PID: 278865 (K5n1/QP2B2q/1pRb1R2/4k1N1/n1P5/1N6/6b1/1B6 w - - 0 1)
Bencun, D
Mat, 1982
#2
10 + 7
SOLUTION
SOUND
Sets
1...Qe4
2.Sf7#
1...Qf5
2.Rxf5#
1...Qh1
2.Sf7#
2.Rf5#
1...Qh2
2.Sf7#
2.Rf5#
1...Qh3
2.Sf7#
1...Qh4
2.Sf7#
2.Rf5#
1...Qh5
2.Rf5#
1...Qh6
2.Sf7#
2.Rf5#
1...Qxe7
2.Rf5#
1...Qf7
2.Sxf7#
1...Qg7
2.Rf5#
1...Qh8
2.Sf7#
2.Rf5#
1...Bf1
2.Sf3#
1...Bf3
2.Sxf3#
1...Bh3
2.Sf3#
1...Ba3
2.Rce6#
1...Bb4
2.Rce6#
1...Bc5
2.Rce6#
1...Bc7
2.Rce6#
1...Bxe7
2.Rce6#
1...Bb8
2.Rce6#
2.Qxb8#
1...Sc5
2.Qa1#
1...Sxf6
2.Bxd6#
1...b5
2.Qd4#
Tries
1.Qb8?
threat
2.Qxd6#
1...Qxe7
2.Rf5#
1...Bxb8
2.Rce6#
1...Bc7
2.Rce6#
2.Qxc7#
1...Qd3!
Keys
1.b8S!
threat
2.Sd7#
1...Bxc6+
2.Sxc6#
1...Qxe7
2.Rf5#
1...Bxb8
2.Qxb8#
1...Sxf6
2.Bxd6#
1...Qf5
2.Rxf5#
1...Qh3
2.Sf7#
1...Bh3
2.Sf3#
1...Sc5
2.Qa1#
FEATURES
Static
TYPE = THREAT
CHANGED MATES = 0
ADDED MATES = 2
REMOVED MATES = 12
Sets
Q(f);N_GUARD::S(D)
Q(f);N_GUARD::R1(F),XQ(f)
Q(f);N_GUARD::R1(F)
Q(f);N_GUARD,XB(I)::R1(F)
Q(f);N_GUARD::S(D),XQ(f)
B(a);N_GUARD::S(D)
B(a);N_GUARD::S(D),XB(a)
B(e);OGATE::R1(E)
B(e);OGATE,XB(I)::R1(E)
S(b);OGATE::QAB(G)
S(g);SBLOCK,XR(F)::B(I),XB(e)
P(d);OGATE::QAB1(G)
Tries
Try
Q(G);P_PINB(e)
Threat
QAB1(G),XB(e)
Vars
Q(f);N_GUARD,XB(I)::R1(F)
B(e);N_SPINB(e),OGATE,XQ(G)::R1(E)
Refutation
Q(f);
Actual
P(H);P_SPINR(E)
Threat
S(H)
Vars
B(a);CHECK,XR(E)::S(H),XB(a)
Q(f);N_GUARD,XB(I)::R1(F)
B(e);OGATE,XS(H)::QAB(G),XB(e)
S(g);SBLOCK,XR(F)::B(I),XB(e)
Q(f);N_GUARD::R1(F),XQ(f)
Q(f);N_GUARD::S(D)
B(a);N_GUARD,N_PINR(E)::S(D)
S(b);OGATE::QAB(G)
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).