MESON Chess Problem Database
Problem Display
PID: 51044 (3R4/1Q6/B4N2/4q3/p2b4/2k5/P1p5/K1Bn4 w - - 0 1)
Spens, Sheriff Walter Cook
Burnley Express, 1879
#2
7 + 6
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Se4#
- 2.Sd5#
- 1...Qg3
- 2.Se4#
- 2.Sd5#
- 1...Qf4
- 2.Sd5#
- 1...Qd6
- 2.Se4#
- 1...Qc7
- 2.Se4#
- 2.Sd5#
- 1...Qb8
- 2.Se4#
- 2.Sd5#
- 1...Qe1
- 2.Sd5#
- 1...Qe2
- 2.Sd5#
- 1...Qe3
- 2.Sd5#
- 1...Qe4
- 2.Sxe4#
- 1...Qa5
- 2.Se4#
- 1...Qc5
- 2.Se4#
- 1...Qd5
- 2.Sxd5#
- 1...Qg5
- 2.Se4#
- 1...Qh5
- 2.Se4#
- 1...Qe7
- 2.Sd5#
- 1...Qe8
- 2.Sd5#
- 1...Bg1
- 2.Bd2#
- 2.Rd3#
- 1...Bf2
- 2.Bd2#
- 2.Rd3#
- 1...Be3
- 2.Rd3#
- 1...Bc5
- 2.Bd2#
- 2.Rd3#
- 1...Bb6
- 2.Bd2#
- 1...Ba7
- 2.Bd2#
- 2.Rd3#
- 1...Sb2
- 2.Qxb2#
- 1...Sf2
- 2.Qb2#
- 1...Se3
- 2.Qb2#
- 1...a3
- 2.Qb3#
- 1...Qh2
- Tries
- 1.Rc8+?
- 1...Qc7
- 2.Se4#
- 2.Sd5#
- 1...Qc5
- 2.Se4#
- 2.Sd5#
- 1...Bc5!
- 1...Qc7
- 1.Qc6+?
- 1...Qc5
- 2.Sd5#
- 1...Bc5
- 2.Bd2#
- 1...Kb4+!
- 1...Qc5
- 1.Qc8+?
- 1...Qc7
- 2.Sd5#
- 1...Qc5
- 2.Sd5#
- 1...Bc5
- 2.Bd2#
- 1...Kb4+!
- 1...Qc7
- 1.Qb5?
- threat
- 2.Qc4#
- 1...Qc7
- 2.Se4#
- 2.Sd5#
- 1...Qe2
- 2.Sd5#
- 2.Qa5#
- 1...Qc5
- 2.Se4#
- 1...Qd5
- 2.Sxd5#
- 1...Qe6
- 2.Qa5#
- 1...Sb2
- 2.Qxb2#
- 1...Se3
- 2.Qb2#
- 1...Qxb5!
- threat
- 1.Qc7+?
- 1...Qxc7
- 2.Sd5#
- 1...Qc5
- 2.Sd5#
- 1...Bc5
- 2.Bd2#
- 1...Kb4+!
- 1...Qxc7
- 1.a3?
- threat
- 2.Qb4#
- 1...Bb6
- 2.Rd3#
- 1...Qd6
- 2.Se4#
- 1...Qb8
- 2.Se4#
- 2.Sd5#
- 1...Qa5
- 2.Se4#
- 1...Qc5
- 2.Se4#
- 1...Qe7
- 2.Sd5#
- 1...Bc5
- 2.Bd2#
- 2.Rd3#
- 1...Qb5!
- threat
- 1.Rc8+?
- Keys
- 1.Qb6!
- 1...Qxf6
- 2.Qa5#
- 1...Bxb6
- 2.Bd2#
- 1...Qb5
- 2.Qxd4#
- 1...Qh2
- 2.Se4#
- 2.Sd5#
- 2.Qxd4#
- 2.Qa5#
- 1...Qg3
- 2.Se4#
- 2.Sd5#
- 2.Qxd4#
- 2.Qa5#
- 1...Qf4
- 2.Sd5#
- 2.Qa5#
- 1...Qd6
- 2.Se4#
- 1...Qc7
- 2.Se4#
- 2.Sd5#
- 2.Qxd4#
- 1...Qb8
- 2.Se4#
- 2.Sd5#
- 2.Qxd4#
- 1...Qe1
- 2.Sd5#
- 2.Qxd4#
- 2.Qa5#
- 1...Qe2
- 2.Sd5#
- 2.Qxd4#
- 2.Qa5#
- 1...Qe3
- 2.Sd5#
- 2.Qa5#
- 1...Qe4
- 2.Sxe4#
- 2.Qa5#
- 1...Qa5
- 2.Se4#
- 2.Qxd4#
- 2.Qxa5#
- 1...Qc5
- 2.Se4#
- 1...Qd5
- 2.Sxd5#
- 1...Qf5
- 2.Qxd4#
- 1...Qg5
- 2.Se4#
- 2.Qxd4#
- 1...Qh5
- 2.Se4#
- 2.Qxd4#
- 1...Qe6
- 2.Qxd4#
- 2.Qa5#
- 1...Qe7
- 2.Sd5#
- 2.Qxd4#
- 1...Qe8
- 2.Sd5#
- 2.Qxd4#
- 2.Qa5#
- 1...Bg1
- 2.Bd2#
- 2.Rd3#
- 1...Bf2
- 2.Bd2#
- 2.Rd3#
- 1...Be3
- 2.Rd3#
- 1...Bc5
- 2.Bd2#
- 2.Rd3#
- 1...Sb2
- 2.Qxb2#
- 1...Sf2
- 2.Qb2#
- 1...Se3
- 2.Qb2#
- 1...a3
- 2.Qb3#
- 1...Qxf6
- 1.Qb6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 10
- Sets
- Q(f);N_GUARD::S(E)
- Q(f);N_GUARD::S(E),XQ(f)
- B(e);OGATE::R1(G)
- B(e);::B(B)
- S(a);N_GUARD::QAB1(F),XS(a)
- S(a);N_GUARD::QAB1(F)
- P(d);N_GUARD::QAR1(F)
- Tries
- Try
- R(G);CHECK
- Refutation
- B(e);P_SPINB(e)
- Try
- Q(F);CHECK
- Vars
- Q(f);P_SPINQ(f)::S(E)
- B(e);P_SPINB(e)::B(B)
- Refutation
- K(c);CHECK,S_FLIGHT
- Try
- Q(F);CHECK
- Vars
- Q(f);P_SPINQ(f)::S(E)
- B(e);P_SPINB(e)::B(B)
- Refutation
- K(c);CHECK,S_FLIGHT
- Try
- Q(F);
- Threat
- QAR1(F)
- Vars
- Q(f);N_GUARD::S(E)
- Q(f);N_GUARD::S(E),XQ(f)
- Q(f);N_GUARD::QAB(F)
- S(a);N_GUARD::QAB1(F),XS(a)
- S(a);N_GUARD::QAB1(F)
- Refutation
- Q(f);XQ(F)
- Try
- Q(F);CHECK
- Vars
- Q(f);XQ(F)::S(E)
- Q(f);P_SPINQ(f)::S(E)
- B(e);P_SPINB(e)::B(B)
- Refutation
- K(c);CHECK,S_FLIGHT
- Try
- P(C);
- Threat
- QAB1(F)
- Vars
- B(e);OGATE::R1(G)
- Q(f);N_GUARD::S(E)
- Refutation
- Q(f);
- Try
- Actual
- Q(F);
- Vars
- Q(f);N_GUARD,XS(E)::QAB(F)
- B(e);XQ(F)::B(B)
- Q(f);N_GUARD::QAB1(F),XB(e)
- Q(f);N_GUARD::S(E)
- Q(f);N_GUARD::S(E),XQ(f)
- B(e);OGATE::R1(G)
- S(a);N_GUARD::QAB1(F),XS(a)
- S(a);N_GUARD::QAB1(F)
- P(d);N_GUARD::QAR1(F)
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).