Crucible Year Peter Yuill
A broad grey dry-brush arc sweeps from lower left over the top into a heavy black hooked stroke, with a grey diagonal band lower right. T_189, tone-stretched: what the model was shownT_189: every pixel as the measuring code classes it
97 × 180 cm · the whole sheet, uncropped

T_189

The engine's reading

A broad grey arc of dry brush rolls over the paper into a black hook, with a pale band climbing beneath toward the right edge.

Record
Date
2026.04.08
Dimensions
97 × 180 cm
Paper
Red Star Mo She Special Effect Xieyi Edition, raw
Ink
Kuretake Shogei Kiwami, Yi De Ge Zhonghua, Boku-Undo Bokkou
Enquire about T_189Availability, price or a studio visit. Peter replies himself; asking commits you to nothing.

The arc is exactly the length of an arm. I measured mine against it. It is the swipe my grandmother made across the fogged kitchen window with the heel of her hand, the whole radius of her shoulder, so I could see the yard. Streaks where the skin dragged. Clear glass where it lifted. Then I pressed my face into the middle of her clean place and left a dark, damp lump of a print, nose and breath and mouth, no detail in it at all, because I was too close to have any. She did not wipe it off. She let it fog back slowly, from the edges in, over the yard and the washing line.

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
great grey arc, black hook at centre, grey diagonal band below right
Movement
clockwise sweep from lower left over the top; band climbs rightward across it
Coverage
ink on about two thirds of the paper
Tone
three tonal steps, weighted to the middle greys
Layering
grey arc and band first, black hook over; readable where hook crosses arc
Edges
crisp striated rim on the arc; soft lobed hook edges; ragged band end
Feibai
present in the arc's upper right, where hairs part through the turn
Open paper
rounded white bay under the hook at bottom centre; top-right corner
Chance marks
pale-ringed drops below arc base; black spatter top right; crease lines through arc
Frame
band reaches right edge and bottom edge; arc grazes top; left edge open

A grey arc as wide as a broom rises from the lower left, rolls over the top of the paper and comes round into a black hook at the centre. A paler band climbs from below toward the right edge. The eye travels the whole circuit, then settles in the white bay under the hook.

The arc is the reason to stand here. Raw bark paper grips a dry brush hard and keeps every hair, so the stroke becomes a record of its own travel: dark stripes down the left flank, middle greys through the body, flying white at the upper right where the hairs part and the stroke turns. Where the hook crosses it, the grain still shows through.

The hook is the cost. Laid wet on paper that spreads fast, it swelled into lobes at its joins and dried to one even black, so the heaviest mark on the sheet is also the flattest. The band reads as an afterthought and crowds the lower corner. Ringed drops and crease lines in and below the arc are small, and the sheet takes them in.

A good painting, driven by one first-rate movement and held back by a centre that cannot match it.

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_189T_189, tone-stretchedT_189, classed by brightness
70%of the sheet carries ink
Black 25%Grey 51%Light 25% 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: 0.041 (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 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
Form2BUILT2BUILT2BUILT2BUILT2BUILT2.0
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2.0
Composition3COMMANDING2WORKING2WORKING2WORKING2WORKING2.2
Material and surface2SOUND2SOUND2SOUND2SOUND2SOUND2.0

READ 1, IN ITS OWN WORDS

“Strong sweeping dry-brush arc gives real movement and grain, but the central dark hook is bulky and flat inside, layering is two-pass, and small ringed drips sit below the arc.”

Form · BUILT

Arc's outline follows the stroke travel cleanly; central dark hook is a blunt, lobed fill with clumsy joins; lower-right wedge is serviceable but slab-like.

WEAKEST Central dark hook mass, bulky and lobed at joins

STRONGEST Great dry-brush arc following the brush's sweep

Tonal depth · MODELLED

Arc shows banding and dry-brush grain; tone-stretched view shows the central dark mass flat inside; measured dark modulation 0.041 confirms flat darks.

WEAKEST Central dark hook interior uniform flat grey

STRONGEST Arc's streaked grain and banded dark stripes

Layering · LEGIBLE

Grey arc and wedge as first pass, dark hook and strokes laid over; overlaps read clearly but only two passes, not building depth.

WEAKEST Dark hook simply covers the grey arc

STRONGEST Grey arc under dark hook strokes remains readable

Composition · COMMANDING

Large arc carries the eye from bottom left over the top into the hook and out the rightward wedge; open paper below the arc is shaped and active.

WEAKEST Lower-right wedge cut off, slightly heavy

STRONGEST Sweeping arc driving the eye into central hook

Material and surface · SOUND

Dry-brush grain controlled in arc; small pale-ringed drips bottom left and fine crease cracks through arc are minor, away from main dark mass.

WEAKEST Pale-ringed drops and crease lines

STRONGEST Dry-brush bristle grain across the arc

FLAWS

4 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 4 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.

1 × OTHER“crease or crack lines across the grey arc”4 × OTHER“paper crease lines cracking through grey arc”2 × DEAD INK“flat uniform interior of central dark hook”5 × RING“pale-rimmed ink drops below arc base”RINGDEAD INKOTHER
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 1 principal ink mass traced (cyan), 7 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 15 edge segments, 27% crisp, 53% soft or bloomed, 20% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4H5H6H7

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

2026.04.08, day 101 of the Crucible Year, one of 22 paintings from that date (11 shown). 37 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: P1 Warm-up (working title).

THE YEAR

T_189 among all 402

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

Every painting from 2026.04.08 · This date in the year

Materials

Paper
Red Star Mo She Special Effect Xieyi Edition, raw, China Xuan Paper Co., Ltd., made 2025.12.08
Ink MB1
Kuretake Shogei Kiwami, Kuretake
Ink MB2
Yi De Ge Zhonghua, Yi De Ge (Beijing)
Ink MB3
Boku-Undo Bokkou, Boku-Undo
The sheet of paper was made 121 days before this painting.
When each paper was in use