MESON Chess Problem Database
Problem Display
PID: 18043 (3K4/4N3/3RB3/1N2k1B1/4b1pn/3n1P1q/8/3r4 w - - 0 1)
Sprague, Gordon
Time & Tide, 1952
#2
7 + 7
SOLUTION
- SOUND
- Sets
- 1...Bf5
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...Bg6
- 2.Sc6#
- 1...Bh7
- 2.Sc6#
- 1...Sc1
- 2.f4#
- 1...Se1
- 2.f4#
- 1...Sb2
- 2.f4#
- 1...Sf2
- 2.f4#
- 1...Sb4
- 2.f4#
- 1...Sc5
- 2.f4#
- 1...Sf5
- 2.Sg6#
- 1...Bf5
- Tries
- 1.Bxg4?
- threat
- 2.Re6#
- 1...Bd5
- 2.Rxd5#
- 1...Bf5
- 2.Sc6#
- 1...Sc1
- 2.f4#
- 1...Se1
- 2.f4#
- 1...Sb2
- 2.f4#
- 1...Sf2
- 2.f4#
- 1...Sb4
- 2.f4#
- 1...Sf4
- 2.Bf6#
- 1...Sc5
- 2.f4#
- 1...Sf5
- 2.Sg6#
- 1...Qxg4!
- threat
- 1.Bxg4?
- Keys
- 1.Bf5!
- threat
- 2.Re6#
- 1...Bxf5
- 2.Sc6#
- 1...Sxf5
- 2.Sg6#
- 1...Bd5
- 2.Rxd5#
- 1...Sc1
- 2.f4#
- 1...Se1
- 2.f4#
- 1...Sb2
- 2.f4#
- 1...Sf2
- 2.f4#
- 1...Sb4
- 2.f4#
- 1...Sf4
- 2.Bf6#
- 1...Sc5
- 2.f4#
- threat
- 1.Bf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- B(d);N_GUARD::S(F)
- B(d);N_GUARD::S(F),XB(d)
- S(b);N_GUARD,P_PINR(D)::P(A)
- S(f);N_GUARD,S_CUTB(d)::S(F)
- Tries
- Try
- B(E);XP(e)
- Threat
- R1(D)
- Vars
- B(d);N_GUARD::R1(D),XB(d)
- B(d);N_GUARD::S(F)
- S(b);N_GUARD,P_PINR(D)::P(A)
- S(b);P_PINR(D),SBLOCK::B(C)
- S(f);N_GUARD,S_CUTB(d)::S(F)
- Refutation
- Q(c);XB(E)
- Try
- Actual
- B(E);
- Threat
- R1(D)
- Vars
- B(d);N_GUARD,SBLOCK,XB(E)::S(F)
- S(f);N_GUARD,SBLOCK,XB(E)::S(F)
- B(d);N_GUARD::R1(D),XB(d)
- S(b);N_GUARD,P_PINR(D)::P(A)
- S(b);P_PINR(D),SBLOCK::B(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).