--- title: "T_390, sumi ink on paper | Crucible Year" url: https://peteryuill.art/works/T_390 description: "T_390 by Peter Yuill: Square-ended brush passes in graded greys and blacks wheel out from a small spiral, one wing rising from the left, the other plunging into the lower right. Sumi ink on Huiyun Tianxuan Ge \"Dot Ink Becomes Gold\" Master Special, semi-cooked (self-sized, aged), 97 × 180 cm, 2026.10.16. Crucible Year." source: generated from the Crucible Year master database --- ![Stepped black and grey brushstrokes spiral from a small centre across wide white paper, darkest at right, with white below centre and in top corners.] ![T_390, tone-stretched: what the model was shown] ![T_390: every pixel as the measuring code classes it] 97 × 180 cm · the whole sheet, uncropped # T_390 The engine's reading Square-ended brush passes in graded greys and blacks wheel out from a small spiral, one wing rising from the left, the other plunging into the lower right. Record - **Date:** 2026.10.16 - **Dimensions:** 97 × 180 cm - **Paper:** [Huiyun Tianxuan Ge "Dot Ink Becomes Gold" Master Special, semi-cooked (self-sized, aged)](https://peteryuill.art/papers/S13) - **Ink:** [Yi De Ge Yun Tou Yan](https://peteryuill.art/inks/MB6), [Boku-Undo Gentoku Super Concentrated](https://peteryuill.art/inks/MB8), [Yi De Ge Pine Soot Ink](https://peteryuill.art/inks/MB9), [Shisan Yue Calligraphy and Painting Ink](https://peteryuill.art/inks/MB10) [Enquire about T_390](https://peteryuill.art/enquiries?work=T_390) Availability, price or a studio visit. Peter replies himself; asking commits you to nothing. I know that little spiral. It is the plughole at two in the morning, after the guests have gone, when one of you washes and the other dries and the water goes round the way water always goes round in this house. The left side is the drying: plate on plate, each a shade paler, stacked in an order you could recite in your sleep. The right side is the roasting pan left to soak, black and patient, which will be dealt with tomorrow, a promise you both believe. I like that it is heavy. A kitchen should keep one thing unfinished. The tap lets go a single drop. Two cups upturned on the rack, rims touching. Neon [Who Neon is](https://peteryuill.art/neon) Detail at full resolution, cut by code where the brushwork is finest · select to enlarge [Details](https://peteryuill.art/works/T_390#details)[The reading](https://peteryuill.art/works/T_390#reading)[How it was read](https://peteryuill.art/works/T_390#read)[Date](https://peteryuill.art/works/T_390#date)[Materials](https://peteryuill.art/works/T_390#materials)[Related](https://peteryuill.art/works/T_390#related) 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:** two stepped wings joined at a tight spiral just right of centre - **Movement:** rotation from left edge, over the top, down into lower right - **Coverage:** ink on about four fifths of the paper - **Tone:** four tonal steps, weighted dark - **Layering:** many translucent stamped passes, readable on left wing and upper right - **Edges:** crisp square-cut ends on outer steps, dry-brush tails on arcs, merged lower right - **Feibai:** none - **Open paper:** rounded white bay below centre opening to bottom edge; top corners - **Chance marks:** milky water stain in pale greys near left edge, middle height - **Frame:** ink runs off left, right and lower right; top and bottom centre open A wheel of ink turns across the width of the paper. From a tight spiral just right of centre, two wings fan out: one climbs from the left edge and arcs over the top, the other drops into the lower right corner. Each wing is built from square-ended passes laid in sequence, so the turn advances in steps, like a fan opening. The left wing is the finest thing here. Its passes run from pale grey to near black. The paper was sized before painting, so each translucent layer rests on the last instead of sinking into it, and the order of making stays legible. Dry-brush tails at the outer arcs pull in the direction of travel. The lower right is heavier going. Late dark passes seal over earlier ones into a black mass close to flat inside, and the steps stop reading. A milky stain in the far left greys is small, and the wing absorbs it. The weight costs the sheet some air, never its grip. The spiral holds, the white bay below it is shaped by both wings, and the rotation reads from edge to edge. A strong sheet, with one corner overfed. Measured ## How it was read Read by the Visual Analysis Engine, version 23.8, on 2026.10.16: 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](https://peteryuill.art/method). 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_390] ![T_390, tone-stretched] ![T_390, classed by brightness] 80% of the sheet carries ink 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: 0.050 (under 0.045 reads as flat). FIVE READS ## Five reads, agreeing on 3 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 1 READ 2 READ 3 READ 4 READ 5 MEAN Form 3 FLUENT 3 FLUENT 2 BUILT 3 FLUENT 2 BUILT 2.6 Tonal depth 2 MODELLED 2 MODELLED 2 MODELLED 2 MODELLED 2 MODELLED 2.0 Layering 3 ORDERED 3 ORDERED 3 ORDERED 3 ORDERED 3 ORDERED 3.0 Composition 2 WORKING 2 WORKING 3 COMMANDING 3 COMMANDING 2 WORKING 2.4 Material and surface 2 SOUND 2 SOUND 2 SOUND 2 SOUND 2 SOUND 2.0 ### READ 1, IN ITS OWN WORDS “This sheet uses the same radial stepped-arc method as R3, with fluent strokes and legible translucent layering. It is denser and more crowded, and the right black mass is flatter inside, so it sits below R3.” Form · FLUENT Each stamped arc stroke follows the brush's rotation about the centre vortex; edges are crisp with dry-brush tails; the right lower mass thickens but its strokes still read. WEAKEST Dense right mass where stroke ends merge into bulk STRONGEST Stepped arc strokes spiralling out from central vortex Tonal depth · MODELLED Left wing shows graded translucent steps and streaked grain; right lower mass reads mostly solid black; interior modulation 0.050 is only just above flat. WEAKEST Right lower black mass largely uniform inside STRONGEST Left wing's stepped greys from pale to black Layering · ORDERED Many translucent passes are stacked in rotational order; overlaps on the left and upper right stay legible and build depth; in the right black mass they compact together. WEAKEST Right mass overlaps compacted, order harder to read STRONGEST Translucent overlapping arcs along left wing edges Composition · WORKING The two wings swirl around an off-centre vortex and give strong movement; the empty lower centre is shaped, but 80% coverage and a heavy right corner crowd the sheet. WEAKEST Heavy right-bottom mass crowds the frame edge STRONGEST Vortex centre pulling both wings into rotation Material and surface · SOUND Ink is controlled and dry-brush edges are used well; small milky, blotchy patches appear in the left mid greys and are minor; no tide lines at the principal masses. WEAKEST Pale cloudy patches in left-edge greys STRONGEST Dry-brush tails on the outer arc edges FLAWS ## 2 distinct places, 0 major. Each read must name every flaw and where it is, in a ninth of the sheet. Here the reads named flaws in 2 distinct places, 6 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. 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](https://peteryuill.art/archive/works/T_390). ## Date 2026.10.16, day 292 of the Crucible Year, one of 12 paintings from that date (9 shown). 0 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: [P4 S14](https://peteryuill.art/phases/P4) (working title). The first paintings registered in 21 days. THE YEAR ## T_390 among all 402 Every painting of the year by date; this one is outlined. [Every painting from 2026.10.16](https://peteryuill.art/days/2026-10-16) · [This date in the year](https://peteryuill.art/year?follow=2026-10-16) ## Materials - **Paper:** [Huiyun Tianxuan Ge "Dot Ink Becomes Gold" Master Special, semi-cooked (self-sized, aged)](https://peteryuill.art/papers/S13), Anhui Jingxian Huiyun Tianxuan Ge Xuan Paper Art Products Co., Ltd. (安徽泾县徽韵天宣阁宣纸艺术品有限公司), made 2012.10 - **Ink MB6:** [Yi De Ge Yun Tou Yan](https://peteryuill.art/inks/MB6), Yi De Ge (Beijing) - **Ink MB8:** [Boku-Undo Gentoku Super Concentrated](https://peteryuill.art/inks/MB8), Boku-Undo - **Ink MB9:** [Yi De Ge Pine Soot Ink](https://peteryuill.art/inks/MB9), Yi De Ge (Beijing) - **Ink MB10:** [Shisan Yue Calligraphy and Painting Ink](https://peteryuill.art/inks/MB10), Shisan Yue (Thirteenth Month) The sheet of paper was made 5128 days before this painting. When each paper was in use [S1](https://peteryuill.art/papers/S1)[S2](https://peteryuill.art/papers/S2)[S3](https://peteryuill.art/papers/S3)[S4](https://peteryuill.art/papers/S4)[S5](https://peteryuill.art/papers/S5)[S6](https://peteryuill.art/papers/S6)[S7](https://peteryuill.art/papers/S7)[S8](https://peteryuill.art/papers/S8)[S9](https://peteryuill.art/papers/S9)[S10](https://peteryuill.art/papers/S10)[S11](https://peteryuill.art/papers/S11)[S12](https://peteryuill.art/papers/S12)[S13](https://peteryuill.art/papers/S13)[S14](https://peteryuill.art/papers/S14) Jan Feb Mar Apr May Jun Jul Aug Sep Oct ## Related From the same date · 8 Same paper and inks, other dates · 4 [Pattern V23 material and surface rung rose from 2026-05-24 on (rank-biserial +0.78, n 259)](https://peteryuill.art/oracle)[Pattern The floor of V23 Form rung raised in the later half of the practice (+2.30 SD, n 259)](https://peteryuill.art/oracle)[Pattern 45% of the variation in V23 Composition rung lies between batches (29 batches, n 259); with the month held constant 26%](https://peteryuill.art/oracle) [Previous T_388](https://peteryuill.art/works/T_388) [Back to all works](https://peteryuill.art/works) [Next T_391](https://peteryuill.art/works/T_391) ## Where next [T_386 same date, with 7 others](https://peteryuill.art/works/T_386)[T_398 same paper and inks, 2026.10.25](https://peteryuill.art/works/T_398)[2026.10.16 12 paintings on this date](https://peteryuill.art/days/2026-10-16)[Paper S13 every work on it](https://peteryuill.art/papers/S13)