink runs off bottom, left and top edges; upper corners stay open

A great wheel turns across the paper. Its hub sits at the bottom edge, a white opening the rings bend around, and the bands rise from the lower left, cross the top and come down hard at the right. A second sector at the left, cut off by a wedge of bare paper, keeps the turn going past the frame.

The black arc is the engine. It sweeps from the centre to the lower right in one broad band, and its walls hold true the whole way. Behind it the greys step outward in translucent courses, palest at the rim. On this half-sized bark paper each pass stays where it fell, so the order of laying reads ring by ring across the upper right. Beneath the black, the inner ring runs dry and grainy, the paper's tooth showing through like weathered stone.

The costs are real and small. The black barely moves inside. It is dense enough to seal the fibre, so it sits on the passes beneath rather than showing them. Fine crease lines cross the greys at right and centre where wash settled into folds, and the square ends of the upper-left greys stop bluntly.

The wheel turns with such weight and such clear order that it reads as a built thing, larger than its edges, every grey in its place. Sheets like this are why the others get made.

Measured

How it was read

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_335T_335, tone-stretchedT_335, classed by brightness
80%of the sheet carries ink
Black 40%Grey 52%Light 9% SHARE OF THE INK, NOT OF THE SHEET
TONAL STEPS

7 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: 0.054 (under 0.045 reads as flat).

0.300.751234567 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
Form3FLUENT3FLUENT3FLUENT3FLUENT3FLUENT3.0
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering3ORDERED3ORDERED3ORDERED3ORDERED3ORDERED3.0
Composition2WORKING3COMMANDING3COMMANDING3COMMANDING3COMMANDING2.8
Material and surface2SOUND2SOUND2SOUND2SOUND2SOUND2.0

READ 1, IN ITS OWN WORDS

“A concentric arc sheet in R3's family, with fluent arcs and ordered translucent layering. The black arc is fairly flat inside and the composition is less resolved than R3's. The surface is sound, with only minor crease marks.”

Form · FLUENT

Concentric arc bands follow the brush's curved travel; walls hold cleanly. Squared stepped terminations at the upper-left greys are slightly blunt, but not clumsy.

WEAKEST Stepped blocky ends of upper-left grey bands

STRONGEST Broad black arc sweeping centre to bottom right

Tonal depth · MODELLED

Seven tonal steps across many grey bands. Interior modulation of 0.054 is only modest, and the large black arc and the black block at left read mostly flat inside.

WEAKEST Main black arc interior nearly uniform

STRONGEST Dry-brush inner grey arc, bottom centre

Layering · ORDERED

Several translucent grey passes overlap in a readable order, building out from black to pale outer arcs at right and left. The overlaps stay legible.

WEAKEST Black arc covers rather than shows underlying passes

STRONGEST Stacked translucent grey arcs, upper right

Composition · WORKING

The concentric sweep gives clear direction and the white core is shaped. The left fragment and the top-left paper wedge feel less resolved than R3's balanced opening.

WEAKEST Left arc fragment feels cut off and wedged

STRONGEST Large arc sweep around the white centre

Material and surface · SOUND

Ink is controlled with no tide lines or rings. Crease networks show in the greys at right and centre, and there is a small speck at the left edge.

WEAKEST Paper crease lines visible through grey bands

STRONGEST Grainy dry-brush texture in inner arc

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, 12 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.

4 × OTHER“small dark speck at left edge”1 × OTHER“Crease/crackle lines through grey bands”1 × OTHER“Crease lines in inner grey arc near centre”4 × OTHER“crease/wrinkle lines across grey arcs”2 × WATER STAIN, OTHER“mottled cloudy patch in the inner grey arc ab…”WATER STAINOTHER
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 5 principal ink masses traced (cyan), 3 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 23 edge segments, 39% crisp, 52% soft or bloomed, 9% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3

The rating these readings produce, the rules applied and the arithmetic, with Peter's own rating where he gave one, are in the Archive record.

Date

2026.06.03, day 157 of the Crucible Year, one of 12 paintings from that date. 18 works were registered in the fourteen days before. Paintings are dated by the day their batch was registered and photographed; each was finished that day or within the few days before. Phase: P3 The Floor Rises (working title).

Every painting from 2026.06.03 is shown here. 2 other dates with more than five works can say the same.
THE YEAR

T_335 among all 402

Every painting of the year by date; this one is outlined.

Every painting from 2026.06.03 · This date in the year

Materials

Paper
Red Star Mo She Special Effect Xieyi Edition, half-raw (June 2025 batch), China Xuan Paper Co., Ltd., made 2025.06.07
Ink MB4
Yi De Ge Refined Ink Juice, Yi De Ge (Beijing)
Ink MB5
Boku-Undo Genso, Boku-Undo
Ink MB6
Yi De Ge Yun Tou Yan, Yi De Ge (Beijing)
The sheet of paper was made 361 days before this painting.
When each paper was in use