var extexts = new Array(
"1r3rk1/2p1qp1p/p3n1p1/1p6/4p3/1PQ5/PBP2PPP/R4RK1 w - - 0 1_18-63{Qh8#}_s18-54{Qg7+}_e44-54{Nxg7}",
"8/KPr5/2k5/8/8/8/8/8 w - - 0 1_48-56{Ka8}_50-49{Rxb7}",
"8/6k1/b3p3/8/7R/6r1/6Q1/5nK1 w - - 0 1{%HTrzesovski 1965}_31-30{Rg4+}_22-30{Rxg4}_14-30{Qxg4+}",
"KQ6/1P4Pp/1q6/8/8/8/5b2/7k w - - 0 1_57-15{Qh2+}_7-15{Kxh2}_49-57-Q{b8Q+}_41-57{Qxb8+}_56-57{Kxb8}",
"2r2rk1/3q2pp/3Pp3/1pp5/1nb1Pp2/2Q3P1/1B1R1PBP/R5K1 w - - 0 1{%HBacrot-Lautier<br>Paris 2001}_0-48{Ra7}_51-48{Qxa7}_43-51{d7}",
"4kq2/8/1K5R/4N3/3P4/8/8/8 w - - 0 1_47-44{Re6+}_60-59{Kd8}_44-52{Re7}_61-29{Qf4}_s59-52{Kxe7}_e36-46{Ng6+}_s61-52{Qxe7}_e36-42{Nc6+}_41-49{Kb7}_59-52{Kxe7}_36-46{Ng6+}",
"8/8/p4p1k/P1p5/3pP1Pp/3P3P/4K3/8 w - - 0 1_28-36{e5}_s12-21{Kf3}_47-38{Kg5}_28-36{e5}_e45-37{f5-+}_45-36{fxe5}_12-21{Kf3}_47-38{Kg5}_21-28{Ke4}_38-45{Kf6}_28-35{Kd5}_34-26{c4}_35-26{Kxc4}_45-38{Kg5}_26-17{Kb3}_38-29{Kf4}_17-10{Kc2}_29-20{Ke3}_10-3{Kd1}_s30-38{g5}_20-12{Ke2}_38-46{g6}_36-28{e4}_46-54{g7}_28-19{exd3+}_10-9{Kb2}_19-11{d2}_54-62-Q{g8Q}_e11-3-Q{d1Q=}_20-29{Kf4}_3-12{Ke2}_36-28{e4}_19-28{dxe4}_29-28{Kxe4}_12-11{Kd2}_27-19{d3}_30-38{g5}_28-37{Kf5}_11-19{Kxd3}_37-38{Kxg5}_19-28{Ke4+-}",
"2r3k1/1p4b1/5qB1/4p2R/1pr3Q1/8/6PP/3R3K w - - 0 1_3-59{Rd8+}_58-59{Rxd8}_30-26{Qxc4+}_62-61{Kf8}_26-25{Qxb4+}_45-43{Qd6}_39-37{Rf5+}_61-52{Ke7}_37-53{Rf7+}_52-44{Ke6}_25-30{Qg4+}_44-35{Kd5}_53-49{Rxb7}_sea53-54{Rxg7}{}"
);