Crucible Year Peter Yuill
Broad grey and black brushed arcs sweep from lower left to a dark block at upper right, under a pale cream bowl dotted with drips. T_236, tone-stretched: what the model was shownT_236: every pixel as the measuring code classes it
97 × 180 cm · the whole sheet, uncropped

T_236

The engine's reading

A black crescent swings from lower left into a dark slab at upper right, below a bowl of bare cream paper scattered with drips.

Record
Date
2026.04.18
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
Enquire about T_236Availability, price or a studio visit. Peter replies himself; asking commits you to nothing.

The drips at the top came down in a line, the way rain arrives on a dry field before the real weather: fat, spaced, one at a time, each one leaving a ring where the dust jumps. To the left everything had already gone grey and soaked, the hedges, the gate, the cows with their backs turned. To the right a black front came in square-shouldered, a barn on the move. And above it all, a clean bowl of light, the hole in the cloud that stays open just long enough to make you think you'll get home dry. You won't. The rings are already widening in the ditch.

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
black crescent across lower centre rising into a dark diagonal block, upper right
Movement
sweep from lower left to upper right; left grey wedge leans against it
Coverage
ink on about nine tenths of the paper
Tone
five tonal steps, weighted dark
Layering
grey washes, black bands, dry passes; order readable centre and right, lost left
Edges
crisp on crescent walls and block; soft in left greys; broken in dry tails
Feibai
present in the upper-right diagonal bands and the lower arc's left tail
Open paper
cream bowl at top centre, thin pale strips along bottom and left
Chance marks
drips and tide rings top centre-left; black dot and spots left centre
Frame
ink runs off left, right and top corners; top centre and bottom left open

A black crescent swings up from the lower left and drives into a dark block at the upper right, and the whole sheet tilts with it. Above the curve, a bowl of cream paper stays open, crossed by a loose arc of drips. Nearly everything else is ink.

The life is in the upper right. The diagonal bands break into flying white there: the hairs part into parallel streaks of bare paper, and the block underneath is grained and creased in stepped greys. The half-sized bark paper keeps each pass apart, so the translucent grey arcs under the crescent still read in their order across the centre.

The costs are as plain. Inside, the crescent is one even black. At full load, carbon black seals the paper, and the stroke loses its inside. The block it drives into is square and heavy, more slab than movement. The left third goes to cloud: grey over grey, water stains, a stray black dot, tide-ringed drips, and the order of passes lost.

So the sheet sits in the middle. Its direction is clear and its right side has a surface worth standing in front of. The rest is murk and flat black.

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_236T_236, tone-stretchedT_236, classed by brightness
88%of the sheet carries ink
Black 46%Grey 43%Light 11% 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: 0.067 (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
Form2BUILT2BUILT2BUILT2BUILT2BUILT2.0
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering3ORDERED2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2.2
Composition2WORKING2WORKING2WORKING2WORKING2WORKING2.0
Material and surface1FLAWED1FLAWED1FLAWED1FLAWED1FLAWED1.0

READ 1, IN ITS OWN WORDS

“A layered sheet with a strong sweeping black arc and translucent grey passes. It is let down by bulky slabs, a flat crescent core, a crowded left side and tide-ringed drips in the top-left wash.”

Form · BUILT

The lower black crescent follows the travel of the brush. The upper-right square dark block is slab-like and the grey left wedge is diffuse, so some bulk remains.

WEAKEST Upper-right black slab, bulky and squared

STRONGEST Lower curved black arc tapering into dry-brush tail

Tonal depth · MODELLED

There are five tonal steps and modulation measures 0.067. The upper-right block and the grey bands show grain and streaks, but the black crescent's core reads mostly flat.

WEAKEST Lower black crescent interior nearly flat

STRONGEST Upper-right block with grain and mottled density

Layering · ORDERED

Several translucent grey arcs and wedges overlap and stay legible beneath the black crescent and the upper-right slab. The order of passes reads across the centre and right.

WEAKEST Pale top-left wash with drip spatter muddles the order

STRONGEST Translucent grey arcs under black crescent and slab

Composition · WORKING

A strong curved movement runs from lower left to upper right against the cream void at top centre. With 88% coverage the left side is congested and the empty paper is small.

WEAKEST Crowded left half with diffuse grey wedge

STRONGEST Sweeping arc from lower left up to the right

Material and surface · FLAWED

In the colour view, ringed drip marks and tide-edged blotches sit in the pale wash at top left and top centre, next to the grey masses. There is also a stray dot and speckling.

WEAKEST Tide-ringed drips and blotches in top-left wash

STRONGEST Dry-brush streaks in lower crescent tail

FLAWS

6 distinct places, 3 major.

Each read must name every flaw and where it is, in a ninth of the sheet. Here the reads named flaws in 6 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.

1 × WATER STAIN · MAJOR“cloudy mottled grey wash at the upper left”5 × TIDE LINE, WATER STAIN, RING · MAJOR“ringed drips and blots in the pale wash at to…”8 × WATER STAIN, OTHER, MUD, BLOOM · MAJOR“mottled cloudy wash in the large grey left we…”3 × OTHER“paper creases visible through the dark masses”1 × BLOOM“blotchy spot left of the black crescent's sta…”WHOLE SHEET · 1 × OTHERWATER STAINBLOOMRINGTIDE LINEMUDOTHERMAJOR
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 1 principal ink mass traced (cyan), 8 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 16 edge segments, 38% crisp, 63% soft or bloomed, 0% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4H5H6H7H8

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

2026.04.18, 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_236 among all 402

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