MESON Chess Problem Database
Problem Display
PID: 138738 (5KB1/2p4P/1p6/2R1ppQ1/1B1k3p/np2R2q/3p1N2/1n2r1Nr w - - 0 1)
Gross, Erwin
Schach-Echo, 1967
#2
9 + 13
| 5559 | ECSC | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sf3#
- 1...Qg2
- 2.Rd3#
- 1...Qg4
- 2.Rd3#
- 1...Qh2
- 2.Sf3#
- 2.Rd3#
- 1...Qxe3
- 2.Qd8#
- 1...Qf3
- 2.Sxf3#
- 1...Rc1
- 2.Se2#
- 1...Rd1
- 2.Se2#
- 1...Rf1
- 2.Se2#
- 1...Re2
- 2.Sxe2#
- 1...Rxe3
- 2.Qd8#
- 1...Sc2
- 2.Rc4#
- 1...Sc4
- 2.Rxc4#
- 2.Rd5#
- 1...Sb5
- 2.Rc4#
- 1...e4
- 2.h8Q#
- 2.h8B#
- 1...f4
- 2.Qxe5#
- 1...Qf1
- Tries
- 1.Re2?
- threat
- 2.Qd8#
- 1...Rxe2
- 2.Sxe2#
- 1...Qg2
- 2.Qe3#
- 1...Qf3
- 2.Sxf3#
- 1...Sc4
- 2.Rxc4#
- 2.Rd5#
- 1...Sb5
- 2.Rc4#
- 1...f4
- 2.Qxe5#
- 1...Sc3!
- threat
- 1.Rf3?
- threat
- 2.Qd8#
- 1...Qxf3
- 2.Sxf3#
- 1...Sc3
- 2.Qxd2#
- 1...Sc4
- 2.Rxc4#
- 2.Rd5#
- 1...Sb5
- 2.Rc4#
- 1...f4!
- threat
- 1.Rxh3?
- threat
- 2.Sf3#
- 2.Rd3#
- 2.Qd8#
- 1...Rexg1
- 2.Rd3#
- 2.Qe3#
- 2.Qd8#
- 1...Rhxg1
- 2.Rd3#
- 2.Qd8#
- 1...d1Q
- 2.Qd8#
- 1...d1B
- 2.Rd3#
- 2.Qd8#
- 1...d1R
- 2.Sf3#
- 2.Qd8#
- 1...Sc3
- 2.Sf3#
- 2.Rd3#
- 2.Qxd2#
- 1...Re3
- 2.Qxe3#
- 2.Qd8#
- 1...Sc4
- 2.Sf3#
- 2.Rd3#
- 2.Rxc4#
- 2.Rd5#
- 1...Sb5
- 2.Sf3#
- 2.Rd3#
- 2.Rc4#
- 1...e4
- 2.Qf6#
- 2.Qd8#
- 2.Qg7#
- 2.h8Q#
- 2.h8B#
- 1...f4
- 2.Rd3#
- 2.Qd8#
- 1...Rxh3!
- threat
- 1.Rcc3?
- threat
- 2.Rcd3#
- 2.Qd8#
- 1...Qxe3
- 2.Qd8#
- 1...Rxe3
- 2.Qd8#
- 1...e4
- 2.Qf6#
- 2.Qg7#
- 2.h8Q#
- 2.h8B#
- 1...d1Q
- 2.Qd8#
- 1...d1R
- 2.Qd8#
- 1...Qf1
- 2.Sf3#
- 2.Qd8#
- 1...Qg2
- 2.Rcd3#
- 2.Red3#
- 1...Qf3
- 2.Sxf3#
- 2.Rcd3#
- 1...Sc4
- 2.Rcd3#
- 2.Rxc4#
- 1...Sb5
- 2.Rcd3#
- 2.Rc4#
- 1...f4
- 2.Rcd3#
- 2.Qxe5#
- 1...Sxc3!
- threat
- 1.Qf4+?
- 1...e4
- 2.h8Q#
- 2.h8B#
- 1...exf4!
- 1...e4
- 1.h8Q?
- threat
- 2.Qf4#
- 2.Qxe5#
- 1...Qxe3
- 2.Qd8#
- 1...Rxe3
- 2.Qd8#
- 1...f4
- 2.Qxf4#
- 2.Qhxe5#
- 2.Qgxe5#
- 1...Sc3
- 2.Qxe5#
- 1...Qg2
- 2.Rd3#
- 2.Qxe5#
- 1...Qg4
- 2.Rd3#
- 2.Qxe5#
- 1...Qh2
- 2.Sf3#
- 2.Rd3#
- 1...Qf3
- 2.Sxf3#
- 2.Qxe5#
- 1...Sc4
- 2.Rxc4#
- 2.Rd5#
- 2.Qf4#
- 1...Qg3!
- threat
- 1.h8B?
- threat
- 2.Bxe5#
- 2.Qf4#
- 1...Qxe3
- 2.Qd8#
- 1...Rxe3
- 2.Qd8#
- 1...f4
- 2.Qxf4#
- 2.Qxe5#
- 1...Qg2
- 2.Bxe5#
- 2.Rd3#
- 1...Qg4
- 2.Bxe5#
- 2.Rd3#
- 1...Qh2
- 2.Sf3#
- 2.Rd3#
- 1...Qf3
- 2.Sxf3#
- 2.Bxe5#
- 1...Sc3
- 2.Bxe5#
- 1...Sc4
- 2.Rxc4#
- 2.Rd5#
- 2.Qf4#
- 1...Qg3!
- threat
- 1.Re2?
- Keys
- 1.Rxc7!
- threat
- 2.Rd7#
- 1...e4
- 2.h8Q#
- 2.h8B#
- 1...f4
- 2.Qxe5#
- 1...Sc3
- 2.Bxc3#
- 1...Qg2
- 2.Rd3#
- 1...Qf3
- 2.Sxf3#
- 1...Sc4
- 2.Rxc4#
- 1...Sb5
- 2.Rc4#
- threat
- 1.Rxc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- Q(g);N_GUARD::S(A)
- Q(g);N_GUARD::R1(C)
- Q(g);SBLOCK,XR(C)::QAR(F)
- Q(g);N_GUARD::S(A),XQ(g)
- R(b);N_GUARD::S(A)
- R(b);N_GUARD::S(A),XR(b)
- R(b);SBLOCK,XR(C)::QAR(F)
- S(e);N_GUARD::R1(E)
- P(j);::P=Q
- P(k);OGATE::QAB1(F),XP(j)
- Tries
- Try
- R(C);
- Threat
- QAR(F)
- Vars
- R(b);XR(C)::S(A),XR(b)
- Q(g);N_GUARD::QAB1(F)
- Q(g);N_GUARD::S(A),XQ(g)
- S(e);N_GUARD::R1(E)
- P(k);OGATE::QAB1(F),XP(j)
- Refutation
- S(a);
- Try
- R(C);
- Threat
- QAR(F)
- Vars
- Q(g);XR(C)::S(A),XQ(g)
- S(a);N_GUARD::QAR2(F),XP(d)
- S(e);N_GUARD::R1(E)
- Refutation
- P(k);
- Try
- R(C);XQ(g)
- Threat
- DUALS(3)
- Vars
- P(d);::QAR(F)
- Refutation
- R(c);XR(C)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- Q(g);XR(C)::QAR(F)
- R(b);XR(C)::QAR(F)
- P(d);::QAR(F)
- Refutation
- S(a);XR(E)
- Try
- Q(F);CHECK
- Vars
- P(j);P_SPINP(j)::P=Q
- Refutation
- P(j);XQ(F)
- Try
- P(G);P_PINP(j)
- Threat
- DUALS(2)
- Vars
- Q(g);SBLOCK,XR(C)::QAR(F)
- R(b);SBLOCK,XR(C)::QAR(F)
- S(a);::QAB1(G),XP(j)
- Refutation
- Q(g);
- Try
- P(G);P_PINP(j)
- Threat
- DUALS(2)
- Vars
- Q(g);SBLOCK,XR(C)::QAR(F)
- R(b);SBLOCK,XR(C)::QAR(F)
- S(a);::B(G),XP(j)
- Refutation
- Q(g);
- Try
- Actual
- R(E);XP(m)
- Threat
- R(E)
- Vars
- P(j);::P=Q
- P(k);OGATE::QAB1(F),XP(j)
- S(a);N_GUARD::B(D),XS(a)
- Q(g);N_GUARD::R1(C)
- Q(g);N_GUARD::S(A),XQ(g)
- S(e);N_GUARD::R1(E),XS(e)
- S(e);N_GUARD::R1(E)
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).