MESON Chess Problem Database
Problem Display
PID: 4658 (7Q/k2N4/1r6/1p6/1N6/1K6/8/8 w - - 0 1)
Loyd, Sam
Sunny South, 1885
#2
4 + 3
SOLUTION
- SOUND
- Sets
- 1...Kb7
- 2.Qb8#
- 1...Ra6
- 2.Qb8#
- 1...Rc6
- 2.Qb8#
- 1...Rd6
- 2.Qb8#
- 1...Re6
- 2.Qb8#
- 1...Rf6
- 2.Qb8#
- 1...Rg6
- 2.Qb8#
- 1...Rh6
- 2.Qb8#
- 1...Rb7
- 2.Qa1#
- 1...Rb8
- 2.Qxb8#
- 1...Kb7
- Tries
- 1.Kb2?
- 1...Kb7
- 2.Qb8#
- 1...Rb8
- 2.Qxb8#
- 1...Ra6
- 2.Qb8#
- 1...Rc6
- 2.Qb8#
- 1...Rd6
- 2.Qb8#
- 1...Re6
- 2.Qb8#
- 1...Rf6
- 2.Qb8#
- 1...Rg6
- 2.Qb8#
- 1...Rh6
- 2.Qb8#
- 1...Rb7!
- 1...Kb7
- 1.Kc2?
- 1...Kb7
- 2.Qb8#
- 1...Rb8
- 2.Qxb8#
- 1...Rb7
- 2.Qa1#
- 1...Ra6
- 2.Qb8#
- 1...Rd6
- 2.Qb8#
- 1...Re6
- 2.Qb8#
- 1...Rf6
- 2.Qb8#
- 1...Rg6
- 2.Qb8#
- 1...Rh6
- 2.Qb8#
- 1...Rc6+!
- 1...Kb7
- 1.Qa1+?
- 1...Ra6
- 2.Qxa6#
- 1...Kb7!
- 1...Ra6
- 1.Qc8?
- 1...Rb8
- 2.Qa6#
- 2.Qxb8#
- 1...Ra6
- 2.Qxa6#
- 2.Qb8#
- 1...Rc6
- 2.Sxc6#
- 2.Qb8#
- 1...Rd6
- 2.Qb8#
- 1...Re6
- 2.Qb8#
- 1...Rf6
- 2.Qb8#
- 1...Rg6
- 2.Qb8#
- 1...Rh6
- 2.Qb8#
- 1...Rb7!
- 1...Rb8
- 1.Qe8?
- 1...Kb7
- 2.Qb8#
- 1...Rb8
- 2.Qxb8#
- 1...Ra6
- 2.Qb8#
- 1...Rc6
- 2.Qb8#
- 1...Rd6
- 2.Qb8#
- 1...Re6
- 2.Qb8#
- 1...Rf6
- 2.Qb8#
- 1...Rg6
- 2.Qb8#
- 1...Rh6
- 2.Qb8#
- 1...Rb7!
- 1...Kb7
- 1.Qf8?
- 1...Kb7
- 2.Qb8#
- 1...Rb8
- 2.Qxb8#
- 1...Ra6
- 2.Qb8#
- 1...Rc6
- 2.Qb8#
- 1...Rd6
- 2.Qb8#
- 1...Re6
- 2.Qb8#
- 1...Rf6
- 2.Qb8#
- 1...Rg6
- 2.Qb8#
- 1...Rh6
- 2.Qb8#
- 1...Rb7!
- 1...Kb7
- 1.Qg8?
- 1...Kb7
- 2.Qb8#
- 1...Rb8
- 2.Qxb8#
- 1...Ra6
- 2.Qb8#
- 1...Rc6
- 2.Qb8#
- 1...Rd6
- 2.Qb8#
- 1...Re6
- 2.Qb8#
- 1...Rf6
- 2.Qb8#
- 1...Rg6
- 2.Qb8#
- 1...Rh6
- 2.Qb8#
- 1...Rb7!
- 1...Kb7
- 1.Kb2?
- Keys
- 1.Qd8!
- 1...Kb7
- 2.Qb8#
- 1...Rb8
- 2.Qxb8#
- 1...Rb7
- 2.Qa5#
- 1...Ra6
- 2.Qb8#
- 1...Rc6
- 2.Qb8#
- 1...Rd6
- 2.Qb8#
- 1...Re6
- 2.Qb8#
- 1...Rf6
- 2.Qb8#
- 1...Rg6
- 2.Qb8#
- 1...Rh6
- 2.Qb8#
- 1...Kb7
- 1.Qd8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(c);P-FLIGHT::QAR1(D)
- R(b);N_GUARD::QAB1(D)
- R(b);N_GUARD,SBLOCK::QAB1(D)
- R(b);N_GUARD,SBLOCK::QAR(D)
- R(b);N_GUARD::QAB1(D),XR(b)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- K(c);P-FLIGHT::QAR1(D)
- R(b);N_GUARD::QAB1(D),XR(b)
- R(b);N_GUARD::QAB1(D)
- R(b);N_GUARD,SBLOCK::QAB1(D)
- Refutation
- R(b);
- Try
- K(A);S_FLIGHT
- Vars
- K(c);P-FLIGHT::QAR1(D)
- R(b);N_GUARD::QAB1(D),XR(b)
- R(b);N_GUARD,SBLOCK::QAR(D)
- R(b);N_GUARD::QAB1(D)
- R(b);N_GUARD,SBLOCK::QAB1(D)
- Refutation
- R(b);CHECK
- Try
- Q(D);CHECK
- Vars
- R(b);N_GUARD,P_SPINR(b)::QAR1(D),XR(b)
- Refutation
- K(c);P-FLIGHT
- Try
- Q(D);
- Vars
- R(b);N_GUARD::QAB1(D)
- R(b);N_GUARD,SBLOCK::QAB1(D)
- Refutation
- R(b);
- Try
- Q(D);
- Vars
- K(c);P-FLIGHT::QAR1(D)
- R(b);N_GUARD::QAB1(D),XR(b)
- R(b);N_GUARD::QAB1(D)
- R(b);N_GUARD,SBLOCK::QAB1(D)
- Refutation
- R(b);
- Try
- Q(D);
- Vars
- K(c);P-FLIGHT::QAR1(D)
- R(b);N_GUARD::QAB1(D),XR(b)
- R(b);N_GUARD::QAB1(D)
- R(b);N_GUARD,SBLOCK::QAB1(D)
- Refutation
- R(b);
- Try
- Q(D);
- Vars
- K(c);P-FLIGHT::QAR1(D)
- R(b);N_GUARD::QAB1(D),XR(b)
- R(b);N_GUARD::QAB1(D)
- R(b);N_GUARD,SBLOCK::QAB1(D)
- Refutation
- R(b);
- Try
- Actual
- Q(D);
- Vars
- K(c);P-FLIGHT::QAR1(D)
- R(b);N_GUARD::QAB1(D),XR(b)
- R(b);OGATE,SBLOCK::QAR2(D)
- R(b);N_GUARD::QAB1(D)
- R(b);N_GUARD,SBLOCK::QAB1(D)
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).