MESON Chess Problem Database
Problem Display
PID: 87519 (1K3R2/3B4/1p5p/bnBk2r1/1p6/1P1N1P2/7Q/8 w - - 0 1)
Fothergill, Percival Guy Laugham (PGLF)
The Problemist, 1930
#2
8 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Rf5#
- 2.Qe5#
- 1...Rg2
- 2.Rf5#
- 2.Qe5#
- 1...Rg3
- 2.Rf5#
- 1...Rg4
- 2.Rf5#
- 2.Qe5#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Rxf5#
- 1...Rh5
- 2.Qxh5#
- 1...Rg6
- 2.Rf5#
- 2.Qe5#
- 1...Rg7
- 2.Rf5#
- 2.Qe5#
- 1...Rg8
- 2.Qe5#
- 1...Sa3
- 2.Qd6#
- 1...Sc3
- 2.Qd6#
- 1...Sd4
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Sc7
- 2.Qd6#
- 1...Rg1
- Tries
- 1.Sf4+?
- 1...Ke5
- 2.Qe2#
- 1...Kxc5!
- 1...Ke5
- 1.Qg3?
- 1...Rxg3
- 2.Rf5#
- 1...Rh5
- 2.Qg8#
- 1...Rg4
- 2.Rf5#
- 2.Qe5#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Rxf5#
- 1...Rg6
- 2.Rf5#
- 2.Qe5#
- 1...Rg7
- 2.Rf5#
- 2.Qe5#
- 1...Rg8
- 2.Qe5#
- 2.Qxg8#
- 1...Sa3
- 2.Qd6#
- 1...Sc3
- 2.Qd6#
- 1...Sd4
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Sc7
- 2.Qd6#
- 1...h5
- 2.Qxg5#
- 1...bxc5!
- 1...Rxg3
- 1.Qf4?
- threat
- 2.Qc4#
- 2.Qe4#
- 2.Qf7#
- 1...Rg4
- 2.Rf5#
- 2.Qe5#
- 2.Qf5#
- 2.Qf7#
- 1...Re5
- 2.Qxe5#
- 2.Qc4#
- 1...Rf5
- 2.Rxf5#
- 2.Qc4#
- 2.Qe4#
- 2.Qxf5#
- 1...Rg6
- 2.Rf5#
- 2.Qe5#
- 2.Qc4#
- 2.Qe4#
- 2.Qf5#
- 1...Rg7
- 2.Rf5#
- 2.Qe5#
- 2.Qc4#
- 2.Qe4#
- 2.Qf5#
- 1...Sa3
- 2.Qd6#
- 2.Qd4#
- 2.Qe4#
- 2.Qf7#
- 1...Sc3
- 2.Qd6#
- 2.Qc4#
- 2.Qd4#
- 2.Qf7#
- 1...Sd4
- 2.Qd6#
- 2.Qxd4#
- 2.Qe4#
- 1...Sd6
- 2.Qxd6#
- 2.Qd4#
- 1...Sc7
- 2.Qd6#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...bxc5!
- threat
- 1.Qc7?
- threat
- 2.Sf4#
- 2.Qc6#
- 2.Qb7#
- 1...bxc5
- 2.Qxc5#
- 1...Rg4
- 2.Rf5#
- 2.Qe5#
- 2.Qc6#
- 2.Qb7#
- 1...Rf5
- 2.Rxf5#
- 2.Qc6#
- 2.Qb7#
- 1...Rg6
- 2.Sf4#
- 2.Rf5#
- 2.Qe5#
- 1...Sd4
- 2.Sf4#
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 2.Qc6#
- 1...Sa7
- 2.Sf4#
- 2.Qd6#
- 1...Sxc7!
- threat
- 1.Qe2?
- threat
- 2.Qe4#
- 2.Qe6#
- 1...Rg4
- 2.Rf5#
- 2.Qe5#
- 2.Qe6#
- 1...Re5
- 2.Qxe5#
- 1...Rg6
- 2.Rf5#
- 2.Qe4#
- 2.Qe5#
- 1...Sc3
- 2.Qe6#
- 1...Sd4
- 2.Qe4#
- 1...Sd6
- 2.Qe6#
- 1...Sc7
- 2.Qe4#
- 1...bxc5!
- threat
- 1.Qh4?
- threat
- 2.Qc4#
- 2.Qe4#
- 1...Rg4
- 2.Rf5#
- 1...Re5
- 2.Qc4#
- 1...Sa3
- 2.Qd4#
- 2.Qe4#
- 1...Sc3
- 2.Qc4#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 2.Qe4#
- 1...Sd6
- 2.Qd4#
- 1...bxc5!
- threat
- 1.Qxh6?
- threat
- 2.Bc6#
- 2.Qxg5#
- 2.Qc6#
- 2.Qe6#
- 1...Rh5
- 2.Bc6#
- 2.Qxh5#
- 2.Qc6#
- 2.Qe6#
- 1...Rg1
- 2.Bc6#
- 2.Rf5#
- 2.Qc6#
- 2.Qe6#
- 1...Rg2
- 2.Bc6#
- 2.Rf5#
- 2.Qc6#
- 2.Qe6#
- 1...Rg3
- 2.Bc6#
- 2.Rf5#
- 2.Qc6#
- 2.Qe6#
- 1...Rg4
- 2.Bc6#
- 2.Rf5#
- 2.Qc6#
- 2.Qe6#
- 1...Re5
- 2.Bc6#
- 2.Qc6#
- 1...Rf5
- 2.Bc6#
- 2.Rxf5#
- 2.Qc6#
- 2.Qe6#
- 1...Rg6
- 2.Rf5#
- 1...Rg7
- 2.Bc6#
- 2.Rf5#
- 2.Qc6#
- 2.Qe6#
- 1...Rg8
- 2.Bc6#
- 2.Qc6#
- 2.Qe6#
- 1...Sd4
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 2.Qe6#
- 1...Sa7
- 2.Qxg5#
- 2.Qd6#
- 2.Qe6#
- 1...Sc7
- 2.Bc6#
- 2.Qxg5#
- 2.Qc6#
- 2.Qd6#
- 1...bxc5!
- threat
- 1.Sf4+?
- Keys
- 1.Qg1!
- 1...Rxg1
- 2.Rf5#
- 1...bxc5
- 2.Qxc5#
- 1...Rh5
- 2.Qg8#
- 1...Rg2
- 2.Rf5#
- 1...Rg3
- 2.Rf5#
- 1...Rg4
- 2.Rf5#
- 1...Re5
- 2.Sf4#
- 1...Rf5
- 2.Rxf5#
- 1...Rg6
- 2.Rf5#
- 1...Rg7
- 2.Rf5#
- 1...Rg8
- 2.Qxg8#
- 1...Sa3
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...h5
- 2.Qxg5#
- 1...Rxg1
- 1.Qg1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 9
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD::R(H)
- R(e);N_GUARD::QAR1(A),XR(e)
- R(e);N_GUARD::R(H),XR(e)
- R(e);OGATEB::QAR(A),XR(e)
- R(e);N_GUARD,P_PINR(H)::QAR1(A)
- S(c);N_GUARD::QAR1(A)
- S(c);N_GUARD::QAR1(A),XS(c)
- Tries
- Try
- S(C);CHECK
- Vars
- K(d);P-FLIGHT::QAR(A)
- Refutation
- K(d);P-FLIGHT,XB(E)
- Try
- Q(A);
- Vars
- R(e);N_GUARD,XQ(A)::R(H)
- R(e);OGATE::QAB(A)
- R(e);N_GUARD::QAR1(A),XR(e)
- R(e);N_GUARD::R(H),XR(e)
- S(c);N_GUARD::QAR1(A)
- S(c);N_GUARD::QAR1(A),XS(c)
- P(g);N_GUARD::QAR(A),XR(e)
- Refutation
- P(f);XB(E)
- Try
- Q(A);
- Threat
- DUALS(3)
- Refutation
- P(f);XB(E)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- P(f);OGATE,XB(E)::QAR1(A),XP(f)
- Refutation
- S(c);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(e);N_GUARD::QAR1(A),XR(e)
- S(c);::QAB1(A)
- Refutation
- P(f);XB(E)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(e);N_GUARD::R(H)
- R(e);::QAB1(A)
- S(c);N_GUARD::QAR1(A)
- Refutation
- P(f);XB(E)
- Try
- Q(A);XP(g)
- Threat
- DUALS(4)
- Vars
- R(e);N_GUARD::R(H)
- S(c);N_GUARD::QAR1(A)
- Refutation
- P(f);XB(E)
- Try
- Actual
- Q(A);
- Vars
- R(e);N_GUARD,XQ(A)::R(H)
- P(f);OGATE,XB(E)::QAR1(A),XP(f)
- R(e);OGATE::QAB(A)
- R(e);N_GUARD::R(H)
- R(e);SBLOCK::S(C)
- R(e);N_GUARD::R(H),XR(e)
- R(e);OGATE,P_PINR(H)::QAB(A),XR(e)
- S(c);N_GUARD::QAR1(A)
- S(c);N_GUARD::QAR1(A),XS(c)
- P(g);N_GUARD::QAR(A),XR(e)
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).