MESON Chess Problem Database
Problem Display
PID: 159867 (6B1/BKn1p3/3pR3/pp1k4/Q7/3P1P1r/1bNnq3/8 w - - 0 1)
Ahues, Herbert Siegfried Oskar
To Mat, 1965
#2
8 + 10
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Se3#
- 1...Qf1
- 2.Se3#
- 1...Qg2
- 2.Se3#
- 1...Qh2
- 2.Se3#
- 1...Qe3
- 2.Sxe3#
- 1...Bc1
- 2.Qd4#
- 1...Ba3
- 2.Qd4#
- 1...Bd4
- 2.Qxd4#
- 1...Sb1
- 2.Qb3#
- 2.Qa2#
- 1...Sf1
- 2.Qb3#
- 2.Qa2#
- 1...Sb3
- 2.Qxb3#
- 1...Sxf3
- 2.Qb3#
- 2.Qa2#
- 1...Se4
- 2.Qb3#
- 2.Qa2#
- 1...Sxe6
- 2.Qxb5#
- 1...Sa8
- 2.Qxb5#
- 1...Se8
- 2.Qxb5#
- 1...b4
- 2.Qc6#
- 1...Qd1
- Tries
- 1.Kxc7?
- threat
- 2.Qxb5#
- 1...Qxd3
- 2.Rxe7#
- 1...Qf2
- 2.Rxe7#
- 1...Qe3
- 2.Sxe3#
- 1...Ba3
- 2.Qd4#
- 1...Bd4
- 2.Qxd4#
- 1...Sb3
- 2.Qxb3#
- 1...Se4
- 2.Rxe7#
- 2.Qb3#
- 2.Qa2#
- 1...b4
- 2.Qb5#
- 2.Qc6#
- 2.Qxa5#
- 1...bxa4!
- threat
- 1.Rxe2+?
- 1...Se6
- 2.Bxe6#
- 2.Qxb5#
- 1...e6!
- 1...Se6
- 1.Re3+?
- 1...Se6
- 2.Bxe6#
- 2.Qxb5#
- 1...e6!
- 1...Se6
- 1.Re4+?
- 1...Se6
- 2.Bxe6#
- 2.Qxb5#
- 1...e6!
- 1...Se6
- 1.Rxe7+?
- 1...Se6
- 2.Qxb5#
- 1...Qe6!
- 1...Se6
- 1.Qa2+?
- 1...Sb3
- 2.Qxb3#
- 1...Sc4!
- 1...Sb3
- 1.Qf4?
- threat
- 2.Re5#
- 2.Rxd6#
- 1...Qxe6
- 2.Se3#
- 1...Qe5
- 2.Rxe5#
- 1...Be5
- 2.Rxe5#
- 1...Sxe6!
- threat
- 1.d4?
- threat
- 2.Re5#
- 1...Qxe6
- 2.Se3#
- 1...Bxd4
- 2.Qxd4#
- 1...Qe5
- 2.Rxe5#
- 1...Sxe6!
- threat
- 1.f4?
- threat
- 2.Re5#
- 1...Sxe6
- 2.Qxb5#
- 1...Qe5
- 2.Rxe5#
- 1...Be5
- 2.Rxe5#
- 1...Qxe6!
- threat
- 1.Kxc7?
- Keys
- 1.Bd4!
- threat
- 2.Re5#
- 1...Qxe6
- 2.Se3#
- 1...Bxd4
- 2.Qxd4#
- 1...Sxe6
- 2.Qxb5#
- 1...Qe5
- 2.Rxe5#
- threat
- 1.Bd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- Q(c);N_GUARD::S(A)
- Q(c);N_GUARD::S(A),XQ(c)
- B(a);N_GUARD::QAR1(D)
- B(a);N_GUARD::QAR1(D),XB(a)
- S(b);N_GUARD::QAB(D),XS(b)
- S(i);N_GUARD,P_SPINS(i),XR(E)::QAR2(D),XP(f)
- S(i);N_GUARD::QAR2(D),XP(f)
- P(f);OGATE::QAB1(D)
- Tries
- Try
- K(G);P-FLIGHT,XS(i)
- Threat
- QAR2(D),XP(f)
- Vars
- Q(c);N_GUARD,XP(B)::B(H)+R(E),XP(j)
- Q(c);N_GUARD::B(H)+R(E),XP(j)
- Q(c);N_GUARD::S(A),XQ(c)
- B(a);N_GUARD::QAR1(D)
- B(a);N_GUARD::QAR1(D),XB(a)
- S(b);N_GUARD::QAB(D),XS(b)
- Refutation
- P(f);XQ(D)
- Try
- R(E);CHECK,XQ(c)
- Refutation
- P(j);P_SPINP(j)
- Try
- R(E);CHECK
- Refutation
- P(j);P_SPINP(j)
- Try
- R(E);CHECK
- Refutation
- P(j);P_SPINP(j)
- Try
- R(E);CHECK,XP(j)
- Vars
- S(i);P_SPINS(i)::QAR2(D),XP(f)
- Refutation
- Q(c);P_SPINQ(c)
- Try
- Q(D);CHECK
- Vars
- S(b);N_GUARD,P_SPINS(b)::QAB(D),XS(b)
- Refutation
- S(b);P_SPINS(b)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- Q(c);N_GUARD,P_SPINQ(c),XR(E)::S(A)
- Q(c);::B(H)+R(E),DCHECK,XQ(c)
- B(a);::B(H)+R(E),DCHECK,XB(a)
- Refutation
- S(i);P_SPINS(i),XR(E)
- Try
- P(B);
- Threat
- B(H)+R(E),DCHECK
- Vars
- Q(c);N_GUARD,P_SPINQ(c),XR(E)::S(A)
- B(a);OGATE,XP(B)::QAR1(D),XB(a)
- Q(c);::B(H)+R(E),DCHECK,XQ(c)
- Refutation
- S(i);P_SPINS(i),XR(E)
- Try
- P(C);
- Threat
- B(H)+R(E),DCHECK
- Vars
- S(i);N_GUARD,P_SPINS(i),XR(E)::QAR2(D),XP(f)
- Q(c);::B(H)+R(E),DCHECK,XQ(c)
- B(a);::B(H)+R(E),DCHECK,XB(a)
- Refutation
- Q(c);P_SPINQ(c),XR(E)
- Try
- Actual
- B(F);
- Threat
- B(H)+R(E),DCHECK
- Vars
- Q(c);N_GUARD,P_SPINQ(c),XR(E)::S(A)
- B(a);OGATE,XB(F)::QAR1(D),XB(a)
- S(i);N_GUARD,P_SPINS(i),XR(E)::QAR2(D),XP(f)
- Q(c);::B(H)+R(E),DCHECK,XQ(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).