MESON Chess Problem Database
Problem Display
PID: 59869 (1q1b4/8/8/3n3R/r3k1P1/2B1P1pN/N3Q1P1/1b2R1K1 w - - 0 1)
Sepsford, Mrs Lilian A
Comm., Brisbane Courier, 1924
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Rxe5#
- 1...Qa7
- 2.Re5#
- 1...Qb2
- 2.Re5#
- 1...Qb3
- 2.Re5#
- 1...Qb4
- 2.Re5#
- 1...Qb5
- 2.Re5#
- 1...Qb6
- 2.Re5#
- 1...Qb7
- 2.Re5#
- 1...Qa8
- 2.Re5#
- 1...Qc8
- 2.Re5#
- 1...Rxa2
- 2.Qc4#
- 1...Ra3
- 2.Qc4#
- 1...Rc4
- 2.Qxc4#
- 1...Ra5
- 2.Qc4#
- 1...Ra6
- 2.Qc4#
- 1...Ra7
- 2.Qc4#
- 1...Ra8
- 2.Qc4#
- 1...Bxa2
- 2.Qc2#
- 1...Bc2
- 2.Qxc2#
- 1...Bd3
- 2.Qf3#
- 1...Ba5
- 2.Sg5#
- 1...Bg5
- 2.Sxg5#
- 1...Bb6
- 2.Sg5#
- 1...Bc7
- 2.Sg5#
- 1...Sxc3
- 2.Sxc3#
- 1...Sxe3
- 2.Qxe3#
- 1...Sb4
- 2.Qc4#
- 1...Sf4
- 2.exf4#
- 1...Sc7
- 2.Re5#
- 1...Qe5
- Tries
- 1.Sb4?
- threat
- 2.Qf3#
- 2.Qc4#
- 1...Qxb4
- 2.Re5#
- 1...Sxb4
- 2.Qc4#
- 1...Qf4
- 2.Qc4#
- 1...Qe5
- 2.Rxe5#
- 2.Qf3#
- 1...Qa7
- 2.Re5#
- 2.Qf3#
- 1...Qc7
- 2.Qf3#
- 1...Qb5
- 2.Re5#
- 2.Qf3#
- 1...Qb6
- 2.Re5#
- 2.Qf3#
- 1...Qc8
- 2.Re5#
- 2.Qf3#
- 1...Ba2
- 2.Qd3#
- 2.Qf3#
- 2.Qc2#
- 1...Bd3
- 2.Qxd3#
- 2.Qf3#
- 1...Bb6
- 2.Sg5#
- 2.Qf3#
- 1...Bf6
- 2.Qf3#
- 1...Sb6
- 2.Qf3#
- 1...Rxb4!
- threat
- 1.Sb4?
- Keys
- 1.Qd1!
- threat
- 2.Qxd5#
- 1...Bxa2
- 2.Qc2#
- 1...Sxc3
- 2.Sxc3#
- 1...Sxe3
- 2.Qd5#
- 1...Qe5
- 2.Rxe5#
- 2.Qxb1#
- 1...Qd6
- 2.Qxb1#
- 1...Qb3
- 2.Re5#
- 1...Qb5
- 2.Re5#
- 1...Qb7
- 2.Re5#
- 1...Qa8
- 2.Re5#
- 2.Qxb1#
- 1...Rd4
- 2.Qxd4#
- 1...Ra5
- 2.Qd4#
- 1...Bd3
- 2.Qf3#
- 1...Bg5
- 2.Sxg5#
- 1...Sb4
- 2.Qd4#
- 1...Sf4
- 2.exf4#
- 1...Sb6
- 2.Qxb1#
- 1...Sf6
- 2.Sg5#
- 1...Sc7
- 2.Re5#
- 1...Se7
- 2.Sg5#
- threat
- 1.Qd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 5
- REMOVED MATES = 17
- Sets
- Q(f);N_GUARD::R1(J),XQ(f)
- Q(f);N_GUARD,P_PINP(G)::R1(J)
- Q(f);N_GUARD::R1(J)
- R(c);N_GUARD,XS(C)::QAR2(D)
- R(c);N_GUARD::QAR2(D)
- R(c);N_GUARD::QAR2(D),XR(c)
- B(a);N_GUARD,XS(C)::QAB(D)
- B(a);N_GUARD::QAB(D),XB(a)
- B(a);SBLOCK::QAB1(D)
- B(g);N_GUARD::S(H)
- B(g);N_GUARD::S(H),XB(g)
- B(g);N_GUARD,P_PINP(G)::S(H)
- S(e);XB(F)::S(C),XS(e)
- S(e);OGATE,P_SPINS(e),XP(G)::QAR1(D),XS(e)
- S(e);S_CUTR(c)::QAR2(D)
- S(e);OGATE::QAR(D)+P(G),XS(e)
- S(e);S_CUTQ(f)::R1(J)
- Tries
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- Q(f);N_GUARD,XS(C)::R1(J)
- S(e);XS(C)::QAR2(D)
- Q(f);::QAR2(D)
- Q(f);::QAB1(D)
- B(g);::QAB1(D)
- S(e);::QAB1(D)
- Refutation
- R(c);XS(C)
- Try
- Actual
- Q(D);
- Threat
- QAB1(D),XS(e)
- Vars
- B(a);N_GUARD,XS(C)::QAB(D)
- S(e);XB(F)::S(C),XS(e)
- S(e);P_SPINS(e),XP(G)::QAB1(D)
- Q(f);N_GUARD::QAB(D),XB(a)
- Q(f);N_GUARD::R1(J)
- R(c);N_GUARD::QAR1(D),XR(c)
- R(c);N_GUARD::QAR1(D)
- B(a);SBLOCK::QAB1(D)
- B(g);N_GUARD::S(H),XB(g)
- S(e);S_CUTR(c)::QAR1(D)
- S(e);OGATE::R(A)+P(G),XS(e)
- S(e);S_CUTQ(f)::QAB(D),XB(a)
- S(e);S_CUTB(g)::S(H)
- S(e);S_CUTQ(f)::R1(J)
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).