MESON Chess Problem Database
Problem Display
PID: 250733 (2Bn4/2Qr4/3n4/R3B3/1N1pk3/3N4/4K2b/5R1r w - - 0 1)
Lobusov, Andrey Jakovlevic
Deutsche Schachzeitung, 1983
#2
8 + 7
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxc7
- 2.Sf2#
- 1...Re7
- 2.Sf2#
- 1...Rg7
- 2.Sf2#
- 1...Rh7
- 2.Sf2#
- 1...Bg1
- 2.Rf4#
- 1...Bf4
- 2.Rxf4#
- 1...Bxe5
- 2.Sc5#
- 2.Rxe5#
- 1...Sc4
- 2.Sc5#
- 1...Sb5
- 2.Sc5#
- 1...Sf5
- 2.Sf2#
- 2.Sc5#
- 1...S6f7
- 2.Sc5#
- 1...Sxc8
- 2.Sc5#
- 1...Se8
- 2.Sc5#
- 1...Sc6
- 2.Qxc6#
- 1...Se6
- 2.Qc6#
- 1...Sb7
- 2.Qc6#
- 1...S8f7
- 2.Qc6#
- 1...Rxc7
- Tries
- 1.Bxh2?
- threat
- 2.Sf2#
- 2.Sc5#
- 2.Rf4#
- 2.Re5#
- 1...Rxf1
- 2.Re5#
- 1...Rxc7
- 2.Sf2#
- 2.Rf4#
- 2.Re5#
- 1...Re7
- 2.Sf2#
- 2.Sc5#
- 2.Rf4#
- 1...Rf7
- 2.Sc5#
- 2.Re5#
- 1...Sc4
- 2.Sf2#
- 2.Sc5#
- 2.Rf4#
- 2.Qf4#
- 1...Sb5
- 2.Sc5#
- 2.Rf4#
- 2.Qf4#
- 2.Qe5#
- 1...S6b7
- 2.Sf2#
- 2.Rf4#
- 2.Re5#
- 2.Qf4#
- 2.Qe5#
- 1...S6f7
- 2.Sf2#
- 2.Sc5#
- 2.Rf4#
- 2.Qf4#
- 1...Sc6
- 2.Sf2#
- 2.Sc5#
- 2.Rf4#
- 2.Qxc6#
- 1...Se6
- 2.Sf2#
- 2.Re5#
- 2.Qc6#
- 1...S8b7
- 2.Sf2#
- 2.Rf4#
- 2.Re5#
- 2.Qc6#
- 1...S8f7
- 2.Sf2#
- 2.Sc5#
- 2.Rf4#
- 2.Qc6#
- 1...Rxh2+!
- threat
- 1.Bg3?
- threat
- 2.Sf2#
- 2.Sc5#
- 2.Rf4#
- 2.Re5#
- 1...Rxf1
- 2.Re5#
- 1...Rxc7
- 2.Sf2#
- 2.Rf4#
- 2.Re5#
- 1...Re7
- 2.Sf2#
- 2.Sc5#
- 2.Rf4#
- 1...Rf7
- 2.Sc5#
- 2.Re5#
- 1...Bg1
- 2.Sc5#
- 2.Rf4#
- 2.Re5#
- 1...Sc4
- 2.Sf2#
- 2.Sc5#
- 2.Rf4#
- 2.Qf4#
- 1...Sb5
- 2.Sc5#
- 2.Rf4#
- 2.Qf4#
- 2.Qe5#
- 1...S6b7
- 2.Sf2#
- 2.Rf4#
- 2.Re5#
- 2.Qf4#
- 2.Qe5#
- 1...S6f7
- 2.Sf2#
- 2.Sc5#
- 2.Rf4#
- 2.Qf4#
- 1...Sc6
- 2.Sf2#
- 2.Sc5#
- 2.Rf4#
- 2.Qxc6#
- 1...Se6
- 2.Sf2#
- 2.Re5#
- 2.Qc6#
- 1...S8b7
- 2.Sf2#
- 2.Rf4#
- 2.Re5#
- 2.Qc6#
- 1...S8f7
- 2.Sf2#
- 2.Sc5#
- 2.Rf4#
- 2.Qc6#
- 1...Bxg3!
- threat
- 1.Bb7+?
- 1...Sc6
- 2.Bxc6#
- 2.Qxc6#
- 1...S8xb7
- 2.Qc6#
- 1...S6xb7!
- 1...Sc6
- 1.Qb6?
- threat
- 2.Qxd4#
- 1...Bxe5
- 2.Sc5#
- 2.Rxe5#
- 1...Sxc8
- 2.Qg6#
- 1...Bf4
- 2.Rxf4#
- 1...Bg1
- 2.Rf4#
- 1...Sc4
- 2.Qg6#
- 1...Sb5
- 2.Qg6#
- 1...Sf5
- 2.Sf2#
- 1...S6b7
- 2.Qg6#
- 1...S6f7
- 2.Qg6#
- 1...Se8
- 2.Qg6#
- 1...Sc6
- 2.Qxc6#
- 1...Se6
- 2.Qc6#
- 1...Rxf1!
- threat
- 1.Qc2?
- threat
- 2.Sf2#
- 1...Bxe5
- 2.Sc5#
- 2.Rxe5#
- 1...Sb5!
- threat
- 1.Bxh2?
- Keys
- 1.Bf4!
- threat
- 2.Re5#
- 1...Bxf4
- 2.Sf2#
- 2.Rxf4#
- 1...Sb5
- 2.Qe5#
- 1...Re7
- 2.Sc5#
- 1...Sc4
- 2.Sf2#
- 1...S6f7
- 2.Sf2#
- 1...Sc6
- 2.Qxc6#
- 1...S8f7
- 2.Qc6#
- threat
- 1.Bf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- R(f);XQ(G)::S(C)
- R(f);::S(C)
- B(b);N_GUARD::R1(A)
- B(b);N_GUARD::R1(A),XB(b)
- S(e);::S(C)
- S(e);XB(H)::S(C)
- S(g);N_GUARD::QAB(G),XS(g)
- S(g);N_GUARD::QAB(G)
- Tries
- Try
- B(F);XB(b)
- Threat
- DUALS(4)
- Vars
- R(a);XR(A)::R1(E)
- Refutation
- R(a);CHECK,XB(F)
- Try
- B(F);
- Threat
- DUALS(4)
- Vars
- R(a);XR(A)::R1(E)
- Refutation
- B(b);XB(F)
- Try
- B(H);CHECK
- Vars
- S(g);N_GUARD,XB(H)::QAB(G)
- Refutation
- S(e);XB(H)
- Try
- Q(G);
- Threat
- QAR1(G),XP(c)
- Vars
- S(e);OGATE,XB(H)::QAB(G)
- B(b);N_GUARD::R1(A),XB(b)
- B(b);N_GUARD::R1(A)
- S(e);OGATE::QAB(G)
- S(e);SBLOCK::S(C)
- S(g);N_GUARD::QAB(G),XS(g)
- S(g);N_GUARD::QAB(G)
- Refutation
- R(a);XR(A)
- Try
- Q(G);
- Threat
- QAB(G)+S(C),DCHECK
- Refutation
- S(e);
- Try
- Actual
- B(F);
- Threat
- R1(E)
- Vars
- S(e);OGATE::QAR1(G)
- R(f);::S(C)
- S(e);::S(C)
- S(g);N_GUARD::QAB(G),XS(g)
- S(g);N_GUARD::QAB(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).