MESON Chess Problem Database
Problem Display
PID: 51476 (6BB/4Q1rp/6pq/1P4p1/b3p2b/Nr4PP/k4P2/1R2K2R w K - 0 1)
Rendall, JL
The Guardian, 1961
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxe7
- 2.Ra1#
- 1...Rf7
- 2.Ra1#
- 1...Rxg8
- 2.Ra1#
- 1...Bxb5
- 2.Bxb3#
- 1...Rxe7
- Tries
- 1.Qf6?
- threat
- 2.Ra1#
- 2.Qa1#
- 2.Qb2#
- 1...Rxg8
- 2.Ra1#
- 2.Qa1#
- 1...Rf7
- 2.Ra1#
- 2.Qa1#
- 1...Kxa3!
- threat
- 1.Qe5?
- threat
- 2.Ra1#
- 2.Qa1#
- 2.Qb2#
- 1...Rxg8
- 2.Ra1#
- 2.Qa1#
- 1...Rf7
- 2.Ra1#
- 2.Qa1#
- 1...Kxa3!
- threat
- 1.Qf6?
- Keys
- 1.Rh2!
- threat
- 2.f3#
- 2.f4#
- 1...Rxe7
- 2.Ra1#
- 1...Rxg8
- 2.Ra1#
- 1...Bxb5
- 2.Bxb3#
- 1...Bxg3
- 2.fxg3#
- 1...Qh5
- 2.f3#
- 1...Rf7
- 2.Ra1#
- 1...e3
- 2.fxe3#
- 1...g4
- 2.f4#
- threat
- 1.Rh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- R(i);XQ(I)::R1(A)
- R(i);N_SPINR(b)::R1(A)
- R(i);N_SPINR(b),XB(J)::R1(A)
- B(c);N_GUARD,XP(H)::B(J),XR(b)
- Tries
- Try
- Q(I);
- Threat
- DUALS(3)
- Refutation
- K(a);N_SPINR(b),P-FLIGHT,XS(E)
- Try
- Q(I);
- Threat
- DUALS(3)
- Refutation
- K(a);N_SPINR(b),P-FLIGHT,XS(E)
- Try
- Actual
- R(C);
- Threat
- DUALS(2)
- Vars
- R(i);XQ(I)::R1(A)
- R(i);N_SPINR(b),XB(J)::R1(A)
- B(c);N_GUARD,XP(H)::B(J),XR(b)
- B(e);OGATE,P_PINP(D),XP(F)::R(C)+P(D),XB(e)
- Q(h);::R(C)+P(D)
- R(i);N_SPINR(b)::R1(A)
- P(d);OGATE::R(C)+P(D),XP(d)
- P(f);::R(C)+P(D)
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).