A young boy is looking at a checkers board with one fist leaning against his head as a partially visible adult sits across the table from him, in a room full of people sitting in chairs around tables.
A boy is in a checkers competition.
The boy may be looking at a checkers board without being in a checkers competition.  For example he may be playing just for fun, or may just be considering buying the board.
exists e1 p1 s1 s2 x1 x2 x3 x4 x5.(exists e3 e2 s3 s4 x6 x7 x8 x9 x10 x11 x12.(in(e2,x8) & of(s4,x10) & in(e3,x12) & around(x12,x7) & n_table(x7) & n_table(x7) & n_chair(x12) & Actor(e3,x11) & v_sit(e3) & (x10 = x11) & n_people(x10) & Theme(s4,x9) & a_full(s4) & (x8 = x9) & n_room(x8) & from(e2,x1) & across(e2,x7) & Actor(e2,x6) & v_sit(e2) & n_adult(x6) & a_visible(s3) & Theme(s3,x6) & r_partially(x6)) & n_male(x1) & n_male(x1) & as(e1,p1) & with(e1,x4) & against(x4,x5) & n_head(x5) & of(x5,x1) & n_leaning(x4) & a_fist(s2) & Theme(s2,x4) & card_eq_1(x4) & at(e1,x2) & n_board(x2) & of(x2,x3) & n_checkers(x3) & Actor(e1,x1) & v_look(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists p1 x1.(exists x2 x3.(in(x1,x2) & n_competition(x2) & of(x2,x3) & n_checkers(x3)) & n_boy(x1))