The six chess players rounded up by a cadre of Kevlar-armored cops in November for being in an Inwood playground unaccompanied by a child had their case thrown out by a Manhattan judge yesterday — because the cops botched the summons.

The officers cited the wrong section of the Parks Department code — charging the men with being in the park after hours, and not obeying the sign that they must be with a child, the judge said.

“Our prayers have been answered!” Yacahudah Harrison, 49, said as he left Criminal Court.

Harrison headed right back to Emerson Playground to play some more. The men had faced up to 90 days in jail and a $1,000 fine.