Crucible Year Peter Yuill
A broad grey and black arc sweeps from the left over the top to the bottom right corner, with bare paper at lower left. T_283, tone-stretched: what the model was shownT_283: every pixel as the measuring code classes it
97 × 180 cm · the whole sheet, uncropped

T_283

The engine's reading

A fan of grey and black ink bands rising from the left, cresting along the top and coming down into the bottom right corner.

Record
Date
2026.05.07
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_283Availability, price or a studio visit. Peter replies himself; asking commits you to nothing.

I read the bands as rock. Grey beds laid down in some shallow sea, then a coal seam, black and dense, a whole forest pressed flat for longer than anything has had a name. Then the shove from below, and the stack bent up into an arch, slowly enough that the sea never noticed it was leaving. The seam ends square at the left, the way seams end at a fault: the rest of it went sideways and lives under some other country now. Up top the beds fray into fine white lines where the weather has been at them. Weather has all the time there is. I like the coal best. Somewhere inside it, a leaf is still facing the sun.

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, grey outside, black band through the middle, pale inner arcs
Movement
one sweep from left, over the top, down to bottom right; nothing runs against it
Coverage
ink on about four fifths of the paper
Tone
five tonal steps, weighted to the middle greys
Layering
three kinds of pass, pale wash, banded grey, dense black; readable at left ends
Edges
broken split hairs at top left; crisp squared black end at centre left
Feibai
present in the upper grey arc's tail at top left
Open paper
lower left wedge of bare paper, and a low dome under the inner arcs
Chance marks
ink drops and spatter in the left margin; faint paper creases throughout
Frame
ink runs off the right edge and bottom right; left and lower left stay open

A fan of ink takes the sheet in one movement. It lifts from the left, rides the top edge and comes down hard into the bottom right corner, where it leaves the paper. Grey bands travel the outside, a black band runs through the middle, and thin pale arcs settle underneath.

The upper grey arc is the heart of it. At top left its tail splits into hairs, and the streaks of bare paper run with the stroke, still holding its line. Across the top the greys stand in clear steps, banded and streaked, because the half-raw paper keeps an edge and lets each wash rest on the one before without sinking into it. At the left the arc ends stagger, translucent, so the order of the passes reads plainly.

The black band is where the sheet pays. Inside it is one flat dark, moving only at its edges, and its squared left end stops the sweep like a cut. It covers the passes beneath and adds nothing to them. Below it, the lower left paper has no shape of its own.

Those costs are real and contained. The movement is whole, the greys are deep, and the brushwork at the top stands with the finest on any sheet.

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_283T_283, tone-stretchedT_283, classed by brightness
84%of the sheet carries ink
Black 39%Grey 55% 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: 0.030 (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, 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
Form2BUILT3FLUENT3FLUENT2BUILT2BUILT2.4
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering2LEGIBLE3ORDERED3ORDERED2LEGIBLE2LEGIBLE2.4
Composition2WORKING2WORKING2WORKING2WORKING2WORKING2.0
Material and surface2SOUND2SOUND2SOUND2SOUND2SOUND2.0

READ 1, IN ITS OWN WORDS

“This is a confident arc composition in the family of R3, but it has fewer passes and its dominant black band is flat inside. The sheet is sound and ordinary overall: it works without standing out.”

Form · BUILT

Arcs follow the sweep of the brush and hold their walls. The lower black band is a heavy slab, though, and its left ends are cut off bluntly.

WEAKEST Bulky dark lower arc with blunt squared left end

STRONGEST Upper grey arc's dry-brush tail, top left

Tonal depth · MODELLED

The upper arcs show banding and stepped greys, with 5 tonal steps. The interior of the main dark arc is flat (modulation 0.030); tone changes only near its edges.

WEAKEST Flat interior of lower black arc

STRONGEST Banded grey upper arcs, top right

Layering · LEGIBLE

Two or three translucent arc passes stagger at the left ends and lower centre and stay legible. The dark band mostly covers what lies beneath it.

WEAKEST Dark arc covers earlier passes beneath it

STRONGEST Staggered translucent arc ends at left

Composition · WORKING

A single fan sweep carries the eye from the left up and down to the bottom right. The paper under the arc is shaped, but the ink covers 84% of the sheet and the top is crowded.

WEAKEST Crowded upper half with little breathing paper

STRONGEST Sweeping arc movement left to bottom right

Material and surface · SOUND

The ink is controlled. Small spatter drops sit on the paper at the left, away from the main masses, and paper creases show only faintly. No tide lines in the dark masses.

WEAKEST Stray drips near left arc ends

STRONGEST Dry-brush streaks in upper arc edges

FLAWS

3 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 3 distinct places, 11 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.

1 × OTHER“pale vertical streak breaking upper arc”5 × OTHER“Stray ink drops on paper left of arc ends”WHOLE SHEET · 5 × OTHEROTHER
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 2 principal ink masses traced (cyan), 4 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 16 edge segments, 13% crisp, 38% soft or bloomed, 50% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4

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

2026.05.07, day 130 of the Crucible Year, one of 19 paintings from that date (14 shown). 16 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: P2 The Switch (working title).

Made after a calmer fortnight than 16 of the 17 dates before it.
THE YEAR

T_283 among all 402

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

Every painting from 2026.05.07 · 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 334 days before this painting.
When each paper was in use