MESON Chess Problem Database
Problem Display
PID: 258679 (8/2p1p3/2K1PpQ1/2p2q1R/2Pk1Np1/3Pp1P1/4p3/4B3 w - - 0 1)
Fothergill, Percival Guy Laugham (PGLF)
English Mechanic and World of Science, 1905
(First published on Fri Dec 8 1905)
#2
9 + 9
| 15239 | Valois Notebooks | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Ke5
- 2.Bc3#
- 1...Qxd3
- 2.Qxd3#
- 1...Qe4+
- 2.Qxe4#
- 1...Qxe6+
- 2.Sxe6#
- 1...Qxg6
- 2.Rd5#
- 1...Qxf4
- 2.Rd5#
- 1...Qd5+
- 2.Rxd5#
- 1...Qe5
- 2.Sxe2#
- 1...Qg5
- 2.Qe4#
- 1...Qxh5
- 2.Qe4#
- 1...Ke5
- Tries
- 1.Kd7?
- 1...Qxe6+
- 2.Sxe6#
- 1...Qd5+
- 2.Rxd5#
- 1...Ke5
- 2.Bc3#
- 1...Qxd3
- 2.Qxd3#
- 1...Qxg6
- 2.Rd5#
- 1...Qxf4
- 2.Rd5#
- 1...Qxh5
- 2.Qe4#
- 1...Qe4
- 2.Qxe4#
- 1...Qe5
- 2.Sxe2#
- 1...Qg5
- 2.Qe4#
- 1...c6!
- 1...Qxe6+
- 1.Sxe2+?
- 1...Ke5
- 2.Qxf5#
- 1...Kxd3!
- 1...Ke5
- 1.Rg5?
- 1...Qe4+
- 2.Qxe4#
- 1...Qxe6+
- 2.Sxe6#
- 1...Qd5+
- 2.Rxd5#
- 1...Ke5
- 2.Bc3#
- 1...Qxd3
- 2.Qxd3#
- 1...Qxg6
- 2.Rd5#
- 1...Qxf4
- 2.Rd5#
- 1...Qxg5
- 2.Qe4#
- 1...Qe5
- 2.Sxe2#
- 1...fxg5!
- 1...Qe4+
- 1.Qxf6+?
- 1...Qe5
- 2.Qxe5#
- 1...Qxf6
- 2.Rd5#
- 1...exf6!
- 1...Qe5
- 1.Kd7?
- Keys
- 1.Qh7!
- 1...Qe4+
- 2.Qxe4#
- 1...Qxe6+
- 2.Sxe6#
- 1...Qd5+
- 2.Rxd5#
- 1...Ke5
- 2.Bc3#
- 1...Qxd3
- 2.Qxd3#
- 1...Qxh7
- 2.Rd5#
- 1...Qxf4
- 2.Rd5#
- 1...Qxh5
- 2.Qe4#
- 1...Qg6
- 2.Rd5#
- 1...Qe5
- 2.Sxe2#
- 1...Qg5
- 2.Qe4#
- 1...Qe4+
- 1.Qh7!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(c);N_GUARD,P_SPINQ(f),S_FLIGHT::B(A)
- Q(f);OGATE,XP(B)::QAR1(I),XQ(f)
- Q(f);CHECK,OGATE::QAR1(I),XQ(f)
- Q(f);CHECK,XP(H)::S(E),XQ(f)
- Q(f);OGATE,XQ(I)::R1(F)
- Q(f);OGATE,XS(E)::R1(F)
- Q(f);CHECK,OGATE::R1(F),XQ(f)
- Q(f);::S(E),XP(a)
- Q(f);OGATE::QAR1(I)
- Q(f);OGATE,XR(F)::QAR1(I)
- Tries
- Try
- K(G);P_SPINP(H),S_FLIGHT
- Vars
- Q(f);CHECK,XP(H)::S(E),XQ(f)
- Q(f);CHECK,N_PINP(H),OGATE::R1(F),XQ(f)
- K(c);N_GUARD,P_SPINQ(f),S_FLIGHT::B(A)
- Q(f);N_PINP(H),OGATE,XP(B)::QAR1(I),XQ(f)
- Q(f);N_PINP(H),OGATE,XQ(I)::R1(F)
- Q(f);N_PINP(H),OGATE,XS(E)::R1(F)
- Q(f);N_PINP(H),OGATE,XR(F)::QAR1(I)
- Q(f);N_PINP(H),OGATE::QAR1(I),XQ(f)
- Q(f);N_PINP(H)::S(E),XP(a)
- Q(f);N_PINP(H),OGATE::QAR1(I)
- Refutation
- P(h);
- Try
- S(E);CHECK,XP(a)
- Vars
- K(c);P_SPINQ(f),S_FLIGHT::QAR1(I),XQ(f)
- Refutation
- K(c);P-FLIGHT,P_SPINQ(f),XP(B)
- Try
- R(F);
- Vars
- Q(f);CHECK,OGATE::QAR1(I),XQ(f)
- Q(f);CHECK,XP(H)::S(E),XQ(f)
- Q(f);CHECK,OGATE::R1(F),XQ(f)
- K(c);N_GUARD,P_SPINQ(f),S_FLIGHT::B(A)
- Q(f);OGATE,XP(B)::QAR1(I),XQ(f)
- Q(f);OGATE,XQ(I)::R1(F)
- Q(f);OGATE,XS(E)::R1(F)
- Q(f);OGATE,XR(F)::QAR1(I)
- Q(f);::S(E),XP(a)
- Refutation
- P(g);XR(F)
- Try
- Q(I);CHECK,XP(g)
- Vars
- Q(f);N_GUARD,P_SPINQ(f)::QAB1(I),XQ(f)
- Q(f);OGATE,P_PINP(H),XQ(I)::R1(F)
- Refutation
- P(i);XQ(I)
- Try
- Actual
- Q(I);
- Vars
- Q(f);CHECK,OGATE::QAR1(I),XQ(f)
- Q(f);CHECK,XP(H)::S(E),XQ(f)
- Q(f);CHECK,OGATE::R1(F),XQ(f)
- K(c);N_GUARD,P_SPINQ(f),S_FLIGHT::B(A)
- Q(f);OGATE,XP(B)::QAR1(I),XQ(f)
- Q(f);OGATE,XQ(I)::R1(F)
- Q(f);OGATE,XS(E)::R1(F)
- Q(f);OGATE,XR(F)::QAR1(I)
- Q(f);OGATE::R1(F)
- Q(f);::S(E),XP(a)
- Q(f);OGATE::QAR1(I)
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).