He confidently played the pawn move c4 expecting an easy win if Black carelessly recaptured with his d pawn. However, we have a Dvoretsky example of widening the beachhead which essentially gives up a pawn to block all entry points of the menacing White Monarch! Note that Black's d6 pawn performs the vital function of controlling the c5 and e5 squares. So Black aloofly places Kb6 and becomes a King pendulum(another term used freely in the Russian's excellent endgame manual)
PHD and exceptional instructor WIM Alexey Root has produced some excellent lessons on KP endings, but I suspect widening the beachhead is too abstract and deep for her k-6 cute kids. Also GM chess instructor and ICC employee Yermolinsky knows that every Russian school boy is much smarter than their American counterparts. Alex is one helluva writer and commentator(despite his contempt for the Dutch Defence) as his Bally's Las Vegas Casino Hotel friend Shabalov. Some real poker studs in the group! Shahade Chess Bitch Fan club!!
Also see if you can calculate the variation which involves mutual/simultaneous queening if White tries to enter via the b1-h7 diagonal.
Sexy American chess lover and writer Louisa Thomas elucidates the necessity of knowing the rudimentary Lucena KP ending.
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