PID: 214948 (k7/P7/P7/2P5/2N3K1/2N1b3/1n1nR3/Q7 w - - 0 1)
Anonymous
SEPA, 1942
#2
8 + 4
SOLUTION
SOUND
Tries
1.Qxb2?
threat
2.Qb7#
2.Qb8#
1...Kxa7
2.Qb7#
1...Bf4
2.Qb7#
1...Sb3!
Keys
1.Sb5!
threat
2.Sb6#
1...Bxc5
2.Re8#
1...Sbxc4
2.Qh8#
1...Sdxc4
2.Qh1#
1...Sa4
2.Qh8#
FEATURES
Static
TYPE = THREAT
CHANGED MATES = 0
ADDED MATES = 4
REMOVED MATES = 0
Sets
Tries
Try
Q(A);XS(a)
Threat
DUALS(2)
Vars
K(d);P-FLIGHT,XP(H)::QAR1(A)
B(c);::QAB1(A)
Refutation
S(b);
Actual
S(C);
Threat
S(D)
Vars
B(c);OGATE,XP(F)::R(B)
S(a);OGATE,XS(D)::QAB1(A)
S(b);N_GUARD,XS(D)::QAB(A)
S(a);OGATE::QAB1(A)
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).