PID: 11214 (1r6/8/7B/3N3K/Q1ppp3/2rk1Pb1/P1R3NR/1n1n4 w - - 0 1)
Smith, RP
Chess, 1937
#2
9 + 9
SOLUTION
SOUND
Sets
1...Ra3
2.Qxc4#
1...Rcb3
2.Qxc4#
1...Rb4
2.Sxb4#
1...Ra8
2.Sb4#
1...Rc8
2.Sb4#
1...Rd8
2.Sb4#
1...Re8
2.Sb4#
1...Rf8
2.Sb4#
1...Rg8
2.Sb4#
1...Rh8
2.Sb4#
1...Be1
2.Sxe1#
2.Sgf4#
2.Sdf4#
1...Bf2
2.Sgf4#
2.Sdf4#
1...Bxh2
2.Se1#
1...Bf4
2.Se1#
2.Sgxf4#
2.Sdxf4#
1...Bh4
2.Sgf4#
2.Sdf4#
1...Be5
2.Se1#
1...Bd6
2.Se1#
1...Bc7
2.Se1#
1...Sd2
2.Rxd2#
1...Sa3
2.Rd2#
1...Sf2
2.Se1#
Keys
1.Qe8!
threat
2.Qxe4#
1...Kxc2
2.Se1#
1...Rxe8
2.Sb4#
1...exf3
2.Qg6#
1...Sd2
2.Rxd2#
1...Be5
2.Se1#
1...Sf2
2.Se1#
1...e3
2.Qg6#
2.Qe4#
FEATURES
Static
TYPE = THREAT
CHANGED MATES = 0
ADDED MATES = 2
REMOVED MATES = 13
Sets
R(c);N_GUARD::QAB1(F),XP(f)
R(i);N_GUARD::S(G),XR(i)
R(i);N_GUARD::S(G)
R(i);N_GUARD,P_PINB(I)::S(G)
B(e);N_GUARD,XR(D)::S(C)
B(e);N_GUARD::S(C)
S(a);N_GUARD::R1(B),XS(a)
S(a);N_GUARD::R1(B)
S(b);S_CUTB(e)::S(C)
Actual
Q(F);
Threat
QAB1(F),XP(h)
Vars
K(d);S_FLIGHT,XR(B)::R(D)+S(C),DCHECK
R(i);N_GUARD,XQ(F)::S(G)
P(h);OGATEB,XP(E)::QAB(F)
S(a);N_GUARD::R1(B),XS(a)
B(e);N_GUARD::S(C)
S(b);S_CUTB(e)::S(C)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).