PID: 276067 (7r/2N2Q2/3p4/1r1q4/1Pk1P2R/1pPNK3/1P6/2R5 w - - 0 1)
Krecko, S
Mat, 1981
#2
10 + 6
SOLUTION
SOUND
Sets
1...Rxb4
2.Qxd5#
2.cxb4#
1...Rb6
2.Qxd5#
1...Rb7
2.Qxd5#
1...Rbb8
2.Qxd5#
1...Ra8
2.exd5#
2.e5#
1...Rhb8
2.exd5#
2.e5#
1...Rc8
2.exd5#
2.e5#
1...Rd8
2.exd5#
2.e5#
1...Re8
2.e5#
1...Rf8
2.exd5#
2.e5#
Tries
1.Sxb5?
threat
2.Sa3#
2.Sxd6#
2.Qxd5#
1...Qxf7
2.Sa3#
2.Sxd6#
1...Qe6
2.Sa3#
2.Sxd6#
1...Rh5
2.Sa3#
2.Sxd6#
1...Rh6
2.Sa3#
2.Qxd5#
1...Ra8
2.Sxd6#
2.Qxd5#
1...Rd8
2.Sa3#
2.Qxd5#
1...Kxb5!
1.Se8?
threat
2.Sxd6#
1...Rxe8
2.e5#
1...Rb6
2.Qxd5#
1...Rh6!
Keys
1.Qf1!
threat
2.Se5#
1...Qxe4+
2.Rxe4#
1...Qxd3+
2.Qxd3#
1...Qd4+
2.cxd4#
1...Qc5+
2.Sxc5#
1...Qg5+
2.Sf4#
1...Rxb4
2.cxb4#
1...Qe5
2.Se1#
2.Sf2#
2.Sf4#
2.Sc5#
2.Sxe5#
FEATURES
Static
TYPE = THREAT
CHANGED MATES = 0
ADDED MATES = 6
REMOVED MATES = 4
Sets
R(c);N_GUARD::QAB1(J),XQ(d)
R(f);N_GUARD,P_PINP(G)::R(H)+P(G)
Tries
Try
S(I);XR(c)
Threat
DUALS(3)
Refutation
K(b);N_SPINQ(d),S_FLIGHT,XS(I)
Try
S(I);
Threat
S(I),XP(e)
Vars
R(f);N_GUARD,P_PINP(G),XS(I)::R(H)+P(G)
R(c);N_GUARD::QAB1(J),XQ(d)
Refutation
R(f);
Actual
Q(J);N_PINQ(d)
Threat
QAB(J)+S(D),DCHECK
Vars
Q(d);CHECK,OGATE,P_SPINQ(d),XP(G)::R(H),XQ(d)
Q(d);CHECK,OGATE,P_SPINQ(d),XS(D)::QAB1(J),XQ(d)
Q(d);CHECK,OGATE::R(A)+P(C),XQ(d)
Q(d);CHECK,N_GUARD::QAB(J)+S(D),XQ(d)
Q(d);CHECK,N_GUARD::QAB(J)+S(D)
R(c);OGATE,XP(F)::R(A)+P(C),XR(c)
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).