Crucible Year Peter Yuill
Two arched black bands over a grey wash form a wide fan filling most of a pale landscape sheet, with spatter at lower left. T_238, tone-stretched: what the model was shownT_238: every pixel as the measuring code classes it
97 × 180 cm · the whole sheet, uncropped

T_238

The engine's reading

Two black arcs stack into a wide fan across pale paper, over a grey wash, with dry-brushed fragments at the left and ink spatter below.

Record
Date
2026.04.18
Dimensions
97 × 180 cm
Rating
5.5
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
Enquire about T_238Availability, price or a studio visit. Peter replies himself; asking commits you to nothing.

The folds run straight down through the dark, the way a winter blanket keeps its cupboard creases on the first night it comes out. Too heavy, that blanket, and I have slept beside it. Wool, then a quilt on top of the wool, because someone was cold once in another year and never forgave the house. By the small hours it has all migrated to one side of the bed, a black weight breathing on its own, and the other sleeper lies under nothing but a strip of pale sheet, curled to the shape of the gap. Neither sleeper wakes. The blanket is never given back. In the morning it is folded along the same lines and put away still warm, and the cupboard door does not quite shut.

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
narrower upper arc band laid over a broad lower arc band
Movement
arching sweep left to right; diagonal cuts at upper right run against it
Coverage
ink on about four fifths of the paper
Tone
two tonal steps, weighted dark
Layering
grey translucent pass under two dark passes; grey readable at left and bottom
Edges
crisp along upper band and its diagonal cuts; soft grey at left; broken lower right end
Feibai
at the left edge in the short dark strokes, and in the grey tail at upper right
Open paper
pale crescent below the arc, narrow strips along top and corners
Chance marks
spatter at lower left; blot cluster under lower band; crease lines and stains within
Frame
ink runs off the left edge; top and bottom stay largely open

A great dark fan opens across the paper, two arched bands stacked one on the other and sweeping from left to right. The arc registers at once, and it shapes the bare paper beneath into a pale crescent. Then the weight arrives. Ink covers most of the sheet, and little air is left at the top or the sides.

The upper band carries what life there is. The broad brush left horizontal tracks inside its black, and at the right end two diagonal cuts of reserved paper split it into blocks with clean edges. The half-sized paper holds those tracks instead of drowning them, and it keeps the first grey pass legible where it slips out beneath the lower arc along the bottom.

The lower band is where the sheet sinks. Dark went over dark until the interior turned cloudy and flat, mottled with water stains, and its right end stops in a blunt, dead blot. Vertical crease lines run through both bands, and the sheet does not absorb them.

That leaves a single good gesture buried under its own mass. The fan reads at a glance, but past the upper band the black does nothing more.

Read and measured

The rating

THE RATING

T_238, rated 5.5

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 HALF21.0V23's rating, 4.2, × 5
+
MEASURED HALF34.5twelve tests, of 50
→
RATING5.555.5 ÷ 10
THE READ HALF, V23
Form
2.0 · built
Tonal depth
1.0 · thin
Layering
2.0 · legible
Composition
2.0 · working
Material and surface
1.0 · flawed
THE MEASURED HALF, V24
Mass
8.1 of 10
Tone
5.6 of 14
Void
8.0 of 8
Flow
4.8 of 10
Balance
8.0 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 WIDTH172 mm

The width of the ink mask along its medial axis.

DEPTH OF THE DARKS1.40

Optical density at the 75th percentile of the sheet.

LARGEST VOID198 mm

The radius of the largest circle of open paper.

DIRECTIONS0.35

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

BALANCE0.32

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

THE FILE3.54

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

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_238T_238, tone-stretchedT_238, classed by brightness
79%of the sheet carries ink
Black 72%Grey 21% SHARE OF THE INK, NOT OF THE SHEET
TONAL STEPS

2 families of tone.

Every inked pixel's brightness in 64 bins, smoothed; each circled peak holds at least 4% of the ink. Two or fewer: Tonal depth is held at the bottom rung whatever the model reads. A dense sheet of many translucent passes can count low here, so Layering is left to the reads. Life inside the black: 0.049 (under 0.045 reads as flat).

0.300.7512 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 depth1THIN2MODELLED2MODELLED2MODELLED2MODELLED1.8
Layering2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2.0
Composition2WORKING2WORKING2WORKING2WORKING2WORKING2.0
Material and surface1FLAWED1FLAWED1FLAWED1FLAWED1FLAWED1.0

READ 1, IN ITS OWN WORDS

“The double-arc gesture has real direction, but the sheet is crowded and mostly one heavy dark with thin internal tone. Seam lines and mottling inside the principal masses mark the surface. It sits below average overall.”

Form · BUILT

Two arched bands follow the sweep of a broad brush and their walls hold. The lower band is heavy and filled in, and the left edge is ragged.

WEAKEST Bulky lower arc band, slab-like and filled in

STRONGEST Upper arc band with crisp diagonal reserve cuts

Tonal depth · THIN

Only 2 tonal steps, and interior modulation (0.049) is barely above flat. Some banding shows in the upper band, but the lower mass is a cloudy dark with little modelling.

WEAKEST Lower band interior, a cloudy and flat dark

STRONGEST Horizontal brush banding in the upper band

Layering · LEGIBLE

Grey under-passes at the left and bottom stay legible beneath the dark arcs, and the upper band clearly overlaps the lower one. The tone families are limited.

WEAKEST Dark core where the bands fuse into one tone

STRONGEST Translucent grey arc under the lower band at the bottom

Composition · WORKING

The double arc sets up a clear curved movement, but at 79% coverage it leaves little shaped empty paper, and the mass feels jammed against the edges.

WEAKEST Crowded centre; the ink fills almost the whole sheet

STRONGEST Arching sweep carrying the eye left to right

Material and surface · FLAWED

Vertical seam or crease lines cut through both dark bands, there are blotchy mottled spots inside the lower band, and paper discolouration and spots sit at the bottom left.

WEAKEST Mottled, cloudy wash inside the lower dark band

STRONGEST Dry-brush streaks at the left edge

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, 17 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.

7 × OTHER, WATER STAIN, DEAD INK · MAJOR“vertical seam/crease lines through both dark …”1 × DEAD INK“flat dark right end of lower band”3 × OTHER, WATER STAIN“paper discolouration and spotting below the a…”5 × OTHER, WATER STAIN“blots and spatter below lower arc edge”1 × WATER STAIN“brownish paper discolouration below and besid…”WATER STAINDEAD INKOTHERMAJOR
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 1 principal ink mass traced (cyan), 1 enclosed void at true size in its grid cells (amber), the main gesture from start to end (red). Of 14 edge segments, 93% crisp, 7% soft or bloomed, 0% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1

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

Date

2026.04.18, day 111 of the Crucible Year, one of 12 paintings from that date (8 shown). 56 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_238 among all 419

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

Every painting from 2026.04.18 · 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)
The sheet of paper was made 94 days before this painting.
When each paper was in use