PID: 185982 (1N1b4/KPk1p1Rn/5p2/1b4p1/1Q6/8/1Br5/n1R5 w - - 0 1)
Henry, S
Chess, 1958
#2
7 + 9
SOLUTION
SOUND
Sets
1...Bf1
2.Qb6#
1...Be2
2.Qb6#
1...Bd3
2.Qb6#
1...Ba4
2.Qb6#
1...Bc4
2.Qc5#
2.Qb6#
1...Ba6
2.Qb6#
1...Bd7
2.Qb6#
1...Be8
2.Qb6#
1...g4
2.Qf4#
1...f5
2.Be5#
Tries
1.Ba3?
threat
2.Qa5#
2.Qd6#
1...Bd7
2.Qa5#
2.Qb6#
1...Sb3
2.Qd6#
1...Rc5!
1.Rd1?
threat
2.Qa5#
2.Qd6#
1...Rc5
2.Qa5#
1...Rc6
2.Rd7#
1...Bd3
2.Qb6#
1...Bd7
2.Rxd7#
2.Qa5#
2.Qb6#
1...Sb3
2.Qd6#
1...Rd2!
1.Rxc2+?
1...Bc4
2.Rxc4#
2.Qc5#
2.Qb6#
1...Bc6
2.Rxc6#
1...Sxc2!
1.Rxe7+?
1...Bd7
2.Rxd7#
2.Qb6#
1...Bxe7!
1.Qxe7+?
1...Bd7
2.Qxd7#
1...Bxe7!
1.Qd4?
threat
2.Qb6#
1...Rc6
2.Qd7#
1...Bc6
2.Sa6#
1...Rc5!
1.Qg4?
threat
2.Qg3#
1...Bd7
2.Qxd7#
1...f5
2.Be5#
1...Kd6!
1.Qxb5?
threat
2.Qd7#
2.Qb6#
1...Rc6
2.Rxc6#
2.Qxc6#
1...Sf8
2.Qb6#
1...Kd6!
Keys
1.Qd2!
threat
2.Qh2#
1...Be2
2.Qd7#
1...Bc4
2.Qd7#
1...Bc6
2.Sa6#
1...Bd7
2.Qxd7#
1...g4
2.Qf4#
1...f5
2.Be5#
FEATURES
Static
TYPE = THREAT
CHANGED MATES = 2
ADDED MATES = 2
REMOVED MATES = 5
Sets
B(c);OGATE::QAB1(C)
B(c);N_SPINP(g),OGATE::QAB1(C)
P(d);N_GUARD::QAB(C)
P(e);N_GUARD::B(B)
Tries
Try
B(B);
Threat
DUALS(2)
Vars
S(a);::QAB1(C)
Refutation
R(b);
Try
R(A);N_PINR(b)
Threat
DUALS(2)
Vars
R(b);::QAB(C)
R(b);S_CUTB(c)::R1(A)
B(c);OGATE::QAB1(C)
S(a);::QAB1(C)
Refutation
R(b);
Try
R(A);CHECK,XR(b)
Vars
B(c);N_GUARD,P_SPINB(c)::R1(A),XB(c)
Refutation
S(a);XR(A)
Try
R(F);CHECK,XP(g)
Refutation
B(i);XR(F)
Try
Q(C);CHECK,XP(g)
Vars
B(c);N_GUARD,P_SPINB(c)::QAR1(C),XB(c)
Refutation
B(i);P_SPINB(i),XQ(C)
Try
Q(C);
Threat
QAB1(C)
Vars
R(b);S_CUTB(c)::QAR1(C)
B(c);N_GUARD,N_SPINR(b),SBLOCK::S(G)
Refutation
R(b);
Try
Q(C);
Threat
QAB(C)
Vars
B(c);N_GUARD,N_SPINP(g)::QAR1(C),XB(c)
P(e);N_GUARD::B(B)
Refutation
K(f);N_SPINP(g),N_SPINR(b),S_FLIGHT
Try
Q(C);XB(c)
Threat
DUALS(2)
Vars
S(h);::QAB1(C)
Refutation
K(f);N_SPINP(g),N_SPINR(b),S_FLIGHT
Actual
Q(C);
Threat
QAB(C)
Vars
B(c);N_GUARD::QAR1(C)
B(c);N_GUARD,N_SPINR(b)::QAR1(C)
B(c);N_GUARD,N_SPINR(b),SBLOCK::S(G)
B(c);N_GUARD,N_SPINP(g)::QAR1(C),XB(c)
P(d);N_GUARD::QAB(C)
P(e);N_GUARD::B(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).