MESON Chess Problem Database
Problem Display
PID: 234188 (8/p1K1B3/B1pNp3/2k5/4Q3/6qb/1R6/2r5 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Berliner Morgenpost, 1965
#2
6 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qf2
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qe5#
- 1...Qh4
- 2.Sb7#
- 2.Qe5#
- 1...Qe5
- 2.Qxe5#
- 1...Qxd6+
- 2.Bxd6#
- 1...Qg1
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qe5#
- 1...Qg2
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qa3
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qe5#
- 1...Qb3
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qc3
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qd3
- 2.Sb7#
- 1...Qe3
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qf3
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qg4
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qe5#
- 1...Qg5
- 2.Sb7#
- 1...Qg6
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qe5#
- 1...Qg7
- 2.Sb7#
- 2.Sf7#
- 1...Qg8
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qe5#
- 1...Ra1
- 2.Qc4#
- 1...Rb1
- 2.Qc4#
- 1...Rd1
- 2.Qc4#
- 1...Re1
- 2.Qc4#
- 1...Rf1
- 2.Qc4#
- 1...Rg1
- 2.Qc4#
- 1...Rh1
- 2.Qc4#
- 1...Rc4
- 2.Qxc4#
- 1...e5
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qe1
- Tries
- 1.Kd7?
- threat
- 2.Sb7#
- 1...Qxd6+
- 2.Bxd6#
- 1...e5+
- 2.Sf5#
- 1...Qb3
- 2.Sc4#
- 2.Sc8#
- 1...Rd1
- 2.Qc4#
- 1...Qd3!
- threat
- 1.Ra2?
- threat
- 2.Ra5#
- 1...Qxd6+
- 2.Bxd6#
- 1...Rc4
- 2.Qxc4#
- 1...Qe1
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qa3
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qb3
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qc3
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qd3
- 2.Sb7#
- 1...Ra1
- 2.Qc4#
- 1...Rb1
- 2.Qc4#
- 1...Bf1!
- threat
- 1.Rc2+?
- 1...Qc3
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Rxc2!
- 1...Qc3
- 1.Rb6?
- threat
- 2.Rxc6#
- 1...Qxd6+
- 2.Bxd6#
- 1...Rc4
- 2.Qxc4#
- 1...axb6!
- threat
- 1.Qe3+?
- 1...Kd5
- 2.Rd2#
- 1...Qxe3!
- 1...Kd5
- 1.Kd7?
- Keys
- 1.Kc8!
- threat
- 2.Sb7#
- 1...Qg8+
- 2.Se8#
- 1...e5+
- 2.Sf5#
- 1...Qxd6
- 2.Qe5#
- 1...Qb3
- 2.Sc4#
- threat
- 1.Kc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- Q(b);N_GUARD::QAR2(B),XQ(b)
- Q(b);CHECK,OGATE,P_SPINQ(b),XS(D)::B(F),XQ(b)
- Q(b);N_PINS(D)::B(F)+S(D),DCHECK
- R(a);N_GUARD::QAR1(B)
- R(a);N_GUARD::QAR1(B),XR(a)
- Tries
- Try
- K(E);N_SPINS(D),P-FLIGHT
- Threat
- B(F)+S(D),DCHECK
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XS(D)::B(F),XQ(b)
- P(f);CHECK,S_CUTQ(b)::B(F)+S(D)
- R(a);N_GUARD,P_PINS(D)::QAR1(B)
- Refutation
- Q(b);P_PINS(D)
- Try
- R(A);
- Threat
- R(A)
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XS(D)::B(F),XQ(b)
- R(a);N_GUARD::QAR1(B),XR(a)
- Q(b);N_PINS(D)::B(F)+S(D),DCHECK
- R(a);N_GUARD::QAR1(B)
- Refutation
- B(c);
- Try
- R(A);CHECK
- Refutation
- R(a);XR(A)
- Try
- R(A);
- Threat
- R1(A),XP(e)
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XS(D)::B(F),XQ(b)
- R(a);N_GUARD::QAR1(B),XR(a)
- Refutation
- P(g);XR(A)
- Try
- Q(B);CHECK
- Vars
- K(d);P-FLIGHT::R(A)
- Refutation
- Q(b);N_PINS(D),XQ(B)
- Try
- Actual
- K(E);N_SPINS(D),P-FLIGHT
- Threat
- B(F)+S(D),DCHECK
- Vars
- Q(b);CHECK,N_GUARD::B(F)+S(D)
- P(f);CHECK,S_CUTQ(b)::B(F)+S(D)
- Q(b);N_GUARD,P_SPINQ(b),XS(D)::QAR2(B)
- Q(b);N_GUARD::B(F)+S(D)
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).