一人死在密闭的七四型坦克内，坦克舱门自内锁住，需要用专门的工具才能卸下。坦克停放基地大门亦从内部锁住，大门钥匙在坦克舱内找到。死者虽然看上去像是自杀，但现场昏暗，死者没有拿手电筒，不合常理。
二重密室解法利用到七四型坦克的构造，但诡计相当小儿科。
神家正成『七四』(2016)
August 17
Archives
- April 2024
- March 2024
- February 2024
- January 2024
- December 2023
- November 2023
- October 2023
- September 2023
- August 2023
- July 2023
- June 2023
- March 2023
- January 2023
- December 2022
- November 2022
- October 2022
- September 2022
- August 2022
- June 2022
- May 2022
- April 2022
- March 2022
- February 2022
- January 2022
- June 2021
- May 2021
- September 2020
- August 2020
- July 2020
- June 2020
- May 2020
- January 2020
- December 2019
- November 2019
- October 2019
- August 2019
- June 2019
- March 2019
- February 2019
- January 2019
- December 2018
- November 2018
- October 2018
- September 2018
- August 2018
- July 2018
- June 2018
- May 2018
- April 2018
- March 2018
- February 2018
- January 2018
- December 2017
- November 2017
- October 2017
- September 2017
- August 2017
- July 2017
- June 2017
- May 2017
- April 2017
- March 2017
- February 2017
- January 2017
- December 2016
- November 2016
- October 2016
- September 2016
- August 2016
- July 2016
- June 2016
- May 2016
- April 2016
- March 2016
- February 2016
- January 2016
- December 2015
- November 2015
- October 2015
- September 2015
- August 2015
- July 2015
- June 2015
- May 2015
- April 2015
- March 2015
- February 2015
- January 2015
- December 2014
- November 2014
- October 2014
- September 2014
- August 2014
- July 2014
- May 2011
- April 2011
- March 2011
- September 2010
- July 2010
- June 2010
- May 2010
- April 2010
- August 2009
- June 2009
- May 2009
- April 2009
- March 2009
- February 2009
- January 2009
- December 2008
- November 2008
- October 2008
- July 2008
- June 2008
- May 2008
- April 2008
- March 2008
- February 2008
- January 2008
- November 2007
- October 2007
- September 2007
- August 2007
- July 2007
- June 2007
- May 2007
- March 2007
- November 2006
- July 2006
- June 2006
- February 2006
- January 2006
- October 2005
- September 2005