PID: 69966 (1Q2r3/2R5/r2n1BPp/4p2K/5k1N/4R3/8/5N2 w - - 0 1)
Peake, JL
Chess, 1950
#2
8 + 6
SOLUTION
SOUND
Sets
1...Rxb8
2.Bxe5#
1...Rc8
2.Bxe5#
1...Rd8
2.Bxe5#
1...Rf8
2.Bxe5#
1...Rg8
2.Bxe5#
1...Rh8
2.Bxe5#
1...Sc4
2.Rxc4#
1...Se4
2.Rf3#
1...Sf5
2.Sg2#
1...Sb7
2.Rc4#
1...Sf7
2.Rc4#
1...Sc8
2.Rc4#
Tries
1.Sg3?
threat
2.Sg2#
2.Rf3#
1...Ra2
2.Rf3#
1...Ra3
2.Sg2#
1...e4
2.Sg2#
1...Kxe3!
1.Rc2?
threat
2.Rf2#
1...Se4
2.Rf3#
1...Ra2!
1.Rc4+?
1...Se4
2.Rf3#
2.Rexe4#
2.Rcxe4#
1...e4
2.Rf3#
1...Sxc4!
1.Rf7?
threat
2.Bxe5#
2.Bg5#
1...Sf5
2.Sg2#
1...e4
2.Ba1#
2.Bb2#
2.Bc3#
2.Bd4#
2.Bg7#
2.Bh8#
1...Sxf7!
1.Qb1?
threat
2.Sg2#
2.Rf3#
1...Ra2
2.Rf3#
1...Ra3
2.Sg2#
1...Se4
2.Rf3#
2.Rxe4#
2.Qxe4#
1...e4!
1.Qb2?
threat
2.Qf2#
2.Qh2#
1...Se4
2.Rf3#
1...Sf5
2.Sg2#
2.Qf2#
1...Ra2!
1.Qb4+?
1...Se4
2.Rf3#
2.Rxe4#
2.Qxe4#
1...e4
2.Rf3#
1...Sc4!
Keys
1.Bg7!
threat
2.Bxh6#
1...Rh8
2.Bxe5#
1...Se4
2.Rf3#
1...Sf5
2.Sg2#
1...Sf7
2.Rc4#
1...e4
2.Rf7#
FEATURES
Static
TYPE = THREAT
CHANGED MATES = 0
ADDED MATES = 1
REMOVED MATES = 8
Sets
R(f);N_GUARD,XQ(H)::B(E),XP(b)
R(f);N_GUARD::B(E),XP(b)
S(d);N_GUARD,S_CUTP(b)::R(G),XS(d)
S(d);SBLOCK::R1(B)
S(d);SBLOCK::S(C)
S(d);N_GUARD,S_CUTP(b)::R(G)
Tries
Try
S(A);
Threat
DUALS(2)
Vars
R(c);::R1(B)
R(c);::S(C)
P(b);::S(C)
Refutation
K(a);S_FLIGHT,XR(B)
Try
R(G);
Threat
R(G)
Vars
S(d);P_SPINP(b),SBLOCK::R1(B)
Refutation
R(c);
Try
R(G);CHECK
Vars
P(b);P_SPINP(b),P_SPINS(d)::R1(B)
Refutation
S(d);P_SPINP(b),XR(G)
Try
R(G);
Threat
DUALS(2)
Vars
S(d);P_SPINP(b),SBLOCK::S(C)
Refutation
S(d);P_SPINP(b),XR(G)
Try
Q(H);
Threat
DUALS(2)
Vars
R(c);::R1(B)
R(c);::S(C)
Refutation
P(b);
Try
Q(H);
Threat
DUALS(2)
Vars
S(d);SBLOCK::R1(B)
Refutation
R(c);
Try
Q(H);CHECK
Vars
P(b);P_SPINP(b)::R1(B)
Refutation
S(d);P_SPINS(d)
Actual
B(E);
Threat
B(E),XP(e)
Vars
R(f);N_GUARD::B(E),XP(b)
S(d);SBLOCK::R1(B)
S(d);SBLOCK::S(C)
S(d);N_GUARD,S_CUTP(b)::R(G)
P(b);S_CUTS(d),S_CUTS(d)::R(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).