const exportPDF = async () => const element = pdfRef.current; if (!element) return; const canvas = await html2canvas(element); const imgData = canvas.toDataURL('image/png'); const pdf = new jsPDF('p', 'mm', 'a4'); const imgWidth = 190; const imgHeight = (canvas.height * imgWidth) / canvas.width; pdf.addImage(imgData, 'PNG', 10, 10, imgWidth, imgHeight); pdf.save('rossolimo-22-lines.pdf'); ;

I understand you're looking for a feature related to the (ECO code B30-B31), specifically referencing a PDF that covers 22 lines or variations — or perhaps page 22 of a specific PDF.

const PDFDocument = require('pdfkit'); const fs = require('fs'); const variations = require('./rossolimo22.json'); function generateRossolimoPDF() const doc = new PDFDocument( margin: 50 ); doc.pipe(fs.createWriteStream('rossolimo-22.pdf')); doc.fontSize(18).text('Sicilian Defense – Rossolimo Variation', align: 'center' ); doc.moveDown(); doc.fontSize(12).text('22 Key Variations', align: 'center' ); doc.moveDown(2); variations.forEach((v, i) => doc.fontSize(11).text( $i+1. $v.name , underline: true ); doc.fontSize(10).text( Moves: $v.moves ); doc.text( Note: $v.note ); doc.moveDown(); ); doc.end();

"id": 1, "name": "Classical 3...g6", "moves": "1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.Bxc6 dxc6 5.O-O Bg7 6.c3", "note": "White exchanges bishop to double black's pawns and control d4."

return ( <div> <button onClick=exportPDF>📥 Download PDF (22 lines)</button> <div ref=pdfRef className="pdf-content"> <h1>Sicilian Defense – Rossolimo Variation</h1> <h2>22 Essential Variations</h2> variations22.map((v, idx) => ( <div key=v.id> <h3>idx+1. v.name</h3> <p><strong>Moves:</strong> v.moves</p> <p><strong>Note:</strong> v.note</p> </div> )) </div> </div> );

| # | Variation Name | Moves (up to move 6–7) | |---|----------------|--------------------------| | 1 | 3...g6 4.O-O Bg7 | 1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 Nf6 6.Re1 O-O | | 2 | 3...g6 4.Bxc6 | 1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.Bxc6 dxc6 5.d3 Bg7 6.h3 | | 3 | 3...e6 4.O-O | 1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.O-O Nge7 5.c3 a6 6.Ba4 | | 4 | 3...e6 4.Bxc6 | 1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.Bxc6 bxc6 5.d4 cxd4 6.Qxd4 | | 5 | 3...d6 | 1.e4 c5 2.Nf3 Nc6 3.Bb5 d6 4.O-O Bd7 5.c3 Nf6 6.Re1 | (Continue to 22 entries covering all critical lines from B30–B31) ✅ Deliverable for "Feature Development" If you are a developer, you can implement the above as a standalone module inside a chess training app, website, or even a Discord bot that generates the PDF on command.