MESON Chess Problem Database
Problem Display
PID: 235136 (Q1B2r1b/4R2b/3Bpk2/4N2p/3N3K/8/8/5n2 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schach, 2017
#2
7 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rf7
- 2.Rxf7#
- 1...Rxc8
- 2.Rf7#
- 1...Rd8
- 2.Rf7#
- 1...Re8
- 2.Rf7#
- 1...Rg8
- 2.Rf7#
- 1...Bg6
- 2.Sd7#
- 1...Bg8
- 2.Qf3#
- 1...Bg7
- 2.Rxe6#
- 1...Rf7
- Tries
- 1.Bxe6?
- threat
- 2.Qxf8#
- 1...Rxa8
- 2.Rf7#
- 1...Rf7
- 2.Rxf7#
- 1...Rb8
- 2.Rf7#
- 1...Rc8
- 2.Rf7#
- 1...Rd8
- 2.Rf7#
- 1...Re8
- 2.Rf7#
- 1...Rg8
- 2.Rf7#
- 1...Bg6
- 2.Sd7#
- 1...Bg8
- 2.Qf3#
- 1...Bg7!
- threat
- 1.Bb7?
- threat
- 2.Qxf8#
- 1...Rxa8
- 2.Rf7#
- 1...Rf7
- 2.Rxf7#
- 1...Rb8
- 2.Rf7#
- 1...Rc8
- 2.Rf7#
- 1...Rd8
- 2.Rf7#
- 1...Re8
- 2.Rf7#
- 1...Rg8
- 2.Rf7#
- 1...Bg6
- 2.Sd7#
- 1...Bg7
- 2.Rxe6#
- 1...Bg8!
- threat
- 1.Bd7?
- threat
- 2.Qxf8#
- 1...Rxa8
- 2.Rf7#
- 1...Rf7
- 2.Rxf7#
- 1...Rb8
- 2.Rf7#
- 1...Rc8
- 2.Rf7#
- 1...Rd8
- 2.Rf7#
- 1...Re8
- 2.Rf7#
- 1...Rg8
- 2.Rf7#
- 1...Bg8
- 2.Qf3#
- 1...Bg7
- 2.Rxe6#
- 1...Bg6!
- threat
- 1.Qg2?
- threat
- 2.Sd7#
- 2.Rxe6#
- 2.Qg5#
- 1...Rd8
- 2.Rxe6#
- 2.Rf7#
- 2.Qg5#
- 1...Re8
- 2.Sd7#
- 2.Rf7#
- 2.Qg5#
- 1...Rg8
- 2.Sd7#
- 2.Rxe6#
- 2.Rf7#
- 1...Bf5
- 2.Sd7#
- 2.Qg5#
- 1...Bg6
- 2.Sd7#
- 2.Qg5#
- 2.Qxg6#
- 1...Bg8
- 2.Sd7#
- 2.Qxf1#
- 2.Qf3#
- 2.Qf2#
- 2.Qg5#
- 2.Qg6#
- 1...Sg3!
- threat
- 1.Qb7?
- threat
- 2.Rxe6#
- 1...Rf7
- 2.Rxf7#
- 1...Re8
- 2.Rf7#
- 1...Bg8
- 2.Qf3#
- 1...Bf5!
- threat
- 1.Qa2?
- threat
- 2.Qxe6#
- 1...Rf7
- 2.Rxf7#
- 1...Bg8
- 2.Qf2#
- 1...Bf5!
- threat
- 1.Bxe6?
- Keys
- 1.Ba6!
- threat
- 2.Qxf8#
- 1...Rxa8
- 2.Rf7#
- 1...Rf7
- 2.Rxf7#
- 1...Rb8
- 2.Rf7#
- 1...Rc8
- 2.Rf7#
- 1...Rd8
- 2.Rf7#
- 1...Re8
- 2.Rf7#
- 1...Rg8
- 2.Rf7#
- 1...Bg6
- 2.Sd7#
- 1...Bg8
- 2.Qf3#
- 1...Bg7
- 2.Rxe6#
- threat
- 1.Ba6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD,XB(G)::R1(E)
- R(f);N_GUARD::R1(E)
- B(e);SBLOCK::S(C)
- B(e);N_GUARD::QAR(F)
- B(g);SBLOCK::R1(E),XP(c)
- Tries
- Try
- B(G);XP(c)
- Threat
- QAR2(F),XR(f)
- Vars
- R(f);N_GUARD,XQ(F)::R1(E)
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD::R1(E)
- B(e);SBLOCK::S(C)
- B(e);N_GUARD::QAR(F)
- Refutation
- B(g);
- Try
- B(G);
- Threat
- QAR2(F),XR(f)
- Vars
- R(f);N_GUARD,XQ(F)::R1(E)
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD::R1(E)
- B(e);SBLOCK::S(C)
- B(g);SBLOCK::R1(E),XP(c)
- Refutation
- B(e);
- Try
- B(G);
- Threat
- QAR2(F),XR(f)
- Vars
- R(f);N_GUARD,XQ(F)::R1(E)
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD::R1(E)
- B(e);N_GUARD::QAR(F)
- B(g);SBLOCK::R1(E),XP(c)
- Refutation
- B(e);
- Try
- Q(F);
- Threat
- DUALS(3)
- Refutation
- S(a);
- Try
- Q(F);
- Threat
- R1(E),XP(c)
- Vars
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD::R1(E)
- B(e);N_GUARD::QAR(F)
- Refutation
- B(e);
- Try
- Q(F);
- Threat
- QAR1(F),XP(c)
- Vars
- R(f);N_GUARD::R1(E),XR(f)
- B(e);N_GUARD::QAR(F)
- Refutation
- B(e);
- Try
- Actual
- B(G);
- Threat
- QAR2(F),XR(f)
- Vars
- R(f);N_GUARD,XQ(F)::R1(E)
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD::R1(E)
- B(e);SBLOCK::S(C)
- B(e);N_GUARD::QAR(F)
- B(g);SBLOCK::R1(E),XP(c)
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).