MESON Chess Problem Database
Problem Display
PID: 12098 (2b5/3q4/5p2/2R4p/R2N1NkP/5pP1/2Bp3K/8 w - - 0 1)
Quack, Godfrey C
The Problemist, 1974
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...f2
- 2.Bd1#
- 1...f2
- Tries
- 1.Sf5?
- threat
- 2.Se3#
- 2.Sh6#
- 1...f2
- 2.Bd1#
- 1...d1S
- 2.Sh6#
- 1...Qe6
- 2.Sxe6#
- 2.Sh6#
- 1...Qe8
- 2.Sh6#
- 1...Qd3
- 2.Sxd3#
- 2.Sh6#
- 1...Qd4
- 2.Sh6#
- 1...Qe7
- 2.Se6#
- 2.Sh6#
- 1...Qg7
- 2.Se2#
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sd5#
- 2.Se6#
- 2.Sg6#
- 2.Se3#
- 1...Qh7
- 2.Se2#
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sd5#
- 2.Se6#
- 2.Sg6#
- 2.Se3#
- 1...Qxf5!
- threat
- 1.Sd3?
- threat
- 2.Sf2#
- 1...f2
- 2.Sxf2#
- 2.Bd1#
- 1...d1S!
- threat
- 1.Sh3?
- threat
- 2.Sf2#
- 1...f2
- 2.Sxf2#
- 2.Bd1#
- 1...d1S!
- threat
- 1.Sd5?
- threat
- 2.Sb5#
- 2.Sc6#
- 2.Se3#
- 2.Sxf6#
- 1...Qxa4
- 2.Se3#
- 2.Sxf6#
- 1...d1Q
- 2.Se3#
- 2.Sxf6#
- 1...d1S
- 2.Sb5#
- 2.Sc6#
- 2.Sxf6#
- 1...d1R
- 2.Se3#
- 2.Sxf6#
- 1...Qb5
- 2.Sxb5#
- 2.Se3#
- 2.Sxf6#
- 1...Qf5
- 2.Sxf5#
- 2.Se3#
- 1...Qc6
- 2.Sb5#
- 2.Sxc6#
- 2.Se3#
- 1...Qe6
- 2.Sxe6#
- 1...Qe8
- 2.Sxf6#
- 1...Qd6
- 2.Se3#
- 1...Qa7
- 2.Se3#
- 2.Sxf6#
- 1...Qb7
- 2.Sb5#
- 2.Se3#
- 2.Sxf6#
- 1...Qc7
- 2.Se3#
- 2.Sxf6#
- 1...Qe7
- 2.Se6#
- 1...Qf7
- 2.Se2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 2.Se3#
- 1...Qg7
- 2.Se2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 2.Se3#
- 1...Qh7
- 2.Sf5#
- 2.Se3#
- 2.Sxf6#
- 1...Qd8
- 2.Se2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 2.Se3#
- 1...Ba6
- 2.Sb5#
- 2.Se3#
- 2.Sxf6#
- 1...f2
- 2.Se3#
- 2.Sxf6#
- 2.Bd1#
- 1...f5
- 2.Se3#
- 2.Sf6#
- 1...Qxd5!
- threat
- 1.Sfe6?
- threat
- 2.Bf5#
- 1...Qxe6
- 2.Sxe6#
- 1...Qh7
- 2.Sf5#
- 1...f5
- 2.Bxf5#
- 1...Qd5!
- threat
- 1.Sf5?
- Keys
- 1.Sde6!
- threat
- 2.Bf5#
- 1...Qxe6
- 2.Sxe6#
- 1...f2
- 2.Bd1#
- 1...Qd3
- 2.Sxd3#
- 1...Qd5
- 2.Sxd5#
- 1...Qh7
- 2.Sg6#
- 1...f5
- 2.Bxf5#
- threat
- 1.Sde6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- P(b);OGATEB::B(A)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- P(b);OGATEB::B(A)
- P(a);::S(E)
- Q(f);::S(E)
- Refutation
- Q(f);XS(E)
- Try
- S(F);
- Threat
- S(F)
- Refutation
- P(a);
- Try
- S(F);
- Threat
- S(F)
- Refutation
- P(a);
- Try
- S(F);
- Threat
- DUALS(4)
- Vars
- Q(f);N_GUARD::R(D)+S(E),XQ(f)
- Q(f);::S(F),XP(e)
- Q(f);P_PINP(C)::S(F)
- Q(f);N_GUARD::R(D)+S(E)
- Refutation
- Q(f);XS(F)
- Try
- S(F);
- Threat
- B(A)
- Vars
- Q(f);XS(F)::R(D)+S(E),XQ(f)
- Q(f);N_GUARD::R(D)+S(E)
- P(e);::B(A),XP(e)
- Refutation
- Q(f);
- Try
- Actual
- S(E);
- Threat
- B(A)
- Vars
- Q(f);XS(E)::R(D)+S(F),XQ(f)
- P(b);OGATEB::B(A)
- Q(f);N_GUARD::R(D)+S(F),XQ(f)
- Q(f);N_GUARD::R(D)+S(F)
- P(e);::B(A),XP(e)
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).