<snapdata remixID="12382943"><project name="U5L6-TicTacToe AI" app="Snap! 8.2, https://snap.berkeley.edu" version="2"><notes></notes><thumbnail>data:image/png;base64,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</thumbnail><scenes select="1"><scene name="U5L6-TicTacToe AI"><notes></notes><hidden></hidden><headers></headers><code></code><blocks><block-definition s="for %&apos;i&apos; = %&apos;start&apos; to %&apos;end&apos; %&apos;action&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%n">1</input><input type="%n">10</input><input type="%cs"></input></inputs><script><block s="doDeclareVariables"><list><l>step</l><l>tester</l></list></block><block s="doIfElse"><block s="reportVariadicGreaterThan"><list><block var="start"/><block var="end"/></list></block><script><block s="doSetVar"><l>step</l><l>-1</l></block><block s="doSetVar"><l>tester</l><block s="reifyReporter"><autolambda><block s="reportVariadicLessThan"><list><block var="i"/><block var="end"/></list></block></autolambda><list></list></block></block></script><script><block s="doSetVar"><l>step</l><l>1</l></block><block s="doSetVar"><l>tester</l><block s="reifyReporter"><autolambda><block s="reportVariadicGreaterThan"><list><block var="i"/><block var="end"/></list></block></autolambda><list></list></block></block></script></block><block s="doSetVar"><l>i</l><block var="start"/></block><block s="doUntil"><block s="evaluate"><block var="tester"/><list></list></block><script><block s="doRun"><block var="action"/><list></list></block><block s="doChangeVar"><l>i</l><block var="step"/></block></script></block></script></block-definition><block-definition s="join words %&apos;words&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%mult%txt"></input></inputs><script><block s="doWarp"><script><block s="doIf"><block s="errorObsolete"></block><script><block s="doReport"><block s="reportListItem"><l>1</l><block var="words"/></block></block></script></block><block s="doIf"><block s="reportVariadicEquals"><list><l></l><block s="reportListItem"><l>1</l><block var="words"/></block></list></block><script><block s="doReport"><custom-block s="join words %mult%txt"><block s="reportCDR"><block var="words"/></block></custom-block></block></script></block><block s="doIf"><block s="reportVariadicEquals"><list><l></l><block s="reportListItem"><l>2</l><block var="words"/></block></list></block><script><block s="doReport"><custom-block s="join words %mult%txt"><block s="reportCONS"><block s="reportListItem"><l>1</l><block var="words"/></block><block s="reportCDR"><block s="reportCDR"><block var="words"/></block></block></block></custom-block></block></script></block><block s="doReport"><block s="reportJoinWords"><list><block s="reportListItem"><l>1</l><block var="words"/></block><l> </l><custom-block s="join words %mult%txt"><block s="reportCDR"><block var="words"/></block></custom-block></list></block></block></script></block></script><scripts><script x="229.00000300000002" y="196.77778077777774"><block s="reportJoinWords"><list><l></l><l></l></list></block></script></scripts></block-definition><block-definition s="ignore %&apos;x&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs></block-definition><block-definition s="makeBoard" type="command" category="other"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doSwitchToCostume"><l>Empty</l></block><block s="show"></block><block s="setEffect"><l><option>ghost</option></l><l>30</l></block><block s="setScale"><l>95</l></block><block s="doSetVar"><l>position number</l><l>1</l></block><custom-block s="for %upvar = %n to %n %cs"><l>i</l><l>1</l><l>3</l><script><custom-block s="for %upvar = %n to %n %cs"><l>j</l><l>1</l><l>3</l><script><block s="gotoXY"><block s="reportVariadicSum"><list><l>-100</l><block s="reportVariadicProduct"><list><l>50</l><block var="j"/></list></block></list></block><block s="reportDifference"><l>100</l><block s="reportVariadicProduct"><list><l>50</l><block var="i"/></list></block></block></block><block s="createClone"><l><option>myself</option></l></block><block s="doChangeVar"><l>position number</l><l>1</l></block></script></custom-block></script></custom-block><block s="hide"></block></script></block-definition><block-definition s="possible winning triples" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doReport"><block s="reportNewList"><list><block s="reportNewList"><list><l>1</l><l>2</l><l>3</l></list></block><block s="reportNewList"><list><l>4</l><l>5</l><l>6</l></list></block><block s="reportNewList"><list><l>7</l><l>8</l><l>9</l></list></block><block s="reportNewList"><list><l>1</l><l>4</l><l>7</l></list></block><block s="reportNewList"><list><l>2</l><l>5</l><l>8</l></list></block><block s="reportNewList"><list><l>3</l><l>6</l><l>9</l></list></block><block s="reportNewList"><list><l>1</l><l>5</l><l>9</l></list></block><block s="reportNewList"><list><l>3</l><l>5</l><l>7</l></list></block></list></block></block></script></block-definition><block-definition s="status of triple %&apos;triple&apos;" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doReport"><block s="reportMap"><block s="reifyReporter"><autolambda><block s="reportListItem"><l></l><block var="board"/></block></autolambda><list></list></block><block var="triple"/></block></block></script></block-definition><block-definition s="status of all winning triples" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doReport"><block s="reportMap"><block s="reifyReporter"><autolambda><custom-block s="status of triple %l"><l/></custom-block></autolambda><list></list></block><custom-block s="possible winning triples"></custom-block></block></block></script></block-definition><block-definition s="won? %&apos;who&apos;" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doReport"><block s="reportListContainsItem"><custom-block s="status of all winning triples"></custom-block><block s="reportNewList"><list><block var="who"/><block var="who"/><block var="who"/></list></block></block></block></script></block-definition><block-definition s="tied?" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doReport"><block s="reportVariadicEquals"><list><block s="reportFindFirst"><block s="reifyPredicate"><autolambda><block s="reportIsA"><l></l><l><option>number</option></l></block></autolambda><list></list></block><block var="board"/></block><l></l></list></block></block></script></block-definition><block-definition s="move in this square" type="command" category="motion"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doSwitchToCostume"><block var="cpuSymbol"/></block><block s="doReplaceInList"><block var="position number"/><block var="board"/><block var="cpuSymbol"/></block><block s="doSetVar"><l>Player&apos;s turn?</l><block s="reportBoolean"><l><bool>true</bool></l></block></block><block s="doIf"><custom-block s="won? %s"><block var="cpuSymbol"/></custom-block><script><block s="bubble"><block s="reportJoinWords"><list><block var="cpuSymbol"/><l> Won!</l></list></block></block><block s="doSetVar"><l>playing</l><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block></script></block-definition><block-definition s="random free space of board" type="reporter" category="sensing"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doReport"><block s="reportListItem"><l><option>random</option></l><block s="reportKeep"><block s="reifyPredicate"><autolambda><block s="reportVariadicAnd"><list><block s="reportNot"><block s="reportVariadicEquals"><list><l></l><l>X</l></list></block></block><block s="reportNot"><block s="reportVariadicEquals"><list><l></l><l>O</l></list></block></block></list></block></autolambda><list></list></block><block var="board"/></block></block></block></script></block-definition><block-definition s="best empty square" type="reporter" category="sensing"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doReport"><block s="reportFindFirst"><block s="reifyPredicate"><autolambda><block s="reportListContainsItem"><block var="board"/><l></l></block></autolambda><list></list></block><block s="reportNewList"><list><l>5</l><l>1</l><l>3</l><l>7</l><l>9</l><l>2</l><l>4</l><l>6</l><l>8</l></list></block></block></block></script></block-definition><block-definition s="how many %&apos;predicate&apos; in %&apos;list&apos; ?" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%predRing"></input><input type="%l"></input></inputs><script><block s="doReport"><block s="reportListAttribute"><l><option>length</option></l><block s="reportKeep"><block var="predicate"/><block var="list"/></block></block></block></script></block-definition><block-definition s="winning triples for player %&apos;symbol&apos;" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doReport"><block s="reportKeep"><block s="reifyPredicate"><autolambda><block s="reportVariadicAnd"><list><block s="reportVariadicEquals"><list><custom-block s="how many %predRing in %l ?"><block s="reifyPredicate"><autolambda><block s="reportVariadicEquals"><list><l></l><block var="symbol"/></list></block></autolambda><list></list></block><l/></custom-block><l>2</l></list></block><custom-block s="how many %predRing in %l ?"><block s="reifyPredicate"><autolambda><block s="reportIsA"><l></l><l><option>number</option></l></block></autolambda><list></list></block><l/></custom-block></list></block></autolambda><list></list></block><custom-block s="status of all winning triples"></custom-block></block></block></script><scripts><script x="300.10546875" y="238.83333333333331"><block s="reportVariadicEquals"><list><custom-block s="how many %predRing in %l ?"><block var="symbol"/><l/></custom-block><l>2</l></list></block></script><script x="194" y="199.66666666666669"><block s="reportFindFirst"><block s="reifyPredicate"><script></script><list></list></block><custom-block s="status of all winning triples"></custom-block></block></script></scripts></block-definition><block-definition s="winning squares for player %&apos;symbol&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doDeclareVariables"><list><l>list</l></list></block><block s="doSetVar"><l>list</l><block s="reportNewList"><list></list></block></block><block s="doForEach"><l>triple</l><custom-block s="winning triples for player %s"><block var="symbol"/></custom-block><script><block s="doForEach"><l>box</l><block var="triple"/><script><block s="doIf"><block s="reportIsA"><block var="box"/><l><option>number</option></l></block><script><block s="doAddToList"><block var="box"/><block var="list"/></block></script></block></script></block></script></block><block s="doReport"><block var="list"/></block></script><scripts><script x="267" y="254.3333333333332"><block s="reportVariadicAnd"><list><l/><block s="reportNot"><block s="reportVariadicEquals"><list><block var="box"/><block var="symbol"/></list></block></block></list></block></script></scripts></block-definition><block-definition s="next move for computer" type="reporter" category="other"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doIf"><custom-block s="can player %s win now?"><block var="cpuSymbol"/></custom-block><script><block s="doReport"><custom-block s="singular winning square for player %s"><block var="cpuSymbol"/></custom-block></block></script></block><block s="doIfElse"><custom-block s="can player %s win now?"><block var="playerSymbol"/></custom-block><script><block s="doReport"><custom-block s="singular winning square for player %s"><block var="playerSymbol"/></custom-block></block></script><script><block s="doReport"><custom-block s="best empty square"></custom-block></block></script></block></script></block-definition><block-definition s="can player %&apos;symbol&apos; win now?" type="predicate" category="sensing"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doReport"><block s="reportIsA"><block s="reportListItem"><l><option>random</option></l><custom-block s="winning squares for player %s"><block var="symbol"/></custom-block></block><l><option>number</option></l></block></block></script></block-definition><block-definition s="singular winning square for player %&apos;symbol&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doReport"><block s="reportListItem"><l><option>random</option></l><custom-block s="winning squares for player %s"><block var="symbol"/></custom-block></block></block></script><scripts><script x="78" y="145.0333333333333"><block s="reportListItem"><l><option>random</option></l><block s="reportNewList"><list></list></block></block></script></scripts></block-definition><block-definition s="Player procedure" type="command" category="pen"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doIf"><block var="Player&apos;s turn?"/><script><block s="doSwitchToCostume"><block var="playerSymbol"/></block><block s="doReplaceInList"><block var="position number"/><block var="board"/><block var="playerSymbol"/></block><block s="doSetVar"><l>Player&apos;s turn?</l><block s="reportNot"><block var="Player&apos;s turn?"/></block></block><block s="doIf"><custom-block s="won? %s"><block var="playerSymbol"/></custom-block><script><block s="bubble"><block s="reportJoinWords"><list><block var="playerSymbol"/><l> Won!</l></list></block></block><block s="doSetVar"><l>playing</l><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block><block s="doIf"><custom-block s="tied?"></custom-block><script><block s="bubble"><l>Tie game!</l></block><block s="doSetVar"><l>playing</l><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block><block s="doBroadcast"><l>go</l><list><l><option>all</option></l><custom-block s="next move for computer"></custom-block></list></block></script></block></script><scripts><script x="14" y="373.8"><block s="doIf"><block s="reportVariadicAnd"><list><block var="playing"/><block s="reportVariadicEquals"><list><block s="reportAttributeOf"><l><option>costume name</option></l><block s="reportObject"><l><option>myself</option></l></block></block><l></l></list></block></list></block><script></script></block></script></scripts></block-definition><block-definition s="CPU procedure %&apos;square&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doIf"><block s="reportVariadicEquals"><list><block var="square"/><block var="position number"/></list></block><script><custom-block s="move in this square"></custom-block></script></block></script></block-definition><block-definition s="initialize game" type="command" category="pen"><header></header><code></code><translations></translations><inputs></inputs><script><block s="clear"></block><custom-block s="makeBoard"></custom-block><block s="doSetVar"><l>Player&apos;s turn?</l><block s="reportBoolean"><l><bool>true</bool></l></block></block><block s="doSetVar"><l>board</l><block s="reportNumbers"><l>1</l><l>9</l></block></block><block s="doAsk"><l>What symbol would you like to be? (X or O)</l></block><block s="doSetVar"><l>playerSymbol</l><block s="getLastAnswer"></block></block><block s="doSetVar"><l>cpuSymbol</l><custom-block s="oppositeSymbol %s"><block var="playerSymbol"/></custom-block></block><block s="doSetVar"><l>playing</l><block s="reportBoolean"><l><bool>true</bool></l></block></block></script></block-definition><block-definition s="oppositeSymbol %&apos;symbol&apos;" type="reporter" category="variables"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doIf"><block s="reportVariadicEquals"><list><block var="symbol"/><l>X</l></list></block><script><block s="doReport"><l>O</l></block></script></block><block s="doIf"><block s="reportVariadicEquals"><list><block var="symbol"/><l>O</l></list></block><script><block s="doReport"><l>X</l></block></script></block></script></block-definition></blocks><stage name="Stage" width="480" height="360" costume="0" color="255,255,255,1" tempo="60" threadsafe="false" penlog="false" volume="100" pan="0" lines="round" ternary="true" hyperops="true" codify="false" inheritance="false" sublistIDs="false" 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