Crucible Year Peter Yuill
Grey concentric arcs sweep from upper left to the right, ending in a black dry-brush ring around a white disc, with drips at lower left. T_281, tone-stretched: what the model was shownT_281: every pixel as the measuring code classes it
97 × 180 cm · the whole sheet, uncropped

T_281

The engine's reading

Grey arcs fan across a bark-paper sheet and tighten into a black, dry-brushed ring around a disc of bare paper, with grey runs falling at lower left.

Record
Date
2026.05.07
Dimensions
97 × 180 cm
Paper
Red Star Mo She Special Effect Xieyi Edition, half-raw (June 2025 batch)
Ink
Yi De Ge Refined Ink Juice, Boku-Undo Genso, Yi De Ge Yun Tou Yan
Enquire about T_281Availability, price or a studio visit. Peter replies himself; asking commits you to nothing.

The ouroboros is a serpent swallowing its own tail, a circle that feeds on itself and never ends. This one coiled round the moon instead, and was told it could keep her if it never closed the ring. Look where the head stops: square, blunt, a hand short of the tail, as if it bit down on the rule. The moon stays white in there, unswallowed, which is how such bargains go: you get the thing and never the having. Up the hill the older coils, the grey ones, are weeping down into the field, which is what the earlier bargains cost. And the moon sits in the black ring, patient, like an egg the serpent cannot bring itself to break.

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
nested concentric arcs, closing in a black ring around a white disc
Movement
clockwise spiral inward from upper left; drips run downward against it
Coverage
ink on about three quarters of the paper
Tone
four tonal steps, weighted to the middle greys
Layering
several translucent grey arc passes, then black; readable except lower left
Edges
crisp rims on outer arcs; broken in black ring; soft runs lower left
Feibai
present, in the black ring's descent down its right side
Open paper
round white disc inside the black ring, bottom centre-right
Chance marks
drips, runs and blots lower left; spots right; granular blotches in left arc
Frame
ink runs off top, right and bottom-right; top corners, left and bottom-left open

A spiral, laid down in greys and closed in black. Pale arcs fan from the upper left, swing over the top and down the right, darkening as they tighten, until a black ring wraps a disc of bare paper low and right of centre.

The ring is where the sheet lives. On its right-hand fall the brush runs dry and the hairs part, leaving long white streaks that keep the curve's speed. The half-sized bark paper grips those split hairs without flooding them. Above, the grey arcs overlap translucently and read cleanly from outside in. The left band has gone granular, and the paper holds that grain without mud.

Two things pull against it. The black arc's blunt end, at centre, is a squared slab, dense and sealed. It stands still where the rest of the spiral moves. And the bottom-left corner goes slack: runs and drops hang from the grey washes, and the pale ground beneath reads as leftover.

The spiral is sure and the white disc is truly shaped, so the sheet stands firmly. The slab and the dripping corner keep it from the front rank. It is solid work, clearly above the common run, with its faults in plain view.

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_281T_281, tone-stretchedT_281, classed by brightness
74%of the sheet carries ink
Black 15%Grey 75%Light 9% 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: 0.044 (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 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
Form3FLUENT2BUILT2BUILT2BUILT3FLUENT2.4
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering3ORDERED3ORDERED3ORDERED3ORDERED3ORDERED3.0
Composition2WORKING2WORKING2WORKING2WORKING2WORKING2.0
Material and surface1FLAWED1FLAWED1FLAWED1FLAWED1FLAWED1.0

READ 1, IN ITS OWN WORDS

“A fluent spiral of nested translucent arcs closing on a dry-brush black core, similar in type to R3. It is let down by a flat black interior and the hard-edged runs and drips at bottom-left.”

Form · FLUENT

All principal arcs follow the brush's circular travel; black core and grey bands are fluent. The squared terminal of the dark arc at centre is slightly blocky.

WEAKEST Squared blunt end of the black core arc

STRONGEST Dry-brush black arc sweeping round the right

Tonal depth · MODELLED

Grey bands and dry-brush right arc are modelled with streaks and grain. The black core near centre is flat inside; dark interior modulation 0.044 is below the threshold.

WEAKEST Flat dense black at the core arc's end

STRONGEST Streaked dry-brush greys in the right arc

Layering · ORDERED

Four tonal steps: pale outer arc, mid-grey arc, darker arc, black dry-brush core. The arcs overlap translucently, and their order reads clearly from the outside in.

WEAKEST Pale outermost arc barely separates from paper

STRONGEST Stepped translucent arcs nesting toward black core

Composition · WORKING

The spiral sweeps from top left down into the white void at bottom centre, so the empty paper is shaped. The bottom-left drips and pale runs are a weak, untidy corner.

WEAKEST Drip-strewn bottom-left zone

STRONGEST Spiral carrying eye into shaped white centre

Material and surface · FLAWED

The dry-brush grain is used well, but tide-edged runs and drops hang from the left grey arc in the bottom-left. They are clearly visible in the colour view. Paper creases cross the upper right.

WEAKEST Runs and drops below left grey wash

STRONGEST Dry-brush splitting in the black arc

FLAWS

6 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 6 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.

1 × OTHER“Blotchy mottled specks inside the pale upper-…”3 × OTHER“Paper creases and cracks crossing the grey ar…”2 × BLOOM“Spotty granulated blotches inside the left gr…”4 × OTHER“Stray ink spots right of the dark arc”5 × TIDE LINE, WATER STAIN · MAJOR“Runs and drips with hard edges hanging below …”2 × OTHER“Scattered blots and drops below the wash edge”WATER STAINBLOOMTIDE LINEOTHERMAJOR
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, 19% crisp, 63% soft or bloomed, 19% 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

2026.05.07, day 130 of the Crucible Year, one of 19 paintings from that date (14 shown). 16 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).

Made after a calmer fortnight than 16 of the 17 dates before it.
THE YEAR

T_281 among all 402

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

Every painting from 2026.05.07 · This date in the year

Materials

Paper
Red Star Mo She Special Effect Xieyi Edition, half-raw (June 2025 batch), China Xuan Paper Co., Ltd., made 2025.06.07
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 334 days before this painting.
When each paper was in use