Crucible Year Peter Yuill
Wide ink painting: dense black mass at left, grey hand-like shape and pale rectangles at right, joined by a low dry-brush arc, drips above. T_210, tone-stretched: what the model was shownT_210: every pixel as the measuring code classes it
97 × 180 cm · the whole sheet, uncropped

T_210

The engine's reading

A black mass at the left and a grey fan of strokes at the right, joined by one low dry-brush sweep beneath a drip-spotted wedge of bare paper.

Record
Date
2026.04.12
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_210Availability, price or a studio visit. Peter replies himself; asking commits you to nothing.

Below the grey hand at the right, a ring has been drawn and left unclosed. In the country I grew up in, that is how you summon something small: leave the circle open a finger's width, so whatever comes can also go. The hand above it looks like it knows the rule and is pretending not to. Up top the drops have already landed, a rain of dark coins from a treasury that went broke halfway through the spell. I gathered them for the tax collector. He wanted more. The ring stays open. Something the size of a wren steps through, looks at the cloud in the middle, and steps back out, shaking ink from its feet.

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 mass at left, grey fan and slabs at right, joined by a sweeping arc
Movement
left to right along the low arc; drips scatter across the top against it
Coverage
ink on about four fifths of the paper
Tone
six tonal steps, weighted to the middle greys
Layering
pale washes, grey slabs, black strokes; readable at right, clouded at centre
Edges
crisp tide lines on top-right slabs, broken bristle edges at left and arc, soft at centre
Feibai
present, in the long sweeping arc from lower centre towards the right fan
Open paper
pale wedge at top centre, broad open ground at lower right
Chance marks
drips and blots across upper paper, ring-like grey loop under right fan, bloom beside centre dark
Frame
ink runs off left edge and top corners; top centre and lower right stay open

A black mass holds the left end of the paper and a grey fan of strokes holds the right. Between them one long dry-brush sweep swings low across the sheet, left to right. Above it a pale wedge of bare paper opens at the top centre, spotted with drips.

The sweep is where the sheet comes alive. The bristles parted at speed and left streaks of white inside the stroke, and the half-sized bark paper held the dry hairs at its surface, so the streaks stay clean and directional. The left mass works the same way: inside its black, grain and streaks stay open, and the dark has a body you can see into.

The centre gives that back. The black slab there is flat inside, and its left side melts into a cloudy, milky grey where wet washes ran together and the order of passes is lost. Drip rings crowd the greys around it.

So the ends and the arc between them are well made, and the middle, where everything meets, never settles. It stands among the archive's usual sheets, lifted by its sweep and held down by its centre.

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_210T_210, tone-stretchedT_210, classed by brightness
78%of the sheet carries ink
Black 37%Grey 51%Light 12% SHARE OF THE INK, NOT OF THE SHEET
TONAL STEPS

6 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: 0.053 (under 0.045 reads as flat).

0.300.75123456 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 gestural sheet close to R2. The dark masses on both sides are joined by a dry-brush arc. The centre is cloudy and crowded, and drips and a ring-like arc mar the surface. Most ladders sit at the ordinary rung.”

Form · BUILT

The left black mass and the right fan stroke are nameable shapes with clear brush travel. The centre dark mass is ragged and partly dissolved, and the top-right grey slab is stiff.

WEAKEST centre dark mass, blotchy with a dissolved left edge

STRONGEST sweeping dry-brush arc linking left mass to right

Tonal depth · MODELLED

The left mass shows dry-brush streaks and creases in the stretched view. The right fan has stepped greys. The centre black is mostly flat. Modulation is 0.053, barely above the flat line.

WEAKEST centre dark mass, flatter inside

STRONGEST left black mass, with grain and streaks inside

Layering · LEGIBLE

The grey slabs at top right and top centre sit under the dark strokes and stay readable. Near the centre the overlaps go cloudy and the order of passes is harder to read.

WEAKEST centre, where grey wash and black merge cloudily

STRONGEST top-right translucent slabs under the dark fan

Composition · WORKING

The masses at left and right are joined by a sweeping arc, and the pale top-centre paper is shaped. With 78% coverage the sheet feels crowded, and the centre is muddled.

WEAKEST centre area, crowded and cloudy

STRONGEST sweeping arc carrying the eye left to right

Material and surface · FLAWED

Scattered round drips and blots at top centre, a ring-like grey arc at bottom right, and a cloudy wash beside the centre dark are all visible in the colour view.

WEAKEST drips and rings on the pale paper

STRONGEST dry-brush grain in the left mass

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, 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“milky pale patches in the upper-left grey wash”6 × WATER STAIN, OTHER, TIDE LINE, RING“round drips and blots across the upper paper”1 × TIDE LINE“hard edges on the grey slab at top right”1 × WATER STAIN“milky grey patches inside left-centre washes”5 × BLOOM, WATER STAIN · MAJOR“cloudy grey wash on the left side of the cent…”5 × RING, TIDE LINE“curved grey arc below the right fan”WATER STAINBLOOMRINGTIDE LINEOTHERMAJOR
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 1 principal ink mass traced (cyan), 9 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 17 edge segments, 41% crisp, 24% soft or bloomed, 35% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4H5H6H7H8H9

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

2026.04.12, day 105 of the Crucible Year, one of 13 paintings from that date (4 shown). 45 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_210 among all 402

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

Every painting from 2026.04.12 · 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 309 days before this painting.
When each paper was in use