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A Guide to Chess Improvement loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsnetreader034viewer202205072155cf9999550346d0339e3668html5thumbnails379jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=380Page 380button div class=ts-imageimg data-url=heisman-dan-a-guide-to-chess-improvementhtmlpage=380 data-page=380 class=ts-thumb lazyload alt=Page 380: Heisman Dan - A Guide to Chess Improvement loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsnetreader034viewer202205072155cf9999550346d0339e3668html5thumbnails380jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=381Page 381button div class=ts-imageimg data-url=heisman-dan-a-guide-to-chess-improvementhtmlpage=381 data-page=381 class=ts-thumb lazyload alt=Page 381: Heisman Dan - 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