: GM Juan Manuel Bellón provides an extensive theoretical study on the "chameleon" opening 1. Nc3 .

: You can purchase individual issues or a digital subscription through the Ajedrez21 shop , which includes a collectible PDF download and access to an interactive board for playing through game annotations.

: FM Jorge Guerrero introduces the "Comparison Method," a calculation tool applicable to all phases of the game.

: IM Diego Adla details five essential concepts for rook endings .

: Visit the Peón de Rey project page for full summaries and sample content from the editorial team.