Crucible Year Peter Yuill
Wide grey and black ink bands fan in a great arc around a small white opening at bottom centre, heaviest and blockiest on the right. T_356, tone-stretched: what the model was shownT_356: every pixel as the measuring code classes it
97 × 180 cm · the whole sheet, uncropped

T_356

The engine's reading

Translucent grey bands wheel from the left edge, over the top and down into heavy black slabs, all hinged on a small white opening low in the middle.

Record
Date
2026.06.14
Dimensions
97 × 180 cm
Paper
Red Star Mo She Imitation Antique Chu Bark, Exhibition Edition, half-raw
Ink
Yi De Ge Refined Ink Juice, Boku-Undo Genso, Yi De Ge Yun Tou Yan
Enquire about T_356Availability, price or a studio visit. Peter replies himself; asking commits you to nothing.

The white hole low in the middle is the sun just under a bank of cloud, and the dark bands fanning out from it are the shadows the cloud throws up across the sky. Some call the bright ones Jacob's ladder. They look as if they spread from a single point, like the ribs of a fan, but they run side by side; only distance bends them together, the way railway lines meet at the horizon. I watched this from a harbour wall at the end of a wet day, the whole sky striped like a held breath. The ring at the right is a gull, turning. Then the sun dropped a little further, and the ladder came down.

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
one broad fan of arc bands around a low opening; squared slabs stacked at right
Movement
a clockwise sweep from left edge over the top; right-hand slabs sit square against it
Coverage
ink on about four fifths of the paper
Tone
two tonal steps, weighted dark
Layering
many translucent passes; readable across the left fan, merged in the right darks
Edges
crisp squared band ends at the rim; soft grey fringes beyond; broken dry ends here and there
Feibai
along the upper-centre bands and through the left fan's arcs
Open paper
a pale strip along the top, a small white hole at bottom centre
Chance marks
circular ring inside the lower-right dark block; small dark specks at top right
Frame
runs off left and bottom edges, touches top centre; top corners stay open

A wheel of grey bands turns across the paper, rising from the left edge, cresting at the top and coming down hard on the right, all of it hinged on a small white opening low in the middle. The sweep reads at once, and it is the sheet's real idea.

The left fan is the reason to stay. Each band there follows the brush round the curve with firm walls, and the translucent passes stack without drowning. The half-sized paper holds a wet edge, so an earlier band still shows through a later one, and parted hairs leave fine grain running the length of each arc.

The right half pays for it. The arcs harden into square slabs, stroke turning into fill, and the passes pile up until they close into one dense black. The big block at lower right is nearly flat inside, and a circular ring sits in it like a stain on a tabletop. Little paper survives on that side to breathe.

So the sheet is half of a good painting. The left fan holds its place; the right sits on it, and the whole lands as sound, ordinary work.

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_356T_356, tone-stretchedT_356, classed by brightness
85%of the sheet carries ink
Black 64%Grey 32% SHARE OF THE INK, NOT OF THE SHEET
TONAL STEPS

2 families of tone.

Every inked pixel's brightness in 64 bins, smoothed; each circled peak holds at least 4% of the ink. Two or fewer: Tonal depth is held at the bottom rung whatever the model reads. A dense sheet of many translucent passes can count low here, so Layering is left to the reads. Life inside the black: 0.046 (under 0.045 reads as flat).

0.300.7512 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 3 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
Form3FLUENT2BUILT2BUILT2BUILT2BUILT2.2
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering3ORDERED2LEGIBLE3ORDERED3ORDERED3ORDERED2.8
Composition2WORKING2WORKING2WORKING2WORKING2WORKING2.0
Material and surface1FLAWED1FLAWED1FLAWED1FLAWED1FLAWED1.0

READ 1, IN ITS OWN WORDS

“This sheet uses the same radial-arc language as R3, with legible translucent layering, but it is more crowded and its darks are flatter. A visible ring inside the lower-right dark mass lowers the material score.”

Form · FLUENT

The radial bands keep firm walls and curve with the stroke on the left and through the centre. The right-side slabs are squarer but still read as made marks.

WEAKEST Blocky rectangular slabs in the right-hand mass

STRONGEST Radiating arc bands at left that follow the brush's travel

Tonal depth · MODELLED

Only two tonal steps were measured, and interior modulation (0.046) is barely above the flat line. Streaks and banding show in the arcs, but the dense lower-right mass reads flat.

WEAKEST Lower-right dark block is nearly flat inside

STRONGEST Banded grain inside the upper-left fan of arcs

Layering · ORDERED

Many translucent passes overlap in sequence across both fans, and their edges stay readable. In the darkest right areas the overlaps thicken and are harder to tell apart.

WEAKEST Dense right overlaps where passes merge into dark

STRONGEST Stacked translucent arc bands on the left fan

Composition · WORKING

A clear sweep of arcs turns around the pale opening at the bottom centre. With 85% of the sheet inked, the right side is jammed and the empty paper has little shape.

WEAKEST Crowded, heavy right half with little paper left

STRONGEST Sweeping radial arc around the pale central opening

Material and surface · FLAWED

A circular ring/tide mark sits inside the dark block at the lower right and shows in both the colour and stretched views. Small spots appear at the top right.

WEAKEST Ring mark inside lower-right dark mass

STRONGEST Dry-brush streaking along the arc bands

FLAWS

2 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 2 distinct places, 10 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 × OTHER“small dark specks on the paper at the top rig…”5 × RING · MAJOR“circular ring inside the lower-right dark blo…”RINGOTHERMAJOR
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 1 principal ink mass traced (cyan), 5 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 14 edge segments, 71% crisp, 21% soft or bloomed, 7% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4H5

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

2026.06.14, day 168 of the Crucible Year, one of 8 paintings from that date (7 shown). 31 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).

THE YEAR

T_356 among all 402

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

Every painting from 2026.06.14 · This date in the year

Materials

Paper
Red Star Mo She Imitation Antique Chu Bark, Exhibition Edition, half-raw, China Xuan Paper Co., Ltd. (中国宣纸股份有限公司), made 2026.01.14
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 151 days before this painting.
When each paper was in use