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The specific problem is: <b>Not written to wikipedia's standards.</b><span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/Non-simultaneous_double_squeeze" title="Special:EditPage/Non-simultaneous double squeeze">improve this article</a> if you can.</span> <span class="date-container"><i>(<span class="date">March 2023</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> </div> </div><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p>In <a href="/wiki/Contract_bridge" title="Contract bridge">bridge</a>, a <b>non-simultaneous double squeeze</b> is a <a href="/wiki/Double_squeeze" title="Double squeeze">double squeeze</a> in which the pressure is not applied to both opponents at the same trick.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Before categorizing a little more about it we will show a <a href="/wiki/Contract_bridge_diagram" title="Contract bridge diagram">diagram</a> for the four basic matrices. </p> <table class="wikitable" align="left" style="width:330px; line-height:1.1em; margin:10px;"> <tbody><tr> <td style="width:92px; vertical-align:top;" colspan="2" rowspan="4"> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">2 </td> <td style="width:92px;" colspan="2" rowspan="4"> </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">A J </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">K </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">— </td></tr> <tr> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">Q 6 </td> <td colspan="2" rowspan="4" style="text-align:center;background-color:#008000; color:#FFFFFF;"><p style="text-align:center;line-height:1.1em;"><b>N</b><br /><br /><b>W               E</b><br /><br /><b>S</b></p> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px">K 9 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">K Q </td> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">3 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">— </td> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">A </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">— </td> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">— </td></tr> <tr> <td style="width:92px;" colspan="2" rowspan="4"> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">A 3 </td> <td colspan="2" rowspan="4"> </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">2 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">— </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">A </td></tr></tbody></table> <p><b>1)</b> When the club ace is played West is squeezed immediately and has to shed a spade. North plays the now useless jack of hearts and East still has an idle card to throw, the three of hearts. But when the heart deuce is led up to the ace, East is squeezed on his turn in the <a href="/wiki/Pointed_suit" class="mw-redirect" title="Pointed suit">pointed suits</a>. This is a positional squeeze. </p> <div style="clear:both;" class=""></div> <table class="wikitable" align="left" style="width:330px; line-height:1.1em; margin:10px;"> <tbody><tr> <td style="width:92px; vertical-align:top;" colspan="2" rowspan="4"> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">2 </td> <td style="width:92px;" colspan="2" rowspan="4"> </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">A J </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">K </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">2 </td></tr> <tr> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">Q 6 5 </td> <td colspan="2" rowspan="4" style="text-align:center;background-color:#008000; color:#FFFFFF;"><p style="text-align:center;line-height:1.1em;"><b>N</b><br /><br /><b>W               E</b><br /><br /><b>S</b></p> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px">J 9 4 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">3 </td> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">K Q </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">A </td> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">— </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">— </td> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">— </td></tr> <tr> <td style="width:92px;" colspan="2" rowspan="4"> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">A K 3 </td> <td colspan="2" rowspan="4"> </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">2 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">— </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">A </td></tr></tbody></table> <p><b>2)</b> When the club ace is played West can shed a heart, but East is squeezed and has to give up his spade guard. When the heart deuce is led to the ace it is West who is squeezed in the <a href="/wiki/Pointed_suit" class="mw-redirect" title="Pointed suit">pointed suits</a>. This is an automatic squeeze. </p> <div style="clear:both;" class=""></div> <table class="wikitable" align="left" style="width:330px; line-height:1.1em; margin:10px;"> <tbody><tr> <td style="width:92px; vertical-align:top;" colspan="2" rowspan="4"> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">K 3 </td> <td style="width:92px;" colspan="2" rowspan="4"> </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">A J </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">Q </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">— </td></tr> <tr> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">Q 6 5 </td> <td colspan="2" rowspan="4" style="text-align:center;background-color:#008000; color:#FFFFFF;"><p style="text-align:center;line-height:1.1em;"><b>N</b><br /><br /><b>W               E</b><br /><br /><b>S</b></p> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px">J 9 4 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">K Q </td> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">3 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">— </td> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">K </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">— </td> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">— </td></tr> <tr> <td style="width:92px;" colspan="2" rowspan="4"> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">A 7 2 </td> <td colspan="2" rowspan="4"> </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">— </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">2 </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">A </td></tr></tbody></table> <p><b>3)</b> When the club ace is played West is squeezed immediately and has to shed a spade. North plays the now useless jack of hearts and East still has an idle card to throw, the three of hearts. A spade is led to the king and the heart ace is cashed. On that card East is squeezed in the <a href="/wiki/Pointed_suit" class="mw-redirect" title="Pointed suit">pointed suits</a>. This is a positional squeeze. </p> <div style="clear:both;" class=""></div> <table class="wikitable" align="left" style="width:330px; line-height:1.1em; margin:10px;"> <tbody><tr> <td style="width:92px; vertical-align:top;" colspan="2" rowspan="4"> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">2 </td> <td style="width:92px;" colspan="2" rowspan="4"> </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">A K 8 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">— </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">2 </td></tr> <tr> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">Q 5 </td> <td colspan="2" rowspan="4" style="text-align:center;background-color:#008000; color:#FFFFFF;"><p style="text-align:center;line-height:1.1em;"><b>N</b><br /><br /><b>W               E</b><br /><br /><b>S</b></p> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px">J 8 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">Q J 9 </td> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">3 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">— </td> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">K </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">— </td> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">3 </td></tr> <tr> <td style="width:92px;" colspan="2" rowspan="4"> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">A 3 </td> <td colspan="2" rowspan="4"> </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">2 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">Q </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">A </td></tr></tbody></table> <p><b>4)</b>When the club ace is played West is squeezed immediately and has to shed a spade. <i>Two</i> hearts are cashed and East is squeezed between the <a href="/wiki/Pointed_suit" class="mw-redirect" title="Pointed suit">pointed suits</a> on the second of them. This is an automatic squeeze. </p> <div style="clear:both;" class=""></div> <p>In all double squeezes the second squeeze card is opposed to (that is in the other hand than) the first squeeze card (it could be in the same hand in diagram (2) though). The double menace is always in the same hand than the first squeeze card. In matrices (1) and (2) the second squeeze executes immediately after the first. For that reason the squeeze card is an entry to North. In matrices (3) and (4) we cross to the North hand and then execute the squeeze, <b>two</b> tricks later than the first one. But that could even be later as demonstrated by the following diagram, which is a somehow extreme variation of (4). </p> <table class="wikitable" align="left" style="width:330px; line-height:1.1em; margin:10px;"> <tbody><tr> <td style="width:92px; vertical-align:top;" colspan="2" rowspan="4"> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">3 </td> <td style="width:92px;" colspan="2" rowspan="4"> </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">A K Q J 10 2 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">— </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">2 </td></tr> <tr> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">Q 6 </td> <td colspan="2" rowspan="4" style="text-align:center;background-color:#008000; color:#FFFFFF;"><p style="text-align:center;line-height:1.1em;"><b>N</b><br /><br /><b>W               E</b><br /><br /><b>S</b></p> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px">K 9 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">9 8 7 6 5 4 </td> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">- </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">— </td> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">A K Q J 10 9 </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">— </td> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">— </td></tr> <tr> <td style="width:92px;" colspan="2" rowspan="4"> </td> <td style="width:12px; font-size:120%">♠</td> <td style="width:80px;">A 2 </td> <td colspan="2" rowspan="4"> </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♥</td> <td style="width:80px;">3 </td></tr> <tr> <td style="color:#FF0000; width:12px; font-size:120%">♦</td> <td style="width:80px;">5 4 3 2 </td></tr> <tr> <td style="color:#000000; width:12px; font-size:120%">♣</td> <td style="width:80px;">A </td></tr></tbody></table> <p>We have an eight card ending and by playing the club ace West is squeezed, forced to give up a spade. East will be squeezed <b>five</b> tricks later on the heart ten. </p> <div style="clear:both;" class=""></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Non-simultaneous_double_squeeze&action=edit&section=1" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation book cs1"><a rel="nofollow" class="external text" href="https://books.google.com/books?id=KqRJAAAAIBAJ&dq=%22Non-simultaneous+double+squeeze%22+-wikipedia+bridge&pg=PA55&article_id=3591,3453440"><i>Bangor Daily News</i></a>. 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