MESON Chess Problem Database
Problem Display
PID: 234196 (5r1b/2N1B3/1R1Np1pQ/4kP2/r7/3pP2p/6bK/8 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Heilbronner Stimme, 1981
#2
8 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qf4#
- 1...Ra2
- 2.Qf4#
- 1...Ra3
- 2.Qf4#
- 1...Re4
- 2.Rb5#
- 1...Rf4
- 2.Qxf4#
- 1...Ra5
- 2.Qf4#
- 1...Ra6
- 2.Qf4#
- 1...Ra7
- 2.Qf4#
- 1...Raa8
- 2.Qf4#
- 1...Bf1
- 2.Rb5#
- 1...Be4
- 2.Qf4#
- 1...gxf5
- 2.Qxe6#
- 1...g5
- 2.Qxe6#
- 1...Ra1
- Tries
- 1.Sc4+?
- 1...Ke4
- 2.Qf4#
- 1...Kxf5
- 2.Qf4#
- 1...Rxc4!
- 1...Ke4
- 1.Qg7+?
- 1...Rf6
- 2.Bxf6#
- 1...Bxg7!
- 1...Rf6
- 1.Qxh8+?
- 1...Rf6
- 2.Bxf6#
- 2.Qxf6#
- 1...Rxh8!
- 1...Rf6
- 1.Sc4+?
- Keys
- 1.Se4!
- threat
- 2.Qf4#
- 1...Kxe4
- 2.Qf4#
- 1...Kxf5
- 2.Qf4#
- 1...Rxe4
- 2.Rb5#
- 1...Rxf5
- 2.Rxe6#
- 1...g5
- 2.Qxe6#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- R(d);N_GUARD::QAB1(F)
- R(d);S_CUTB(a)::R(D)
- R(d);N_GUARD::QAB1(F),XR(d)
- B(a);N_GUARD::R(D)
- B(a);S_CUTR(d)::QAB1(F)
- P(g);OGATE,XP(C)::QAR1(F),XP(f)
- P(g);OGATE::QAR1(F),XP(f)
- Tries
- Try
- S(E);CHECK
- Vars
- K(e);P-FLIGHT::QAR1(F)
- K(e);P-FLIGHT,XP(C)::QAR1(F)
- Refutation
- R(d);XS(E)
- Try
- Q(F);CHECK
- Vars
- R(h);N_GUARD,P_SPINR(h)::B(H),XR(h)
- Refutation
- B(i);XQ(F)
- Try
- Q(F);CHECK,XB(i)
- Refutation
- R(h);XQ(F)
- Try
- Actual
- S(E);
- Threat
- QAB1(F)
- Vars
- K(e);P-FLIGHT,XS(E)::QAR1(F)
- K(e);P-FLIGHT,XP(C)::QAR1(F)
- R(d);SBLOCK,XS(E)::R(D)
- R(h);SBLOCK,XP(C)::R1(D),XP(f)
- P(g);OGATE::QAR1(F),XP(f)
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).