MESON Chess Problem Database
Problem Display
PID: 173135 (1B6/3p2b1/Q2N4/1n5p/1r2p1kP/7R/5RP1/1b3nK1 w - - 0 1)
Shire, David J
1st Prize, Problem Observer, 1981
#2
8 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sa3
- 2.Qe2#
- 1...Sxd6
- 2.Qe2#
- 1...Sa7
- 2.Qe2#
- 1...Sc7
- 2.Qe2#
- 1...Sa3
- Tries
- 1.Sc4?
- threat
- 2.Rf4#
- 2.Qg6#
- 1...Bd4
- 2.Qg6#
- 1...Be5
- 2.Sxe5#
- 2.Qg6#
- 1...Bf6
- 2.Rf4#
- 1...Bh6
- 2.Se5#
- 1...Sc7
- 2.Qg6#
- 1...e3
- 2.Rf4#
- 1...d6
- 2.Qc8#
- 1...Sd6!
- threat
- 1.Sf5?
- threat
- 2.Rf4#
- 2.Qg6#
- 1...Bd4
- 2.Sh6#
- 2.Qg6#
- 1...Be5
- 2.Sh6#
- 2.Qg6#
- 1...Bf6
- 2.Sh6#
- 2.Rf4#
- 1...Bh6
- 2.Sxh6#
- 1...Sd6
- 2.Qe2#
- 1...Sc7
- 2.Qe2#
- 2.Qg6#
- 1...e3
- 2.Qg6#
- 1...d6!
- threat
- 1.Sf7?
- threat
- 2.Rf4#
- 2.Qg6#
- 1...Bd4
- 2.Sh6#
- 2.Qg6#
- 1...Be5
- 2.Sxe5#
- 2.Sh6#
- 2.Qg6#
- 1...Bf6
- 2.Sh6#
- 2.Rf4#
- 1...Bh6
- 2.Se5#
- 2.Sxh6#
- 1...Sd6
- 2.Qe2#
- 1...Sc7
- 2.Qe2#
- 2.Qg6#
- 1...d6
- 2.Qc8#
- 1...e3!
- threat
- 1.Se8?
- threat
- 2.Rf4#
- 2.Qg6#
- 1...Bd4
- 2.Qg6#
- 1...Be5
- 2.Qg6#
- 1...Bf6
- 2.Sxf6#
- 2.Rf4#
- 1...Bh6
- 2.Sf6#
- 1...Sd6
- 2.Qe2#
- 1...Sc7
- 2.Qe2#
- 2.Qg6#
- 1...d6
- 2.Qc8#
- 1...e3!
- threat
- 1.Qxb5?
- threat
- 2.Qe2#
- 2.Qxd7#
- 2.Qf5#
- 2.Qg5#
- 1...e3
- 2.Qe2#
- 2.Qg5#
- 1...Rb2
- 2.Qxd7#
- 2.Qf5#
- 2.Qg5#
- 1...Rb3
- 2.Qxd7#
- 2.Qf5#
- 2.Qg5#
- 1...Rc4
- 2.Qxd7#
- 2.Qf5#
- 2.Qg5#
- 1...Ba2
- 2.Qe2#
- 2.Qf5#
- 2.Qg5#
- 1...Bd3
- 2.Qxd7#
- 2.Qf5#
- 2.Qg5#
- 1...Be5
- 2.Qe2#
- 2.Qxd7#
- 1...Bf6
- 2.Qe2#
- 2.Qxd7#
- 2.Qf5#
- 1...Bh6
- 2.Qe2#
- 2.Qxd7#
- 2.Qf5#
- 1...Sd2
- 2.Qxd7#
- 2.Qf5#
- 2.Qg5#
- 1...Sh2
- 2.Qxd7#
- 2.Qf5#
- 2.Qg5#
- 1...Se3
- 2.Qe2#
- 2.Qg5#
- 1...Sg3
- 2.Qg5#
- 1...Rxb5!
- threat
- 1.Sc4?
- Keys
- 1.Sxe4!
- threat
- 2.Rf4#
- 2.Qg6#
- 1...Rxe4
- 2.Qg6#
- 1...Bxe4
- 2.Rf4#
- 1...Bd4
- 2.Qg6#
- 1...Be5
- 2.Qg6#
- 1...Bf6
- 2.Sxf6#
- 2.Rf4#
- 1...Bh6
- 2.Sf6#
- 1...Sd6
- 2.Qe2#
- 1...Sc7
- 2.Qe2#
- 2.Qg6#
- 1...d6
- 2.Qc8#
- threat
- 1.Sxe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- S(f);OGATE::QAB(F)
- S(f);OGATE,XS(G)::QAB(F)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(i);P_PINR(B)::QAR2(F)
- B(i);::R1(B)
- B(i);N_GUARD::S(G)
- S(f);::QAR2(F)
- P(d);::R1(B)
- P(h);OGATEB::QAB(F)
- Refutation
- S(f);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(i);N_GUARD::S(G),XB(i)
- S(f);OGATE::QAB(F)
- P(d);::QAR2(F)
- Refutation
- P(h);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- S(f);OGATE::QAB(F)
- P(h);OGATEB::QAB(F)
- Refutation
- P(d);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(i);P_PINR(B)::QAR2(F)
- B(i);::QAR2(F)
- B(i);N_GUARD::S(G)
- S(f);OGATE::QAB(F)
- P(h);OGATEB::QAB(F)
- Refutation
- P(d);
- Try
- Q(F);XS(f)
- Threat
- DUALS(4)
- Vars
- S(b);::QAR1(F)
- Refutation
- R(c);XQ(F)
- Try
- Actual
- S(G);XP(d)
- Threat
- DUALS(2)
- Vars
- R(c);XS(G)::QAR2(F)
- B(a);XS(G)::R1(B)
- B(i);P_PINR(B)::QAR2(F)
- B(i);::QAR2(F)
- B(i);N_GUARD::S(G)
- S(f);OGATE::QAB(F)
- P(h);OGATEB::QAB(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).