Contributions to mathematical competitions

In the past I have contributed with original problems for some mathematical competitions

XVII Olimpíada Matemática Rioplatense (2009).

First and fourth problem, level 3. Fifth problem, level 2. First problem, level A.

XXVIII Olimpíada Colombiana de Matemáticas (2009).

Fifth and third problem, nivel superior.

XIII Olimpíada Iberoamericana de Matemáticas (2008).

Fifth problem.

XXXVII Olimpíada Colombiana de Matemáticas (2008).

Second problem, primer nivel.

XII Olimpíada Iberoamericana de Matemáticas (2007).

Second problem.

IX Olimpíada de Matemáticas de Centroamérica y el Caribe (2007).

Second problem.