『Excelでリバーシを作ろう!!　マクロ、VBAを1から学ぶ』内で使用しているコードです。

Excelのマクロ(VBA)で「三目並べ」「マインスイーパー」「リバーシ」を作る解説本です！
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サンプルとして「準備」～「三目並べ」を無料公開しています。

【kindle】

【booth(pdf】

「マインスイーパー」
https://qiita.com/sano192/items/8eee84c6cd86db7d9a43
「リバーシ」
https://qiita.com/sano192/items/a9680a3a09d37aad1a17

「三目並べ 2」

「三目並べ 2」

Sub GameStart()
 
    Range("B2", "D4").ClearContents
    Cells(2, 6) = "黒番"
 
End Sub

「三目並べ 3」

「三目並べ 3」

Sub GameStart()
 
    Range("B2", "D4").ClearContents
    Cells(2, 6) = "黒番"
   
End Sub
 
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
 
    Gyou = Target.Row
    Retu = Target.Column
   
    If 2 <= Gyou And Gyou <= 4 And 2 <= Retu And Retu <= 4 Then
       
        Cells(Gyou, Retu) = "●"
   
    End If
   
End Sub

「三目並べ 4」

「三目並べ 4」

Sub GameStart()
 
    Range("B2", "D4").ClearContents
    Cells(2, 6) = "黒番"
   
End Sub
 
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
 
    Dim Gyou, Retu
 
    Gyou = Target.Row
    Retu = Target.Column
   
    If 2 <= Gyou And Gyou <= 4 And 2 <= Retu And Retu <= 4 Then
   
        If Cells(Gyou, Retu) <> "" Then
       
            Exit Sub
       
        End If
   
        If Cells(2, 6) = "黒番" Then
            Cells(Gyou, Retu) = "●"
            Cells(2, 6) = "白番"
       
        ElseIf Cells(2, 6) = "白番" Then
            Cells(Gyou, Retu) = "○"
            Cells(2, 6) = "黒番"
       
        End If
   
    End If
   
End Sub

「三目並べ 5」

「三目並べ 5」

'ゲーム開始の処理
Sub GameStart()
 
    Range("B2", "D4").ClearContents
    Cells(2, 6) = "黒番"
   
End Sub
 
'セルをクリックしたときの処理
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
 
'    変数の宣言
    Dim Gyou, Retu
 
'    クリックしたセルの行番号 , 列番号
    Gyou = Target.Row
    Retu = Target.Column
   
'    クリックしたセルが盤面の範囲内なら
    If 2 <= Gyou And Gyou <= 4 And 2 <= Retu And Retu <= 4 Then
   
'        セルが空白なら
        If Cells(Gyou, Retu) <> "" Then
'            処理を途中終了
            Exit Sub
       
        End If
       
'        黒番なら
        If Cells(2, 6) = "黒番" Then
            Cells(Gyou, Retu) = "●"
            Cells(2, 6) = "白番"
       
'        白番なら
        ElseIf Cells(2, 6) = "白番" Then
            Cells(Gyou, Retu) = "○"
            Cells(2, 6) = "黒番"
       
        End If
   
    End If
   
End Sub

「三目並べ 6」

「三目並べ 6」

'ゲーム開始の処理
Sub GameStart()
 
    Range("B2", "D4").ClearContents
    Cells(2, 6) = "黒番"
   
End Sub
 
'セルをクリックしたときの処理
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
 
'    変数の宣言
    Dim Gyou, Retu, Result
 
'    クリックしたセルの行番号 , 列番号
    Gyou = Target.Row
    Retu = Target.Column
   
'    クリックしたセルが盤面の範囲内なら
    If 2 <= Gyou And Gyou <= 4 And 2 <= Retu And Retu <= 4 Then
   
'        セルが空白なら
        If Cells(Gyou, Retu) <> "" Then
'            処理を途中終了
            Exit Sub
       
        End If
       
'        黒番なら
        If Cells(2, 6) = "黒番" Then
            Cells(Gyou, Retu) = "●"
            Cells(2, 6) = "白番"
       
'        白番なら
        ElseIf Cells(2, 6) = "白番" Then
            Cells(Gyou, Retu) = "○"
            Cells(2, 6) = "黒番"
       
        End If
   
    End If
   
    Result = Judge
   
    If Result = 1 Then
        Cells(2, 6) = "黒の勝ち"
   
    ElseIf Result = 2 Then
        Cells(2, 6) = "白の勝ち"
   
    ElseIf Result = 3 Then
        Cells(2, 6) = "引き分け"
   
    End If
   
End Sub
 
'勝敗を判定する関数
Function Judge()
 
'    黒が3つ並んでいるか
    If Cells(2, 2) = "●" And Cells(2, 3) = "●" And Cells(2, 4) = "●" Then
        Judge = 1
    ElseIf Cells(3, 2) = "●" And Cells(3, 3) = "●" And Cells(3, 4) = "●" Then
        Judge = 1
    ElseIf Cells(4, 2) = "●" And Cells(4, 3) = "●" And Cells(4, 4) = "●" Then
        Judge = 1
    ElseIf Cells(2, 2) = "●" And Cells(3, 2) = "●" And Cells(4, 2) = "●" Then
        Judge = 1
    ElseIf Cells(2, 3) = "●" And Cells(3, 3) = "●" And Cells(4, 3) = "●" Then
        Judge = 1
    ElseIf Cells(2, 4) = "●" And Cells(3, 4) = "●" And Cells(4, 4) = "●" Then
        Judge = 1
    ElseIf Cells(2, 2) = "●" And Cells(3, 3) = "●" And Cells(4, 4) = "●" Then
        Judge = 1
    ElseIf Cells(2, 4) = "●" And Cells(3, 3) = "●" And Cells(4, 2) = "●" Then
        Judge = 1
   
'    白が3つ並んでいるか
    ElseIf Cells(2, 2) = "○" And Cells(2, 3) = "○" And Cells(2, 4) = "○" Then
        Judge = 2
    ElseIf Cells(3, 2) = "○" And Cells(3, 3) = "○" And Cells(3, 4) = "○" Then
        Judge = 2
    ElseIf Cells(4, 2) = "○" And Cells(4, 3) = "○" And Cells(4, 4) = "○" Then
        Judge = 2
    ElseIf Cells(2, 2) = "○" And Cells(3, 2) = "○" And Cells(4, 2) = "○" Then
        Judge = 2
    ElseIf Cells(2, 3) = "○" And Cells(3, 3) = "○" And Cells(4, 3) = "○" Then
        Judge = 2
    ElseIf Cells(2, 4) = "○" And Cells(3, 4) = "○" And Cells(4, 4) = "○" Then
        Judge = 2
    ElseIf Cells(2, 2) = "○" And Cells(3, 3) = "○" And Cells(4, 4) = "○" Then
        Judge = 2
    ElseIf Cells(2, 4) = "○" And Cells(3, 3) = "○" And Cells(4, 2) = "○" Then
        Judge = 2
       
    End If
   
'    黒または白の勝ちの場合
    If Judge = 1 Or Judge = 2 Then
   
'        途中終了
        Exit Function
       
    End If
   
    Dim Gyou, Retu
 
'    空白マスがあるか確認する
    For Gyou = 2 To 4
        For Retu = 2 To 4
       
            If Cells(Gyou, Retu) = "" Then
                Judge = 4
            End If
       
        Next Retu
    Next Gyou
 
'    全てのマスが埋まっている場合
    If Judge <> 4 Then
        Judge = 3
    End If
 
End Function

「三目並べコード全文」

「三目並べコード全文」

'ゲーム開始の処理
Sub GameStart()
 
    Range("B2", "D4").ClearContents
    Cells(2, 6) = "黒番"
    Cells(1, 1).Select

End Sub
 
'セルをクリックしたときの処理
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
 
'    変数の宣言
    Dim Gyou, Retu, Result
 
'    クリックしたセルの行番号 , 列番号
    Gyou = Target.Row
    Retu = Target.Column
   
'    クリックしたセルが盤面の範囲内なら
    If 2 <= Gyou And Gyou <= 4 And 2 <= Retu And Retu <= 4 Then
   
'        セルが空白なら
        If Cells(Gyou, Retu) <> "" Then
'            処理を途中終了
            Exit Sub
       
        End If
       
'        黒番なら
        If Cells(2, 6) = "黒番" Then
            Cells(Gyou, Retu) = "●"
            Cells(2, 6) = "白番"
       
'        白番なら
        ElseIf Cells(2, 6) = "白番" Then
            Cells(Gyou, Retu) = "○"
            Cells(2, 6) = "黒番"
       
        End If
   
    End If
   
    Result = Judge
   
    If Result = 1 Then
        Cells(2, 6) = "黒の勝ち"
   
    ElseIf Result = 2 Then
        Cells(2, 6) = "白の勝ち"
   
    ElseIf Result = 3 Then
        Cells(2, 6) = "引き分け"
   
    End If
   
End Sub
 
'勝敗を判定する関数
Function Judge()
 
'    黒が3つ並んでいるか
    If Cells(2, 2) = "●" And Cells(2, 3) = "●" And Cells(2, 4) = "●" Then
        Judge = 1
    ElseIf Cells(3, 2) = "●" And Cells(3, 3) = "●" And Cells(3, 4) = "●" Then
        Judge = 1
    ElseIf Cells(4, 2) = "●" And Cells(4, 3) = "●" And Cells(4, 4) = "●" Then
        Judge = 1
    ElseIf Cells(2, 2) = "●" And Cells(3, 2) = "●" And Cells(4, 2) = "●" Then
        Judge = 1
    ElseIf Cells(2, 3) = "●" And Cells(3, 3) = "●" And Cells(4, 3) = "●" Then
        Judge = 1
    ElseIf Cells(2, 4) = "●" And Cells(3, 4) = "●" And Cells(4, 4) = "●" Then
        Judge = 1
    ElseIf Cells(2, 2) = "●" And Cells(3, 3) = "●" And Cells(4, 4) = "●" Then
        Judge = 1
    ElseIf Cells(2, 4) = "●" And Cells(3, 3) = "●" And Cells(4, 2) = "●" Then
        Judge = 1
   
'    白が3つ並んでいるか
    ElseIf Cells(2, 2) = "○" And Cells(2, 3) = "○" And Cells(2, 4) = "○" Then
        Judge = 2
    ElseIf Cells(3, 2) = "○" And Cells(3, 3) = "○" And Cells(3, 4) = "○" Then
        Judge = 2
    ElseIf Cells(4, 2) = "○" And Cells(4, 3) = "○" And Cells(4, 4) = "○" Then
        Judge = 2
    ElseIf Cells(2, 2) = "○" And Cells(3, 2) = "○" And Cells(4, 2) = "○" Then
        Judge = 2
    ElseIf Cells(2, 3) = "○" And Cells(3, 3) = "○" And Cells(4, 3) = "○" Then
        Judge = 2
    ElseIf Cells(2, 4) = "○" And Cells(3, 4) = "○" And Cells(4, 4) = "○" Then
        Judge = 2
    ElseIf Cells(2, 2) = "○" And Cells(3, 3) = "○" And Cells(4, 4) = "○" Then
        Judge = 2
    ElseIf Cells(2, 4) = "○" And Cells(3, 3) = "○" And Cells(4, 2) = "○" Then
        Judge = 2
       
    End If
   
'    黒または白の勝ちの場合
    If Judge = 1 Or Judge = 2 Then
   
'        途中終了
        Exit Function
       
    End If
   
    Dim Gyou, Retu
 
'    空白マスがあるか確認する
    For Gyou = 2 To 4
        For Retu = 2 To 4
       
            If Cells(Gyou, Retu) = "" Then
                Judge = 4
            End If
       
        Next Retu
    Next Gyou
 
'    全てのマスが埋まっている場合
    If Judge <> 4 Then
        Judge = 3
    End If
 
End Function