MESON Chess Problem Database
Problem Display
PID: 64886 (4nBn1/2r2P1K/5kBp/8/8/1Q3N2/8/b7 w - - 0 1)
Funk, Jacob E
Good Companions (August), 1921
#2
6 + 6
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.fxe8S#
- 2.fxg8S#
- 1...Rc2
- 2.fxe8S#
- 2.fxg8S#
- 1...Rc3
- 2.fxe8S#
- 2.fxg8S#
- 1...Rc5
- 2.fxe8S#
- 2.fxg8S#
- 1...Rc6
- 2.fxe8S#
- 2.fxg8S#
- 1...Rxf7+
- 2.Qxf7#
- 1...Rc8
- 2.fxg8S#
- 1...Sg7
- 2.fxg8S#
- 1...Se7
- 2.fxe8S#
- 1...Rc1
- Tries
- 1.Bg7+?
- 1...Sxg7
- 2.fxg8S#
- 1...Ke7!
- 1...Sxg7
- 1.Qb6+?
- 1...Sd6
- 2.Qxd6#
- 1...Rc6!
- 1...Sd6
- 1.Bg7+?
- Keys
- 1.Qd5!
- threat
- 2.Qf5#
- 1...Rxf7+
- 2.Qxf7#
- 1...Rc5
- 2.fxe8S#
- 2.fxg8S#
- 1...Be5
- 2.Qxe5#
- 1...Sd6
- 2.Qxd6#
- 1...Sg7
- 2.fxg8S#
- 1...Se7
- 2.fxe8S#
- threat
- 1.Qd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(d);CHECK,OGATE,XP(D)::QAR1(A),XR(d)
- R(d);N_PINP(D)::PXS(f)=S
- S(e);N_PINP(D)::PXS(f)=S
- S(f);N_PINP(D)::PXS(e)=S
- Tries
- Try
- B(F);CHECK,N_SPINP(D)
- Vars
- S(e);N_GUARD,S_CUTR(d),XB(F)::PXS(f)=S
- Refutation
- K(b);S_FLIGHT
- Try
- Q(A);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAR2(A),XS(e)
- Refutation
- R(d);N_PINP(D),P_SPINR(d)
- Try
- Actual
- Q(A);
- Threat
- QAR1(A)
- Vars
- R(d);CHECK,OGATE,XP(D)::QAR1(A),XR(d)
- B(a);N_GUARD::QAB1(A),XB(a)
- S(e);N_GUARD::QAR2(A),XS(e)
- S(e);N_PINP(D)::PXS(f)=S
- S(f);N_PINP(D)::PXS(e)=S
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).