MESON Chess Problem Database
Problem Display
PID: 59568 (4K3/2p2N2/6n1/2BN2Q1/4k3/5r2/4P3/8 w - - 0 1)
Beale, John Lindsay
O'Keefe, John James
The Problemist, 1950
#2
6 + 4
| 56 | The Problemist | 2005 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Sc3#
- 1...Rf2
- 2.Sc3#
- 1...Ra3
- 2.Sf6#
- 1...Rb3
- 2.Sf6#
- 1...Rc3
- 2.Sxc3#
- 2.Sf6#
- 1...Rd3
- 2.Sf6#
- 1...Re3
- 2.Sf6#
- 1...Rg3
- 2.Sf6#
- 1...Rh3
- 2.Sf6#
- 1...Rf4
- 2.Sc3#
- 1...Rf5
- 2.Sc3#
- 1...Rf6
- 2.Sc3#
- 2.Sxf6#
- 1...Rxf7
- 2.Sc3#
- 1...Sf4
- 2.Sf6#
- 2.Qe5#
- 1...Sh4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Se7
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...c6
- 2.Sd6#
- 1...Rf1
- Tries
- 1.Kd8?
- 1...Rxf7
- 2.Sc3#
- 1...Rf5
- 2.Sc3#
- 1...Se5
- 2.Qxe5#
- 1...Rf1
- 2.Sc3#
- 1...Rf2
- 2.Sc3#
- 1...Ra3
- 2.Sf6#
- 1...Rb3
- 2.Sf6#
- 1...Rc3
- 2.Sxc3#
- 2.Sf6#
- 1...Re3
- 2.Sf6#
- 1...Rg3
- 2.Sf6#
- 1...Rh3
- 2.Sf6#
- 1...Rf4
- 2.Sc3#
- 1...Rf6
- 2.Sc3#
- 2.Sxf6#
- 1...Sf4
- 2.Sf6#
- 2.Qe5#
- 1...Sh4
- 2.Qe5#
- 1...Se7
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...c6
- 2.Sd6#
- 1...Rd3!
- 1...Rxf7
- 1.Ba7?
- 1...Rxf7
- 2.Sc3#
- 1...Rf5
- 2.Sc3#
- 1...Se5
- 2.Qxe5#
- 1...Rf1
- 2.Sc3#
- 1...Rf2
- 2.Sc3#
- 1...Ra3
- 2.Sf6#
- 1...Rb3
- 2.Sf6#
- 1...Rc3
- 2.Sxc3#
- 2.Sf6#
- 1...Rd3
- 2.Sf6#
- 1...Re3
- 2.Sf6#
- 1...Rg3
- 2.Sf6#
- 1...Rh3
- 2.Sf6#
- 1...Rf4
- 2.Sc3#
- 1...Rf6
- 2.Sc3#
- 2.Sxf6#
- 1...Sf4
- 2.Sf6#
- 2.Qe5#
- 1...Sh4
- 2.Qe5#
- 1...Se7
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...c6
- 2.Sd6#
- 1...c5!
- 1...Rxf7
- 1.Qg4+?
- 1...Rf4
- 2.Sc3#
- 2.Sf6#
- 1...Sf4
- 2.Sf6#
- 1...Kxd5!
- 1...Rf4
- 1.Kd8?
- Keys
- 1.Se7!
- 1...Rxf7
- 2.Qe3#
- 1...Sxe7
- 2.Qe5#
- 1...Rf1
- 2.Qe3#
- 1...Rf2
- 2.Qe3#
- 1...Ra3
- 2.Qf5#
- 1...Rb3
- 2.Qf5#
- 1...Rc3
- 2.Qf5#
- 1...Rd3
- 2.Qf5#
- 1...Re3
- 2.Qxe3#
- 2.Qf5#
- 1...Rg3
- 2.Qf5#
- 1...Rh3
- 2.Qf5#
- 1...Rf4
- 2.Qd5#
- 1...Rf5
- 2.Qe3#
- 2.Qxf5#
- 1...Rf6
- 2.Qe3#
- 1...Sf4
- 2.Qe5#
- 2.Qf5#
- 1...Sh4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf8
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...c6
- 2.Sd6#
- 1...Rxf7
- 1.Se7!
This is a version of 265
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- R(a);N_GUARD::S(C)
- R(a);N_GUARD,XS(E)::S(C)
- S(c);N_GUARD::QAR1(D)
- S(c);N_GUARD::QAR1(D),XS(c)
- P(d);N_GUARD::S(E)
- Tries
- Try
- K(F);P-FLIGHT
- Vars
- R(a);N_GUARD,XS(E)::S(C)
- R(a);N_GUARD::S(C)
- S(c);N_GUARD::QAR1(D),XS(c)
- S(c);N_GUARD::QAR1(D)
- P(d);N_GUARD::S(E)
- Refutation
- R(a);P_PINS(C)
- Try
- B(B);
- Vars
- R(a);N_GUARD,XS(E)::S(C)
- R(a);N_GUARD::S(C)
- S(c);N_GUARD::QAR1(D),XS(c)
- S(c);N_GUARD::QAR1(D)
- P(d);N_GUARD::S(E)
- Refutation
- P(d);
- Try
- Q(D);CHECK
- Vars
- S(c);P_SPINS(c)::S(C)
- Refutation
- K(b);S_FLIGHT,XS(C)
- Try
- Actual
- S(C);
- Vars
- R(a);N_GUARD,XS(E)::QAR1(D)
- S(c);N_GUARD,XS(C)::QAR1(D)
- R(a);N_GUARD::QAR1(D)
- R(a);N_GUARD::QAB1(D)
- R(a);SBLOCK::QAB1(D)
- S(c);N_GUARD::QAR1(D)
- S(c);N_GUARD::QAR1(D),XS(c)
- P(d);N_GUARD::S(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).