PID: 68209 (8/1N1K4/4p1N1/5p2/1n1k4/1P1P1Q2/3B2n1/8 w - - 0 1)
Evans, DW
Chess, 1949
#2
7 + 5
SOLUTION
SOUND
Sets
1...f4
2.Qe4#
Tries
1.Kxe6?
1...Sxd3
2.Qd5#
1...Se3
2.Qxe3#
1...Se1
2.Qe3#
1...Sh4
2.Qe3#
1...Sa2
2.Qd5#
1...Sc2
2.Qd5#
1...Sd5
2.Qxd5#
1...Sa6
2.Qd5#
1...Sc6
2.Qd5#
1...f4
2.Qe4#
1...Sf4+!
1.Qe3+?
1...Kd5
2.Se7#
2.Qc5#
2.Qe5#
1...Sxe3!
Keys
1.Se7!
1...Ke5
2.Bc3#
1...Sxd3
2.Sc6#
1...Se3
2.Qxe3#
1...Se1
2.Qe3#
1...Sf4
2.Qe3#
1...Sh4
2.Qe3#
1...Sa2
2.Sc6#
1...Sc2
2.Sc6#
1...Sd5
2.Sc6#
1...Sa6
2.Sc6#
1...Sc6
2.Sxc6#
1...f4
2.Qe4#
1...e5
2.Sxf5#
FEATURES
Static
TYPE = INCOMPLETE_BLOCK
CHANGED MATES = 0
ADDED MATES = 12
REMOVED MATES = 0
Sets
P(d);N_GUARD::QAR1(D)
Tries
Try
K(G);S_FLIGHT,XP(e)
Vars
S(b);N_GUARD,SBLOCK,XP(C)::QAR1(D)
S(a);N_GUARD::QAB1(D),XS(a)
S(a);N_GUARD::QAB1(D)
S(b);N_GUARD::QAR1(D)
S(b);N_GUARD::QAR1(D),XS(b)
P(d);N_GUARD::QAR1(D)
Refutation
S(a);CHECK
Try
Q(D);CHECK
Refutation
S(a);XQ(D)
Actual
S(E);
Vars
K(c);S_FLIGHT::B(A)
S(b);N_GUARD,XP(C)::S(E)
S(a);N_GUARD::QAB1(D),XS(a)
S(a);N_GUARD::QAB1(D)
S(b);N_GUARD::S(E)
S(b);N_GUARD::S(E),XS(b)
P(d);N_GUARD::QAR1(D)
P(e);N_GUARD,SBLOCK::S(E),XP(d)
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).