PID: 64266 (1N3Kn1/2n1p2N/3pk3/4p3/2R3p1/8/8/1B5Q w - - 0 1)
Evans, D
Chess, 1946
#2
6 + 7
SOLUTION
SOUND
Sets
1...Sf6
2.Sg5#
1...e4
2.Qxe4#
1...d5
2.Rc6#
Tries
1.Kg7?
threat
2.Sg5#
2.Sf8#
1...e4
2.Qxe4#
1...d5
2.Rc6#
1...Se8+!
1.Rd4?
1...exd4
2.Qe4#
1...e4
2.Qxe4#
1...Sb5
2.Qd5#
1...Sd5
2.Qxd5#
1...Sa6
2.Qd5#
1...Sa8
2.Qd5#
1...Se8
2.Qd5#
1...Sf6
2.Sg5#
1...Sh6
2.Qxh6#
1...g3
2.Qh3#
1...d5!
1.Rf4?
threat
2.Sg5#
2.Bf5#
1...exf4
2.Qe4#
1...e4
2.Qxe4#
1...Sh6
2.Sg5#
1...d5!
1.Rxc7?
1...e4
2.Qxe4#
1...d5
2.Rc6#
1...Sf6
2.Sg5#
2.Rxe7#
1...Sh6
2.Rxe7#
1...g3!
1.Qf3?
threat
2.Sg5#
2.Bf5#
2.Qf7#
1...e4
2.Qxe4#
1...d5
2.Rc6#
1...Sf6
2.Sg5#
2.Bf5#
1...Sh6
2.Sg5#
1...gxf3!
Keys
1.Rc5!
1...dxc5
2.Qc6#
1...d5
2.Rc6#
1...Sb5
2.Qd5#
1...Sd5
2.Qxd5#
1...Sa6
2.Qd5#
1...Sa8
2.Qd5#
1...Se8
2.Qd5#
1...Sf6
2.Sg5#
1...Sh6
2.Qxh6#
1...g3
2.Qh3#
1...e4
2.Qxe4#
FEATURES
Static
TYPE = INCOMPLETE_BLOCK
CHANGED MATES = 0
ADDED MATES = 8
REMOVED MATES = 0
Sets
S(g);SBLOCK::S(D)
P(b);OGATEB::QAR2(B),XP(b)
P(c);OGATEB::R(C)
Tries
Try
K(F);S_FLIGHT
Threat
DUALS(2)
Vars
P(b);OGATEB::QAR2(B),XP(b)
P(c);OGATEB::R(C)
Refutation
S(e);CHECK
Try
R(C);
Vars
P(b);OGATEB,XR(C)::QAR2(B)
P(b);OGATEB::QAR2(B),XP(b)
S(e);N_GUARD::QAB1(B)
S(e);N_GUARD::QAB1(B),XS(e)
S(g);SBLOCK::S(D)
S(g);N_GUARD::QAR(B),XS(g)
P(a);OGATEB::QAB(B)
Refutation
P(c);
Try
R(C);
Threat
DUALS(2)
Vars
P(b);OGATEB,XR(C)::QAR2(B)
P(b);OGATEB::QAR2(B),XP(b)
S(g);::S(D)
Refutation
P(c);
Try
R(C);XS(e)
Vars
P(b);OGATEB::QAR2(B),XP(b)
P(c);OGATEB::R(C)
S(g);N_GUARD::R1(C),XP(f)
Refutation
P(a);
Try
Q(B);
Threat
DUALS(3)
Vars
P(b);OGATEB::QAR2(B),XP(b)
P(c);OGATEB::R(C)
S(g);::S(D)
Refutation
P(a);XQ(B)
Actual
R(C);
Vars
P(c);OGATEB,XR(C)::QAR2(B)
P(c);OGATEB::R(C)
S(e);N_GUARD::QAB1(B)
S(e);N_GUARD::QAB1(B),XS(e)
S(g);SBLOCK::S(D)
S(g);N_GUARD::QAR(B),XS(g)
P(a);OGATEB::QAB(B)
P(b);OGATEB::QAR2(B),XP(b)
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).