MESON Chess Problem Database
Problem Display
PID: 53881 (8/1B3K2/8/2Rn4/4k2N/3pP3/b1r4B/2rNR3 w - - 0 1)
Spence, Jack Lee
Chess Life, 1955
#2
8 + 6
SOLUTION
- SOUND
- Sets
- 1...Rf2+
- 2.Sxf2#
- 1...Rc3
- 2.Sf2#
- 1...Rc4
- 2.Sf2#
- 2.Bxd5#
- 1...Rxc5
- 2.Sf2#
- 1...Bb1
- 2.Bxd5#
- 1...d2
- 2.Sf2#
- 1...Rf2+
- Tries
- 1.Rc4+?
- 1...Rxc4
- 2.Sf2#
- 1...Bxc4!
- 1...Rxc4
- 1.Rc7?
- threat
- 2.Re7#
- 1...Rf2+
- 2.Sxf2#
- 1...d2
- 2.Sf2#
- 1...Rc6
- 2.Sf2#
- 1...Rxc7+!
- threat
- 1.Rc8?
- threat
- 2.Re8#
- 1...Rf2+
- 2.Sxf2#
- 1...Rxc8
- 2.Sf2#
- 1...d2
- 2.Sf2#
- 1...Rc6
- 2.Sf2#
- 1...Rc7+!
- threat
- 1.Rc4+?
- Keys
- 1.Rc6!
- threat
- 2.Re6#
- 1...Rf2+
- 2.Sxf2#
- 1...Sxe3+
- 2.Rc4#
- 1...Rxc6
- 2.Sf2#
- 1...d2
- 2.Sf2#
- threat
- 1.Rc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- R(c);CHECK,N_GUARD::S(A),XR(c)
- R(c);N_GUARD::S(A)
- R(c);N_GUARD,XR(F)::S(A)
- B(b);N_GUARD::B(G),XS(f)
- P(d);S_CUTR(c)::S(A)
- Tries
- Try
- R(F);CHECK
- Vars
- R(c);XR(F)::S(A)
- Refutation
- B(b);XR(F)
- Try
- R(F);
- Threat
- R(F)
- Vars
- R(c);CHECK,N_GUARD::S(A),XR(c)
- P(d);S_CUTR(c)::S(A)
- R(c);N_GUARD,N_SPINS(f)::S(A)
- Refutation
- R(c);CHECK,XR(F)
- Try
- R(F);
- Threat
- R(F)
- Vars
- R(c);CHECK,N_GUARD::S(A),XR(c)
- R(c);N_GUARD,XR(F)::S(A)
- P(d);S_CUTR(c)::S(A)
- R(c);N_GUARD,N_SPINS(f)::S(A)
- Refutation
- R(c);CHECK
- Try
- Actual
- R(F);N_PINS(f)
- Threat
- R(F)
- Vars
- R(c);CHECK,N_GUARD::S(A),XR(c)
- S(f);CHECK,P_SPINS(f),XP(D)::B(G)+R(F),DCHECK
- R(c);N_GUARD,XR(F)::S(A)
- P(d);S_CUTR(c)::S(A)
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).