MESON Chess Problem Database
Problem Display
PID: 160864 (2n5/5B1p/5p2/bN2kN2/1B2P1QK/7n/2qPR3/3r3b w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schweizerische Arbeiter Schachzeitung, 1975
#2
9 + 9
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.d4#
- 1...Rb1
- 2.d4#
- 1...Rc1
- 2.d4#
- 1...Re1
- 2.d4#
- 1...Rf1
- 2.d4#
- 1...Rg1
- 2.d4#
- 1...Sg1
- 2.Qg3#
- 1...Sf2
- 2.Qg3#
- 1...Sg5
- 2.Qg3#
- 1...Sb6
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sa7
- 2.Bd6#
- 1...Se7
- 2.Bd6#
- 1...Ra1
- Tries
- 1.Se3?
- threat
- 2.Qf5#
- 1...Qxe4
- 2.Sc4#
- 1...f5
- 2.Qxf5#
- 1...Rf1
- 2.d4#
- 1...Sd6
- 2.Bxd6#
- 1...Se7
- 2.Bd6#
- 1...Bxe4!
- threat
- 1.Sg3?
- threat
- 2.Qf5#
- 1...f5
- 2.Qxf5#
- 1...Rf1
- 2.d4#
- 1...Sd6
- 2.Bxd6#
- 1...Se7
- 2.Bd6#
- 1...Qxe4!
- threat
- 1.Sfd4?
- threat
- 2.Qf5#
- 1...Qxe4
- 2.Sc6#
- 1...f5
- 2.Qxf5#
- 1...Sd6
- 2.Bxd6#
- 1...Se7
- 2.Bd6#
- 1...Rf1!
- threat
- 1.Sfd6?
- threat
- 2.Qf5#
- 1...Qxe4
- 2.Sc4#
- 1...Sxd6
- 2.Bxd6#
- 1...f5
- 2.Qxf5#
- 1...Rf1
- 2.d4#
- 1...Se7!
- threat
- 1.Sh6?
- threat
- 2.Qf5#
- 1...f5
- 2.Qxf5#
- 1...Rf1
- 2.d4#
- 1...Sd6
- 2.Bxd6#
- 1...Se7
- 2.Bd6#
- 1...Qxe4!
- threat
- 1.Sg7?
- threat
- 2.Qf5#
- 1...f5
- 2.Qxf5#
- 1...Rf1
- 2.d4#
- 1...Sd6
- 2.Bxd6#
- 1...Se7
- 2.Bd6#
- 1...Qxe4!
- threat
- 1.Se3?
- Keys
- 1.Se7!
- threat
- 2.Qf5#
- 1...Qxe4
- 2.Sc6#
- 1...Sxe7
- 2.Bd6#
- 1...f5
- 2.Qxf5#
- 1...Rf1
- 2.d4#
- 1...Sd6
- 2.Bxd6#
- threat
- 1.Se7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- R(a);N_GUARD::P(A)
- S(d);N_GUARD::QAB(E)
- S(i);N_GUARD::B(C)
- S(i);N_GUARD::B(C),XS(i)
- Tries
- Try
- S(H);
- Threat
- QAR1(E)
- Vars
- Q(c);N_GUARD,P_PINQ(E),XP(D)::S(H)
- P(g);::QAR1(E),XP(g)
- R(a);N_GUARD::P(A)
- S(i);N_GUARD::B(C),XS(i)
- S(i);N_GUARD::B(C)
- Refutation
- B(b);XP(D)
- Try
- S(H);
- Threat
- QAR1(E)
- Vars
- P(g);::QAR1(E),XP(g)
- R(a);N_GUARD::P(A)
- S(i);N_GUARD::B(C),XS(i)
- S(i);N_GUARD::B(C)
- Refutation
- Q(c);P_PINQ(E),P_SPINQ(c),XP(D)
- Try
- S(H);
- Threat
- QAR1(E)
- Vars
- Q(c);N_GUARD,P_PINQ(E),P_SPINQ(c),XP(D)::S(H)
- P(g);::QAR1(E),XP(g)
- S(i);N_GUARD::B(C),XS(i)
- S(i);N_GUARD::B(C)
- Refutation
- R(a);
- Try
- S(H);
- Threat
- QAR1(E)
- Vars
- Q(c);N_GUARD,P_PINQ(E),P_SPINQ(c),XP(D)::S(H)
- S(i);OGATE,XS(H)::B(C),XS(i)
- P(g);::QAR1(E),XP(g)
- R(a);N_GUARD::P(A)
- Refutation
- S(i);
- Try
- S(H);
- Threat
- QAR1(E)
- Vars
- P(g);::QAR1(E),XP(g)
- R(a);N_GUARD::P(A)
- S(i);N_GUARD::B(C),XS(i)
- S(i);N_GUARD::B(C)
- Refutation
- Q(c);P_PINQ(E),P_SPINQ(c),XP(D)
- Try
- S(H);
- Threat
- QAR1(E)
- Vars
- P(g);::QAR1(E),XP(g)
- R(a);N_GUARD::P(A)
- S(i);N_GUARD::B(C),XS(i)
- S(i);N_GUARD::B(C)
- Refutation
- Q(c);P_PINQ(E),P_SPINQ(c),XP(D)
- Try
- Actual
- S(H);
- Threat
- QAR1(E)
- Vars
- Q(c);N_GUARD,P_PINQ(E),P_SPINQ(c),XP(D)::S(H)
- S(i);N_GUARD,XS(H)::B(C)
- P(g);::QAR1(E),XP(g)
- R(a);N_GUARD::P(A)
- S(i);N_GUARD::B(C),XS(i)
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).