Crucible Year Peter Yuill
Wide ink painting: a black slab at top right, a dark curved sweep along the bottom, a broken pale band between, grey washes left. T_166, tone-stretched: what the model was shownT_166: every pixel as the measuring code classes it
97 × 180 cm · the whole sheet, uncropped

T_166

The engine's reading

A black slab pressed down from the top edge, a dark crescent swept in beneath it, a flaking pale band between, grey washes crossing on the left.

Record
Date
2026.04.03
Dimensions
97 × 180 cm
Paper
Tanxi Thickened Grade A Half-Raw 6-Foot
Ink
Kuretake Shogei Kiwami, Yi De Ge Zhonghua, Boku-Undo Bokkou
Enquire about T_166Availability, price or a studio visit. Peter replies himself; asking commits you to nothing.

The creases read like a tablecloth's, quartered and then quartered again, kept in the drawer with the good spoons. The black at the top is the wine that went over when the argument started. The long dark curve beneath it is an arm across the table, catching the bottle before it rolls off. The flakes in between are crumbs, a whole evening of bread pushed into the weave. I would wash it. The black would not come out. You fold it anyway, stain turned inward, because Sunday is coming and there will be people, and you spread it with the creases still standing up like small roofs and set the plates down on top.

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
top-right black slab, lower dark crescent, left grey slabs, broken band between
Movement
rightward sweep along the bottom; left grey verticals stand against it
Coverage
ink on about nine tenths of the paper
Tone
five tonal steps, weighted to the middle greys
Layering
translucent grey passes under dark passes; readable at the left overlaps
Edges
crisp straight underside of the slab; bristled fringe top right; soft cloudy greys
Feibai
present in the dark rising arc left of centre, toward its top
Open paper
pale wedge in the top-left corner, opening down to the left grey
Chance marks
fold creases through both darks; blots beside the light band; spatter lower left
Frame
ink runs off left, top right and bottom left; top left and lower right open

Two darks pinch the right half of the paper. A black slab presses down from the top edge, a long crescent swings in beneath it from the left, and between them a pale band breaks into flakes. Broad grey washes cross each other over the whole left side.

The crescent is where the sheet comes alive. It follows the brush the whole way, its walls stay firm, and it thins to a clean point at the right. The half-raw paper lets grain and banding show inside it, so the dark keeps grading as it travels. The flaking band above is real texture, ink broken over the paper's surface, and on the left the grey passes stay translucent where they cross.

The slab costs most. Its underside is ruled straight and its inside is close to flat, so it covers what lies beneath it rather than building on it. The left grey field is heavy and points nowhere. Creases run through both darks and stray blots dot the light band; the sheet absorbs them.

That leaves a sheet from the middle of the run: one fine sweep and a live patch of broken texture, set among blocks that mostly fill space. It holds together. It does not rise.

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_166T_166, tone-stretchedT_166, classed by brightness
86%of the sheet carries ink
Black 30%Grey 60%Light 9% 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: 0.058 (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, 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 working sheet: a strong bottom sweep and a textured central band, but a slab-like top block, a cloudy left grey field, and creases and blots on the surface keep it at an ordinary level.”

Form · BUILT

Bottom stroke follows brush travel to a tapered tip; top-right block is a bulky rectangle; left grey washes are broad, loosely edged slabs.

WEAKEST Top-right black block: blunt slab with stiff edges

STRONGEST Bottom dark sweep tapering to a point at right

Tonal depth · MODELLED

Five tonal steps; dark interiors show grain and banding (modulation 0.058); top block has streaking; left grey field reads as one flat cloudy tone.

WEAKEST Left grey washes, cloudy and near-uniform

STRONGEST Bottom sweep graded from black to grey

Layering · LEGIBLE

Grey vertical and horizontal washes overlap translucently, black passes sit on top readably; left overlaps lose clarity and order.

WEAKEST Left overlapping greys merge into cloudy field

STRONGEST Black block laid legibly over pale grey wash

Composition · WORKING

Two dark masses at right converge around a lit mottled band, giving direction; left grey field is heavy and static, upper-left paper leftover.

WEAKEST Left half: large undirected grey expanse

STRONGEST Top block and bottom sweep bracketing central light

Material and surface · FLAWED

Fold creases cut through top black block and bottom sweep; stray blots centre; speckled spots and cloudy wash in left grey field, visible in colour view.

WEAKEST Crease lines and blots across principal masses

STRONGEST Reticulated dry-brush texture in centre-right band

FLAWS

7 distinct places, 2 major.

Each read must name every flaw and where it is, in a ninth of the sheet. Here the reads named flaws in 7 distinct places, 20 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.

4 × OTHER · MAJOR“fold creases crossing top black block”4 × BLOOM, WATER STAIN“cloudy speckled grey wash, left field”5 × WATER STAIN, OTHER“stray blots and drops beside central light ar…”3 × OTHER, BLOOM · MAJOR“mottled flaking ink patch above lower dark st…”1 × OTHER“spatter specks in the lower-left grey”2 × OTHER“creases through bottom dark sweep”WHOLE SHEET · 1 × OTHERWATER STAINBLOOMOTHERMAJOR
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 14 edge segments, 43% crisp, 57% 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

2026.04.03, day 96 of the Crucible Year, one of 13 paintings from that date (3 shown). 33 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: P1 Warm-up (working title).

THE YEAR

T_166 among all 402

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

Every painting from 2026.04.03 · This date in the year

Materials

Paper
Tanxi Thickened Grade A Half-Raw 6-Foot, Anhui Jingxian Tanxi Xuan Paper Art Products Co., Ltd., made 2024
Ink MB1
Kuretake Shogei Kiwami, Kuretake
Ink MB2
Yi De Ge Zhonghua, Yi De Ge (Beijing)
Ink MB3
Boku-Undo Bokkou, Boku-Undo
When each paper was in use