MESON Chess Problem Database
Problem Display
PID: 82176 (3nb3/K3N3/n1p5/6R1/2pkNp2/4Rp1Q/3PP2r/8 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Deutsche Schachzeitung, 1975
#2
8 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxe2
- 2.Qh8#
- 1...Rf2
- 2.Qh8#
- 1...Rg2
- 2.Qh8#
- 1...Bh5
- 2.Qd7#
- 1...Bg6
- 2.Qd7#
- 1...Bd7
- 2.Qxd7#
- 1...c5
- 2.Rd5#
- 1...Rxe2
- Tries
- 1.Sf2?
- threat
- 2.Re4#
- 1...Rxf2
- 2.Qh8#
- 1...fxe3
- 2.Qg4#
- 1...Bg6
- 2.Qd7#
- 1...Sc5!
- threat
- 1.Sg3?
- threat
- 2.Re4#
- 1...Rxe2
- 2.Qh8#
- 1...fxe3
- 2.Qg4#
- 1...fxg3
- 2.Qg4#
- 1...Bg6
- 2.Qd7#
- 1...Sc5
- 2.Sgf5#
- 1...fxe2!
- threat
- 1.Sc5?
- threat
- 2.Re4#
- 1...Rxe2
- 2.Qh8#
- 1...fxe3
- 2.Qg4#
- 1...Bg6
- 2.Qd7#
- 1...Sxc5!
- threat
- 1.Sd6?
- threat
- 2.Re4#
- 1...Rxe2
- 2.Qh8#
- 1...fxe3
- 2.Qg4#
- 1...Sc5
- 2.Sdf5#
- 1...Bg6!
- threat
- 1.Sf6?
- threat
- 2.Re4#
- 1...fxe3
- 2.Qg4#
- 1...Bg6
- 2.Qd7#
- 1...Sc5
- 2.Sf5#
- 1...Rxe2!
- threat
- 1.Rd3+?
- 1...Kxe4
- 2.Qf5#
- 2.Qxf3#
- 1...cxd3!
- 1...Kxe4
- 1.Qe6?
- threat
- 2.Sf5#
- 2.Qe5#
- 2.Qd6#
- 2.Qf6#
- 1...fxe3
- 2.Sf5#
- 2.Qe5#
- 1...Rh6
- 2.Sf5#
- 2.Qe5#
- 1...Rh7
- 2.Qe5#
- 2.Qd6#
- 2.Qf6#
- 1...Bg6
- 2.Qd7#
- 2.Qe5#
- 2.Qd6#
- 2.Qf6#
- 1...Bf7
- 2.Sf5#
- 2.Qe5#
- 2.Qf6#
- 1...Sb4
- 2.Sf5#
- 2.Qe5#
- 2.Qf6#
- 1...Sc7
- 2.Sf5#
- 2.Qe5#
- 2.Qf6#
- 1...Sb7
- 2.Sf5#
- 2.Qe5#
- 2.Qf6#
- 1...Sf7
- 2.Sf5#
- 1...c3
- 2.Sf5#
- 2.Rd3#
- 1...Sxe6!
- threat
- 1.Sf2?
- Keys
- 1.Sc3!
- threat
- 2.Re4#
- 1...Rxe2
- 2.Qh8#
- 1...fxe3
- 2.Qg4#
- 1...Bg6
- 2.Qd7#
- 1...Sc5
- 2.Sf5#
- threat
- 1.Sc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(a);N_GUARD,XP(B)::QAB(D)
- R(a);N_GUARD::QAB(D)
- B(i);N_GUARD::QAR(D)
- B(i);N_GUARD::QAR(D),XB(i)
- P(g);N_GUARD::R1(F)
- Tries
- Try
- S(E);
- Threat
- R1(C)
- Vars
- R(a);N_GUARD,XS(E)::QAB(D)
- P(e);OGATEB,XR(C)::QAR(D)
- B(i);N_GUARD::QAR(D)
- Refutation
- S(f);
- Try
- S(E);
- Threat
- R1(C)
- Vars
- R(a);N_GUARD,XP(B)::QAB(D)
- P(e);OGATEB,XR(C)::QAR(D)
- P(e);OGATEB,XS(E)::QAR(D)
- B(i);N_GUARD::QAR(D)
- S(f);SBLOCK::S(E)
- Refutation
- P(b);XP(B)
- Try
- S(E);
- Threat
- R1(C)
- Vars
- R(a);N_GUARD,XP(B)::QAB(D)
- P(e);OGATEB,XR(C)::QAR(D)
- B(i);N_GUARD::QAR(D)
- Refutation
- S(f);XS(E)
- Try
- S(E);
- Threat
- R1(C)
- Vars
- R(a);N_GUARD,XP(B)::QAB(D)
- P(e);OGATEB,XR(C)::QAR(D)
- S(f);SBLOCK::S(E)
- Refutation
- B(i);
- Try
- S(E);
- Threat
- R1(C)
- Vars
- P(e);OGATEB,XR(C)::QAR(D)
- B(i);N_GUARD::QAR(D)
- S(f);SBLOCK::S(H)
- Refutation
- R(a);XP(B)
- Try
- R(C);CHECK
- Refutation
- P(c);XR(C)
- Try
- Q(D);
- Threat
- DUALS(4)
- Vars
- S(h);::S(H)
- Refutation
- S(h);XQ(D)
- Try
- Actual
- S(E);
- Threat
- R1(C)
- Vars
- R(a);N_GUARD,XP(B)::QAB(D)
- P(e);OGATEB,XR(C)::QAR(D)
- B(i);N_GUARD::QAR(D)
- S(f);SBLOCK::S(H)
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).