MESON Chess Problem Database
Problem Display
PID: 109927 (4Kb2/2p1pRB1/p1pPk3/q1PN4/2r5/4NP2/8/3R4 w - - 0 1)
Coutinho, Jose Ernesto
CXG, 1977
#2
9 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sxc7#
- 1...Qd2
- 2.Sxc7#
- 1...Qc3
- 2.Sxc7#
- 1...Qb4
- 2.Sxc7#
- 1...Qa1
- 2.Sxc7#
- 1...Qa2
- 2.Sxc7#
- 1...Qa3
- 2.Sxc7#
- 1...Qa4
- 2.Sxc7#
- 1...Qb5
- 2.Sxc7#
- 1...Qxc5
- 2.Sxc7#
- 1...Rc1
- 2.Sf4#
- 1...Rc2
- 2.Sf4#
- 1...Rc3
- 2.Sf4#
- 1...Rf4
- 2.Sxf4#
- 1...Rxc5
- 2.Sf4#
- 1...Bxg7
- 2.Rxe7#
- 1...Qe1
- Tries
- 1.Sxc4?
- threat
- 2.Sf4#
- 1...Qd2
- 2.Sxc7#
- 1...cxd5!
- threat
- 1.Rg1?
- threat
- 2.Rg6#
- 1...Bxg7
- 2.Rxe7#
- 1...Qc3
- 2.Sxc7#
- 1...Qa1
- 2.Sxc7#
- 1...Rf4
- 2.Sxf4#
- 1...Rg4!
- threat
- 1.Rf6+?
- 1...Ke5
- 2.Sxc4#
- 1...exf6!
- 1...Ke5
- 1.f4?
- threat
- 2.f5#
- 1...Qxc5
- 2.Sxc7#
- 1...Rxf4
- 2.Sxf4#
- 1...Bxg7
- 2.Rxe7#
- 1...Rxc5!
- threat
- 1.dxc7?
- threat
- 2.c8Q#
- 2.c8B#
- 1...Qxc7
- 2.Sxc7#
- 1...Rxc5
- 2.Sf4#
- 1...Bxg7
- 2.Rxe7#
- 1...cxd5
- 2.c8Q#
- 2.c8B#
- 1...Rg4
- 2.c8Q#
- 2.c8B#
- 1...Qe1
- 2.c8Q#
- 2.c8B#
- 1...Qd2
- 2.c8Q#
- 2.c8B#
- 1...Qc3
- 2.c8Q#
- 2.c8B#
- 1...Qb4
- 2.c8Q#
- 2.c8B#
- 1...Qb6
- 2.c8Q#
- 2.c8B#
- 1...Qa1
- 2.c8Q#
- 2.c8B#
- 1...Qa2
- 2.c8Q#
- 2.c8B#
- 1...Qa3
- 2.c8Q#
- 2.c8B#
- 1...Qa4
- 2.c8Q#
- 2.c8B#
- 1...Qb5
- 2.c8Q#
- 2.c8B#
- 1...Rc1
- 2.Sf4#
- 2.c8Q#
- 2.c8B#
- 1...Rc2
- 2.Sf4#
- 2.c8Q#
- 2.c8B#
- 1...Rc3
- 2.Sf4#
- 2.c8Q#
- 2.c8B#
- 1...Ra4
- 2.c8Q#
- 2.c8B#
- 1...Rb4
- 2.c8Q#
- 2.c8B#
- 1...Rd4
- 2.c8Q#
- 2.c8B#
- 1...Re4
- 2.c8Q#
- 2.c8B#
- 1...Rf4
- 2.Sxf4#
- 2.c8Q#
- 2.c8B#
- 1...Rh4
- 2.c8Q#
- 2.c8B#
- 1...Qxc5!
- threat
- 1.dxe7?
- threat
- 2.exf8S#
- 1...Qxc5
- 2.Sxc7#
- 1...Rxc5
- 2.Sf4#
- 1...Bxe7
- 2.Rxe7#
- 1...Bxg7!
- threat
- 1.Sxc4?
- Keys
- 1.d7!
- threat
- 2.d8S#
- 1...Qxc5
- 2.Sxc7#
- 1...Rxc5
- 2.Sf4#
- 1...Bxg7
- 2.Rxe7#
- threat
- 1.d7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 13
- Sets
- Q(b);N_GUARD::S(E),XP(f)
- Q(b);N_GUARD,XP(D)::S(E),XP(f)
- R(a);N_GUARD::S(E)
- R(a);N_GUARD::S(E),XR(a)
- R(a);N_GUARD,XP(D)::S(E)
- B(h);N_GUARD,XB(H)::R1(G),XP(g)
- Tries
- Try
- S(B);XR(a)
- Threat
- S(E)
- Vars
- Q(b);N_GUARD::S(E),XP(f)
- Refutation
- P(d);XS(E)
- Try
- R(A);
- Threat
- R(A)
- Vars
- B(h);N_GUARD,XB(H)::R1(G),XP(g)
- Q(b);N_GUARD::S(E),XP(f)
- R(a);N_GUARD::S(E),XR(a)
- Refutation
- R(a);
- Try
- R(G);CHECK
- Vars
- K(e);P-FLIGHT::S(B),XR(a)
- Refutation
- P(g);XR(G)
- Try
- P(C);
- Threat
- P(C)
- Vars
- Q(b);N_GUARD,XP(D)::S(E),XP(f)
- R(a);XP(C)::S(E),XR(a)
- B(h);N_GUARD,XB(H)::R1(G),XP(g)
- Refutation
- R(a);XP(D)
- Try
- P(F);XP(f)
- Threat
- P=Q
- Vars
- Q(b);XP(F)::S(E),XQ(b)
- R(a);N_GUARD,XP(D)::S(E)
- B(h);N_GUARD,XB(H)::R1(G),XP(g)
- P(d);XS(E)::P=Q
- R(a);::P=Q
- Q(b);::P=Q
- Refutation
- Q(b);XP(D)
- Try
- P(F);XP(g)
- Threat
- PXB(h)=S
- Vars
- Q(b);N_GUARD,XP(D)::S(E),XP(f)
- R(a);N_GUARD,XP(D)::S(E)
- B(h);OGATE,XP(F)::R1(G),XB(h)
- Refutation
- B(h);XB(H)
- Try
- Actual
- P(F);
- Threat
- P=S
- Vars
- Q(b);N_GUARD,XP(D)::S(E),XP(f)
- R(a);N_GUARD,XP(D)::S(E)
- B(h);N_GUARD,XB(H)::R1(G),XP(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).