Crucible Year Peter Yuill
A broad black and grey arch sweeps from lower left to the right edge, enclosing a white opening, with grey rectangles stacked at left. T_316, tone-stretched: what the model was shownT_316: every pixel as the measuring code classes it
97 × 180 cm · the whole sheet, uncropped

T_316

The engine's reading

A black and grey arch climbs out of stacked grey slabs and drops down the right edge, closing a round of bare paper washed with pink.

Record
Date
2026.05.24
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, colour inks
Enquire about T_316Availability, price or a studio visit. Peter replies himself; asking commits you to nothing.

The pale ring up in the black is a breathing hole in winter ice, the kind a seal keeps open all season with its nose. You wait beside it. The water underneath is darker than anything above it, and patient, and sometimes something whiskered comes up, takes one long look at you, and decides you are weather. The rest of the ice that winter was heavy and grey and piled wrong along the shore where the wind had shoved it. Nothing came up all afternoon. The hole stayed open anyway, a small round mouth in the dark, the low sun dropping into it and going out.

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 arch of concentric bands; grey slabs stacked at left, joined under the arch
Movement
rises left to right over the arch; flat left slabs run against it
Coverage
ink on about four fifths of the paper
Tone
four tonal steps, weighted dark
Layering
grey slabs, black arcs, translucent grey arc, colour washes; readable at top centre
Edges
crisp on the arch contours; soft and broken in the left slabs and lower left
Feibai
present, along the descending right arc and its inner edge over the opening
Open paper
rounded white opening under the arch, lower right; smaller wedge at top left
Colour
pink wash slanting across the opening; rust red low at left
Chance marks
pale ring inside the top of the black arc; spatter and drops on upper-left paper
Frame
ink runs off left, bottom, right and top centre; top-left corner stays open

A great arch rises from the lower left, touches the top edge and comes down hard at the right, closing a round of bare paper beneath it. It is built in bands: black within, translucent grey outside.

The right side is where the painting lives. The grey sweeps down with the brush, its grain combed into arcs, its tone stepping from smoke to near black, and flying white opens along the sweep. At the top that grey crosses the black and both passes stay legible, because the half-sized bark paper holds each layer where it lands. A pink wash slants across the opening and warms it.

The left third stalls. Grey rectangles stack stiffly against the edge, the rust wash beneath them clouds, and the inner black arch is laid so densely that it closes into one flat dark. A pale ring sits inside its top, an accident in the place that most needed quiet.

A good arch, then, half delivered: the descending grey is worth standing in front of, the left flank is not, and the sheet sits squarely among the archive's usual 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_316T_316, tone-stretchedT_316, classed by brightness
79%of the sheet carries ink
Black 62%Grey 33% 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: 0.067 (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, 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
Form2BUILT2BUILT2BUILT2BUILT2BUILT2.0
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering2LEGIBLE2LEGIBLE2LEGIBLE3ORDERED2LEGIBLE2.2
Composition2WORKING2WORKING2WORKING3COMMANDING2WORKING2.2
Material and surface1FLAWED1FLAWED1FLAWED1FLAWED1FLAWED1.0

READ 1, IN ITS OWN WORDS

“A bold arching composition with a well-shaped white opening and readable passes. The heavy black arcs are flat inside, the left side is crowded and murky, and a pale ring inside the upper black arc pulls Material down.”

Form · BUILT

The concentric arcs hold their walls and follow the stroke's curve. The left grey rectangles are slab-like, and the lower-left area is untidy and loosely joined.

WEAKEST Blocky grey slab and muddled strokes at left edge

STRONGEST Right outer arc following the brush's sweep

Tonal depth · MODELLED

The right arc and upper band show arcing grain and stepped density, with 4 tonal steps. The large central-left black arcs read flat and surface-like in the colour view.

WEAKEST Inner left black arc is nearly uniform inside

STRONGEST Right arc band with brush-grain arcs and graded grey

Layering · LEGIBLE

Grey band, black arcs, overlapping translucent arc and pink wash are distinct passes. They stay readable at the top-centre crossing, but the bottom left is murky.

WEAKEST Lower left, where grey, red and black blur together

STRONGEST Translucent grey arc crossing over the black arc at top

Composition · WORKING

The big arch sweep moves the eye left to right, and the white inner opening is well shaped. The ink covers 79% of the sheet, so the left third feels jammed and heavy.

WEAKEST Crowded, unresolved left third

STRONGEST White arch opening framed by the sweeping arcs

Material and surface · FLAWED

A pale circular ring sits inside the black arc near the top centre and shows in both views. Spatter dots fall on the upper-left paper, and the lower-left wash is cloudy.

WEAKEST Pale ring inside the top of the black arc

STRONGEST Dry-brush streaks and grain in right arc

FLAWS

4 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 4 distinct places, 13 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, WATER STAIN“stray ink spatter dots on upper-left paper”6 × RING, OTHER · MAJOR“pale circle inside upper black arc near its t…”1 × WATER STAIN“cloudy wash in left grey slab”1 × MUD“cloudy grey wash merging with strokes at lowe…”WATER STAINRINGMUDOTHERMAJOR
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 3 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 20 edge segments, 40% crisp, 30% soft or bloomed, 30% 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

2026.05.24, day 147 of the Crucible Year, one of 10 paintings from that date (9 shown). 15 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).

Made after a calmer fortnight than 15 of the 15 dates before it.
THE YEAR

T_316 among all 402

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

Every painting from 2026.05.24 · 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)
Colour
colour inks, recorded together
The sheet of paper was made 130 days before this painting.
When each paper was in use