PID: 11230 (1Q6/K5b1/3B4/p6b/k2p1R2/6r1/6rq/N2N3B w - - 0 1)
Wyse, WE
Chess, 1937
#2
7 + 8
SOLUTION
SOUND
Sets
1...Rg1
2.Bc6#
1...Ra2
2.Bc6#
1...Rd2
2.Bc6#
1...Re2
2.Bc6#
1...Rf2
2.Bc6#
1...Rb3
2.Qxb3#
1...Rc3
2.Sxc3#
1...Rg4
2.Sc3#
2.Qb3#
1...Rg5
2.Sc3#
2.Qb3#
1...Rg6
2.Sc3#
2.Qb3#
2.Qe8#
1...Bxd1
2.Qe8#
1...Be2
2.Sb2#
1...Bf3
2.Sc3#
2.Qb3#
1...Be8
2.Qxe8#
1...Bh6
2.Rxd4#
1...Bf8
2.Rxd4#
Tries
1.Bxg2?
threat
2.Sb2#
2.Bc6#
1...Rxg2
2.Sc3#
2.Qb3#
1...Bxd1
2.Bc6#
2.Qe8#
1...Qh1
2.Sb2#
1...Rb3
2.Qxb3#
1...Rc3
2.Sb2#
2.Sxc3#
1...Rf3
2.Sb2#
1...Rg5
2.Sb2#
2.Sc3#
2.Qb3#
1...Be2
2.Sb2#
1...Bf3
2.Sb2#
2.Sc3#
2.Qb3#
1...Be8
2.Sb2#
2.Qxe8#
1...Qxg2!
Keys
1.Rf2!
threat
2.Sb2#
1...Rxf2
2.Bc6#
1...Bxd1
2.Qe8#
1...Rb3
2.Qxb3#
1...d3
2.Qb3#
FEATURES
Static
TYPE = THREAT
CHANGED MATES = 0
ADDED MATES = 1
REMOVED MATES = 9
Sets
R(a);OGATE::B(C)
R(c);N_GUARD::QAB1(G),XR(c)
R(c);N_GUARD::S(B),XR(c)
B(g);N_GUARD,XS(B)::QAB(G)
B(g);S_CUTR(a)::S(B)
B(g);N_GUARD::QAB(G),XB(g)
B(h);N_GUARD::R(D),XP(e)
Tries
Try
B(C);XR(a)
Threat
DUALS(2)
Vars
Q(b);::S(B)
R(c);N_GUARD::QAB1(G),XR(c)
R(c);::S(B)
B(g);::S(B)
Refutation
Q(b);XB(C)
Actual
R(D);N_PINP(e)
Threat
S(B)
Vars
R(a);OGATE,XR(D)::B(C)
B(g);N_GUARD,XS(B)::QAB(G)
R(c);N_GUARD::QAB1(G),XR(c)
P(e);S_CUTR(c)::QAB1(G)
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).