MESON Chess Problem Database
Problem Display
PID: 10187 (2Br4/3n1Q2/3kP3/8/1NRn2N1/8/6K1/8 w - - 0 1)
Strydom, Jan
South African Chess Player, 1962
#2
7 + 4
SOLUTION
- SOUND
- Sets
- 1...Rxc8
- 2.Qxd7#
- 1...Re8
- 2.Qxd7#
- 1...Rf8
- 2.Qxd7#
- 1...Rg8
- 2.Qxd7#
- 1...Rh8
- 2.Qxd7#
- 1...Sc2
- 2.Rc6#
- 1...Se2
- 2.Rc6#
- 1...Sb3
- 2.Rc6#
- 1...Sf3
- 2.Rc6#
- 1...Sb5
- 2.Rc6#
- 1...Sf5
- 2.Rc6#
- 1...Sc6
- 2.Rxc6#
- 1...Sxe6
- 2.Rc6#
- 1...Sc5
- 2.Rxd4#
- 1...Se5
- 2.Qc7#
- 1...Sb6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sb8
- 2.Qc7#
- 1...Sf8
- 2.Qc7#
- 1...Rxc8
- Tries
- 1.Kf1?
- 1...Rxc8
- 2.Qxd7#
- 1...Sxe6
- 2.Rc6#
- 1...Sc6
- 2.Rxc6#
- 1...Re8
- 2.Qxd7#
- 1...Rg8
- 2.Qxd7#
- 1...Rh8
- 2.Qxd7#
- 1...Sc2
- 2.Rc6#
- 1...Se2
- 2.Rc6#
- 1...Sb3
- 2.Rc6#
- 1...Sf3
- 2.Rc6#
- 1...Sb5
- 2.Rc6#
- 1...Sf5
- 2.Rc6#
- 1...Sc5
- 2.Rxd4#
- 1...Se5
- 2.Qc7#
- 1...Sb6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sb8
- 2.Qc7#
- 1...Sf8
- 2.Qc7#
- 1...Rf8!
- 1...Rxc8
- 1.Kh1?
- 1...Rxc8
- 2.Qxd7#
- 1...Sxe6
- 2.Rc6#
- 1...Sc6
- 2.Rxc6#
- 1...Re8
- 2.Qxd7#
- 1...Rf8
- 2.Qxd7#
- 1...Rg8
- 2.Qxd7#
- 1...Sc2
- 2.Rc6#
- 1...Se2
- 2.Rc6#
- 1...Sb3
- 2.Rc6#
- 1...Sf3
- 2.Rc6#
- 1...Sb5
- 2.Rc6#
- 1...Sf5
- 2.Rc6#
- 1...Sc5
- 2.Rxd4#
- 1...Se5
- 2.Qc7#
- 1...Sb6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sb8
- 2.Qc7#
- 1...Sf8
- 2.Qc7#
- 1...Rh8+!
- 1...Rxc8
- 1.Kf2?
- 1...Rxc8
- 2.Qxd7#
- 1...Sxe6
- 2.Rc6#
- 1...Sc6
- 2.Rxc6#
- 1...Re8
- 2.Qxd7#
- 1...Rg8
- 2.Qxd7#
- 1...Rh8
- 2.Qxd7#
- 1...Sc2
- 2.Rc6#
- 1...Se2
- 2.Rc6#
- 1...Sb3
- 2.Rc6#
- 1...Sf3
- 2.Rc6#
- 1...Sb5
- 2.Rc6#
- 1...Sf5
- 2.Rc6#
- 1...Sc5
- 2.Rxd4#
- 1...Se5
- 2.Qc7#
- 1...Sb6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sb8
- 2.Qc7#
- 1...Sf8
- 2.Qc7#
- 1...Rf8!
- 1...Rxc8
- 1.Kh3?
- 1...Rxc8
- 2.Qxd7#
- 1...Sxe6
- 2.Rc6#
- 1...Sc6
- 2.Rxc6#
- 1...Rf8
- 2.Qxd7#
- 1...Re8
- 2.Qxd7#
- 1...Rg8
- 2.Qxd7#
- 1...Sc2
- 2.Rc6#
- 1...Se2
- 2.Rc6#
- 1...Sb3
- 2.Rc6#
- 1...Sf3
- 2.Rc6#
- 1...Sb5
- 2.Rc6#
- 1...Sf5
- 2.Rc6#
- 1...Sc5
- 2.Rxd4#
- 1...Se5
- 2.Qc7#
- 1...Sb6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sb8
- 2.Qc7#
- 1...Sf8
- 2.Qc7#
- 1...Rh8+!
- 1...Rxc8
- 1.Rc3?
- 1...Rxc8
- 2.Qxd7#
- 1...Sxe6
- 2.Rc6#
- 1...Sc6
- 2.Rxc6#
- 1...Rf8
- 2.Qxd7#
- 1...Re8
- 2.Qxd7#
- 1...Rg8
- 2.Qxd7#
- 1...Rh8
- 2.Qxd7#
- 1...Sc2
- 2.Rc6#
- 1...Se2
- 2.Rc6#
- 1...Sb3
- 2.Rc6#
- 1...Sf3
- 2.Rc6#
- 1...Sb5
- 2.Rc6#
- 1...Sf5
- 2.Rc6#
- 1...Se5
- 2.Qc7#
- 1...Sb6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sb8
- 2.Qc7#
- 1...Sf8
- 2.Qc7#
- 1...Sc5!
- 1...Rxc8
- 1.Rc7?
- 1...Rxc8
- 2.Qxd7#
- 1...Sxe6
- 2.Rc6#
- 1...Sc6
- 2.Rxc6#
- 1...Sc5
- 2.Qf4#
- 2.Qe7#
- 1...Re8
- 2.Qxd7#
- 1...Rf8
- 2.Qxd7#
- 1...Rg8
- 2.Qxd7#
- 1...Rh8
- 2.Qxd7#
- 1...Sc2
- 2.Rc6#
- 1...Se2
- 2.Rc6#
- 1...Sb3
- 2.Rc6#
- 1...Sf3
- 2.Rc6#
- 1...Sb5
- 2.Rc6#
- 1...Sf5
- 2.Rc6#
- 1...Se5
- 2.Qe7#
- 1...Sb6
- 2.Qf4#
- 2.Qe7#
- 1...Sf6
- 2.Qe7#
- 1...Sb8
- 2.Qf4#
- 2.Qe7#
- 1...Sf8
- 2.Qf4#
- 2.Qe7#
- 1...Kxc7!
- 1...Rxc8
- 1.Qh7?
- 1...Rxc8
- 2.Qxd7#
- 1...Sxe6
- 2.Rc6#
- 1...Sc6
- 2.Rxc6#
- 1...Se5
- 2.Qc7#
- 1...Re8
- 2.Qxd7#
- 1...Rf8
- 2.Qxd7#
- 1...Rg8
- 2.Qxd7#
- 1...Rh8
- 2.Qxd7#
- 1...Sc2
- 2.Rc6#
- 1...Se2
- 2.Rc6#
- 1...Sb3
- 2.Rc6#
- 1...Sf3
- 2.Rc6#
- 1...Sb5
- 2.Rc6#
- 1...Sf5
- 2.Rc6#
- 1...Sc5
- 2.Rxd4#
- 1...Sb6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sb8
- 2.Qc7#
- 1...Sf8
- 2.Qc7#
- 1...Kxe6!
- 1...Rxc8
- 1.Kf1?
- Keys
- 1.Qg7!
- 1...Kxe6
- 2.Qf6#
- 1...Rxc8
- 2.Qxd7#
- 1...Sxe6
- 2.Rc6#
- 1...Sc6
- 2.Rxc6#
- 1...Se5
- 2.Qc7#
- 1...Re8
- 2.Qxd7#
- 1...Rf8
- 2.Qxd7#
- 1...Rg8
- 2.Qxd7#
- 1...Rh8
- 2.Qxd7#
- 1...Sc2
- 2.Rc6#
- 1...Se2
- 2.Rc6#
- 1...Sb3
- 2.Rc6#
- 1...Sf3
- 2.Rc6#
- 1...Sb5
- 2.Rc6#
- 1...Sf5
- 2.Rc6#
- 1...Sc5
- 2.Rxd4#
- 1...Sb6
- 2.Qc7#
- 1...Sf6
- 2.Qc7#
- 1...Sb8
- 2.Qc7#
- 1...Sf8
- 2.Qc7#
- 1...Kxe6
- 1.Qg7!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(d);N_GUARD,XB(G)::QAR1(F),XS(c)
- R(d);N_GUARD::QAR1(F),XS(c)
- R(d);N_GUARD,P_PINS(D)::QAR1(F),XS(c)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- S(a);N_GUARD,XP(E)::R1(C)
- S(c);SBLOCK::R(C),XS(a)
- S(c);OGATE::QAB1(F)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- R(d);N_GUARD,XB(G)::QAR1(F),XS(c)
- S(a);N_GUARD,XP(E)::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- R(d);N_GUARD::QAR1(F),XS(c)
- S(a);N_GUARD::R1(C)
- S(c);SBLOCK::R(C),XS(a)
- S(c);OGATE::QAB1(F)
- Refutation
- R(d);P_PINQ(F)
- Try
- K(A);S_FLIGHT
- Vars
- R(d);N_GUARD,XB(G)::QAR1(F),XS(c)
- S(a);N_GUARD,XP(E)::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- R(d);N_GUARD::QAR1(F),XS(c)
- S(a);N_GUARD::R1(C)
- S(c);SBLOCK::R(C),XS(a)
- S(c);OGATE::QAB1(F)
- Refutation
- R(d);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- R(d);N_GUARD,XB(G)::QAR1(F),XS(c)
- S(a);N_GUARD,XP(E)::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- R(d);N_GUARD::QAR1(F),XS(c)
- S(a);N_GUARD::R1(C)
- S(c);SBLOCK::R(C),XS(a)
- S(c);OGATE::QAB1(F)
- Refutation
- R(d);P_PINQ(F)
- Try
- K(A);S_FLIGHT
- Vars
- R(d);N_GUARD,XB(G)::QAR1(F),XS(c)
- S(a);N_GUARD,XP(E)::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- R(d);N_GUARD::QAR1(F),XS(c)
- S(a);N_GUARD::R1(C)
- S(c);SBLOCK::R(C),XS(a)
- S(c);OGATE::QAB1(F)
- Refutation
- R(d);CHECK
- Try
- R(C);
- Vars
- R(d);N_GUARD,XB(G)::QAR1(F),XS(c)
- S(a);N_GUARD,XP(E)::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- R(d);N_GUARD::QAR1(F),XS(c)
- R(d);N_GUARD,P_PINS(D)::QAR1(F),XS(c)
- S(a);N_GUARD::R1(C)
- S(c);OGATE::QAB1(F)
- Refutation
- S(c);
- Try
- R(C);
- Vars
- R(d);N_GUARD,XB(G)::QAR1(F),XS(c)
- S(a);N_GUARD,XP(E)::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- R(d);N_GUARD::QAR1(F),XS(c)
- R(d);N_GUARD,P_PINS(D)::QAR1(F),XS(c)
- S(a);N_GUARD::R1(C)
- S(c);::QAB1(F)
- Refutation
- K(b);P_SPINS(c),S_FLIGHT,XR(C)
- Try
- Q(F);
- Vars
- R(d);N_GUARD,XB(G)::QAR1(F),XS(c)
- S(a);N_GUARD,SBLOCK,XP(E)::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- S(c);OGATE::QAB1(F)
- R(d);N_GUARD::QAR1(F),XS(c)
- R(d);N_GUARD,P_PINS(D)::QAR1(F),XS(c)
- S(a);N_GUARD::R1(C)
- S(c);SBLOCK::R(C),XS(a)
- Refutation
- K(b);P-FLIGHT,P_SPINS(c),XP(E)
- Try
- Actual
- Q(F);
- Vars
- K(b);OGATEB,P-FLIGHT,P_SPINS(c),XP(E)::QAR1(F)
- R(d);N_GUARD,XB(G)::QAR1(F),XS(c)
- S(a);N_GUARD,SBLOCK,XP(E)::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- S(c);OGATE::QAB1(F)
- R(d);N_GUARD::QAR1(F),XS(c)
- S(a);N_GUARD::R1(C)
- S(c);SBLOCK::R(C),XS(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).