Crucible Year Peter Yuill
Large black and grey arc segments sweep from lower left to right across white paper, with small red patches at the top. T_415, tone-stretched: what the model was shownT_415: every pixel as the measuring code classes it
97 × 180 cm · the whole sheet, uncropped

T_415

The engine's reading

A huge broken ink wheel rolls off the right edge of the paper, black at its core, dry-streaked at its turn, with red along its crest.

Record
Date
2026.11.03
Dimensions
97 × 180 cm
Rating
6.2
Paper
Half-Cooked Red Star Mo She 6-Foot Bark Xuan Paper, self-sized
Ink
Yi De Ge Yun Tou Yan, Boku-Undo Gentoku Super Concentrated, Yi De Ge Pine Soot Ink, Shisan Yue Calligraphy and Painting Ink, colour inks
Enquire about T_415Availability, price or a studio visit. Peter replies himself; asking commits you to nothing.

The great black curve is the flyover, and everything good in this city happens under it. They built it to carry traffic past us and it turned out to be a roof. Within a year there were noodles. Then a barber, a man who fixes only rice cookers, a Thursday church, a small shrine to whoever died pouring the deck. Up on the rim the red tail lights crawl toward somewhere better, and none of them looks down. I have eaten under that thing through three monsoons. The council sends a letter every spring, and the barber frames them. When the rain comes it falls off the edge in one long curtain, and forty people shift their stools a hand to the left without looking up.

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 V23's reads, from the settled findings, and checked by hand before approval. It explains V23's numbers and may not change them.

Structure
broken concentric arcs: central black segment, outer grey band, upper-right bars, separate lower-left wedge
Movement
one sweep from lower left over the top to the right; spatter and pale washes cut across
Coverage
ink on about nine tenths of the paper
Tone
four tonal steps, weighted dark
Layering
pale wash, grey band, black block and red pass; readable at upper right and left flank
Edges
crisp on black blocks; stepped on grey left flank; broken on lower-left band and pale washes
Feibai
present, in concentric streaks through the lower right of the central black arc
Open paper
irregular wedge across the upper left; smaller gap at low centre beneath the arc
Colour
red and orange ink along the top edge, at centre and right, fused with grey
Chance marks
spatter top centre; speckled stain upper band; creases lower grey; pale bloom in central black
Frame
runs off left, bottom, right and top; upper-left corner and lower centre stay open

A huge broken wheel crosses the paper, rising from the blunt wedge at lower left, jumping a gap of white, and rolling down off the right edge. The sweep registers from across a room and gives the bare paper at upper left and low centre real shape. Then the black arrives, and it is very large.

The life is at the rim of that black. At lower right the brush ran dry along the curve and left concentric streaks of paper through the dark, so the mass turns and has grain. Above it, a pair of dark bands overlap and stay see-through, the half-sized bark paper slowing the sink enough to keep each pass readable. A little red along the top warms the crest and stays small.

The middle pays. The left half of the black is a flat, cloudy slab with a stiff cut end, and it buries the passes beneath it. Speckled staining dirties the grey band beside the upper bars, and it shows. Fine creases low in the grey wedge are absorbed.

A clear arc and lively corners, with too much filled black between them. It is a competent large sheet, good to walk along at the edges and shut in the middle.

Read and measured

The rating

THE RATING

T_415, rated 6.2

The combined score, out of 10: V23's reading of the photograph as the read half and V24's twelve tests on the 16-bit file as the measured half, added and divided by 10. The scale is relative to this archive. How each half is made is on the Method page.

READ HALF25.0V23's rating, 5.0, × 5
+
MEASURED HALF37.4twelve tests, of 50
→
RATING6.262.4 ÷ 10
THE READ HALF, V23
Form
2.0 · built
Tonal depth
2.0 · modelled
Layering
2.0 · legible
Composition
2.0 · working
Material and surface
1.0 · flawed
THE MEASURED HALF, V24
Mass
10.0 of 10
Tone
8.2 of 14
Void
6.4 of 8
Flow
8.0 of 10
Balance
4.8 of 8
Measured

How it was measured

FROM THE 16-BIT FILE

What V24 measured.

Plain physical facts with no model involved. Across the year they track how the practice changes. On one sheet they cannot say whether a mark is any good. Millimetres read a few percent high, because the photographs are cropped just inside the paper's edge.

MASS WIDTH279 mm

The width of the ink mask along its medial axis.

DEPTH OF THE DARKS1.81

Optical density at the 75th percentile of the sheet.

LARGEST VOID296 mm

The radius of the largest circle of open paper.

DIRECTIONS0.16

How far the marks align across the sheet. Lower means they run several ways.

BALANCE0.69

Left and right asymmetry of the ink. Lower is more even.

THE FILE3.87

Pixels to the millimetre in the TIFF these were measured from, with the studio light removed.

Read by the Visual Analysis Engine, version 23.13, on 2026.11.03: 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_415T_415, tone-stretchedT_415, classed by brightness
86%of the sheet carries ink
Black 63%Grey 29%Light 8% SHARE OF THE INK, NOT OF THE SHEET
TONAL STEPS

4 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: 0.055 (under 0.045 reads as flat).

0.300.751234 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, one answer.

Each quality placed on its ladder by each read, and the mean the engine keeps.

READ 1READ 2READ 3READ 4READ 5MEAN
Form2BUILT2BUILT2BUILT2BUILT2BUILT2.0
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2.0
Composition2WORKING2WORKING2WORKING2WORKING2WORKING2.0
Material and surface1FLAWED1FLAWED1FLAWED1FLAWED1FLAWED1.0

READ 1, IN ITS OWN WORDS

“A broken concentric arc with real sweep and shaped white gaps, but its central black is bulky and partly flat, layering is modest, and blotchy speckling mars the upper grey band.”

Form · BUILT

Concentric arc segments are coherent with holding walls, but the huge central black and blunt lower-left wedge remain bulky, more filled-in than stroked, unlike R3's fluent bands.

WEAKEST Bulky central black arc, heavily filled; blunt left wedge

STRONGEST Upper-right dark bands following the arc's travel

Tonal depth · MODELLED

Stretched view shows grain and arcs in the central black's lower right and mottled greys above, but its left half stays nearly uniform; modulation only modestly clears flat.

WEAKEST Left half of central black, flat and cloudy inside

STRONGEST Grained, striated right side of the central black arc

Layering · LEGIBLE

Grey wash, black arcs, overlapping upper-right bands and red pass read distinctly, but few overlaps build depth; the central black covers rather than layers, short of R3's sequence.

WEAKEST Central black mostly covers the earlier passes beneath it

STRONGEST Translucent overlap of the two upper-right dark bands

Composition · WORKING

The arc carries the eye from lower-left wedge across the top to the right, and the white gaps are shaped, but the central mass crowds and weighs the sheet.

WEAKEST Massive central black dominates; lower right is heavy and dead

STRONGEST Broken arc sweeping from lower left over to right

Material and surface · FLAWED

Dark speckling and dirty mottling in the upper grey band show in colour beside principal masses; cloudy patch inside central black in stretched view; creases in lower grey wedge.

WEAKEST Blotchy speckled grey band beside upper-right dark bands

STRONGEST Dry-brush striations at lower right of central arc

FLAWS

5 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 5 distinct places, 19 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, BLOOM“Fine crease lines crossing the grey band abov…”5 × WATER STAIN · MAJOR“Speckled, blotchy mottling in the upper grey …”1 × BLOOM“Blotchy mottling in the grey band around the …”5 × WATER STAIN, BLOOM, DEAD INK“Cloudy pale patch inside left half of central…”3 × OTHER“Fine crease lines across the lower grey wedge…”WATER STAINBLOOMDEAD INKOTHERMAJOR

V23's rules and arithmetic, and every figure under its own name, are in the Archive record.

Date

2026.11.03, day 310 of the Crucible Year, one of 11 paintings from that date. 13 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: P4 S14 (working title).

Every painting from 2026.11.03 is on this site. 6 other dates with more than five works are shown in full.
THE YEAR

T_415 among all 419

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

Every painting from 2026.11.03 · This date in the year

Materials

Paper
Half-Cooked Red Star Mo She 6-Foot Bark Xuan Paper, self-sized, China Xuan Paper Co., Ltd., made 2026.04.08
Ink MB6
Yi De Ge Yun Tou Yan, Yi De Ge (Beijing)
Ink MB8
Boku-Undo Gentoku Super Concentrated, Boku-Undo
Ink MB9
Yi De Ge Pine Soot Ink, Yi De Ge (Beijing)
Ink MB10
Shisan Yue Calligraphy and Painting Ink, Shisan Yue (Thirteenth Month)
Colour
colour inks, recorded together
The sheet of paper was made 209 days before this painting.
When each paper was in use