MESON Chess Problem Database
Problem Display
PID: 114814 (7Q/3K4/1B6/5P2/N5p1/6R1/3PN2p/5r1k w - - 0 1)
Andrade, Barry Jack da Costa
Catholic Times, 1958
#2
8 + 4
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxa1#
- 2.Qa8#
- 1...Rb1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Rxf5
- 2.Rg1#
- 1...Ra1
- Tries
- 1.Kd6?
- 1...Rxf5
- 2.Rg1#
- 1...Ra1
- 2.Qxa1#
- 2.Qa8#
- 1...Rb1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Rc1!
- 1...Rxf5
- 1.Ke6?
- 1...Rxf5
- 2.Rg1#
- 1...Ra1
- 2.Qxa1#
- 2.Qa8#
- 1...Rb1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Rc1!
- 1...Rxf5
- 1.Kc7?
- 1...Rxf5
- 2.Rg1#
- 1...Ra1
- 2.Qxa1#
- 2.Qa8#
- 1...Rb1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Rc1+!
- 1...Rxf5
- 1.Ke7?
- 1...Rxf5
- 2.Rg1#
- 1...Ra1
- 2.Qxa1#
- 2.Qa8#
- 1...Rb1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Rc1!
- 1...Rxf5
- 1.Sac3?
- 1...Rxf5
- 2.Rg1#
- 1...Rc1
- 2.Qa8#
- 1...Rb1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Ra1!
- 1...Rxf5
- 1.Bg1?
- threat
- 2.Qxh2#
- 1...Rxg1
- 2.Rxg1#
- 1...Rf2!
- threat
- 1.Bc5?
- 1...Rxf5
- 2.Rg1#
- 1...Rc1
- 2.Qa8#
- 1...Ra1
- 2.Qxa1#
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Rb1!
- 1...Rxf5
- 1.Rxg4?
- 1...Rxf5
- 2.Rg1#
- 1...Ra1
- 2.Qxa1#
- 2.Qa8#
- 1...Rb1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Rc1!
- 1...Rxf5
- 1.Qh3?
- threat
- 2.Qxf1#
- 2.Qg2#
- 1...Rxf5
- 2.Rg1#
- 2.Qg2#
- 1...Rc1
- 2.Qg2#
- 1...Ra1
- 2.Qg2#
- 1...Rb1
- 2.Qg2#
- 1...Rd1
- 2.Qg2#
- 1...Re1
- 2.Qg2#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 2.Qg2#
- 1...Rf4
- 2.Rg1#
- 2.Qg2#
- 1...gxh3!
- threat
- 1.Qh6?
- 1...Rxf5
- 2.Rg1#
- 1...Ra1
- 2.Qc6#
- 1...Rb1
- 2.Qc6#
- 1...Rd1
- 2.Qc6#
- 1...Re1
- 2.Qc6#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Rc1!
- 1...Rxf5
- 1.d3?
- 1...Rxf5
- 2.Rg1#
- 1...Ra1
- 2.Qxa1#
- 2.Qa8#
- 1...Rb1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Rc1!
- 1...Rxf5
- 1.d4?
- 1...Rxf5
- 2.Rg1#
- 1...Ra1
- 2.Qa8#
- 1...Rb1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Rc1!
- 1...Rxf5
- 1.f6?
- 1...Rxf6
- 2.Rg1#
- 1...Ra1
- 2.Qa8#
- 1...Rb1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Rf5
- 2.Rg1#
- 1...Rc1!
- 1...Rxf6
- 1.Kd6?
- Keys
- 1.Sc5!
- 1...Rxf5
- 2.Rg1#
- 1...Rc1
- 2.Qa8#
- 1...Ra1
- 2.Qxa1#
- 1...Rb1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Rxf5
- 1.Sc5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::QAB(H)
- R(a);N_GUARD,P_PINP(A)::QAB(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,XP(E)::R1(C)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- R(a);N_GUARD,XP(E)::R1(C)
- R(a);N_GUARD::QAB(H)
- R(a);N_GUARD,P_PINP(A)::QAB(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- Refutation
- R(a);
- Try
- K(G);S_FLIGHT
- Vars
- R(a);N_GUARD,XP(E)::R1(C)
- R(a);N_GUARD::QAB(H)
- R(a);N_GUARD,P_PINS(B)::QAB(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- Refutation
- R(a);
- Try
- K(G);P-FLIGHT
- Vars
- R(a);N_GUARD,XP(E)::R1(C)
- R(a);N_GUARD::QAB(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- Refutation
- R(a);CHECK
- Try
- K(G);P-FLIGHT
- Vars
- R(a);N_GUARD,XP(E)::R1(C)
- R(a);N_GUARD::QAB(H)
- R(a);N_GUARD,P_PINS(B)::QAB(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- Refutation
- R(a);
- Try
- S(D);
- Vars
- R(a);N_GUARD,XP(E)::R1(C)
- R(a);N_GUARD::QAB(H)
- R(a);N_GUARD,P_PINP(A)::QAB(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- Refutation
- R(a);
- Try
- B(F);
- Threat
- QAR1(H),XP(c)
- Vars
- R(a);OGATE,XB(F)::R1(C),XR(a)
- Refutation
- R(a);
- Try
- B(F);
- Vars
- R(a);N_GUARD,XP(E)::R1(C)
- R(a);N_GUARD::QAB(H)
- R(a);N_GUARD,P_PINP(A)::QAB(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- Refutation
- R(a);
- Try
- R(C);XP(d)
- Vars
- R(a);N_GUARD,XP(E)::R1(C)
- R(a);N_GUARD::QAB(H)
- R(a);N_GUARD,P_PINP(A)::QAB(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- Refutation
- R(a);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(a);::QAB1(H)
- R(a);SBLOCK::QAB1(H)
- R(a);P_PINP(A)::QAB1(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- Refutation
- P(d);N_SPINP(c),XQ(H)
- Try
- Q(H);
- Vars
- R(a);N_GUARD,XP(E)::R1(C)
- R(a);N_GUARD,SBLOCK::QAB(H)
- R(a);N_GUARD::QAB(H)
- R(a);N_GUARD,P_PINP(A)::QAB(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- Refutation
- R(a);
- Try
- P(A);
- Vars
- R(a);N_GUARD,XP(E)::R1(C)
- R(a);N_GUARD::QAB(H)
- R(a);N_GUARD,P_PINP(A)::QAB(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- Refutation
- R(a);
- Try
- P(A);
- Vars
- R(a);N_GUARD,XP(E)::R1(C)
- R(a);N_GUARD,SBLOCK::QAB(H)
- R(a);N_GUARD::QAB(H)
- R(a);N_GUARD,P_PINP(A)::QAB(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- Refutation
- R(a);
- Try
- P(E);
- Vars
- R(a);N_GUARD,XP(E)::R1(C)
- R(a);N_GUARD,SBLOCK::QAB(H)
- R(a);N_GUARD::QAB(H)
- R(a);N_GUARD,P_PINP(A)::QAB(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);N_GUARD::R1(C)
- Refutation
- R(a);
- Try
- Actual
- S(D);
- Vars
- R(a);N_GUARD,XP(E)::R1(C)
- R(a);N_GUARD::QAB(H)
- R(a);OGATEB::QAB1(H),XR(a)
- R(a);N_GUARD,P_PINP(A)::QAB(H)
- R(a);N_GUARD::R1(C),XR(a)
- R(a);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).