Crucible Year Peter Yuill
A grey arc sweeps from upper left along the bottom into a dense black mass at right, enclosing bare pale paper above. T_251, tone-stretched: what the model was shownT_251: every pixel as the measuring code classes it
70 × 180 cm · the whole sheet, uncropped

T_251

The engine's reading

A long bowl of ink, grey at the left and black at the right, swings across raw paper and cups a wide field of bare white above it.

Record
Date
2026.04.21
Dimensions
70 × 180 cm
Paper
Tanxi Thickened Grade A Special Jing Pi Small 6-Foot (raw)
Ink
Yi De Ge Refined Ink Juice, Boku-Undo Genso, Yi De Ge Yun Tou Yan
Enquire about T_251Availability, price or a studio visit. Peter replies himself; asking commits you to nothing.

Two pale lines run along the floor of the bowl, parallel and patient, the tracks of something that went round and round long before anyone kept count. Corals from the Devonian kept a growth line for every day, and their years hold more days than ours: the Earth spun faster then, and the Moon has been braking it ever since. The black at the right end has the manners of a collapsed star: it took what came near and gave none of it back. The spatter to the left is newer than everything and falling. I stood beside this one for an afternoon, which in the time of rock is the same as never. The basin in the middle stays open, a clean dish of light waiting for an ocean.

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 bowl-shaped arc, grey left arm running into a black right mass
Movement
down from top left, along the bottom, up the right; nothing runs against it
Coverage
ink on about three quarters of the paper
Tone
five tonal steps, weighted dark
Layering
three kinds of pass, pale grey, mid-grey, black; readable at left and top centre
Edges
crisp grooves along the bottom; soft feathered inner rim; broken lobes atop right mass
Feibai
present along the left arm and the lower arc
Open paper
broad rounded field in the upper centre, cupped by the arc
Chance marks
spatter across left and centre; dots at top left; drips atop right mass; bloom along inner rim
Frame
ink runs off left, bottom and right edges and top right; top left and centre stay open

A single bowl of ink spans the sheet. It drops from the top left as a grey arm, runs heavy along the bottom and climbs the right side into black, and the eye rides it the whole way. What it leaves matters as much as what it marks: a broad shape of bare paper in the upper centre, held like water in a cup.

The bottom of the bowl carries the sheet. The brush has split into streaks that follow its travel, and two pale grooves run the length of the band through greys that thicken and thin. On the left, a translucent grey sweep and a pale stroke near the top stay visible under later passes. The raw paper keeps each layer apart.

The right end is where it costs. The black climbs into a slab, lobed and dripping at the top, nearly flat inside, and it buries the greys it lands on and crowds the edge. Along the inner rim the same raw paper pulls the wet ink into a cloudy, feathered fringe.

One great gesture, carried from end to end with real control, and an emptiness shaped well enough to work as hard as the ink. The heavy end is a real price. The arc pays it and has plenty left.

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_251T_251, tone-stretchedT_251, classed by brightness
72%of the sheet carries ink
Black 52%Grey 34%Light 15% 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: 0.054 (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 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
Form2BUILT2BUILT2BUILT3FLUENT2BUILT2.2
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2.0
Composition3COMMANDING3COMMANDING3COMMANDING3COMMANDING3COMMANDING3.0
Material and surface2SOUND2SOUND2SOUND2SOUND2SOUND2.0

READ 1, IN ITS OWN WORDS

“A strong sweeping bowl composition with legible pale, mid and dark passes. The bulky, largely flat black mass at the right holds back form and tone. The surface is mostly sound, with minor rim mottling.”

Form · BUILT

The main arc follows the brush's travel and its walls hold, with grooves tracking it. The right-hand black mass is slab-like and lobed at the top edge, not shaped by a stroke.

WEAKEST Bulky, lobed dark mass at right edge

STRONGEST Sweeping bowl arc with parallel groove lines

Tonal depth · MODELLED

Modulation 0.054. The bottom of the bowl shows streaks, grain and arcs. The left arm grades from grey to dark. The top of the right mass reads as near-uniform black.

WEAKEST Upper right black mass largely flat

STRONGEST Bottom band with streaks, grooves and graded greys

Layering · LEGIBLE

There are three passes: the pale arc, the mid-grey sweep and the black pass. They stay legible on the left and at the top. On the right the black largely covers what lies beneath.

WEAKEST Dark right mass covers earlier passes

STRONGEST Pale grey arc in the top centre over mid-grey left arm

Composition · COMMANDING

One continuous sweep carries the eye from top left down through the bowl to the right. The empty upper centre is a shaped void that works with the ink. The weight on the right presses against the edge.

WEAKEST Right edge heavy and crowded by black mass

STRONGEST Bowl arc framing the empty upper-centre paper

Material and surface · SOUND

The ink is controlled and the groove lines are crisp. There is mottled, cloudy granulation along the inner rim at the centre and some drips at the top right. All are minor, and none is a large stain.

WEAKEST Cloudy, mottled fringe along the inner rim of the bowl

STRONGEST Dry-brush streaks and grooves in the bottom band

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, 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.

1 × OTHER“stray blots and drips near left edge”1 × BLOOM“speckled patch at the base of the pale top-ce…”4 × OTHER, BLOOM“drip runs and blobs at top of right black mass”4 × BLOOM“mottled cloudy fringe along inner rim of bowl”BLOOMOTHER
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 15 edge segments, 7% crisp, 67% soft or bloomed, 27% 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

2026.04.21, day 114 of the Crucible Year, one of 14 paintings from that date (10 shown). 63 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).

THE YEAR

T_251 among all 402

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

Every painting from 2026.04.21 · This date in the year

Materials

Paper
Tanxi Thickened Grade A Special Jing Pi Small 6-Foot (raw), Anhui Jingxian Tanxi Xuan Paper Art Products Co., Ltd., made 2015.11.19
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 3806 days before this painting.
When each paper was in use