MESON Chess Problem Database
Problem Display
PID: 96250 (7Q/8/1B6/5p2/p4Pp1/P2P2R1/K1P1N2p/5r1k w - - 0 1)
Andrade, Barry Jack da Costa
The Chess Problem, 1944
#2
9 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra1+
- 2.Qxa1#
- 1...Rb1
- 2.Qa8#
- 1...Rc1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rxf4
- 2.Rg1#
- 1...Ra1+
- Tries
- 1.Kb2?
- 1...Rxf4
- 2.Rg1#
- 1...Ra1
- 2.Qa8#
- 1...Rc1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rb1+!
- 1...Rxf4
- 1.Bf2?
- threat
- 2.Qa8#
- 1...Ra1+
- 2.Qxa1#
- 1...Rxf2
- 2.Rg1#
- 1...Rg1
- 2.Rxg1#
- 1...Rb1!
- threat
- 1.Be3?
- 1...Ra1+
- 2.Qxa1#
- 1...Rxf4
- 2.Rg1#
- 1...Re1
- 2.Qa8#
- 1...Rc1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rb1!
- 1...Ra1+
- 1.Ba5?
- 1...Ra1+
- 2.Qxa1#
- 1...Rxf4
- 2.Rg1#
- 1...Rc1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rb1!
- 1...Ra1+
- 1.Bc5?
- 1...Ra1+
- 2.Qxa1#
- 1...Rxf4
- 2.Rg1#
- 1...Rc1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rb1!
- 1...Ra1+
- 1.Ba7?
- 1...Ra1+
- 2.Qxa1#
- 1...Rxf4
- 2.Rg1#
- 1...Rc1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rb1!
- 1...Ra1+
- 1.Bc7?
- 1...Ra1+
- 2.Qxa1#
- 1...Rxf4
- 2.Rg1#
- 1...Rc1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Rb1!
- 1...Ra1+
- 1.Rxg4?
- 1...Ra1+
- 2.Qxa1#
- 1...Rxf4
- 2.Rg1#
- 1...Rb1
- 2.Qa8#
- 1...Rc1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...fxg4!
- 1...Ra1+
- 1.Qh6?
- 1...Rxf4
- 2.Rg1#
- 1...Rb1
- 2.Qc6#
- 1...Rc1
- 2.Qc6#
- 1...Rd1
- 2.Qc6#
- 1...Re1
- 2.Qc6#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Ra1+!
- 1...Rxf4
- 1.Qh7?
- 1...Rxf4
- 2.Rg1#
- 1...Rb1
- 2.Qb7#
- 1...Rc1
- 2.Qb7#
- 1...Rd1
- 2.Qb7#
- 1...Re1
- 2.Qb7#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Ra1+!
- 1...Rxf4
- 1.c3?
- 1...Rxf4
- 2.Rg1#
- 1...Rb1
- 2.Qa8#
- 1...Rc1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Ra1+!
- 1...Rxf4
- 1.d4?
- 1...Rxf4
- 2.Rg1#
- 1...Rb1
- 2.Qa8#
- 1...Rc1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Ra1+!
- 1...Rxf4
- 1.Kb2?
- Keys
- 1.c4!
- 1...Ra1+
- 2.Qxa1#
- 1...Rxf4
- 2.Rg1#
- 1...Rb1
- 2.Qa8#
- 1...Rc1
- 2.Qa8#
- 1...Rd1
- 2.Qa8#
- 1...Re1
- 2.Qa8#
- 1...Rg1
- 2.Rxg1#
- 1...Rf2
- 2.Rg1#
- 1...Rf3
- 2.Rg1#
- 1...Ra1+
- 1.c4!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(a);CHECK,OGATEB::QAB1(I),XR(a)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD::R1(F)
- R(a);N_GUARD,XP(G)::R1(F)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- R(a);N_GUARD,XP(G)::R1(F)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD::R1(F)
- Refutation
- R(a);CHECK
- Try
- B(H);
- Threat
- QAB(I)
- Vars
- R(a);CHECK,OGATEB::QAB1(I),XR(a)
- R(a);N_GUARD,XB(H)::R1(F)
- R(a);N_GUARD::R1(F),XR(a)
- Refutation
- R(a);
- Try
- B(H);
- Vars
- R(a);CHECK,OGATEB::QAB1(I),XR(a)
- R(a);N_GUARD,XP(G)::R1(F)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD::R1(F)
- Refutation
- R(a);
- Try
- B(H);
- Vars
- R(a);CHECK,OGATEB::QAB1(I),XR(a)
- R(a);N_GUARD,XP(G)::R1(F)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD::R1(F)
- Refutation
- R(a);
- Try
- B(H);
- Vars
- R(a);CHECK,OGATEB::QAB1(I),XR(a)
- R(a);N_GUARD,XP(G)::R1(F)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD::R1(F)
- Refutation
- R(a);
- Try
- B(H);
- Vars
- R(a);CHECK,OGATEB::QAB1(I),XR(a)
- R(a);N_GUARD,XP(G)::R1(F)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD::R1(F)
- Refutation
- R(a);
- Try
- B(H);
- Vars
- R(a);CHECK,OGATEB::QAB1(I),XR(a)
- R(a);N_GUARD,XP(G)::R1(F)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD::R1(F)
- Refutation
- R(a);
- Try
- R(F);XP(e)
- Vars
- R(a);CHECK,OGATEB::QAB1(I),XR(a)
- R(a);N_GUARD,XP(G)::R1(F)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD::R1(F)
- Refutation
- P(f);XR(F)
- Try
- Q(I);
- Vars
- R(a);N_GUARD,XP(G)::R1(F)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD::R1(F)
- Refutation
- R(a);CHECK
- Try
- Q(I);
- Vars
- R(a);N_GUARD,XP(G)::R1(F)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD::R1(F)
- Refutation
- R(a);CHECK
- Try
- P(B);
- Vars
- R(a);N_GUARD,XP(G)::R1(F)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD,P_PINS(C)::R1(F)
- R(a);N_GUARD::R1(F)
- Refutation
- R(a);CHECK
- Try
- P(E);
- Vars
- R(a);N_GUARD,XP(G)::R1(F)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD::R1(F)
- Refutation
- R(a);CHECK
- Try
- Actual
- P(B);
- Vars
- R(a);CHECK,OGATEB::QAB1(I),XR(a)
- R(a);N_GUARD,XP(G)::R1(F)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD,P_PINS(C)::R1(F)
- R(a);N_GUARD::R1(F)
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).