| 2026-04-09 | Pole, e.g. |
| 2025-03-04 | Czech, e.g. |
| 2024-09-30 | Balkan native |
| 2024-09-22 | Bulgarian or Bosnian |
| 2024-07-21 | Eastern European |
| 2024-05-26 | Czech or Pole |
| 2023-07-31 | Serb, Slovene or Slovak |
| 2022-04-28 | Pole, e.g. |
| 2022-04-21 | Ukrainian, for one |
| 2021-02-24 | Czech, e.g. |
| 2020-11-29 | ___ Defense (classic chess opening) |
| 2019-12-02 | Many an Eastern European |
| 2019-10-23 | Many a person once trapped behind the Iron Curtain |
| 2019-08-29 | Ukrainian, e.g. |
| 2019-07-25 | Belarusian, e.g. |
| 2019-06-12 | Czech or Pole |
| 2019-04-28 | Macedonian, e.g. |
| 2018-12-17 | Czech or Croat |
| 2018-09-06 | Dweller along the Don |
| 2018-08-02 | Dalmatian or Croatian |
| 2018-06-14 | Pole, for one |
| 2018-01-03 | Balkan native |
| 2017-06-16 | Bulgarian, e.g. |
| 2016-10-18 | Belarussian, e.g. |
| 2016-05-10 | Bosnian, e.g. |
| 2016-02-26 | Pomeranian, e.g. |
| 2015-10-06 | Croat or Serb |
| 2015-04-26 | Pole, e.g. |
| 2014-12-17 | Many a Balkan native |
| 2014-11-03 | Bulgarian or Croat |
| 2014-06-09 | Serb or Pole |
| 2013-12-10 | Czech or Pole |
| 2013-10-01 | Pole or Czech |
| 2013-06-30 | Many a person behind the Iron Curtain |
| 2013-05-15 | Czech, for one |
| 2013-04-06 | Pomeranian, e.g. |
| 2013-03-14 | John Paul II, for one |
| 2012-11-12 | Eastern European |
| 2012-08-28 | Pole, for one |
| 2012-05-07 | Bulgarian or Czech |
| 2012-02-28 | Serbian or Pole |
| 2011-09-27 | Bosnian, e.g. |
| 2011-07-18 | Croat or Serb |
| 2010-12-08 | Pole, for one |
| 2009-03-17 | Czech, e.g., but not a Hungarian |
| 2008-12-23 | Balkan native |
| 2008-06-12 | Dweller along the Danube |
| 2008-01-26 | Pomeranian or Dalmatian |
| 2007-04-16 | Eastern European |
| 2007-04-09 | Czech or Croat |
| 2007-02-24 | Pole classification |
| 2007-01-18 | Dalmatian, e.g. |
| 2006-10-17 | Serb or Pole |
| 2005-06-23 | Czech or Serb |
| 2005-04-19 | Serb or Croat |
| 2004-08-24 | Pole or Bulgarian |
| 2004-03-10 | Montenegro native |
| 2003-12-24 | Montenegrin, e.g. |
| 2003-05-12 | Cyrillic alphabet user |
| 2003-03-19 | Pole, for one |
| 2003-02-14 | Many an old Hapsburg subject |
| 2002-12-01 | Bohemian, e.g. |
| 2002-06-20 | Croat, e.g. |
| 2002-02-19 | Czech or Serb |
| 2002-01-29 | Eastern European |
| 2001-07-23 | Serb or Croat |
| 2001-02-25 | Pole, e.g. |
| 2000-09-09 | Russian, e.g. |
| 2000-07-21 | Czech, e.g. |
| 2000-06-19 | Many a Balkan |
| 2000-04-28 | Pole, e.g. |
| 2000-04-25 | Croat or Bulgar |
| 2000-01-05 | Bulgarian or Croat |
| 1999-07-04 | Pole, e.g. |
| 1999-06-27 | Serb, e.g. |
| 1999-05-10 | Croat, e.g. |
| 1999-02-01 | Pole, e.g. |
| 1999-01-03 | Moravian, e.g. |
| 1998-05-11 | Eastern European |
| 1998-02-17 | East European |
| 1997-12-28 | Moravian, e.g. |
| 1997-12-13 | Pole, e.g. |
| 1997-07-31 | Eastern European |
| 1997-07-09 | Bulgar, e.g. |
| 1996-12-22 | Pole, for example |
| 1996-11-26 | Eastern European |
| 1996-10-08 | Eastern European |
| 1996-02-20 | Bulgarian, e.g. |
| 1996-02-15 | Croat, e.g. |
| 1996-01-22 | Czech or Pole |
| 1995-12-16 | Pole, e.g. |
| 1995-07-13 | Serb or Czech |
| 1995-02-12 | Tito, e.g. |
| 1994-11-22 | Eastern European |
| 1994-11-03 | Bulgar, e.g. |
| 1994-07-14 | Rembrandt's "The Noble _____" |
| 1994-04-08 | Pole, for instance |
| 1993-12-12 | Pole, e.g. |