MESON Chess Problem Database
Problem Display
PID: 109386 (n6K/Q1n1N3/b4p2/1P5B/q4k2/2BP2R1/2Nb3P/5r2 w - - 0 1)
Sim, Malcolm
Canadian Chess Chat, 1954
#2
10 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxc2
- 2.Qd4#
- 1...Qb3
- 2.Qd4#
- 1...Qxb5
- 2.Qd4#
- 1...Qa1
- 2.Qd4#
- 1...Qa2
- 2.Qd4#
- 1...Qa3
- 2.Qd4#
- 1...Qd4
- 2.Qxd4#
- 1...Qa5
- 2.Qd4#
- 1...Ra1
- 2.Qf2#
- 1...Rb1
- 2.Qf2#
- 1...Rc1
- 2.Qf2#
- 1...Rd1
- 2.Qf2#
- 1...Re1
- 2.Qf2#
- 1...Rg1
- 2.Qf2#
- 1...Rh1
- 2.Qf2#
- 1...Rf2
- 2.Qxf2#
- 1...Rf3
- 2.Rg4#
- 1...Be1
- 2.Qe3#
- 1...Bxc3
- 2.Qe3#
- 1...Be3
- 2.Qxe3#
- 1...Bc8
- 2.Qxa4#
- 1...Sb6
- 2.Qxc7#
- 1...f5
- 2.Sg6#
- 1...Qxc2
- Tries
- 1.Se3?
- threat
- 2.Sg2#
- 2.Sg6#
- 1...Bxc3
- 2.Sg6#
- 1...Bxe3
- 2.Qxe3#
- 1...Qd4
- 2.Sg6#
- 2.Qxd4#
- 1...Rg1
- 2.Sg6#
- 1...Rf2
- 2.Sg6#
- 1...Bb7
- 2.Sg6#
- 1...Qe4!
- threat
- 1.Sd4?
- threat
- 2.Se2#
- 2.Sg6#
- 1...Qxd4
- 2.Qxd4#
- 1...Bxc3
- 2.Sg6#
- 1...Rf3
- 2.Se2#
- 1...Qd1
- 2.Sg6#
- 1...Re1
- 2.Sg6#
- 1...Rf2
- 2.Sg6#
- 1...Ke5!
- threat
- 1.Bd1?
- threat
- 2.Rg4#
- 1...Rxd1
- 2.Qf2#
- 1...Bxc3
- 2.Qe3#
- 1...Qd4
- 2.Qxd4#
- 1...Rg1
- 2.Qf2#
- 1...Bc8
- 2.Qxa4#
- 1...f5
- 2.Sg6#
- 1...Rf3!
- threat
- 1.Be2?
- threat
- 2.Rg4#
- 1...Bxc3
- 2.Qe3#
- 1...Qd4
- 2.Qxd4#
- 1...Rg1
- 2.Qf2#
- 1...Bc8
- 2.Qxa4#
- 1...f5
- 2.Sg6#
- 1...Rf3!
- threat
- 1.Qc5?
- threat
- 2.Sg6#
- 2.Bxd2#
- 2.Qd6#
- 2.Qf5#
- 1...Qxc2
- 2.Sg6#
- 2.Qb4#
- 2.Qd4#
- 2.Qd6#
- 2.Qc4#
- 2.Qf5#
- 1...Qxb5
- 2.Sg6#
- 2.Bxd2#
- 2.Qd4#
- 1...Bxc3
- 2.Sg6#
- 2.Qe3#
- 2.Qf5#
- 1...Sxb5
- 2.Sg6#
- 2.Bxd2#
- 2.Qf5#
- 1...Rf3
- 2.Sg6#
- 2.Rxf3#
- 2.Rg4#
- 2.Qd6#
- 2.Qf5#
- 1...Qa3
- 2.Sg6#
- 2.Bxd2#
- 2.Qd4#
- 2.Qc4#
- 2.Qf5#
- 1...Qb4
- 2.Sg6#
- 2.Qxb4#
- 2.Qf5#
- 1...Qd4
- 2.Sg6#
- 2.Qxd4#
- 2.Qf5#
- 1...Qa5
- 2.Sg6#
- 2.Qd4#
- 2.Qd6#
- 2.Qc4#
- 2.Qf5#
- 1...Rd1
- 2.Sg6#
- 2.Rf3#
- 2.Qf2#
- 2.Qd6#
- 2.Qf5#
- 1...Re1
- 2.Sg6#
- 2.Rf3#
- 2.Qf2#
- 2.Qf5#
- 1...Rf2
- 2.Sg6#
- 2.Qxf2#
- 2.Qd6#
- 2.Qf5#
- 1...Bc1
- 2.Sg6#
- 2.Qd6#
- 2.Qf5#
- 1...Be1
- 2.Sg6#
- 2.Qe3#
- 2.Qd6#
- 2.Qf5#
- 1...Be3
- 2.Sg6#
- 2.Qxe3#
- 2.Qd6#
- 2.Qf5#
- 1...Bc8
- 2.Sg6#
- 2.Bxd2#
- 2.Qd6#
- 1...Sd5
- 2.Qd6#
- 1...Se8
- 2.Sg6#
- 2.Bxd2#
- 2.Qf5#
- 1...f5
- 2.Sg6#
- 2.Bxd2#
- 2.Be5#
- 2.Qd6#
- 2.Qe5#
- 2.Qxf5#
- 1...Qe4!
- threat
- 1.Se3?
- Keys
- 1.Se1!
- threat
- 2.Sg2#
- 2.Rg4#
- 1...Rxe1
- 2.Qf2#
- 1...Bxe1
- 2.Qe3#
- 1...Bxc3
- 2.Qe3#
- 1...Qd4
- 2.Qxd4#
- 1...Qd1
- 2.Sg2#
- 2.Qd4#
- 1...Qe4
- 2.Rg4#
- 1...Rg1
- 2.Qf2#
- 1...Rf2
- 2.Rg4#
- 2.Qxf2#
- 1...Bb7
- 2.Rg4#
- 1...Bc8
- 2.Sg2#
- 2.Qxa4#
- 1...Sb6
- 2.Sg2#
- 2.Qxc7#
- 1...f5
- 2.Sg2#
- 2.Sg6#
- threat
- 1.Se1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 18
- Sets
- Q(c);N_GUARD,XS(A)::QAR2(H)
- Q(c);N_GUARD::QAR2(H)
- Q(c);N_GUARD,XP(F)::QAR2(H)
- Q(c);N_GUARD::QAR2(H),XQ(c)
- R(a);N_GUARD::QAR2(H)
- R(a);N_GUARD::QAR2(H),XR(a)
- R(a);SBLOCK::R1(E)
- B(b);N_GUARD::QAB1(H)
- B(b);N_GUARD,XB(C)::QAB1(H)
- B(b);N_GUARD::QAB1(H),XB(b)
- B(e);OGATE::QAR(H),XQ(c)
- S(h);N_GUARD::QAB(H),XS(g)
- P(f);SBLOCK::S(I)
- Tries
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- B(b);XB(C)::S(I)
- B(b);OGATE,XS(A)::QAB1(H),XB(b)
- R(a);::S(I)
- B(e);::S(I)
- Refutation
- Q(c);
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- Q(c);OGATE,XS(A)::QAR2(H),XQ(c)
- B(b);XB(C)::S(I)
- R(a);::S(A)
- Q(c);::S(I)
- R(a);::S(I)
- Refutation
- K(d);S_FLIGHT
- Try
- B(G);
- Threat
- R1(E)
- Vars
- R(a);N_GUARD,XB(G)::QAR2(H)
- B(b);N_GUARD,XB(C)::QAB1(H)
- Q(c);N_GUARD::QAR2(H),XQ(c)
- R(a);N_GUARD::QAR2(H)
- B(e);OGATE::QAR(H),XQ(c)
- P(f);SBLOCK::S(I)
- Refutation
- R(a);
- Try
- B(G);
- Threat
- R1(E)
- Vars
- B(b);N_GUARD,XB(C)::QAB1(H)
- Q(c);N_GUARD::QAR2(H),XQ(c)
- R(a);N_GUARD::QAR2(H)
- B(e);OGATE::QAR(H),XQ(c)
- P(f);SBLOCK::S(I)
- Refutation
- R(a);
- Try
- Q(H);
- Threat
- DUALS(4)
- Vars
- S(g);::QAB(H)
- Refutation
- Q(c);
- Try
- Actual
- S(A);
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD,XS(A)::QAR2(H)
- B(b);N_GUARD,XS(A)::QAB1(H)
- B(b);N_GUARD,XB(C)::QAB1(H)
- Q(c);N_GUARD::QAR2(H),XQ(c)
- Q(c);::R1(E)
- R(a);N_GUARD::QAR2(H)
- B(e);::R1(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).