November 10th Announced the 2nd Europian Math Tournament in Minsk (Belarus), I'll be there on 1-7 March, 2019.
May 29th The last week (3 days) of lessons in NYUAD, preparation to IMC2018.
May 25th The second week of lessons in NYUAD, preparation to IMC2018.
May 20th A test and two lessons in NYUAD.
May 18th 2018 The first week of lessons in NYUAD, preparation to IMC2018.
August 10th Final problems for year 2017 from Sharygin Geometry Olympiad.
June 8th Qualification problems for year 2017 from Sharygin Geometry Olympiad.
June 2nd 2017 Problems for year 2016 from Sharygin Geometry Olympiad.
February 23d 2016 A new puzzle Timid and Pert-1 in the collection River Crossing Puzzles.
February 16th The solution for the puzzle A Farmer and a Goat-3 is available.
February 6th The solution for the puzzle Missionaries and Cannibals-2 is available.
January18th Problems for year 2008 from Sharygin Geometry Olympiad.
January 16th The solution for the puzzle Jealous Husbands-2 is available.
January 14th A new puzzle Policemen and Refugees-2 in the collection River Crossing Puzzles.
January 12th The solution for the puzzle Thieves with Suitcases-2 is available.
January11th Problems and solutions for year 2008 from Sharygin Geometry Olympiad.
January 8th The solution for the puzzle Policemen and Refugees-1 is available.
January 5th Problems and solutions for year 2009 from Sharygin Geometry Olympiad.
January 4th A new puzzle Thieves with Suitcases-1 in the collection River Crossing Puzzles.
January 2nd 2016 Problems and solutions for year 2010 from Sharygin Geometry Olympiad.
December 28th and 29th Solutions for puzzles A Heavy Chest and A Farmer and a Goat-2 are available.
December 25th Problems of the current Sharygin Geometry Olympiad qualification round. Any high-school student may participate per correspondence. Solutions must be delivered not later than on April 1, 2016.
December 24th A new puzzle Two Families-1 in the collection River Crossing Puzzles.
December 22nd Problems and solutions for year 2011 from Sharygin Geometry Olympiad.
December 21st To the collection of River Crossing Puzzles was added the solution for the puzzle A Farmer and a Dog-2.
December 17th To the collection of River Crossing Puzzles was added the puzzle Thieves with Suitcases.
December 15th Problems and solutions for year 2012 from Sharygin Geometry Olympiad.
December 14th To the collection of River Crossing Puzzles was added the solution for the puzzle Merchants versus Robbers-2.
December 11th To the collection of River Crossing Puzzles was added the solution for the puzzle Old Grandees-1.
December 10th To the collection of River Crossing Puzzles was added the puzzle Policemen and Refugees.
December 6th and 7th To the collection of River Crossing Puzzles were added solutions for puzzles Thieves and a Robber and Torch on a Bridge-1.
December 3d. To the collection of River Crossing Puzzles was added the puzzle Heavy Chest.
December 1st 2015. A bit more information about Sharygin Geometry Olympiad and problems for the year 2013.