MESON Chess Problem Database
Problem Display
PID: 21747 (8/8/1pNb4/1n1N4/8/1B1k1P1K/4p3/2B1Qn2 w - - 0 1)
Heydon, Joseph Kentigern
1st Prize, Australian Columns, 1921
#2
7 + 6
| 3360 | Simple Two-move Themes | 1924 |
| 5501 | Chess Cameos | 1936 |
SOLUTION
- SOUND
- Sets
- 1...Bh2
- 2.Sdb4#
- 1...Ba3
- 2.Sf4#
- 1...Bg3
- 2.Sdb4#
- 1...Bb4
- 2.Sdxb4#
- 2.Sf4#
- 1...Bf4
- 2.Sdb4#
- 2.Sxf4#
- 1...Bc5
- 2.Sf4#
- 1...Be5
- 2.Sdb4#
- 1...Bc7
- 2.Sdb4#
- 1...Be7
- 2.Sf4#
- 1...Bb8
- 2.Sdb4#
- 1...Bf8
- 2.Sf4#
- 1...Sd2
- 2.Qxd2#
- 1...Sh2
- 2.Qd2#
- 1...Se3
- 2.Qd2#
- 1...Sg3
- 2.Qd2#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sd4
- 2.Qc3#
- 1...Sa7
- 2.Qc3#
- 1...Sc7
- 2.Qc3#
- 1...Bh2
- Tries
- 1.Kg2?
- 1...Bh2
- 2.Sdb4#
- 1...Ba3
- 2.Sf4#
- 1...Bg3
- 2.Sdb4#
- 1...Bb4
- 2.Sdxb4#
- 2.Sf4#
- 1...Bf4
- 2.Sdb4#
- 2.Sxf4#
- 1...Bc5
- 2.Sf4#
- 1...Be5
- 2.Sdb4#
- 1...Bc7
- 2.Sdb4#
- 1...Be7
- 2.Sf4#
- 1...Bb8
- 2.Sdb4#
- 1...Bf8
- 2.Sf4#
- 1...Sd2
- 2.Qxd2#
- 1...Sh2
- 2.Qd2#
- 1...Sg3
- 2.Qd2#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sd4
- 2.Qc3#
- 1...Sa7
- 2.Qc3#
- 1...Sc7
- 2.Qc3#
- 1...Se3+!
- 1...Bh2
- 1.Se3?
- threat
- 2.Bc2#
- 2.Bc4#
- 1...Sxe3
- 2.Qd2#
- 1...Sd2
- 2.Qxd2#
- 1...Sd4
- 2.Bc4#
- 1...Sa3!
- threat
- 1.Be3?
- threat
- 2.Qb1#
- 1...Sd2
- 2.Qxd2#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sd4
- 2.Qc3#
- 1...Sxe3!
- threat
- 1.Qb4?
- threat
- 2.Qc4#
- 2.Qe4#
- 2.Qxb5#
- 1...e1Q
- 2.Qc4#
- 2.Qxb5#
- 1...e1R
- 2.Qc4#
- 2.Qxb5#
- 1...Sd2
- 2.Qxd2#
- 1...Se3
- 2.Qd2#
- 2.Qe4#
- 1...Sg3
- 2.Qd2#
- 2.Qc4#
- 2.Qxb5#
- 1...Sa3
- 2.Qc3#
- 2.Qd4#
- 2.Qe4#
- 1...Sc3
- 2.Qxc3#
- 2.Qc4#
- 2.Qd4#
- 1...Sd4
- 2.Qc3#
- 2.Qc4#
- 2.Qxd4#
- 1...Sa7
- 2.Qc3#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Sc7
- 2.Qc3#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Bxb4!
- threat
- 1.Qh4?
- threat
- 2.Qc4#
- 2.Qe4#
- 2.Qh7#
- 1...e1Q
- 2.Qc4#
- 1...e1S
- 2.Qc4#
- 2.Qe4#
- 1...e1B
- 2.Qc4#
- 2.Qe4#
- 1...e1R
- 2.Qc4#
- 1...Bf4
- 2.Qh7#
- 1...Se3
- 2.Qe4#
- 1...Sg3
- 2.Qc4#
- 1...Sa3
- 2.Qd4#
- 2.Qe4#
- 2.Qh7#
- 1...Sc3
- 2.Qc4#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 2.Qe4#
- 1...Sd2!
- threat
- 1.Qa5?
- threat
- 2.Qxb5#
- 1...Sd2
- 2.Qxd2#
- 1...Se3
- 2.Qd2#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sd4
- 2.Qc3#
- 1...Sa7
- 2.Qc3#
- 1...Sc7
- 2.Qc3#
- 1...bxa5!
- threat
- 1.Kg2?
- Keys
- 1.Qf2!
- 1...e1Q
- 2.Qc2#
- 1...e1S
- 2.Qxf1#
- 1...e1B
- 2.Qxf1#
- 2.Qc2#
- 1...e1R
- 2.Qc2#
- 1...Bh2
- 2.Scb4#
- 1...Ba3
- 2.Se5#
- 1...Bg3
- 2.Scb4#
- 1...Bb4
- 2.Scxb4#
- 2.Se5#
- 1...Bf4
- 2.Scb4#
- 1...Bc5
- 2.Se5#
- 1...Be5
- 2.Scb4#
- 2.Sxe5#
- 1...Bc7
- 2.Scb4#
- 1...Be7
- 2.Se5#
- 1...Bb8
- 2.Scb4#
- 1...Bf8
- 2.Se5#
- 1...Sd2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sg3
- 2.Qe3#
- 1...Sa3
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa7
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...e1Q
- 1.Qf2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 17
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- B(f);N_GUARD::S(F)
- S(a);N_GUARD::QAR1(B),XS(a)
- S(a);N_GUARD::QAR1(B)
- S(d);N_GUARD::QAR1(B)
- S(d);N_GUARD::QAR1(B),XS(d)
- Tries
- Try
- K(E);S_FLIGHT
- Vars
- B(f);N_GUARD::S(F)
- S(a);N_GUARD::QAR1(B),XS(a)
- S(a);N_GUARD::QAR1(B)
- S(d);N_GUARD::QAR1(B)
- S(d);N_GUARD::QAR1(B),XS(d)
- Refutation
- S(a);CHECK
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD,XS(F)::QAR1(B)
- S(a);N_GUARD::QAR1(B),XS(a)
- S(d);::B(C)
- Refutation
- S(d);
- Try
- B(A);
- Threat
- QAB(B)
- Vars
- S(a);N_GUARD::QAR1(B),XS(a)
- S(d);N_GUARD::QAR1(B)
- S(d);N_GUARD::QAR1(B),XS(d)
- Refutation
- S(a);XB(A)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- S(a);N_GUARD::QAR1(B),XS(a)
- Refutation
- B(f);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- P(b);::QAB1(B)
- B(f);::QAB(B)
- S(a);::QAB1(B)
- Refutation
- S(a);
- Try
- Q(B);
- Threat
- QAB(B),XS(d)
- Vars
- S(a);N_GUARD::QAR1(B),XS(a)
- S(a);N_GUARD::QAR1(B)
- S(d);N_GUARD::QAR1(B)
- S(d);N_GUARD::QAR1(B),XS(d)
- Refutation
- P(e);XQ(B)
- Try
- Actual
- Q(B);
- Vars
- P(b);OGATE::QAB1(B)
- P(b);OGATEB::QAB(B),XS(a)
- B(f);N_GUARD::S(G)
- S(a);N_GUARD::QAR1(B)
- S(a);N_GUARD::QAR1(B),XS(a)
- S(d);N_GUARD::QAR1(B)
- S(d);N_GUARD::QAR1(B),XS(d)
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).