MESON Chess Problem Database
Problem Display
PID: 145670 (5RB1/1p4R1/1pqP4/1Pn1k3/2Q4p/5p1p/4nB1K/8 w - - 0 1)
Speakman, Thomas
British Chess Magazine, 1900
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Qxb5
- 2.Qd5#
- 1...Qd5
- 2.Qxd5#
- 1...Qd7
- 2.Qd5#
- 1...Qe8
- 2.Qd5#
- 1...Qxd6
- 2.Rg5#
- 1...Qc7
- 2.Qd5#
- 1...Qc8
- 2.Qd5#
- 1...Sc1
- 2.Qd4#
- 2.Qf4#
- 1...Sg1
- 2.Qd4#
- 2.Qf4#
- 1...Sc3
- 2.Qd4#
- 2.Qf4#
- 1...Sg3
- 2.Qd4#
- 2.Qf4#
- 1...Sd4
- 2.Qxd4#
- 1...Sf4
- 2.Qd4#
- 2.Qxf4#
- 1...Sb3
- 2.Qe6#
- 1...Sd3
- 2.Qe6#
- 1...Sa4
- 2.Qe6#
- 1...Se4
- 2.Qe6#
- 1...Sa6
- 2.Qe6#
- 1...Se6
- 2.Qxe6#
- 1...Sd7
- 2.Qe6#
- 1...Qxb5
- Tries
- 1.Bg3+?
- 1...Sxg3
- 2.Qf4#
- 1...Sf4
- 2.Bxf4#
- 2.Qxf4#
- 1...hxg3+!
- 1...Sxg3
- 1.Rg6?
- 1...Qxb5
- 2.Qd5#
- 1...Qxd6
- 2.Rg5#
- 1...Sd4
- 2.Qxd4#
- 1...Se6
- 2.Rxe6#
- 2.Qxe6#
- 1...Qd5
- 2.Qxd5#
- 1...Qd7
- 2.Qd5#
- 1...Qe8
- 2.Qd5#
- 1...Qc7
- 2.Qd5#
- 1...Qc8
- 2.Qd5#
- 1...Sc1
- 2.Qd4#
- 2.Qf4#
- 1...Sg1
- 2.Qd4#
- 2.Qf4#
- 1...Sc3
- 2.Qd4#
- 2.Qf4#
- 1...Sg3
- 2.Qd4#
- 2.Qf4#
- 1...Sf4
- 2.Qd4#
- 2.Qxf4#
- 1...Sb3
- 2.Re6#
- 2.Qe6#
- 1...Sd3
- 2.Re6#
- 2.Qe6#
- 1...Sa4
- 2.Re6#
- 2.Qe6#
- 1...Se4
- 2.Re6#
- 2.Qe6#
- 1...Sa6
- 2.Re6#
- 2.Qe6#
- 1...Sd7
- 2.Re6#
- 2.Qe6#
- 1...Qe4!
- 1...Qxb5
- 1.Re7+?
- 1...Se6
- 2.Rxe6#
- 2.Qxe6#
- 1...Kxd6!
- 1...Se6
- 1.bxc6?
- threat
- 2.Qd5#
- 1...Kxd6
- 2.Qd5#
- 1...Sc3
- 2.Qd4#
- 2.Qf4#
- 1...Sf4
- 2.Qd4#
- 2.Qxf4#
- 1...Se6
- 2.Qxe6#
- 1...bxc6!
- threat
- 1.Bg3+?
- Keys
- 1.Qf7!
- 1...Ke4
- 2.Qf5#
- 1...Kxd6
- 2.Qe7#
- 1...Qxb5
- 2.Qd5#
- 1...Qxd6
- 2.Qf5#
- 1...Se6
- 2.Qxe6#
- 1...Qe4
- 2.Qf6#
- 1...Qd5
- 2.Qxd5#
- 1...Qd7
- 2.Qd5#
- 1...Qe8
- 2.Qd5#
- 1...Qc7
- 2.Qd5#
- 1...Qc8
- 2.Qd5#
- 1...Sc1
- 2.Qf4#
- 1...Sg1
- 2.Qf4#
- 1...Sc3
- 2.Qf4#
- 1...Sg3
- 2.Qf4#
- 1...Sd4
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sb3
- 2.Qe6#
- 2.Qe7#
- 1...Sd3
- 2.Qe6#
- 2.Qe7#
- 1...Sa4
- 2.Qe6#
- 2.Qe7#
- 1...Se4
- 2.Qe6#
- 2.Qe7#
- 1...Sa6
- 2.Qe6#
- 2.Qe7#
- 1...Sd7
- 2.Qe6#
- 2.Qe7#
- 1...Ke4
- 1.Qf7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 8
- REMOVED MATES = 6
- Sets
- Q(h);N_GUARD,XP(D)::QAR1(C)
- Q(h);N_GUARD::QAR1(C),XQ(h)
- Q(h);N_GUARD::QAR1(C)
- Q(h);SBLOCK,XP(E)::R(F)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(e);N_GUARD::QAR1(C)
- S(e);N_GUARD,SBLOCK::QAR1(C)
- S(e);N_GUARD::QAR1(C),XS(e)
- Tries
- Try
- B(A);CHECK
- Vars
- S(a);N_GUARD,XB(A)::QAB1(C)
- Refutation
- P(d);CHECK,XB(A)
- Try
- R(F);
- Vars
- Q(h);N_GUARD,XP(D)::QAR1(C)
- Q(h);SBLOCK,XP(E)::R(F)
- S(a);N_GUARD::QAB1(C),XS(a)
- Q(h);N_GUARD::QAR1(C),XQ(h)
- Q(h);N_GUARD::QAR1(C)
- Refutation
- Q(h);
- Try
- R(F);CHECK
- Refutation
- K(f);S_FLIGHT,XP(E)
- Try
- P(D);XQ(h)
- Threat
- QAR1(C)
- Vars
- K(f);S_FLIGHT,XP(E)::QAR1(C)
- S(e);N_GUARD::QAR1(C),XS(e)
- Refutation
- P(i);XP(D)
- Try
- Actual
- Q(C);
- Vars
- K(f);P-FLIGHT::QAB1(C)
- K(f);S_FLIGHT,XP(E)::QAB1(C)
- Q(h);N_GUARD,XP(D)::QAR1(C)
- Q(h);SBLOCK,XP(E)::QAR1(C)
- S(e);N_GUARD::QAR1(C),XS(e)
- Q(h);SBLOCK::QAB1(C)
- Q(h);N_GUARD::QAR1(C),XQ(h)
- Q(h);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
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).