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A tempo, en blitz j aurai fait l'erreur d'activer mon Roi, et j'aurais surement dû accorder le demi-point aux Noirs... 13sk2sr15sP7sK23s Auriez-vous fait la même erreur ? (La solution est en","author":{"@type":"Person","name":"admin","url":"https:\/\/blog.site2wouf.fr\/author\/admin","image":{"@type":"ImageObject","url":"https:\/\/secure.gravatar.com\/avatar\/91a3e63d28c1e0d25846ec869ecfe5d6475e9f442c23d059d8ce1434dd0aaee2?s=96&d=mm&r=g","height":96,"width":96}},"video":[],"audio":[],"commentCount":"1","comment":[{"@type":"Comment","dateCreated":"2026-04-05 19:04:38","description":"1. Tb6 est la seule solution :\r\n[diag arrows=a6b6b]13sk3sr14sP7sK23s[\/diag]\r\n\r\nIl pourrait suivre :\r\n1. ... Ra2 2. Re6 a3 3. Rd5 Ra1 4. Rc4 a2 \r\n\r\n[diag]17sr16sk13sP7sK7s[\/diag]\r\n\r\n4. Rb3 Rb1 5 Th6\r\n\r\n[diag]23sr17sk6sP8sK6s[\/diag]\r\n\r\nLa promotion en Dame signe la feuille de match avec le mat en h1. Les noirs peuvent gigoter deux trois coups avec un cavalier, mais c'est fini...","author":{"@type":"Person","name":"admin","url":""}}]},{"@context":"https:\/\/schema.org\/","@type":"BlogPosting","mainEntityOfPage":{"@type":"WebPage","@id":"https:\/\/blog.site2wouf.fr\/2026\/04\/defi-mathematiques-et-anglais-retro-math.html"},"url":"https:\/\/blog.site2wouf.fr\/2026\/04\/defi-mathematiques-et-anglais-retro-math.html","headline":"Défi Mathématiques et anglais | rétro Math","datePublished":"2026-04-05T18:20:45+02:00","dateModified":"2026-04-05T18:20:46+02:00","publisher":{"@type":"Organization","@id":"https:\/\/blog.site2wouf.fr\/#organization","name":"wouf&#039;s blog","logo":{"@type":"ImageObject","url":"https:\/\/blog.site2wouf.fr\/wp-content\/uploads\/2019\/05\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","url":"https:\/\/blog.site2wouf.fr\/wp-content\/uploads\/2026\/04\/classe-anglais-style-image-retro.jpg","width":1200,"height":630},"articleSection":"Mathématiques","keywords":"Jeux &amp; Stratégie, Mathématiques, Moyenne, rétro, statistiques","description":"Dans cette classe de 35 élèves, les filles ont eu une moyenne de 12 à la dernière composition de thème anglais, et les garçons de 9,5 seulement. La moyenne générale était de 10,5. 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Ce2 qui menace mat en g3. 13sPsKsPq4s2P2sp2sPspBsb5sb3spsp4sNspk4sQ3s Mais c'est une erreur ! Punissez les ! La partie sur Lichess","author":{"@type":"Person","name":"admin","url":"https:\/\/blog.site2wouf.fr\/author\/admin","image":{"@type":"ImageObject","url":"https:\/\/secure.gravatar.com\/avatar\/91a3e63d28c1e0d25846ec869ecfe5d6475e9f442c23d059d8ce1434dd0aaee2?s=96&d=mm&r=g","height":96,"width":96}},"video":[],"audio":[],"commentCount":"0"}]}</script>

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		<div class="entries" data-archive="default" data-layout="enhanced-grid" data-cards="boxed"><article class="entry-card card-content post-19482 post type-post status-publish format-standard has-post-thumbnail hentry category-echecs tag-tag-echecs tag-etude-2 tag-finale tag-tour" data-reveal="bottom:no"><ul class="entry-meta" data-type="simple:slash" data-id="meta_1" ><li class="meta-categories" data-type="simple"><a href="https://blog.site2wouf.fr/category/echecs" rel="tag" class="ct-term-24">Echecs</a></li></ul><h2 class="entry-title"><a href="https://blog.site2wouf.fr/2026/04/magnifique-etude-de-saavedra-les-blancs-jouent-et-gagnent.html" rel="bookmark">Magnifique étude de Saavedra. Les Blancs jouent et gagnent.</a></h2><a class="ct-media-container" href="https://blog.site2wouf.fr/2026/04/magnifique-etude-de-saavedra-les-blancs-jouent-et-gagnent.html" aria-label="Magnifique étude de Saavedra. Les Blancs jouent et gagnent."><img width="1200" height="630" src="https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-5.png" class="attachment-1536x1536 size-1536x1536 wp-post-image" alt="" loading="lazy" decoding="async" srcset="https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-5.png 1200w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-5-300x158.png 300w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-5-1024x538.png 1024w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-5-768x403.png 768w" sizes="auto, (max-width: 1200px) 100vw, 1200px" itemprop="image" style="aspect-ratio: 16/9;" /></a><div class="entry-excerpt"><p>Je pense que c&rsquo;est l&rsquo;une des études qui m&rsquo;a le plus convaincu de la magie des échecs. En premier lieu, on pense que c&rsquo;est facile :1 c7 et la tour noire ne peut couvrir c8&#8230; Oui mais&#8230; Sur 1. &#8230;…</p>
</div><a class="entry-button wp-element-button ct-button" href="https://blog.site2wouf.fr/2026/04/magnifique-etude-de-saavedra-les-blancs-jouent-et-gagnent.html">Lire la suite<span class="screen-reader-text">Magnifique étude de Saavedra. Les Blancs jouent et gagnent.</span></a></article><article class="entry-card card-content post-19495 post type-post status-publish format-standard has-post-thumbnail hentry category-mathematiques-blog tag-calculs tag-equations tag-jeux-strategie tag-tag-mathematiques tag-retro" data-reveal="bottom:no"><ul class="entry-meta" data-type="simple:slash" data-id="meta_1" ><li class="meta-categories" data-type="simple"><a href="https://blog.site2wouf.fr/category/mathematiques-blog" rel="tag" class="ct-term-22">Mathématiques</a></li></ul><h2 class="entry-title"><a href="https://blog.site2wouf.fr/2026/04/retro-math-trouver-deux-nombres.html" rel="bookmark">Rétro Math : Trouver deux nombres</a></h2><a class="ct-media-container" href="https://blog.site2wouf.fr/2026/04/retro-math-trouver-deux-nombres.html" aria-label="Rétro Math : Trouver deux nombres"><img width="1200" height="630" src="https://blog.site2wouf.fr/wp-content/uploads/2026/04/Les-deux-nombres.png" class="attachment-1536x1536 size-1536x1536 wp-post-image" alt="" loading="lazy" decoding="async" srcset="https://blog.site2wouf.fr/wp-content/uploads/2026/04/Les-deux-nombres.png 1200w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/Les-deux-nombres-300x158.png 300w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/Les-deux-nombres-1024x538.png 1024w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/Les-deux-nombres-768x403.png 768w" sizes="auto, (max-width: 1200px) 100vw, 1200px" itemprop="image" style="aspect-ratio: 16/9;" /></a><div class="entry-excerpt"><p>Avec deux nombres entiers naturels non nuls, on effectue les quatre opérations suivantes : L&rsquo;addition de ces différents résultats donne 243. Quels sont ces deux nombres ?</p>
</div><a class="entry-button wp-element-button ct-button" href="https://blog.site2wouf.fr/2026/04/retro-math-trouver-deux-nombres.html">Lire la suite<span class="screen-reader-text">Rétro Math : Trouver deux nombres</span></a></article><article class="entry-card card-content post-19479 post type-post status-publish format-standard has-post-thumbnail hentry category-echecs tag-tag-echecs tag-etude-2 tag-finale tag-rinck tag-tour" data-reveal="bottom:no"><ul class="entry-meta" data-type="simple:slash" data-id="meta_1" ><li class="meta-categories" data-type="simple"><a href="https://blog.site2wouf.fr/category/echecs" rel="tag" class="ct-term-24">Echecs</a></li></ul><h2 class="entry-title"><a href="https://blog.site2wouf.fr/2026/04/etude-de-rinck-les-blancs-jouent-et-gagnent.html" rel="bookmark">Étude de Rinck : Les Blancs jouent et gagnent</a></h2><a class="ct-media-container" href="https://blog.site2wouf.fr/2026/04/etude-de-rinck-les-blancs-jouent-et-gagnent.html" aria-label="Étude de Rinck : Les Blancs jouent et gagnent"><img width="1200" height="630" src="https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-4.png" class="attachment-1536x1536 size-1536x1536 wp-post-image" alt="" loading="lazy" decoding="async" srcset="https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-4.png 1200w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-4-300x158.png 300w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-4-1024x538.png 1024w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-4-768x403.png 768w" sizes="auto, (max-width: 1200px) 100vw, 1200px" itemprop="image" style="aspect-ratio: 16/9;" /></a><div class="entry-excerpt"><p>Comme souvent dans une étude, un seul coup mène à la victoire. Comme souvent dans une étude l&rsquo;évidence n&rsquo;est pas la solution. Ainsi 1.Th3+ Ra4 2. Te3 Tb8 ne mène à rien&#8230;. Avez-vous l&rsquo;idée ? (Solution en commentaire)</p>
</div><a class="entry-button wp-element-button ct-button" href="https://blog.site2wouf.fr/2026/04/etude-de-rinck-les-blancs-jouent-et-gagnent.html">Lire la suite<span class="screen-reader-text">Étude de Rinck : Les Blancs jouent et gagnent</span></a></article><article class="entry-card card-content post-19490 post type-post status-publish format-standard has-post-thumbnail hentry category-mathematiques-blog tag-calcul tag-defi tag-jeux-strategie tag-problemes tag-retro tag-temps" data-reveal="bottom:no"><ul class="entry-meta" data-type="simple:slash" data-id="meta_1" ><li class="meta-categories" data-type="simple"><a href="https://blog.site2wouf.fr/category/mathematiques-blog" rel="tag" class="ct-term-22">Mathématiques</a></li></ul><h2 class="entry-title"><a href="https://blog.site2wouf.fr/2026/04/retro-math-les-deux-cyclistes.html" rel="bookmark">Rétro Math : LES DEUX CYCLISTES</a></h2><a class="ct-media-container" href="https://blog.site2wouf.fr/2026/04/retro-math-les-deux-cyclistes.html" aria-label="Rétro Math : LES DEUX CYCLISTES"><img width="1536" height="860" src="https://blog.site2wouf.fr/wp-content/uploads/2026/04/retre_math_velos-1536x860.jpg" class="attachment-1536x1536 size-1536x1536 wp-post-image" alt="" loading="lazy" decoding="async" srcset="https://blog.site2wouf.fr/wp-content/uploads/2026/04/retre_math_velos-1536x860.jpg 1536w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/retre_math_velos-300x168.jpg 300w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/retre_math_velos-1024x573.jpg 1024w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/retre_math_velos-768x430.jpg 768w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/retre_math_velos.jpg 1600w" sizes="auto, (max-width: 1536px) 100vw, 1536px" itemprop="image" style="aspect-ratio: 16/9;" /></a><div class="entry-excerpt"><p>Le facteur du village de Limaçon situé au sommet du col du même nom, va tous les matins à vélo chercher le courrier à Bigorneau niché au fond de la vallée. Au même moment, son fils qui habite Bigorneau, prend…</p>
</div><a class="entry-button wp-element-button ct-button" href="https://blog.site2wouf.fr/2026/04/retro-math-les-deux-cyclistes.html">Lire la suite<span class="screen-reader-text">Rétro Math : LES DEUX CYCLISTES</span></a></article><article class="entry-card card-content post-19474 post type-post status-publish format-standard has-post-thumbnail hentry category-echecs tag-tag-echecs tag-finale tag-isenegger tag-tour" data-reveal="bottom:no"><ul class="entry-meta" data-type="simple:slash" data-id="meta_1" ><li class="meta-categories" data-type="simple"><a href="https://blog.site2wouf.fr/category/echecs" rel="tag" class="ct-term-24">Echecs</a></li></ul><h2 class="entry-title"><a href="https://blog.site2wouf.fr/2026/04/etude-disenegger-les-blancs-jouent-et-gagnent.html" rel="bookmark">Étude d&rsquo;Isenegger : Les Blancs jouent et gagnent</a></h2><a class="ct-media-container" href="https://blog.site2wouf.fr/2026/04/etude-disenegger-les-blancs-jouent-et-gagnent.html" aria-label="Étude d&rsquo;Isenegger : Les Blancs jouent et gagnent"><img width="1200" height="630" src="https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-3.png" class="attachment-1536x1536 size-1536x1536 wp-post-image" alt="" loading="lazy" decoding="async" srcset="https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-3.png 1200w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-3-300x158.png 300w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-3-1024x538.png 1024w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-3-768x403.png 768w" sizes="auto, (max-width: 1200px) 100vw, 1200px" itemprop="image" style="aspect-ratio: 16/9;" /></a><div class="entry-excerpt"><p>Dans cette étude de Samuel Isenegger, les blancs ne dispose que d&rsquo;un et un seul coup gagnant ! A tempo, en blitz j aurai fait l&rsquo;erreur d&rsquo;activer mon Roi, et j&rsquo;aurais surement dû accorder le demi-point aux Noirs&#8230; Auriez-vous fait…</p>
</div><a class="entry-button wp-element-button ct-button" href="https://blog.site2wouf.fr/2026/04/etude-disenegger-les-blancs-jouent-et-gagnent.html">Lire la suite<span class="screen-reader-text">Étude d&rsquo;Isenegger : Les Blancs jouent et gagnent</span></a></article><article class="entry-card card-content post-19471 post type-post status-publish format-standard has-post-thumbnail hentry category-mathematiques-blog tag-jeux-strategie tag-tag-mathematiques tag-moyenne tag-retro tag-statistiques" data-reveal="bottom:no"><ul class="entry-meta" data-type="simple:slash" data-id="meta_1" ><li class="meta-categories" data-type="simple"><a href="https://blog.site2wouf.fr/category/mathematiques-blog" rel="tag" class="ct-term-22">Mathématiques</a></li></ul><h2 class="entry-title"><a href="https://blog.site2wouf.fr/2026/04/defi-mathematiques-et-anglais-retro-math.html" rel="bookmark">Défi Mathématiques et anglais | rétro Math</a></h2><a class="ct-media-container" href="https://blog.site2wouf.fr/2026/04/defi-mathematiques-et-anglais-retro-math.html" aria-label="Défi Mathématiques et anglais | rétro Math"><img width="1200" height="630" src="https://blog.site2wouf.fr/wp-content/uploads/2026/04/classe-anglais-style-image-retro.jpg" class="attachment-1536x1536 size-1536x1536 wp-post-image" alt="" loading="lazy" decoding="async" srcset="https://blog.site2wouf.fr/wp-content/uploads/2026/04/classe-anglais-style-image-retro.jpg 1200w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/classe-anglais-style-image-retro-300x158.jpg 300w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/classe-anglais-style-image-retro-1024x538.jpg 1024w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/classe-anglais-style-image-retro-768x403.jpg 768w" sizes="auto, (max-width: 1200px) 100vw, 1200px" itemprop="image" style="aspect-ratio: 16/9;" /></a><div class="entry-excerpt"><p>Dans cette classe de 35 élèves, les filles ont eu une moyenne de 12 à la dernière composition de thème anglais, et les garçons de 9,5 seulement. La moyenne générale était de 10,5. De combien le nombre de garçons excède-t-il…</p>
</div><a class="entry-button wp-element-button ct-button" href="https://blog.site2wouf.fr/2026/04/defi-mathematiques-et-anglais-retro-math.html">Lire la suite<span class="screen-reader-text">Défi Mathématiques et anglais | rétro Math</span></a></article><article class="entry-card card-content post-19467 post type-post status-publish format-standard has-post-thumbnail hentry category-mathematiques-blog tag-gymnastique tag-jeux-strategie tag-tag-mathematiques tag-problemes tag-retro" data-reveal="bottom:no"><ul class="entry-meta" data-type="simple:slash" data-id="meta_1" ><li class="meta-categories" data-type="simple"><a href="https://blog.site2wouf.fr/category/mathematiques-blog" rel="tag" class="ct-term-22">Mathématiques</a></li></ul><h2 class="entry-title"><a href="https://blog.site2wouf.fr/2026/04/defi-mathematiques-et-gymnastique-retro-math.html" rel="bookmark">Défi Mathématiques et gymnastique | rétro Math</a></h2><a class="ct-media-container" href="https://blog.site2wouf.fr/2026/04/defi-mathematiques-et-gymnastique-retro-math.html" aria-label="Défi Mathématiques et gymnastique | rétro Math"><img width="1125" height="630" src="https://blog.site2wouf.fr/wp-content/uploads/2026/04/gym.jpg" class="attachment-1536x1536 size-1536x1536 wp-post-image" alt="" loading="lazy" decoding="async" srcset="https://blog.site2wouf.fr/wp-content/uploads/2026/04/gym.jpg 1125w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/gym-300x168.jpg 300w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/gym-1024x573.jpg 1024w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/gym-768x430.jpg 768w" sizes="auto, (max-width: 1125px) 100vw, 1125px" itemprop="image" style="aspect-ratio: 16/9;" /></a><div class="entry-excerpt"><p>Le professeur de gymnastique ordonne aux 40 élèves de la classe de se mettre en rangs : 8 lignes et 5 colonnes. Il sélectionne ensuite le plus grand de chacune des 8 lignes pour un entraînement intensif de basket et…</p>
</div><a class="entry-button wp-element-button ct-button" href="https://blog.site2wouf.fr/2026/04/defi-mathematiques-et-gymnastique-retro-math.html">Lire la suite<span class="screen-reader-text">Défi Mathématiques et gymnastique | rétro Math</span></a></article><article class="entry-card card-content post-19464 post type-post status-publish format-standard has-post-thumbnail hentry category-echecs tag-attraction tag-chessdiag tag-mat-en-2 tag-promotion" data-reveal="bottom:no"><ul class="entry-meta" data-type="simple:slash" data-id="meta_1" ><li class="meta-categories" data-type="simple"><a href="https://blog.site2wouf.fr/category/echecs" rel="tag" class="ct-term-24">Echecs</a></li></ul><h2 class="entry-title"><a href="https://blog.site2wouf.fr/2026/04/les-blancs-matent-en-deux-coups.html" rel="bookmark">Les Blancs matent en deux coups !</a></h2><a class="ct-media-container" href="https://blog.site2wouf.fr/2026/04/les-blancs-matent-en-deux-coups.html" aria-label="Les Blancs matent en deux coups !"><img width="1200" height="630" src="https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-1.png" class="attachment-1536x1536 size-1536x1536 wp-post-image" alt="Les Blancs matent en deux coups !" loading="lazy" decoding="async" srcset="https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-1.png 1200w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-1-300x158.png 300w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-1-1024x538.png 1024w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/og_image-1-768x403.png 768w" sizes="auto, (max-width: 1200px) 100vw, 1200px" itemprop="image" style="aspect-ratio: 16/9;" /></a><div class="entry-excerpt"><p>Oui, c&rsquo;est simple mais c&rsquo;est le week-end !</p>
</div><a class="entry-button wp-element-button ct-button" href="https://blog.site2wouf.fr/2026/04/les-blancs-matent-en-deux-coups.html">Lire la suite<span class="screen-reader-text">Les Blancs matent en deux coups !</span></a></article><article class="entry-card card-content post-19456 post type-post status-publish format-standard has-post-thumbnail hentry category-mathematiques-blog tag-defi tag-tag-mathematiques tag-probabilite tag-problemes tag-retro" data-reveal="bottom:no"><ul class="entry-meta" data-type="simple:slash" data-id="meta_1" ><li class="meta-categories" data-type="simple"><a href="https://blog.site2wouf.fr/category/mathematiques-blog" rel="tag" class="ct-term-22">Mathématiques</a></li></ul><h2 class="entry-title"><a href="https://blog.site2wouf.fr/2026/04/les-grands-lacs-defi-math-et-geographie.html" rel="bookmark">Les grands lacs | Défi Math et géographie</a></h2><a class="ct-media-container" href="https://blog.site2wouf.fr/2026/04/les-grands-lacs-defi-math-et-geographie.html" aria-label="Les grands lacs | Défi Math et géographie"><img width="1200" height="630" src="https://blog.site2wouf.fr/wp-content/uploads/2026/04/defimathgeo.png" class="attachment-1536x1536 size-1536x1536 wp-post-image" alt="" loading="lazy" decoding="async" srcset="https://blog.site2wouf.fr/wp-content/uploads/2026/04/defimathgeo.png 1200w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/defimathgeo-300x158.png 300w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/defimathgeo-1024x538.png 1024w, https://blog.site2wouf.fr/wp-content/uploads/2026/04/defimathgeo-768x403.png 768w" sizes="auto, (max-width: 1200px) 100vw, 1200px" itemprop="image" style="aspect-ratio: 16/9;" /></a><div class="entry-excerpt"><p>À l&rsquo;interrogation écrite de géo, on nous demande quels sont les grands lacs que séparent les chutes du Niagara. À vrai dire, je n&rsquo;en sais rien. Elles sont peut-être entre les lacs Supérieur et Michigan, peut-être entre l&rsquo;Huron et l’Érié,…</p>
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</div><a class="entry-button wp-element-button ct-button" href="https://blog.site2wouf.fr/2026/04/les-blancs-jouent-et-gagnent-3.html">Lire la suite<span class="screen-reader-text">Les Blancs jouent et gagnent</span></a></article></div>
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