MESON Chess Problem Database
Problem Display
PID: 203301 (8/8/8/3N1n1B/6p1/3P1k1n/4p2K/4Q2N w - - 0 1)
Powell, Alfred Peter
Morning Post, 1924
#2
6 + 5
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sg1
- 2.Qf2#
- 1...Sf2
- 2.Qxf2#
- 1...Sf4
- 2.Qf2#
- 1...Sg5
- 2.Qf2#
- 1...Se3
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sd4
- 2.Qg3#
- 1...Sh4
- 2.Qg3#
- 1...Sd6
- 2.Qg3#
- 1...Sh6
- 2.Qg3#
- 1...Se7
- 2.Qg3#
- 1...Sg7
- 2.Qg3#
- 1...Sg1
- Tries
- 1.Bg6?
- 1...Sg1
- 2.Qf2#
- 1...Sf2
- 2.Qxf2#
- 1...Sf4
- 2.Qf2#
- 1...Sg5
- 2.Qf2#
- 1...Se3
- 2.Be4#
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sd4
- 2.Be4#
- 2.Qg3#
- 1...Sh4
- 2.Be4#
- 2.Qg3#
- 1...Sd6
- 2.Qg3#
- 1...Sh6
- 2.Be4#
- 2.Qg3#
- 1...Se7
- 2.Be4#
- 2.Qg3#
- 1...Sg7
- 2.Be4#
- 2.Qg3#
- 1...g3+!
- 1...Sg1
- 1.Bf7?
- 1...Sg1
- 2.Qf2#
- 1...Sf2
- 2.Qxf2#
- 1...Sf4
- 2.Qf2#
- 1...Sg5
- 2.Qf2#
- 1...Se3
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sd4
- 2.Qg3#
- 1...Sh4
- 2.Qg3#
- 1...Sd6
- 2.Qg3#
- 1...Sh6
- 2.Qg3#
- 1...Se7
- 2.Qg3#
- 1...Sg7
- 2.Qg3#
- 1...g3+!
- 1...Sg1
- 1.Be8?
- 1...Sg1
- 2.Qf2#
- 1...Sf2
- 2.Qxf2#
- 1...Sf4
- 2.Qf2#
- 1...Sg5
- 2.Qf2#
- 1...Se3
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sd4
- 2.Qg3#
- 1...Sh4
- 2.Qg3#
- 1...Sd6
- 2.Qg3#
- 1...Sh6
- 2.Qg3#
- 1...Se7
- 2.Qg3#
- 1...Sg7
- 2.Qg3#
- 1...g3+!
- 1...Sg1
- 1.Qb4?
- threat
- 2.Bxg4#
- 2.Qe4#
- 2.Qxg4#
- 1...e1Q
- 2.Bxg4#
- 2.Qxg4#
- 1...e1R
- 2.Bxg4#
- 2.Qxg4#
- 1...Sf2
- 2.Qf4#
- 1...Sf4
- 2.Qe4#
- 2.Qxf4#
- 1...Sg5
- 2.Bxg4#
- 2.Qf4#
- 2.Qxg4#
- 1...Se3
- 2.Qe4#
- 1...Sg3
- 2.Bxg4#
- 2.Qxg4#
- 1...Sd6
- 2.Bxg4#
- 2.Qxg4#
- 1...Sh6
- 2.Qe4#
- 1...Sd4!
- threat
- 1.Qh4?
- threat
- 2.Bxg4#
- 2.Qxg4#
- 1...Sf2
- 2.Qxf2#
- 1...Se3
- 2.Qg3#
- 2.Qxh3#
- 1...Sh6
- 2.Qg3#
- 2.Qxh3#
- 1...Sxh4!
- threat
- 1.Qg1?
- threat
- 2.Bxg4#
- 2.Qg2#
- 2.Qxg4#
- 1...e1S
- 2.Bxg4#
- 2.Qxg4#
- 1...Sf2
- 2.Qxf2#
- 2.Qg2#
- 1...Sf4
- 2.Bxg4#
- 2.Qf2#
- 2.Qxg4#
- 1...Se3
- 2.Qxe3#
- 2.Qg3#
- 1...Sg3
- 2.Qe3#
- 2.Qg2#
- 2.Qxg3#
- 1...Sh4
- 2.Bxg4#
- 2.Qe3#
- 2.Qg3#
- 2.Qxg4#
- 1...Sh6
- 2.Qe3#
- 2.Qg2#
- 2.Qg3#
- 1...Sxg1!
- threat
- 1.Bg6?
- Keys
- 1.Qd2!
- 1...e1Q
- 2.Qg2#
- 1...e1S
- 2.Qd1#
- 1...e1B
- 2.Qd1#
- 2.Qg2#
- 1...e1R
- 2.Qg2#
- 1...Sg1
- 2.Qf4#
- 1...Sf2
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sg5
- 2.Qf4#
- 1...Se3
- 2.Qxe3#
- 1...Sg3
- 2.Qe3#
- 1...Sd4
- 2.Qe3#
- 1...Sh4
- 2.Qe3#
- 1...Sd6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se7
- 2.Qe3#
- 1...Sg7
- 2.Qe3#
- 1...e1Q
- 1.Qd2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 12
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(c);N_GUARD::QAR1(A)
- S(c);N_GUARD::QAR1(A),XS(c)
- S(e);N_GUARD::QAR1(A)
- S(e);N_GUARD::QAR1(A),XS(e)
- Tries
- Try
- B(F);N_PINP(d)
- Vars
- S(c);N_GUARD::QAR1(A)
- S(c);N_GUARD::QAR1(A),XS(c)
- S(e);N_GUARD::QAR1(A),XS(e)
- S(e);N_GUARD::QAR1(A)
- Refutation
- P(d);CHECK
- Try
- B(F);N_PINP(d)
- Vars
- S(c);N_GUARD::QAR1(A)
- S(c);N_GUARD::QAR1(A),XS(c)
- S(e);N_GUARD::QAR1(A)
- S(e);N_GUARD::QAR1(A),XS(e)
- Refutation
- P(d);CHECK
- Try
- B(F);N_PINP(d)
- Vars
- S(c);N_GUARD::QAR1(A)
- S(c);N_GUARD::QAR1(A),XS(c)
- S(e);N_GUARD::QAR1(A)
- S(e);N_GUARD::QAR1(A),XS(e)
- Refutation
- P(d);CHECK
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- S(c);N_GUARD::QAR1(A)
- S(e);::QAB1(A)
- Refutation
- S(e);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(c);N_GUARD::QAR1(A),XS(c)
- Refutation
- S(e);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(3)
- Refutation
- S(c);XQ(A)
- Try
- Actual
- Q(A);
- Vars
- P(a);OGATE::QAB1(A)
- P(a);OGATEB::QAB(A)
- S(c);N_GUARD::QAR1(A)
- S(c);N_GUARD::QAR1(A),XS(c)
- S(e);N_GUARD::QAR1(A),XS(e)
- S(e);N_GUARD::QAR1(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).