PID: 186644 (4Kb2/n1P5/4k1p1/1N1nP2N/6P1/8/1B4B1/5R2 w - - 0 1)
Henry, S
Chess, 1959
#2
9 + 5
SOLUTION
SOUND
Sets
1...Ba3
2.Sg7#
1...Bb4
2.Sg7#
1...Bc5
2.Sg7#
1...Bd6
2.Sg7#
1...Be7
2.Sg7#
1...Bg7
2.Sxg7#
1...Se3
2.Sf4#
2.Rf6#
1...Sb4
2.Sf4#
2.Rf6#
1...Sf4
2.Sxf4#
1...Sb6
2.Sf4#
2.Rf6#
1...Sf6+
2.Rxf6#
1...Sxc7+
2.Sxc7#
1...Se7
2.Sf4#
2.Rf6#
1...Sxb5
2.c8Q#
2.c8B#
1...Sc6
2.c8Q#
2.c8B#
Tries
1.Rf5?
threat
2.Sd4#
1...Sf6+
2.Rxf6#
1...Sxc7+
2.Sxc7#
1...Sxb5
2.c8Q#
2.c8B#
1...Bc5
2.Sg7#
1...Sc6
2.c8Q#
2.c8B#
1...gxf5!
Keys
1.Re1!
threat
2.Sd4#
1...Sf6+
2.exf6#
1...Sxc7+
2.Sxc7#
1...Sxb5
2.c8Q#
2.c8B#
1...Bc5
2.Sg7#
1...Se3
2.Sf4#
1...Sc6
2.c8Q#
2.c8B#
FEATURES
Static
TYPE = THREAT
CHANGED MATES = 1
ADDED MATES = 1
REMOVED MATES = 6
Sets
B(e);N_GUARD::S(G)
B(e);N_GUARD::S(G),XB(e)
S(a);N_GUARD::S(G),XS(a)
S(a);CHECK,N_GUARD::R1(A),XS(a)
S(a);CHECK,XP(H)::S(E),XS(a)
S(d);N_GUARD,XS(E)::P=Q
S(d);N_GUARD::P=Q
Tries
Try
R(A);
Threat
S(E)
Vars
S(a);CHECK,N_GUARD::R1(A),XS(a)
S(a);CHECK,XP(H)::S(E),XS(a)
S(d);N_GUARD,XS(E)::P=Q
B(e);N_GUARD::S(G)
S(d);N_GUARD::P=Q
Refutation
P(c);XR(A)
Actual
R(A);
Threat
S(E)
Vars
S(a);CHECK,OGATE::R(A)+P(F),XS(a)
S(a);CHECK,XP(H)::S(E),XS(a)
S(d);N_GUARD,XS(E)::P=Q
B(e);N_GUARD::S(G)
S(a);N_GUARD::S(G)
S(d);N_GUARD::P=Q
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).