MESON Chess Problem Database
Problem Display
PID: 51295 (4k3/4p2N/p3n3/B1P1N1p1/6P1/8/1K1R1Rrp/7Q w - - 0 1)
Andrade, Barry Jack da Costa
Manchester Guardian, 1956
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Qc6#
- 1...Rxf2
- 2.Qc6#
- 1...Rg3
- 2.Qc6#
- 1...Rxg4
- 2.Qc6#
- 1...Sd4
- 2.Rf8#
- 1...Sf4
- 2.Rd8#
- 1...Sxc5
- 2.Rd8#
- 2.Rf8#
- 1...Sc7
- 2.Rf8#
- 1...Sg7
- 2.Rd8#
- 2.Rf8#
- 1...Sd8
- 2.Rxd8#
- 2.Rf8#
- 1...Sf8
- 2.Rd8#
- 2.Rxf8#
- 1...Rg1
- Tries
- 1.Ka1?
- 1...Rxf2
- 2.Qc6#
- 1...Rxg4
- 2.Qc6#
- 1...Sxc5
- 2.Rd8#
- 2.Rf8#
- 1...Rg3
- 2.Qc6#
- 1...Sd4
- 2.Rf8#
- 1...Sf4
- 2.Rd8#
- 1...Sc7
- 2.Rf8#
- 1...Sg7
- 2.Rd8#
- 2.Rf8#
- 1...Sd8
- 2.Rxd8#
- 2.Rf8#
- 1...Sf8
- 2.Rd8#
- 2.Rxf8#
- 1...Rg1+!
- 1...Rxf2
- 1.Kb1?
- 1...Rxf2
- 2.Qc6#
- 1...Rxg4
- 2.Qc6#
- 1...Sxc5
- 2.Rd8#
- 2.Rf8#
- 1...Rg3
- 2.Qc6#
- 1...Sd4
- 2.Rf8#
- 1...Sf4
- 2.Rd8#
- 1...Sc7
- 2.Rf8#
- 1...Sg7
- 2.Rd8#
- 2.Rf8#
- 1...Sd8
- 2.Rxd8#
- 2.Rf8#
- 1...Sf8
- 2.Rd8#
- 2.Rxf8#
- 1...Rg1+!
- 1...Rxf2
- 1.Kc1?
- 1...Rxf2
- 2.Qc6#
- 1...Rxg4
- 2.Qc6#
- 1...Sxc5
- 2.Rd8#
- 2.Rf8#
- 1...Rg3
- 2.Qc6#
- 1...Sd4
- 2.Rf8#
- 1...Sf4
- 2.Rd8#
- 1...Sc7
- 2.Rf8#
- 1...Sg7
- 2.Rd8#
- 2.Rf8#
- 1...Sd8
- 2.Rxd8#
- 2.Rf8#
- 1...Sf8
- 2.Rd8#
- 2.Rxf8#
- 1...Rg1+!
- 1...Rxf2
- 1.Kc2?
- 1...Rxf2
- 2.Qc6#
- 1...Rxg4
- 2.Qc6#
- 1...Sxc5
- 2.Rd8#
- 2.Rf8#
- 1...Rg1
- 2.Qc6#
- 1...Rg3
- 2.Qc6#
- 1...Sf4
- 2.Rd8#
- 1...Sc7
- 2.Rf8#
- 1...Sg7
- 2.Rd8#
- 2.Rf8#
- 1...Sd8
- 2.Rxd8#
- 2.Rf8#
- 1...Sf8
- 2.Rd8#
- 2.Rxf8#
- 1...Sd4+!
- 1...Rxf2
- 1.Ka3?
- 1...Rxf2
- 2.Qc6#
- 1...Rxg4
- 2.Qc6#
- 1...Sxc5
- 2.Rd8#
- 2.Rf8#
- 1...Rg1
- 2.Qc6#
- 1...Sd4
- 2.Rf8#
- 1...Sf4
- 2.Rd8#
- 1...Sc7
- 2.Rf8#
- 1...Sg7
- 2.Rd8#
- 2.Rf8#
- 1...Sd8
- 2.Rxd8#
- 2.Rf8#
- 1...Sf8
- 2.Rd8#
- 2.Rxf8#
- 1...Rg3+!
- 1...Rxf2
- 1.Kc3?
- 1...Rxf2
- 2.Qc6#
- 1...Rxg4
- 2.Qc6#
- 1...Sxc5
- 2.Rd8#
- 2.Rf8#
- 1...Rg1
- 2.Qc6#
- 1...Sd4
- 2.Rf8#
- 1...Sf4
- 2.Rd8#
- 1...Sc7
- 2.Rf8#
- 1...Sg7
- 2.Rd8#
- 2.Rf8#
- 1...Sd8
- 2.Rxd8#
- 2.Rf8#
- 1...Sf8
- 2.Rd8#
- 2.Rxf8#
- 1...Rg3+!
- 1...Rxf2
- 1.Bb6?
- 1...Rxf2
- 2.Qc6#
- 1...Rxg4
- 2.Qc6#
- 1...Sxc5
- 2.Rd8#
- 2.Rf8#
- 1...Sd4
- 2.Rf8#
- 1...Rg1
- 2.Qc6#
- 1...Rg3
- 2.Qc6#
- 1...Sf4
- 2.Rd8#
- 1...Sc7
- 2.Rf8#
- 1...Sg7
- 2.Rd8#
- 2.Rf8#
- 1...Sd8
- 2.Rxd8#
- 2.Rf8#
- 1...Sf8
- 2.Rd8#
- 2.Rxf8#
- 1...a5!
- 1...Rxf2
- 1.Bc7?
- 1...Rxf2
- 2.Qc6#
- 1...Rxg4
- 2.Qc6#
- 1...Sxc5
- 2.Rd8#
- 2.Rf8#
- 1...Sxc7
- 2.Rf8#
- 1...Rg1
- 2.Qc6#
- 1...Rg3
- 2.Qc6#
- 1...Sd4
- 2.Rf8#
- 1...Sf4
- 2.Rd8#
- 1...Sg7
- 2.Rd8#
- 2.Rf8#
- 1...Sd8
- 2.Rxd8#
- 2.Rf8#
- 1...Sf8
- 2.Rd8#
- 2.Rxf8#
- 1...a5!
- 1...Rxf2
- 1.Rc2?
- 1...Rxf2
- 2.Qc6#
- 1...Rxg4
- 2.Qc6#
- 1...Sxc5
- 2.Rf8#
- 1...Sc7
- 2.Rf8#
- 1...Rg1
- 2.Qc6#
- 1...Rg3
- 2.Qc6#
- 1...Sd4
- 2.Rf8#
- 1...Sg7
- 2.Rf8#
- 1...Sd8
- 2.Rf8#
- 1...Sf8
- 2.Rxf8#
- 1...Sf4!
- 1...Rxf2
- 1.Rde2?
- 1...Rxf2
- 2.Qc6#
- 1...Rxg4
- 2.Qc6#
- 1...Sxc5
- 2.Rf8#
- 1...Sc7
- 2.Rf8#
- 1...Rg1
- 2.Qc6#
- 1...Rg3
- 2.Qc6#
- 1...Sd4
- 2.Rf8#
- 1...Sg7
- 2.Rf8#
- 1...Sd8
- 2.Rf8#
- 1...Sf8
- 2.Rxf8#
- 1...Sf4!
- 1...Rxf2
- 1.Rf5?
- 1...Rxg4
- 2.Qc6#
- 1...Sxc5
- 2.Rf8#
- 1...Sd4
- 2.Rf8#
- 1...Rg1
- 2.Qc6#
- 1...Re2
- 2.Qc6#
- 1...Rf2
- 2.Qc6#
- 1...Rg3
- 2.Qc6#
- 1...Sf4
- 2.Rf8#
- 1...Sc7
- 2.Rf8#
- 1...Sg7
- 2.Rf8#
- 1...Sd8
- 2.Rf8#
- 1...Sf8
- 2.Rxf8#
- 1...Rxd2+!
- 1...Rxg4
- 1.Rf7?
- 1...Rxg4
- 2.Qc6#
- 1...Sxc5
- 2.Rf8#
- 1...Sd4
- 2.Rf8#
- 1...Rg1
- 2.Qc6#
- 1...Re2
- 2.Qc6#
- 1...Rf2
- 2.Qc6#
- 1...Rg3
- 2.Qc6#
- 1...Sf4
- 2.Rf8#
- 1...Sc7
- 2.Rf8#
- 1...Sg7
- 2.Rf8#
- 1...Sd8
- 2.Rf8#
- 1...Sf8
- 2.Rxf8#
- 1...Rxd2+!
- 1...Rxg4
- 1.Qa1?
- threat
- 2.Qa4#
- 1...Sxc5
- 2.Rd8#
- 2.Rf8#
- 1...Sd4
- 2.Rf8#
- 1...Sc7
- 2.Rf8#
- 1...Sd8
- 2.Rxd8#
- 2.Rf8#
- 1...Sf8
- 2.Rd8#
- 2.Rxf8#
- 1...Rxg4!
- threat
- 1.Qb1?
- threat
- 2.Qg6#
- 1...Sf4
- 2.Rd8#
- 1...Sd8
- 2.Rxd8#
- 2.Rf8#
- 1...Sf8
- 2.Rd8#
- 2.Rxf8#
- 1...Rxf2!
- threat
- 1.Qd1?
- threat
- 2.Qa4#
- 1...Sxc5
- 2.Rd8#
- 2.Rf8#
- 1...Sd4
- 2.Rf8#
- 1...Sc7
- 2.Rd8#
- 2.Rf8#
- 1...Sd8
- 2.Rxd8#
- 2.Rf8#
- 1...Sf8
- 2.Rd8#
- 2.Rxf8#
- 1...Rxg4!
- threat
- 1.Ka1?
- Keys
- 1.Ka2!
- 1...Rxf2
- 2.Qc6#
- 1...Rxg4
- 2.Qc6#
- 1...Sxc5
- 2.Rd8#
- 2.Rf8#
- 1...Rg1
- 2.Qc6#
- 1...Rg3
- 2.Qc6#
- 1...Sd4
- 2.Rf8#
- 1...Sf4
- 2.Rd8#
- 1...Sc7
- 2.Rf8#
- 1...Sg7
- 2.Rd8#
- 2.Rf8#
- 1...Sd8
- 2.Rxd8#
- 2.Rf8#
- 1...Sf8
- 2.Rd8#
- 2.Rxf8#
- 1...Rxf2
- 1.Ka2!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(a);OGATE::QAB(A)
- R(a);OGATE,P_PINR(C),XR(D)::QAB(A)
- R(a);OGATE,XP(E)::QAB(A)
- S(e);N_GUARD::R1(D)
- S(e);N_GUARD::R1(C)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- R(a);OGATE,XR(D)::QAB(A)
- R(a);OGATE,XP(E)::QAB(A)
- R(a);OGATE::QAB(A)
- S(e);N_GUARD::R1(D)
- S(e);N_GUARD::R1(C)
- Refutation
- R(a);CHECK
- Try
- K(B);P-FLIGHT
- Vars
- R(a);OGATE,XR(D)::QAB(A)
- R(a);OGATE,XP(E)::QAB(A)
- R(a);OGATE::QAB(A)
- S(e);N_GUARD::R1(D)
- S(e);N_GUARD::R1(C)
- Refutation
- R(a);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- R(a);OGATE,XR(D)::QAB(A)
- R(a);OGATE,XP(E)::QAB(A)
- R(a);OGATE::QAB(A)
- S(e);N_GUARD::R1(D)
- S(e);N_GUARD::R1(C)
- Refutation
- R(a);CHECK
- Try
- K(B);P-FLIGHT
- Vars
- R(a);OGATE,P_PINR(C),XR(D)::QAB(A)
- R(a);OGATE,XP(E)::QAB(A)
- R(a);OGATE::QAB(A)
- S(e);N_GUARD::R1(C)
- S(e);N_GUARD::R1(D)
- Refutation
- S(e);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- R(a);OGATE,XR(D)::QAB(A)
- R(a);OGATE,XP(E)::QAB(A)
- R(a);OGATE::QAB(A)
- S(e);N_GUARD::R1(D)
- S(e);N_GUARD::R1(C)
- Refutation
- R(a);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- R(a);OGATE,XR(D)::QAB(A)
- R(a);OGATE,XP(E)::QAB(A)
- R(a);OGATE::QAB(A)
- S(e);N_GUARD::R1(D)
- S(e);N_GUARD::R1(C)
- Refutation
- R(a);CHECK
- Try
- B(F);
- Vars
- R(a);OGATE,P_PINR(C),XR(D)::QAB(A)
- R(a);OGATE,XP(E)::QAB(A)
- S(e);N_GUARD::R1(D)
- R(a);OGATE::QAB(A)
- S(e);N_GUARD::R1(C)
- Refutation
- P(d);
- Try
- B(F);
- Vars
- R(a);OGATE,P_PINR(C),XR(D)::QAB(A)
- R(a);OGATE,XP(E)::QAB(A)
- S(e);N_GUARD,XB(F)::R1(D)
- R(a);OGATE::QAB(A)
- S(e);N_GUARD::R1(D)
- S(e);N_GUARD::R1(C)
- Refutation
- P(d);
- Try
- R(C);
- Vars
- R(a);OGATE,P_PINR(C),XR(D)::QAB(A)
- R(a);OGATE,XP(E)::QAB(A)
- S(e);N_GUARD,XP(G)::R1(D)
- S(e);N_GUARD::R1(D)
- R(a);OGATE::QAB(A)
- S(e);N_GUARD::R1(D),XS(e)
- Refutation
- S(e);
- Try
- R(C);
- Vars
- R(a);OGATE,P_PINR(C),XR(D)::QAB(A)
- R(a);OGATE,XP(E)::QAB(A)
- S(e);N_GUARD,XP(G)::R1(D)
- S(e);N_GUARD::R1(D)
- R(a);OGATE::QAB(A)
- S(e);N_GUARD::R1(D),XS(e)
- Refutation
- S(e);
- Try
- R(D);P_SPINR(C)
- Vars
- R(a);N_PINR(C),OGATE,XP(E)::QAB(A)
- S(e);N_GUARD,XP(G)::R1(D)
- S(e);N_GUARD::R1(D)
- R(a);N_PINR(C),OGATE::QAB(A)
- R(a);OGATE::QAB(A)
- S(e);N_GUARD::R1(D),XS(e)
- Refutation
- R(a);CHECK,XR(C)
- Try
- R(D);P_SPINR(C)
- Vars
- R(a);N_PINR(C),OGATE,XP(E)::QAB(A)
- S(e);N_GUARD,XP(G)::R1(D)
- S(e);N_GUARD::R1(D)
- R(a);N_PINR(C),OGATE::QAB(A)
- R(a);OGATE::QAB(A)
- S(e);N_GUARD::R1(D),XS(e)
- Refutation
- R(a);CHECK,XR(C)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- S(e);N_GUARD::R1(D)
- Refutation
- R(a);XP(E)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- S(e);N_GUARD::R1(C)
- Refutation
- R(a);P_PINR(C),XR(D)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- S(e);N_GUARD::R1(D)
- Refutation
- R(a);XP(E)
- Try
- Actual
- K(B);P-FLIGHT
- Vars
- R(a);OGATE,P_PINR(C),XR(D)::QAB(A)
- R(a);OGATE,XP(E)::QAB(A)
- R(a);OGATE::QAB(A)
- S(e);N_GUARD::R1(D)
- S(e);N_GUARD::R1(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).