PID: 214940 (3R4/3Npb2/1P2P3/1KNk1q2/8/3p1P1B/3Q3b/8 w - - 0 1)
Anonymous
SEPA, 1942
#2
9 + 6
SOLUTION
SOUND
Sets
1...Qxh3
2.Qxd3#
1...Qxe6
2.Qxd3#
1...Qe5
2.Sf6#
1...Qg5
2.Qxd3#
1...Qh5
2.Qxd3#
1...Be5
2.Sf6#
Tries
1.Bxf5?
threat
2.Qxd3#
1...Kd4
2.Qxd3#
1...Kd6
2.Qxd3#
1...Be5
2.Sf6#
1...Bg1!
1.Qc3?
threat
2.Se5#
2.Sf6#
1...Kd6
2.Se5#
2.Sf6#
2.Sb8#
2.Sf8#
1...Qxe6
2.Sf6#
2.Qxd3#
1...Bxe6
2.Sf6#
1...Bd6
2.Qc4#
1...Qe5
2.Sxe5#
2.Sf6#
1...Qf6
2.Se5#
2.Sxf6#
1...Be5
2.Sxe5#
2.Sf6#
1...Bc7
2.Sf6#
1...Bb8
2.Sf6#
2.Sxb8#
1...Be8!
Keys
1.Sxd3!
threat
2.Sf4#
1...Kd4+
2.S7e5#
1...Kd6+
2.S7c5#
1...Kxe6+
2.S3c5#
1...Qxd3+
2.Qxd3#
1...Qxf3
2.Sf6#
1...Qf4
2.Sb4#
2.Sxf4#
2.S7e5#
2.Sf6#
1...Bf4
2.Sxf4#
FEATURES
Static
TYPE = THREAT
CHANGED MATES = 0
ADDED MATES = 6
REMOVED MATES = 6
Sets
Q(d);N_GUARD,XB(C)::QAR2(A),XP(b)
Q(d);N_GUARD,XP(G)::QAR2(A),XP(b)
Q(d);SBLOCK::R(I)+S(H),DCHECK
Q(d);N_GUARD::QAR2(A),XP(b)
B(a);SBLOCK::R(I)+S(H),DCHECK
Tries
Try
B(C);XQ(d)
Threat
QAR2(A),XP(b)
Vars
K(c);P-FLIGHT::QAR1(A),XP(b)
K(c);P-FLIGHT::QAR(A),XP(b)
B(a);SBLOCK::R(I)+S(H),DCHECK
Refutation
B(a);
Try
Q(A);N_PINP(b)
Threat
DUALS(2)
Vars
B(f);XP(G)::R(I)+S(H),DCHECK
B(a);SBLOCK::QAB1(A)
B(a);::R(I)+S(H),DCHECK
Refutation
B(f);P_PINS(H)
Actual
S(E);XP(b)
Threat
QAR(A)+S(E),DCHECK
Vars
K(c);CHECK,P-FLIGHT::R(I)+S(H)
K(c);CHECK,P_SPINQ(d),S_FLIGHT,XP(G)::S(E)
Q(d);CHECK,OGATE,P_SPINQ(d),XS(E)::QAR2(A),XQ(d)
Q(d);XP(B)::R(I)+S(H),DCHECK
B(a);::QAR(A)+S(E),DCHECK,XB(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).