{"id":208,"date":"2022-10-03T22:03:41","date_gmt":"2022-10-03T20:03:41","guid":{"rendered":"https:\/\/www.nicolodefabrizio.it\/?p=208"},"modified":"2022-10-25T19:03:02","modified_gmt":"2022-10-25T17:03:02","slug":"la-grande-mela","status":"publish","type":"post","link":"https:\/\/www.nicolodefabrizio.it\/?p=208","title":{"rendered":"La Grande Mela"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container fusion-parallax-none nonhundred-percent-fullwidth non-hundred-percent-height-scrolling fusion-no-small-visibility\" style=\"background-color: rgba(255,255,255,0);background-image: url(&quot;https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/texture-5.1.png&quot;);background-position: center center;background-repeat: no-repeat;border-width: 0px 0px 0px 0px;border-color:#e2e2e2;border-style:solid;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column fusion-flex-align-self-stretch\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><div class=\"fusion-separator fusion-full-width-sep\" style=\"align-self: center;margin-left: auto;margin-right: auto;margin-top:20%;margin-bottom:20%;width:100%;\"><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-0{width:100% !important;margin-top : 0px;margin-bottom : 0px;}.fusion-builder-column-0 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 19.2%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 19.2%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-0{width:100% !important;order : 0;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 14.4%;margin-left : 14.4%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-0{width:100% !important;order : 0;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 9.6%;margin-left : 9.6%;}}<\/style><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-flex-container.fusion-builder-row-1{ padding-top : 0px;margin-top : 0px;padding-right : 0px;padding-bottom : 0px;margin-bottom : 0px;padding-left : 0px;}<\/style><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container hundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"background-color: rgba(0,0,0,0.95);background-position: center center;background-repeat: no-repeat;border-width: 0px 0px 0px 0px;border-color:#e2e2e2;border-style:solid;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start\" style=\"width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_1 1_1 fusion-flex-column fusion-flex-align-self-center\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-center fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><style type=\"text\/css\">@media only screen and (max-width:1024px) {.fusion-title.fusion-title-1{margin-top:10px!important; margin-right:0px!important;margin-bottom:15px!important;margin-left:0px!important;}}@media only screen and (max-width:640px) {.fusion-title.fusion-title-1{margin-top:10px!important; margin-right:0px!important;margin-bottom:10px!important; margin-left:0px!important;}}<\/style><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-center fusion-title-text fusion-title-size-two\" style=\"margin-top:10px;margin-right:0px;margin-bottom:15px;margin-left:0px;\"><h2 class=\"title-heading-center\" style=\"margin:0;color:rgba(255,253,250,0.95);\">La Grande Mela<\/h2><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"align-self: center;margin-left: auto;margin-right: auto;margin-bottom:2.5%;width:100%;\"><\/div><div class=\"fusion-text fusion-text-1\" style=\"color:rgba(255,253,250,0.95);\"><p>Grazie ad Anna, la mia regina degli scacchi, sono recentemente venuto a conoscenza di un interessante collegamento tra il mondo delle 64 caselle e la matematica: sto parlando della <span style=\"color: rgb(255, 199, 0);\">distanza di Manhattan<\/span> (da cui il titolo dell&#8217;articolo) e della <span style=\"color: rgb(255, 199, 0);\">distanza di Chebyshev<\/span>. Per non attirarmi l&#8217;ira di Anna e dei suoi colleghi matematici, riporto di seguito le definizioni esatte, dalla fonte, di questi due concetti (eventuali reclami da sporgersi a Wikipedia):<\/p>\n<p>&#8211; distanza di Manhattan: In matematica, la geometria del taxi o distanza di Manhattan (in inglese Taxicab geometry o Manhattan distance) \u00e8 un concetto geometrico introdotto da Hermann Minkowski secondo il quale la distanza tra due punti \u00e8 la somma del valore assoluto delle differenze delle loro coordinate.<\/p>\n<p>&#8211; distanza di Chebyshev: In matematica, la distanza di \u010ceby\u0161\u00ebv, conosciuta anche come distanza della scacchiera o distanza di Lagrange, \u00e8 una distanza su spazi vettoriali tale per cui la distanza tra due vettori \u00e8 il valore massimo della loro differenza lungo gli assi.<\/p>\n<p>In pratica queste due definizioni descrivono la <span style=\"color: rgb(255, 199, 0);\">distanza tra due punti nello spazio<\/span> in modo del tutto differente rispetto alla nostra normale, ed euclidea, concezione di tale concetto. In particolare a scacchi <span style=\"color: rgb(255, 199, 0);\">i movimenti di <\/span><span style=\"color: rgb(255, 199, 0);\">Alfiere, Torre, Donna e Re<\/span> obbediscono alle regole, o formule, delle distanze di Manhattan (Alfiere e Torre) e Chebyshev (Donna e Re).<\/p><\/p>\n<\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-1{width:100% !important;margin-top : 5%;margin-bottom : 0%;}.fusion-builder-column-1 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 24%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 24%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-1{width:100% !important;order : 0;margin-top : 10%;}.fusion-builder-column-1 > .fusion-column-wrapper {margin-right : 9.6%;margin-left : 9.6%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-1{width:100% !important;order : 0;margin-top : 10%;}.fusion-builder-column-1 > .fusion-column-wrapper {margin-right : 9.6%;margin-left : 9.6%;}}<\/style><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_1 1_1 fusion-flex-column fusion-flex-align-self-center\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-center fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><style type=\"text\/css\">@media only screen and (max-width:1024px) {.fusion-title.fusion-title-2{margin-top:10px!important; margin-right:0px!important;margin-bottom:15px!important;margin-left:0px!important;}}@media only screen and (max-width:640px) {.fusion-title.fusion-title-2{margin-top:10px!important; margin-right:0px!important;margin-bottom:10px!important; margin-left:0px!important;}}<\/style><div class=\"fusion-title title fusion-title-2 fusion-sep-none fusion-title-center fusion-title-text fusion-title-size-two\" style=\"margin-top:10px;margin-right:0px;margin-bottom:15px;margin-left:0px;\"><h2 class=\"title-heading-center\" style=\"margin:0;color:rgba(255,253,250,0.95);\">La distanza di Manhattan<\/h2><\/div><div style=\"text-align:center;\"><span class=\" fusion-imageframe imageframe-none imageframe-1 hover-type-none fusion-animated\" style=\"margin-top:2.5%;margin-bottom:5%;\" data-animationType=\"fadeInUp\" data-animationDuration=\"2.0\" data-animationOffset=\"top-into-view\"><img decoding=\"async\" width=\"400\" height=\"400\" title=\"1\" src=\"https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/1-400x400.png\" class=\"img-responsive wp-image-215\" srcset=\"https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/1-200x200.png 200w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/1-400x400.png 400w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/1-600x600.png 600w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/1-800x800.png 800w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/1.png 954w\" sizes=\"(max-width: 640px) 100vw, 800px\" \/><\/span><\/div><div class=\"fusion-text fusion-text-2\" style=\"color:rgba(255,253,250,0.95);\"><p>Per procedere con la spiegazione consideriamo innanzitutto una scacchiera sgombra con la sola Torre in a1. Dopodich\u00e9 immaginiamo <span style=\"color: rgb(255, 199, 0);\">ciascuna casa come un punto di coordinate di un piano cartesiano x y<\/span>. La casa a1 sar\u00e0 perci\u00f2 di coordinate x=0 y=0, ovvero l&#8217;origine del piano, mentre la casa h8 sar\u00e0 di coordinate x=7 y=7.<\/p>\n<p>Ci\u00f2 detto, la distanza D che la Torre in a1 (casa di set di coordinate x1 y1) dovr\u00e0 percorrere per andare in h8 (casa di set di coordinate x2 y2) sar\u00e0 uguale a:<\/p>\n<p style=\"text-align: center;\">D = | x1 &#8211; x2 | + | y1 &#8211; y2 | = | 0 &#8211; 7 | + | 0 &#8211; 7 | = 7 + 7 = 14<\/p>\n<p>Interessante \u00e8 notare come questo valore sia <span style=\"color: rgb(255, 199, 0);\">indipendente dalla geometria del percorso scelto<\/span> per arrivare in h8. Proseguite per a8 e poi svoltate a destra, oppure procedete a zig-zag lungo la grande diagonale a1-h8: la distanza di Manhattan sar\u00e0 sempre di 14. Se consideriamo inoltre che la Torre pu\u00f2 muoversi di n case alla volta, a differenza per esempio del Re, allora possiamo concludere che, a scacchiera sgombra, <span style=\"color: rgb(255, 199, 0);\">una Torre impiega sempre e solo una o due mosse per spostarsi da una casa qualsiasi a un&#8217;altra<\/span>.<\/p>\n<p>Lo stesso ragionamento seguito finora si applica anche all\u2019Alfiere con l\u2019unica differenza che, ovviamente, la casa di arrivo debba essere dello stesso colore di quella di partenza. Possiamo quindi concludere che, a scacchiera sgombra, <span style=\"color: rgb(255, 199, 0);\">un Alfiere impiega sempre e solo una o due mosse per spostarsi da una casa qualsiasi a un\u2019altra dello stesso colore<\/span>.<\/p><\/p>\n<\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-2{width:100% !important;margin-top : 5%;margin-bottom : 0%;}.fusion-builder-column-2 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 24%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 24%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-2{width:100% !important;order : 0;}.fusion-builder-column-2 > .fusion-column-wrapper {margin-right : 9.6%;margin-left : 9.6%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-2{width:100% !important;order : 0;margin-top : 10%;}.fusion-builder-column-2 > .fusion-column-wrapper {margin-right : 9.6%;margin-left : 9.6%;}}<\/style><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-3 fusion_builder_column_1_1 1_1 fusion-flex-column fusion-flex-align-self-center\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-center fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><style type=\"text\/css\">@media only screen and (max-width:1024px) {.fusion-title.fusion-title-3{margin-top:10px!important; margin-right:0px!important;margin-bottom:15px!important;margin-left:0px!important;}}@media only screen and (max-width:640px) {.fusion-title.fusion-title-3{margin-top:10px!important; margin-right:0px!important;margin-bottom:10px!important; margin-left:0px!important;}}<\/style><div class=\"fusion-title title fusion-title-3 fusion-sep-none fusion-title-center fusion-title-text fusion-title-size-two\" style=\"margin-top:10px;margin-right:0px;margin-bottom:15px;margin-left:0px;\"><h2 class=\"title-heading-center\" style=\"margin:0;color:rgba(255,253,250,0.95);\">La distanza di Chebyshev<\/h2><\/div><div style=\"text-align:center;\"><span class=\" fusion-imageframe imageframe-none imageframe-2 hover-type-none fusion-animated\" style=\"margin-top:2.5%;margin-bottom:5%;\" data-animationType=\"fadeInUp\" data-animationDuration=\"2.0\" data-animationOffset=\"top-into-view\"><img decoding=\"async\" width=\"400\" height=\"400\" title=\"2\" src=\"https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/2-400x400.png\" class=\"img-responsive wp-image-222\" srcset=\"https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/2-200x200.png 200w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/2-400x400.png 400w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/2-600x600.png 600w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/2-800x800.png 800w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/2.png 954w\" sizes=\"(max-width: 640px) 100vw, 800px\" \/><\/span><\/div><div class=\"fusion-text fusion-text-3\" style=\"color:rgba(255,253,250,0.95);\"><p>Pi\u00f9 complesso \u00e8 invece il caso di Donna e Re. Per procedere con la spiegazione consideriamo il diagramma con il solo Re in a4 e immaginiamo nuovamente <span style=\"color: #ffc700;\">ciascuna casa come un punto di coordinate di un piano cartesiano x y<\/span>. Questa volta vogliamo dimostrare che, attraverso l\u2019applicazione della formula della distanza di Chebyshev, il Re in a4, per esempio, impiega sempre 7 mosse per arrivare sia in h4 che in h8.<\/p>\n<p>Definiamo innanzitutto la casa di partenza a4 come l\u2019origine del piano, quindi di coordinate x=0 y=0. Dopodich\u00e9 ricaviamo i due set di coordinate delle case di arrivo h4 e h8:<\/p>\n<\/p>\n<div style=\"text-align: center;\"><span style=\"font-family: var(--body_typography-font-family); font-size: var(--body_typography-font-size); font-style: var(--body_typography-font-style,normal); font-weight: var(--body_typography-font-weight); letter-spacing: var(--body_typography-letter-spacing);\">h4 ha coordinate x=7, y=0 (primo set)<\/span><\/div>\n<div style=\"text-align: center;\"><span style=\"font-family: var(--body_typography-font-family); font-size: var(--body_typography-font-size); font-style: var(--body_typography-font-style,normal); font-weight: var(--body_typography-font-weight); letter-spacing: var(--body_typography-letter-spacing);\">h8 ha coordinate x=7, y=4 (secondo set)<\/span><\/div>\n<\/p>\n<p>Infine, prendiamo i valori massimi per ciascun set di numeri e constatiamo che sono per entrambi 7. <span style=\"color: #ffc700;\">Ci\u00f2 dimostra l\u2019equivalenza in termini di distanza tra le case a4-h4 e a4-h8<\/span>.<\/p>\n<p>Per il Re in particolare, muovendo esso solo di una casa per volta, <span style=\"color: #ffc700;\">questa distanza<\/span> di sette <span style=\"color: #ffc700;\">corrisponde anche al numero di mosse necessarie per percorrerla<\/span>. La Donna invece segue la stessa logica di Torre e Alfiere e impiega sempre e solo una o due mosse per spostarsi da una casa qualsiasi a un\u2019altra.<\/p>\n<\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-3{width:100% !important;margin-top : 5%;margin-bottom : 0%;}.fusion-builder-column-3 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 24%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 24%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-3{width:100% !important;order : 0;}.fusion-builder-column-3 > .fusion-column-wrapper {margin-right : 9.6%;margin-left : 9.6%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-3{width:100% !important;order : 0;margin-top : 10%;}.fusion-builder-column-3 > .fusion-column-wrapper {margin-right : 9.6%;margin-left : 9.6%;}}<\/style><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-4 fusion_builder_column_1_1 1_1 fusion-flex-column fusion-flex-align-self-center\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-center fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><style type=\"text\/css\">@media only screen and (max-width:1024px) {.fusion-title.fusion-title-4{margin-top:10px!important; margin-right:0px!important;margin-bottom:15px!important;margin-left:0px!important;}}@media only screen and (max-width:640px) {.fusion-title.fusion-title-4{margin-top:10px!important; margin-right:0px!important;margin-bottom:10px!important; margin-left:0px!important;}}<\/style><div class=\"fusion-title title fusion-title-4 fusion-sep-none fusion-title-center fusion-title-text fusion-title-size-two\" style=\"margin-top:10px;margin-right:0px;margin-bottom:15px;margin-left:0px;\"><h2 class=\"title-heading-center\" style=\"margin:0;color:rgba(255,253,250,0.95);\">Incrocio di traiettoria<\/h2><\/div><div style=\"text-align:center;\"><span class=\" fusion-imageframe imageframe-none imageframe-3 hover-type-none fusion-animated\" style=\"margin-top:2.5%;margin-bottom:5%;\" data-animationType=\"fadeInUp\" data-animationDuration=\"2.0\" data-animationOffset=\"top-into-view\"><img decoding=\"async\" width=\"400\" height=\"400\" title=\"3\" src=\"https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/3-400x400.png\" class=\"img-responsive wp-image-224\" srcset=\"https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/3-200x200.png 200w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/3-400x400.png 400w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/3-600x600.png 600w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/3-800x800.png 800w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/3.png 954w\" sizes=\"(max-width: 640px) 100vw, 800px\" \/><\/span><\/div><div class=\"fusion-text fusion-text-4\" style=\"color:rgba(255,253,250,0.95);\"><p>\u00c8 arrivato il momento di mettere in pratica le nostre nuove conoscenze sul movimento del Re con questo interessante problema.<\/p>\n<p><span style=\"font-family: var(--body_typography-font-family); font-size: var(--body_typography-font-size); font-style: var(--body_typography-font-style,normal); font-weight: var(--body_typography-font-weight); letter-spacing: var(--body_typography-letter-spacing);\">Il Re bianco \u00e8 lontano dal centro dell\u2019azione e pare proprio che non riuscir\u00e0 a difendere in modo efficace il suo pedone in b6. Per aiutarvi nella risoluzione del problema, elenco di seguito i <span style=\"color: rgb(255, 199, 0);\">temi principali<\/span> della posizione:<\/span><\/p>\n<p><span style=\"font-family: var(--body_typography-font-family); font-size: var(--body_typography-font-size); font-style: var(--body_typography-font-style,normal); font-weight: var(--body_typography-font-weight); letter-spacing: var(--body_typography-letter-spacing);\">&#8211; le strade multiple del Re (o distanza di Chebyshev)<\/span><br \/>\n<span style=\"font-family: var(--body_typography-font-family); font-size: var(--body_typography-font-size); font-style: var(--body_typography-font-style,normal); font-weight: var(--body_typography-font-weight); letter-spacing: var(--body_typography-letter-spacing);\">&#8211; la posizione di Tr\u00e9buchet<\/span><br \/>\n<span style=\"font-family: var(--body_typography-font-family); font-size: var(--body_typography-font-size); font-style: var(--body_typography-font-style,normal); font-weight: var(--body_typography-font-weight); letter-spacing: var(--body_typography-letter-spacing);\">&#8211; la spallata<\/span><br \/>\n<span style=\"font-family: var(--body_typography-font-family); font-size: var(--body_typography-font-size); font-style: var(--body_typography-font-style,normal); font-weight: var(--body_typography-font-weight); letter-spacing: var(--body_typography-letter-spacing);\">&#8211; le case chiave nei finali di Re e pedone vs. Re<\/span><\/p>\n<p><span style=\"font-family: var(--body_typography-font-family); font-size: var(--body_typography-font-size); font-style: var(--body_typography-font-style,normal); font-weight: var(--body_typography-font-weight); letter-spacing: var(--body_typography-letter-spacing);\">Per chi non fosse familiare con nessuno o solo alcuni di questi temi, trova di seguito i passaggi risolutivi del problema:<\/span><\/p>\n<p>1) Innanzitutto, abbiamo appena imparato che per andare da una casa a un\u2019altra <span style=\"color: rgb(255, 199, 0);\">il Re pu\u00f2 percorrere diverse strade<\/span> (multiple appunto) equivalenti tra loro in distanza. Ci\u00f2 significa che il Re bianco pu\u00f2 approcciare il pedone in b6 in diversi modi e impiegando gli stessi tempi (numero di mosse). In particolare, Il Re bianco pu\u00f2 muoversi in tre direzioni: in alto a sinistra, a sinistra o in basso a sinistra.<\/p>\n<\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-4{width:100% !important;margin-top : 5%;margin-bottom : 0px;}.fusion-builder-column-4 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 24%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 24%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-4{width:100% !important;order : 0;}.fusion-builder-column-4 > .fusion-column-wrapper {margin-right : 9.6%;margin-left : 9.6%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-4{width:100% !important;order : 0;margin-top : 10%;}.fusion-builder-column-4 > .fusion-column-wrapper {margin-right : 9.6%;margin-left : 9.6%;}}<\/style><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-5 fusion_builder_column_1_1 1_1 fusion-flex-column fusion-flex-align-self-center\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-center fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><div class=\"fusion-text fusion-text-5\" style=\"color:rgba(255,253,250,0.95);\"><p>2) <span style=\"color: rgb(255, 199, 0);\">Se si sposta in alto a sinistra<\/span>, raggiungiamo la seguente <span style=\"color: rgb(255, 199, 0);\">posizione di Tr\u00e9buchet<\/span>, una posizione di zugzwang reciproco in cui la mossa \u00e8 al Bianco e il Re nero cattura il pedone. Il Bianco perde.<\/p>\n<\/div><div style=\"text-align:center;\"><span class=\" fusion-imageframe imageframe-none imageframe-4 hover-type-none fusion-animated\" style=\"margin-top:2.5%;margin-bottom:5%;\" data-animationType=\"fadeInUp\" data-animationDuration=\"2.0\" data-animationOffset=\"top-into-view\"><img decoding=\"async\" width=\"400\" height=\"400\" title=\"4\" src=\"https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/4-400x400.png\" class=\"img-responsive wp-image-231\" srcset=\"https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/4-200x200.png 200w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/4-400x400.png 400w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/4-600x600.png 600w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/4-800x800.png 800w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/4.png 954w\" sizes=\"(max-width: 640px) 100vw, 800px\" \/><\/span><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-5{width:100% !important;margin-top : 0px;margin-bottom : 0px;}.fusion-builder-column-5 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 24%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 24%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-5{width:100% !important;order : 0;}.fusion-builder-column-5 > .fusion-column-wrapper {margin-right : 9.6%;margin-left : 9.6%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-5{width:100% !important;order : 0;}.fusion-builder-column-5 > .fusion-column-wrapper {margin-right : 9.6%;margin-left : 9.6%;}}<\/style><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-6 fusion_builder_column_1_1 1_1 fusion-flex-column fusion-flex-align-self-center\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-center fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><div class=\"fusion-text fusion-text-6\" style=\"color:rgba(255,253,250,0.95);\"><p>3) <span style=\"color: rgb(255, 199, 0);\">Se si sposta a sinistra<\/span>, raggiungiamo la seguente posizione in cui il Re nero interrompe la traiettoria di movimento del Re bianco, in gergo <span style=\"color: rgba(255, 253, 250, 0.95);\">effettua una <span style=\"color: rgb(255, 199, 0);\">spallata<\/span><\/span>, e lo allontana quanto basta dalla difesa del pedone. Il Bianco perde.<\/p>\n<\/div><div style=\"text-align:center;\"><span class=\" fusion-imageframe imageframe-none imageframe-5 hover-type-none fusion-animated\" style=\"margin-top:2.5%;margin-bottom:5%;\" data-animationType=\"fadeInUp\" data-animationDuration=\"2.0\" data-animationOffset=\"top-into-view\"><img decoding=\"async\" width=\"400\" height=\"400\" title=\"5\" src=\"https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/5-400x400.png\" class=\"img-responsive wp-image-232\" srcset=\"https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/5-200x200.png 200w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/5-400x400.png 400w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/5-600x600.png 600w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/5-800x800.png 800w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/5.png 954w\" sizes=\"(max-width: 640px) 100vw, 800px\" \/><\/span><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-6{width:100% !important;margin-top : 0px;margin-bottom : 0px;}.fusion-builder-column-6 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 24%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 24%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-6{width:100% !important;order : 0;}.fusion-builder-column-6 > .fusion-column-wrapper {margin-right : 9.6%;margin-left : 9.6%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-6{width:100% !important;order : 0;}.fusion-builder-column-6 > .fusion-column-wrapper {margin-right : 9.6%;margin-left : 9.6%;}}<\/style><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-7 fusion_builder_column_1_1 1_1 fusion-flex-column fusion-flex-align-self-center\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-center fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><div class=\"fusion-text fusion-text-7\" style=\"color:rgba(255,253,250,0.95);\"><p>4) <span style=\"color: rgb(255, 199, 0);\">Se si sposta in basso a sinistra<\/span>, raggiungiamo invece la seguente posizione in cui il Re bianco riesce a incrociare dal basso la traiettoria del Re nero e si avvicina per difendere il pedone. Il pedone in b6 viene comunque catturato, ma il Re bianco \u00e8 giusto in tempo per impedire al Re nero di occupare le <span style=\"color: rgb(255, 199, 0);\">case chiave<\/span> del suo pedone in b7. Dalla teoria dei finali di Re e pedone vs. Re, la posizione \u00e8 patta.<\/p>\n<\/div><div style=\"text-align:center;\"><span class=\" fusion-imageframe imageframe-none imageframe-6 hover-type-none fusion-animated\" style=\"margin-top:2.5%;margin-bottom:5%;\" data-animationType=\"fadeInUp\" data-animationDuration=\"2.0\" data-animationOffset=\"top-into-view\"><img decoding=\"async\" width=\"400\" height=\"400\" title=\"6\" src=\"https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/6-400x400.png\" class=\"img-responsive wp-image-233\" srcset=\"https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/6-200x200.png 200w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/6-400x400.png 400w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/6-600x600.png 600w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/6-800x800.png 800w, https:\/\/www.nicolodefabrizio.it\/wp-content\/uploads\/2022\/10\/6.png 954w\" 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0px;}<\/style><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[4],"class_list":["post-208","post","type-post","status-publish","format-standard","hentry","category-senza-categoria","tag-curiosita"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>La Grande Mela - Nicol\u00f2 De Fabrizio<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.nicolodefabrizio.it\/?p=208\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La Grande Mela - Nicol\u00f2 De Fabrizio\" \/>\n<meta property=\"og:url\" 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