MESON Chess Problem Database
Problem Display
PID: 218147 (8/1K2PQ2/p1B1n3/k3B3/8/Pb6/1PR1r3/1n6 w - - 0 1)
Townsend, Alonzo
English Mechanic and World of Science, 1873
(First published on Fri Oct 24 1873)
#2
8 + 6
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ba2
- 2.b4#
- 1...Bxc2
- 2.b4#
- 1...Ba4
- 2.b4#
- 1...Bc4
- 2.b4#
- 1...Bd5
- 2.b4#
- 1...Sd2
- 2.Bc3#
- 1...Sxa3
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sd4
- 2.Bc7#
- 1...Sf4
- 2.Bc7#
- 2.Rc5#
- 1...Sc5+
- 2.Rxc5#
- 1...Sg5
- 2.Bc7#
- 2.Rc5#
- 1...Sc7
- 2.Bxc7#
- 1...Sg7
- 2.Bc7#
- 2.Rc5#
- 1...Sd8+
- 2.exd8Q#
- 2.exd8B#
- 1...Sf8
- 2.Bc7#
- 2.Rc5#
- 1...Ba2
- Tries
- 1.Bd4?
- threat
- 2.Bb6#
- 1...Sc5+
- 2.Rxc5#
- 1...Sd8+
- 2.exd8Q#
- 2.exd8B#
- 1...Sxa3
- 2.Bc3#
- 1...Sxd4!
- threat
- 1.Rxe2?
- 1...Sd8+
- 2.exd8Q#
- 2.exd8B#
- 1...Sxa3
- 2.Bc3#
- 1...Bd1
- 2.b4#
- 1...Ba2
- 2.b4#
- 1...Bc2
- 2.b4#
- 1...Ba4
- 2.b4#
- 1...Bc4
- 2.b4#
- 1...Bd5
- 2.b4#
- 1...Sd2
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sd4
- 2.Bc7#
- 1...Sf4
- 2.Bc7#
- 1...Sg5
- 2.Bc7#
- 1...Sc7
- 2.Bxc7#
- 1...Sg7
- 2.Bc7#
- 1...Sf8
- 2.Bc7#
- 1...Sc5+!
- 1...Sd8+
- 1.Qh5?
- threat
- 2.Bc3#
- 2.Bc7#
- 1...Sc5+
- 2.Rxc5#
- 1...Sd8+
- 2.exd8Q#
- 2.exd8B#
- 1...Sxa3
- 2.Bc3#
- 1...Bd5
- 2.b4#
- 1...Sc3
- 2.Bxc3#
- 2.Bc7#
- 1...Sd4
- 2.Bc7#
- 1...Sg5
- 2.Bc7#
- 2.Rc5#
- 1...Sc7
- 2.Bc3#
- 2.Bxc7#
- 1...Rxe5!
- threat
- 1.Qxe6?
- threat
- 2.Bc7#
- 2.Rc5#
- 1...Rxc2
- 2.Bc7#
- 1...Bxc2
- 2.Bc7#
- 2.Qd5#
- 2.b4#
- 1...Sxa3
- 2.Bc3#
- 1...Ba4
- 2.Bc7#
- 2.b4#
- 1...Bc4
- 2.Bc7#
- 2.b4#
- 1...Sc3
- 2.Bxc3#
- 2.Bc7#
- 1...Rxe5!
- threat
- 1.Qf4?
- threat
- 2.Qb4#
- 1...Sc5+
- 2.Rxc5#
- 1...Sd8+
- 2.exd8Q#
- 2.exd8B#
- 1...Sxa3
- 2.Bc3#
- 1...Sxf4
- 2.Bc7#
- 2.Rc5#
- 1...Bc4
- 2.b4#
- 1...Sd4
- 2.Bc7#
- 1...Re4!
- threat
- 1.Qf5?
- threat
- 2.Bc3#
- 2.Bc7#
- 1...Sc5+
- 2.Rxc5#
- 1...Sd8+
- 2.exd8Q#
- 2.exd8B#
- 1...Sxa3
- 2.Bc3#
- 1...Bd5
- 2.b4#
- 1...Sc3
- 2.Bxc3#
- 2.Bc7#
- 1...Sd4
- 2.Bc7#
- 1...Sc7
- 2.Bc3#
- 2.Bxc7#
- 1...Rxe5!
- threat
- 1.Bd4?
- Keys
- 1.Qf1!
- 1...Sc5+
- 2.Rxc5#
- 1...Sd8+
- 2.exd8Q#
- 2.exd8B#
- 1...Rxc2
- 2.Qxa6#
- 1...Rxe5
- 2.Qxa6#
- 1...Bxc2
- 2.b4#
- 1...Sxa3
- 2.Bc3#
- 1...Re1
- 2.Qxa6#
- 1...Rd2
- 2.Qxa6#
- 1...Rf2
- 2.Qxa6#
- 1...Rg2
- 2.Qxa6#
- 1...Rh2
- 2.Qxa6#
- 1...Re3
- 2.Qxa6#
- 1...Re4
- 2.Qxa6#
- 1...Ba2
- 2.b4#
- 1...Ba4
- 2.b4#
- 1...Bc4
- 2.b4#
- 1...Bd5
- 2.b4#
- 1...Sd2
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sd4
- 2.Bc7#
- 1...Sf4
- 2.Bc7#
- 2.Rc5#
- 1...Sg5
- 2.Bc7#
- 2.Rc5#
- 1...Sc7
- 2.Bxc7#
- 1...Sg7
- 2.Bc7#
- 2.Rc5#
- 1...Sf8
- 2.Bc7#
- 2.Rc5#
- 1...Sc5+
- 1.Qf1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- B(c);OGATE::P(A)
- B(c);OGATE,XR(B)::P(A)
- B(c);OGATE,P_PINB(E)::P(A)
- S(a);N_GUARD::B(D)
- S(a);N_GUARD,XP(C)::B(D)
- S(a);N_GUARD::B(D),XS(a)
- S(f);N_GUARD::B(D)
- S(f);CHECK,N_GUARD::R(B),XS(f)
- S(f);N_GUARD::B(D),XS(f)
- S(f);CHECK,OGATE::PXS(f)=Q
- Tries
- Try
- B(D);
- Threat
- B(D)
- Vars
- S(f);CHECK,N_GUARD::R(B),XS(f)
- S(f);CHECK,OGATE::PXS(f)=Q
- S(a);N_GUARD,XP(C)::B(D)
- Refutation
- S(f);XB(D)
- Try
- R(B);XR(b)
- Vars
- S(f);CHECK,OGATE::PXS(f)=Q
- S(a);N_GUARD,XP(C)::B(D)
- B(c);OGATE::P(A)
- B(c);OGATE,P_PINB(E)::P(A)
- S(a);N_GUARD::B(D)
- S(a);N_GUARD::B(D),XS(a)
- S(f);N_GUARD::B(D)
- S(f);N_GUARD::B(D),XS(f)
- Refutation
- S(f);CHECK
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- S(f);CHECK,N_GUARD::R(B),XS(f)
- S(f);CHECK,OGATE::PXS(f)=Q
- S(a);XP(C)::QAR(H)+B(D),DCHECK
- B(c);OGATE,P_PINB(E)::P(A)
- S(f);::QAR(H)+B(D),DCHECK
- Refutation
- R(b);P_SPINR(b),XB(D)
- Try
- Q(H);XS(f)
- Threat
- DUALS(2)
- Vars
- R(b);XR(B)::B(D)
- S(a);N_GUARD,XP(C)::B(D)
- Refutation
- R(b);XB(D)
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- S(f);CHECK,N_GUARD::R(B),XS(f)
- S(f);CHECK,OGATE::PXS(f)=Q
- S(a);N_GUARD,XP(C)::B(D)
- B(c);OGATE::P(A)
- S(f);N_GUARD::B(D)
- Refutation
- R(b);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- S(f);CHECK,N_GUARD::R(B),XS(f)
- S(f);CHECK,OGATE::PXS(f)=Q
- S(a);XP(C)::QAR(H)+B(D),DCHECK
- B(c);OGATE,P_PINB(E)::P(A)
- S(f);::QAR(H)+B(D),DCHECK
- Refutation
- R(b);P_SPINR(b),XB(D)
- Try
- Actual
- Q(H);
- Vars
- S(f);CHECK,N_GUARD::R(B),XS(f)
- S(f);CHECK,OGATE::PXS(f)=Q
- R(b);OGATE,XR(B)::QAR1(H),XP(e)
- R(b);OGATE,XB(D)::QAR1(H),XP(e)
- B(c);OGATE,XR(B)::P(A)
- S(a);N_GUARD,XP(C)::B(D)
- R(b);OGATE::QAR1(H),XP(e)
- B(c);OGATE::P(A)
- B(c);OGATE,P_PINB(E)::P(A)
- S(a);N_GUARD::B(D)
- S(a);N_GUARD::B(D),XS(a)
- S(f);N_GUARD::B(D)
- S(f);N_GUARD::B(D),XS(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).