MESON Chess Problem Database
Problem Display
PID: 52891 (8/pK2p3/PbBPrP2/4k1rp/3N1RpR/Q6N/3P2p1/6B1 w - - 0 1)
Andrade, Barry Jack da Costa
Parallele 50, 1949
#2
12 + 9
| 785 | Het Belgisch Schaakbord (L'Echiquier Belge) | 1949 |
SOLUTION
- SOUND
- Sets
- 1...Rf5
- 2.Rxf5#
- 1...Rg6
- 2.Rf5#
- 1...Rg7
- 2.Rf5#
- 1...Rg8
- 2.Rf5#
- 1...Rxd6
- 2.Qe3#
- 1...Rxf6
- 2.Re4#
- 1...Bxd4
- 2.Bxd4#
- 1...Ba5
- 2.Qc5#
- 1...Bc5
- 2.Qxc5#
- 1...Bc7
- 2.Qc5#
- 1...Bd8
- 2.Qc5#
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Sf3#
- 1...exd6
- 2.Qe3#
- 1...exf6
- 2.Re4#
- 1...Rf5
- Tries
- 1.Ka8?
- 1...Rxd6
- 2.Qe3#
- 1...Rxf6
- 2.Re4#
- 1...Bxd4
- 2.Bxd4#
- 1...gxh3
- 2.Sf3#
- 1...exd6
- 2.Qe3#
- 1...exf6
- 2.Re4#
- 1...Rf5
- 2.Rxf5#
- 1...Bc5
- 2.Qxc5#
- 1...Rg6
- 2.Rf5#
- 1...Rg7
- 2.Rf5#
- 1...Ba5
- 2.Qc5#
- 1...Bc7
- 2.Qc5#
- 1...Bd8
- 2.Qc5#
- 1...g3
- 2.Sf3#
- 1...Rg8+!
- 1...Rxd6
- 1.Kc8?
- 1...Rxd6
- 2.Qe3#
- 1...Rxf6
- 2.Re4#
- 1...Bxd4
- 2.Bxd4#
- 1...gxh3
- 2.Sf3#
- 1...exd6
- 2.Qe3#
- 1...exf6
- 2.Re4#
- 1...Rf5
- 2.Rxf5#
- 1...Bc5
- 2.Qxc5#
- 1...Rg6
- 2.Rf5#
- 1...Rg7
- 2.Rf5#
- 1...Ba5
- 2.Qc5#
- 1...Bc7
- 2.Qc5#
- 1...Bd8
- 2.Qc5#
- 1...g3
- 2.Sf3#
- 1...Rg8+!
- 1...Rxd6
- 1.Bxg2?
- threat
- 2.Sc6#
- 1...Rxd6
- 2.Qe3#
- 1...Bxd4
- 2.Bxd4#
- 1...Rf5
- 2.Rxf5#
- 1...Bc5
- 2.Qxc5#
- 1...Rxf6!
- threat
- 1.Rhxg4?
- threat
- 2.Sf3#
- 2.Rxg5#
- 1...Rxg4
- 2.Sf3#
- 2.Rf5#
- 1...Rxd6
- 2.Rxg5#
- 2.Qe3#
- 1...Rxf6
- 2.Re4#
- 1...Bxd4
- 2.Bxd4#
- 2.Rxg5#
- 1...exf6
- 2.Sf3#
- 2.Re4#
- 1...Rf5
- 2.Rxf5#
- 1...Bc5
- 2.Qxc5#
- 1...Rg6
- 2.Sf3#
- 2.Rf5#
- 1...Rg7
- 2.Sf3#
- 2.Rf5#
- 1...Rg8
- 2.Sf3#
- 2.Rf5#
- 1...hxg4!
- threat
- 1.Qb3?
- threat
- 2.Qd5#
- 2.Qxe6#
- 1...Rxd6
- 2.Qe3#
- 1...Rxf6
- 2.Qd5#
- 1...Bxd4
- 2.Qd5#
- 1...Rf5
- 2.Qxe6#
- 1...Kxd6!
- threat
- 1.Qg3?
- threat
- 2.Rf1#
- 2.Rf3#
- 2.Rf5#
- 1...Rxf6
- 2.Re4#
- 2.Rf5#
- 1...Bxd4
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 1...gxh3
- 2.Rf5#
- 1...Rf5
- 2.Rxf5#
- 1...Kxd6!
- threat
- 1.dxe7?
- 1...Rxe7+
- 2.Qxe7#
- 1...Rxf6
- 2.Re4#
- 1...Bxd4
- 2.Bxd4#
- 1...gxh3
- 2.Sf3#
- 1...Rf5
- 2.Rxf5#
- 1...Bc5
- 2.Qxc5#
- 1...Rg6
- 2.Rf5#
- 1...Rg7
- 2.Rf5#
- 1...Rg8
- 2.Rf5#
- 1...Rd6
- 2.Qe3#
- 1...Ba5
- 2.Qc5#
- 1...Bc7
- 2.Qc5#
- 1...Bd8
- 2.Qc5#
- 1...g3
- 2.Sf3#
- 1...Rxc6!
- 1...Rxe7+
- 1.d7?
- 1...Rxf6
- 2.Re4#
- 1...Bxd4
- 2.Bxd4#
- 1...gxh3
- 2.Sf3#
- 1...exf6
- 2.Re4#
- 1...Rf5
- 2.Rxf5#
- 1...Bc5
- 2.Qxc5#
- 1...Rg6
- 2.Rf5#
- 1...Rg7
- 2.Rf5#
- 1...Rg8
- 2.Rf5#
- 1...Rd6
- 2.Qe3#
- 1...Ba5
- 2.Qc5#
- 1...Bc7
- 2.Qc5#
- 1...Bd8
- 2.Qc5#
- 1...g3
- 2.Sf3#
- 1...Rxc6!
- 1...Rxf6
- 1.Ka8?
- Keys
- 1.Rf2!
- 1...Kxd4
- 2.Qc3#
- 1...Rxd6
- 2.Qe3#
- 1...Rxf6
- 2.Re2#
- 1...Bxd4
- 2.Qg3#
- 1...gxh3
- 2.Re4#
- 1...exd6
- 2.Qe3#
- 1...exf6
- 2.Re2#
- 1...Rf5
- 2.Rxf5#
- 1...Bc5
- 2.Qxc5#
- 1...Rg6
- 2.Rf5#
- 1...Rg7
- 2.Rf5#
- 1...Rg8
- 2.Rf5#
- 1...Ba5
- 2.Qc5#
- 1...Bc7
- 2.Qc5#
- 1...Bd8
- 2.Qc5#
- 1...g3
- 2.Re4#
- 1...Kxd4
- 1.Rf2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 5
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(d);N_GUARD::R1(F),XR(d)
- R(d);N_GUARD::R1(F)
- R(g);SBLOCK,XP(J)::QAR2(C)
- R(g);SBLOCK,XP(K)::R1(F)
- B(f);OGATE,XS(E)::B(A),XB(f)
- B(f);N_GUARD::QAR2(C)
- B(f);N_GUARD::QAR2(C),XB(f)
- P(b);N_GUARD,XS(D)::S(E)
- P(b);N_GUARD::S(E)
- P(i);SBLOCK,XP(J)::QAR2(C)
- P(i);SBLOCK,XP(K)::R1(F)
- Tries
- Try
- K(L);S_FLIGHT
- Vars
- R(g);SBLOCK,XP(J)::QAR2(C)
- R(g);SBLOCK,XP(K)::R1(F)
- B(f);OGATE,XS(E)::B(A),XB(f)
- P(b);N_GUARD,XS(D)::S(E)
- P(i);SBLOCK,XP(J)::QAR2(C)
- P(i);SBLOCK,XP(K)::R1(F)
- R(d);N_GUARD::R1(F),XR(d)
- B(f);N_GUARD::QAR2(C),XB(f)
- R(d);N_GUARD::R1(F)
- B(f);N_GUARD::QAR2(C)
- P(b);N_GUARD::S(E)
- Refutation
- R(d);CHECK
- Try
- K(L);S_FLIGHT
- Vars
- R(g);SBLOCK,XP(J)::QAR2(C)
- R(g);SBLOCK,XP(K)::R1(F)
- B(f);OGATE,XS(E)::B(A),XB(f)
- P(b);N_GUARD,XS(D)::S(E)
- P(i);SBLOCK,XP(J)::QAR2(C)
- P(i);SBLOCK,XP(K)::R1(F)
- R(d);N_GUARD::R1(F),XR(d)
- B(f);N_GUARD::QAR2(C),XB(f)
- R(d);N_GUARD::R1(F)
- B(f);N_GUARD::QAR2(C)
- P(b);N_GUARD::S(E)
- Refutation
- R(d);CHECK
- Try
- B(I);XP(a)
- Threat
- S(E)
- Vars
- R(g);SBLOCK,XP(J)::QAR2(C)
- B(f);OGATE,XS(E)::B(A),XB(f)
- R(d);N_GUARD::R1(F),XR(d)
- B(f);N_GUARD::QAR2(C),XB(f)
- Refutation
- R(g);XP(K)
- Try
- R(G);XP(b)
- Threat
- DUALS(2)
- Vars
- R(g);SBLOCK,XP(K)::R1(F)
- R(d);N_GUARD::R1(F),XR(d)
- B(f);N_GUARD::QAR2(C),XB(f)
- Refutation
- P(e);XR(G)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- R(g);SBLOCK,XP(J)::QAR2(C)
- R(g);XP(K)::QAR1(C)
- B(f);XS(E)::QAR1(C)
- R(d);::QAR1(C),XR(g)
- Refutation
- K(c);S_FLIGHT,XP(J)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- P(b);XS(D)::QAB(C)+R(F),DCHECK
- R(d);::QAB(C)+R(F),DCHECK,XR(d)
- Refutation
- K(c);S_FLIGHT,XP(J)
- Try
- P(J);XP(i)
- Vars
- R(g);CHECK,OGATE,XP(J)::QAR2(C),XR(g)
- R(g);SBLOCK,XP(K)::R1(F)
- B(f);OGATE,XS(E)::B(A),XB(f)
- P(b);N_GUARD,XS(D)::S(E)
- R(d);N_GUARD::R1(F),XR(d)
- B(f);N_GUARD::QAR2(C),XB(f)
- R(d);N_GUARD::R1(F)
- R(d);N_GUARD,P_PINP(J)::R1(F)
- R(g);SBLOCK::QAR2(C)
- B(f);N_GUARD::QAR2(C)
- P(b);N_GUARD::S(E)
- Refutation
- R(g);XB(I)
- Try
- P(J);
- Vars
- R(g);SBLOCK,XP(K)::R1(F)
- B(f);OGATE,XS(E)::B(A),XB(f)
- P(b);N_GUARD,XS(D)::S(E)
- P(i);SBLOCK,XP(K)::R1(F)
- R(d);N_GUARD::R1(F),XR(d)
- B(f);N_GUARD::QAR2(C),XB(f)
- R(d);N_GUARD::R1(F)
- R(g);SBLOCK::QAR2(C)
- B(f);N_GUARD::QAR2(C)
- P(b);N_GUARD::S(E)
- Refutation
- R(g);XB(I)
- Try
- Actual
- R(F);
- Vars
- K(c);OGATEB,P_SPINP(b),S_FLIGHT,XS(E)::QAB1(C)
- R(g);SBLOCK,XP(J)::QAR2(C)
- R(g);SBLOCK,XP(K)::R(F)
- B(f);SBLOCK,XS(E)::QAB(C)
- P(b);OGATE,XS(D)::R1(G)
- P(i);SBLOCK,XP(J)::QAR2(C)
- P(i);SBLOCK,XP(K)::R(F)
- R(d);N_GUARD::R1(F),XR(d)
- B(f);N_GUARD::QAR2(C),XB(f)
- R(d);N_GUARD::R1(F)
- B(f);N_GUARD::QAR2(C)
- P(b);OGATE::R1(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).