MESON Chess Problem Database
Problem Display
PID: 9494 (1B6/3pp3/1pN1N3/n2k2b1/6B1/3P1p2/n1Q4K/8 w - - 0 1)
Heathcote, Godfrey
Reading Observer, 1904
#2
7 + 8
| 3360 | Simple Two-move Themes | 1924 |
SOLUTION
- SOUND
- Sets
- 1...Bc1
- 2.Sxe7#
- 1...Bd2
- 2.Sxe7#
- 1...Be3
- 2.Sxe7#
- 1...Bf4+
- 2.Sxf4#
- 1...Bh4
- 2.Sf4#
- 1...Bf6
- 2.Sf4#
- 1...Bh6
- 2.Sxe7#
- 1...Sc1
- 2.Sb4#
- 1...Sc3
- 2.Sb4#
- 1...Sb4
- 2.Sxb4#
- 1...Sb3
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sxc6
- 2.Qb3#
- 2.Qxa2#
- 2.Qc4#
- 1...Sb7
- 2.Qc4#
- 1...b5
- 2.Qc5#
- 1...dxe6
- 2.Bxf3#
- 1...d6
- 2.Sc7#
- 1...Bc1
- Tries
- 1.Qa4?
- threat
- 2.Qb5#
- 2.Qe4#
- 1...dxc6
- 2.Qd4#
- 2.Qe4#
- 1...dxe6
- 2.Qb5#
- 1...b5
- 2.Qxb5#
- 2.Qe4#
- 1...Be3
- 2.Sxe7#
- 2.Qe4#
- 1...Sc3
- 2.Sb4#
- 1...Sb4
- 2.Sxb4#
- 2.Qb5#
- 1...Sb3
- 2.Qc4#
- 2.Qe4#
- 1...Sc4
- 2.Qb5#
- 2.Qxc4#
- 1...Sb7
- 2.Qc4#
- 2.Qe4#
- 1...Bf4+!
- threat
- 1.Qxa2+?
- 1...Sb3
- 2.Sb4#
- 1...Sc4
- 2.Sb4#
- 2.Qxc4#
- 1...Kxc6!
- 1...Sb3
- 1.Qc3?
- 1...Bf4+
- 2.Sxf4#
- 1...Sxc3
- 2.Sb4#
- 1...Sxc6
- 2.Qb3#
- 2.Qc4#
- 1...dxc6
- 2.Qd4#
- 2.Qe5#
- 1...dxe6
- 2.Bxf3#
- 1...Sc4
- 2.Qxc4#
- 1...Bc1
- 2.Sxe7#
- 1...Bd2
- 2.Sxe7#
- 1...Be3
- 2.Sxe7#
- 1...Bh4
- 2.Sf4#
- 1...Bf6
- 2.Sf4#
- 1...Bh6
- 2.Sxe7#
- 1...Sc1
- 2.Sb4#
- 1...Sb4
- 2.Sxb4#
- 1...Sb3
- 2.Qc4#
- 1...Sb7
- 2.Qc4#
- 1...b5
- 2.Qc5#
- 1...d6
- 2.Sc7#
- 1...f2!
- 1...Bf4+
- 1.Qa4?
- Keys
- 1.Qc1!
- 1...Bf4+
- 2.Sxf4#
- 1...Bxc1
- 2.Sxe7#
- 1...Sxc1
- 2.Sb4#
- 1...Sxc6
- 2.Qc4#
- 1...dxc6
- 2.Qxg5#
- 1...dxe6
- 2.Bxf3#
- 1...Sc3
- 2.Sb4#
- 1...Sc4
- 2.Qxc4#
- 1...f2
- 2.Qh1#
- 1...Bd2
- 2.Sxe7#
- 1...Be3
- 2.Sxe7#
- 1...Bh4
- 2.Sf4#
- 1...Bf6
- 2.Sf4#
- 1...Bh6
- 2.Sxe7#
- 1...Sb4
- 2.Sxb4#
- 1...Sb3
- 2.Qc4#
- 1...Sb7
- 2.Qc4#
- 1...b5
- 2.Qc5#
- 1...d6
- 2.Sc7#
- 1...Bf4+
- 1.Qc1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(e);N_GUARD::S(E),XP(h)
- B(e);CHECK,N_GUARD::S(F),XB(e)
- B(e);N_GUARD::S(F)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(c);N_GUARD::QAB1(A)
- S(c);N_GUARD::QAB1(A),XS(c)
- P(f);N_GUARD::QAR1(A)
- P(g);SBLOCK,XS(F)::B(D),XP(b)
- P(g);SBLOCK::S(F)
- Tries
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- P(g);XS(F)::QAR2(A)
- S(a);N_GUARD::S(E)
- Refutation
- B(e);CHECK
- Try
- Q(A);CHECK,XS(a)
- Vars
- S(c);P_SPINS(c)::S(E)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- Q(A);
- Vars
- B(e);CHECK,N_GUARD::S(F),XB(e)
- S(a);N_GUARD,XQ(A)::S(E)
- P(g);SBLOCK,XS(F)::B(D),XP(b)
- S(c);N_GUARD::QAB1(A),XS(c)
- B(e);N_GUARD::S(E),XP(h)
- B(e);N_GUARD::S(F)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(c);N_GUARD::QAB1(A)
- P(f);N_GUARD::QAR1(A)
- P(g);SBLOCK::S(F)
- Refutation
- P(b);
- Try
- Actual
- Q(A);
- Vars
- B(e);CHECK,N_GUARD::S(F),XB(e)
- B(e);N_GUARD,XQ(A)::S(E),XP(h)
- S(a);N_GUARD,XQ(A)::S(E)
- S(c);N_GUARD,XS(E)::QAB1(A)
- P(g);SBLOCK,XS(E)::QAR(A),XB(e)
- P(g);SBLOCK,XS(F)::B(D),XP(b)
- S(a);N_GUARD::S(E)
- S(c);N_GUARD::QAB1(A),XS(c)
- P(b);OGATEB::QAB(A)
- B(e);N_GUARD::S(E),XP(h)
- B(e);N_GUARD::S(F)
- S(a);N_GUARD::S(E),XS(a)
- S(c);N_GUARD::QAB1(A)
- P(f);N_GUARD::QAR1(A)
- P(g);SBLOCK::S(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).