MESON Chess Problem Database
Problem Display
PID: 51330 (nrrb1N2/1Bk2p2/R1P2p2/6P1/b2B1n2/QRN5/1P3P2/5K2 w - - 0 1)
Andrade, Barry Jack da Costa
Manchester Guardian, 1957
#2
12 + 9
| 56 | The Problemist | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Bb5+
- 2.Sxb5#
- 1...Bxc6
- 2.Rxc6#
- 1...Be7
- 2.Qxe7#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sb6
- 2.Bxb6#
- 1...fxg5
- 2.Be5#
- 1...f5
- 2.Be5#
- 1...Rxb7
- Tries
- 1.Se4?
- threat
- 2.Qd6#
- 1...Be7
- 2.Qxe7#
- 1...Bb5+!
- threat
- 1.Se6+?
- 1...Sxe6
- 2.Sd5#
- 1...fxe6!
- 1...Sxe6
- 1.Sh7?
- 1...Bb5+
- 2.Sxb5#
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...fxg5
- 2.Be5#
- 1...Be7
- 2.Qxe7#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sb6
- 2.Bxb6#
- 1...f5
- 2.Be5#
- 1...Bxc6!
- 1...Bb5+
- 1.Be3?
- threat
- 2.Bxf4#
- 1...Bb5+
- 2.Sxb5#
- 1...Be7
- 2.Qxe7#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...fxg5!
- threat
- 1.Bc5?
- threat
- 2.Bd6#
- 1...Bb5+
- 2.Sxb5#
- 1...Be7!
- threat
- 1.Bxf6?
- threat
- 2.Be5#
- 1...Bb5+
- 2.Sxb5#
- 1...Be7
- 2.Qxe7#
- 1...Sd3
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Bxf6!
- threat
- 1.Rbb6?
- 1...Bb5+
- 2.Sxb5#
- 1...Rxb7
- 2.Rxb7#
- 1...Sxb6
- 2.Bxb6#
- 1...fxg5
- 2.Be5#
- 1...Be7
- 2.Qxe7#
- 1...Bd1
- 2.Sb5#
- 1...Bc2
- 2.Sb5#
- 1...Bb3
- 2.Sb5#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...f5
- 2.Be5#
- 1...Bxc6!
- 1...Bb5+
- 1.Rxa4?
- threat
- 2.Sb5#
- 1...Be7
- 2.Qxe7#
- 1...Rxb7!
- threat
- 1.Rab6?
- 1...Bb5+
- 2.Sxb5#
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 1...Sxb6
- 2.Bxb6#
- 1...fxg5
- 2.Be5#
- 1...Be7
- 2.Qxe7#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...f5
- 2.Be5#
- 1...Rxb7!
- 1...Bb5+
- 1.Qb4?
- 1...Bb5+
- 2.Sxb5#
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 1...fxg5
- 2.Be5#
- 1...Be7
- 2.Qxe7#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sb6
- 2.Bxb6#
- 1...f5
- 2.Be5#
- 1...Rxb7!
- 1...Bb5+
- 1.Qc5?
- 1...Bb5+
- 2.Sxb5#
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 2.Qxc6#
- 1...fxg5
- 2.Be5#
- 2.Qe5#
- 1...Be7
- 2.Qxe7#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...f5
- 2.Be5#
- 2.Qe5#
- 1...Sb6!
- 1...Bb5+
- 1.gxf6?
- threat
- 2.Be5#
- 1...Bb5+
- 2.Sxb5#
- 1...Be7
- 2.Qxe7#
- 1...Sd3
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Bxf6!
- threat
- 1.g6?
- 1...Bb5+
- 2.Sxb5#
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 1...Sxg6
- 2.Sd5#
- 1...Be7
- 2.Qxe7#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sb6
- 2.Bxb6#
- 1...f5
- 2.Be5#
- 1...fxg6!
- 1...Bb5+
- 1.Se4?
- Keys
- 1.f3!
- 1...Bb5+
- 2.Sxb5#
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 1...fxg5
- 2.Be5#
- 1...Be7
- 2.Qxe7#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sb6
- 2.Bxb6#
- 1...f5
- 2.Be5#
- 1...Bb5+
- 1.f3!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(g);OGATE,XB(K)::R1(E),XR(g)
- B(a);N_GUARD,XR(E)::S(F)
- B(a);CHECK,N_GUARD::S(F),XB(a)
- B(a);OGATE,XP(J)::R1(I),XB(a)
- B(i);N_GUARD::QAR2(D),XB(i)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- S(f);N_GUARD::B(G),XS(f)
- P(c);N_GUARD,XP(H)::B(G)
- P(c);N_GUARD::B(G)
- Tries
- Try
- S(F);
- Threat
- QAB1(D)
- Vars
- B(i);N_GUARD::QAR2(D),XB(i)
- Refutation
- B(a);CHECK
- Try
- S(L);CHECK
- Vars
- S(b);XS(L)::S(F)
- Refutation
- P(e);XS(L)
- Try
- S(L);
- Vars
- B(a);CHECK,N_GUARD::S(F),XB(a)
- R(g);OGATE,XB(K)::R1(E),XR(g)
- B(a);N_GUARD,XR(E)::S(F)
- P(c);N_GUARD,XP(H)::B(G)
- B(i);N_GUARD::QAR2(D),XB(i)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- S(f);N_GUARD::B(G),XS(f)
- P(c);N_GUARD::B(G)
- Refutation
- B(a);XP(J)
- Try
- B(G);
- Threat
- B(G),XS(b)
- Vars
- B(a);CHECK,N_GUARD::S(F),XB(a)
- B(i);N_GUARD::QAR2(D),XB(i)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- Refutation
- P(c);XP(H)
- Try
- B(G);
- Threat
- B(G)
- Vars
- B(a);CHECK,N_GUARD::S(F),XB(a)
- Refutation
- B(i);
- Try
- B(G);XP(c)
- Threat
- B(G)
- Vars
- B(a);CHECK,N_GUARD::S(F),XB(a)
- B(i);N_GUARD::QAR2(D),XB(i)
- S(b);N_GUARD::S(F)
- Refutation
- B(i);XB(G)
- Try
- R(E);
- Vars
- B(a);CHECK,N_GUARD::S(F),XB(a)
- R(g);OGATE,XB(K)::R1(E),XR(g)
- S(f);OGATE,XR(E)::B(G),XS(f)
- P(c);N_GUARD,XP(H)::B(G)
- B(i);N_GUARD::QAR2(D),XB(i)
- B(a);N_GUARD::S(F)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- P(c);N_GUARD::B(G)
- Refutation
- B(a);XP(J)
- Try
- R(I);XB(a)
- Threat
- S(F)
- Vars
- B(i);N_GUARD::QAR2(D),XB(i)
- Refutation
- R(g);XB(K)
- Try
- R(I);
- Vars
- B(a);CHECK,N_GUARD::S(F),XB(a)
- B(a);N_GUARD,XR(E)::S(F)
- B(a);OGATE,XP(J)::R1(I),XB(a)
- S(f);OGATE,XR(I)::B(G),XS(f)
- P(c);N_GUARD,XP(H)::B(G)
- B(i);N_GUARD::QAR2(D),XB(i)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- P(c);N_GUARD::B(G)
- Refutation
- R(g);XB(K)
- Try
- Q(D);
- Vars
- B(a);CHECK,N_GUARD::S(F),XB(a)
- B(a);N_GUARD,XR(E)::S(F)
- B(a);OGATE,XP(J)::R1(I),XB(a)
- P(c);N_GUARD,XP(H)::B(G)
- B(i);N_GUARD::QAR2(D),XB(i)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- S(f);N_GUARD::B(G),XS(f)
- P(c);N_GUARD::B(G)
- Refutation
- R(g);XB(K)
- Try
- Q(D);
- Vars
- B(a);CHECK,N_GUARD::S(F),XB(a)
- R(g);OGATE,XB(K)::R1(E),XR(g)
- B(a);N_GUARD,XR(E)::S(F)
- B(i);N_GUARD::QAR2(D),XB(i)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- Refutation
- S(f);
- Try
- P(H);XP(c)
- Threat
- B(G)
- Vars
- B(a);CHECK,N_GUARD::S(F),XB(a)
- B(i);N_GUARD::QAR2(D),XB(i)
- S(b);N_GUARD::S(F)
- Refutation
- B(i);XP(H)
- Try
- P(H);
- Vars
- B(a);CHECK,N_GUARD::S(F),XB(a)
- R(g);OGATE,XB(K)::R1(E),XR(g)
- B(a);N_GUARD,XR(E)::S(F)
- B(a);OGATE,XP(J)::R1(I),XB(a)
- S(b);N_GUARD,XP(H)::S(F)
- B(i);N_GUARD::QAR2(D),XB(i)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- S(f);N_GUARD::B(G),XS(f)
- P(c);N_GUARD::B(G)
- Refutation
- P(e);XP(H)
- Try
- Actual
- P(C);
- Vars
- B(a);CHECK,N_GUARD::S(F),XB(a)
- R(g);OGATE,XB(K)::R1(E),XR(g)
- B(a);N_GUARD,XR(E)::S(F)
- B(a);OGATE,XP(J)::R1(I),XB(a)
- P(c);N_GUARD,XP(H)::B(G)
- B(i);N_GUARD::QAR2(D),XB(i)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- S(f);N_GUARD::B(G),XS(f)
- P(c);N_GUARD::B(G)
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).