PID: 186627 (B1R2b2/n2N4/2bp3n/8/3k3N/3p1Q2/3P4/2R4K w - - 0 1)
Henry, S
Chess, 1959
#2
8 + 7
SOLUTION
SOUND
Sets
1...Bxf3+
2.Sxf3#
1...Ba4
2.R1c4#
2.R8c4#
2.Qe4#
2.Qd5#
2.Qf2#
2.Qe3#
2.Qf4#
2.Qf6#
1...Be4
2.R1c4#
2.R8c4#
2.Qxe4#
1...Bb5
2.Qe4#
2.Qd5#
2.Qf2#
2.Qe3#
2.Qf4#
2.Qf6#
1...Bd5
2.Qxd5#
1...Bb7
2.R1c4#
2.R8c4#
1...Bxd7
2.Qe4#
2.Qd5#
2.Qe3#
2.Qf4#
2.Qf6#
1...Bxa8
2.R1c4#
2.R8c4#
1...Sg4
2.Sf5#
1...Sf5
2.Sxf5#
1...Sf7
2.Sf5#
1...Sg8
2.Sf5#
1...d5
2.Qe3#
2.Qf4#
Tries
1.Bxc6?
threat
2.Qe4#
2.Qd5#
2.Qf2#
2.Qe3#
2.Qf4#
2.Qf6#
1...Be7
2.Qe4#
2.Qd5#
2.Qf2#
2.Qe3#
2.Qf4#
1...Bg7
2.Qe4#
2.Qd5#
2.Qf2#
2.Qe3#
2.Qf4#
1...Sg4
2.Sf5#
2.Qe4#
2.Qxg4#
2.Qd5#
2.Qf4#
1...Sf5
2.Sxf5#
2.Qe4#
2.Qg4#
2.Qd5#
2.Qf4#
1...Sf7
2.Sf5#
2.Qe4#
2.Qg4#
2.Qd5#
2.Qf2#
2.Qe3#
2.Qf4#
1...Sg8
2.Sf5#
2.Qe4#
2.Qg4#
2.Qd5#
2.Qf2#
2.Qe3#
2.Qf4#
1...d5
2.Qxd5#
2.Qe3#
2.Qf4#
1...Sxc6!
1.R8xc6?
threat
2.R1c4#
2.R6c4#
1...d5
2.Qe3#
2.Qf4#
1...Sxc6!
1.Qxc6?
threat
2.Sf3#
2.Rc4#
2.Qa4#
2.Qe4#
2.Qd5#
2.Qc3#
2.Qc4#
2.Qb6#
1...Sxc8
2.Sf3#
2.Rc4#
2.Qa4#
2.Qe4#
2.Qd5#
2.Qc3#
2.Qc4#
1...d5
2.Qxd5#
1...Sb5
2.Sf3#
2.Rc4#
2.Qe4#
2.Qd5#
2.Qc4#
2.Qb6#
1...Sxc6!
Keys
1.Rb1!
threat
2.Rb4#
1...Bxf3+
2.Sxf3#
1...Kc4
2.Qe4#
1...Bxd7
2.Qe4#
2.Qd5#
2.Qe3#
2.Qf4#
2.Qf6#
1...Bb5
2.Qe4#
2.Qd5#
2.Qf2#
2.Qe3#
2.Qf4#
2.Qf6#
1...Bd5
2.Qxd5#
1...d5
2.Qf4#
FEATURES
Static
TYPE = THREAT
CHANGED MATES = 0
ADDED MATES = 2
REMOVED MATES = 4
Sets
B(c);CHECK,XQ(D)::S(E),XB(c)
B(c);N_GUARD::QAR1(D),XB(c)
S(e);N_GUARD::S(E)
S(e);N_GUARD::S(E),XS(e)
Tries
Try
B(G);N_SPINQ(D),XB(c)
Threat
DUALS(6)
Refutation
S(f);XB(G)
Try
R(H);N_SPINQ(D),XB(c)
Threat
DUALS(2)
Refutation
S(f);XR(H)
Try
Q(D);N_SPINQ(D),XB(c)
Threat
DUALS(8)
Vars
P(d);::QAR1(D),XP(d)
Refutation
S(f);XQ(D)
Actual
R(A);
Threat
R(A)
Vars
B(c);CHECK,XQ(D)::S(E),XB(c)
K(b);P-FLIGHT,P_SPINB(c)::QAR2(D)
B(c);N_GUARD::QAR1(D),XB(c)
P(d);N_PINQ(D),SBLOCK::QAR2(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).