MESON Chess Problem Database
Problem Display
PID: 57645 (8/1PPRpRPP/2p1k1p1/2PNrNP1/4r3/4Q3/3BBK2/8 w - - 0 1)
Loyd, Sam
American Chess Journal, 1878
#2
14 + 6
| 785 | Het Belgisch Schaakbord (L'Echiquier Belge) | 1954 |
| 4901 | Best Problems | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Kxd7
- 2.c8Q#
- 1...Kxf7
- 2.g8Q#
- 1...Rxd5
- 2.Rdxe7#
- 1...cxd5
- 2.Rdxe7#
- 1...gxf5
- 2.Rfxe7#
- 1...Kxd7
- Tries
- 1.Sf4+?
- 1...Kxd7
- 2.c8Q#
- 1...Kxf7
- 2.g8Q#
- 1...Rxf4+!
- 1...Kxd7
- 1.Sd4+?
- 1...Kxd7
- 2.c8Q#
- 1...Kxf7
- 2.g8Q#
- 1...Rxd4!
- 1...Kxd7
- 1.Rd6+?
- 1...Kxf7
- 2.g8Q#
- 1...exd6!
- 1...Kxf7
- 1.Rf6+?
- 1...Kxd7
- 2.c8Q#
- 1...exf6!
- 1...Kxd7
- 1.Qf3?
- threat
- 2.Rfxe7#
- 1...Kxd7
- 2.c8Q#
- 1...Kxf7
- 2.g8Q#
- 1...Rf4
- 2.Rdxe7#
- 1...Rxe2+!
- threat
- 1.Qxe4?
- threat
- 2.Rdxe7#
- 2.Rfxe7#
- 1...Kxd7
- 2.c8Q#
- 1...Kxf7
- 2.g8Q#
- 1...Rxe4!
- threat
- 1.Sf4+?
- Keys
- 1.Bf3!
- 1...Kxd7
- 2.c8Q#
- 1...Kxf7
- 2.g8Q#
- 1...Rxe3
- 2.Rdxe7#
- 1...Rxd5
- 2.Rdxe7#
- 1...Rxf5
- 2.Rfxe7#
- 1...cxd5
- 2.Rdxe7#
- 1...gxf5
- 2.Rfxe7#
- 1...Ra4
- 2.Rdxe7#
- 1...Rb4
- 2.Rdxe7#
- 1...Rc4
- 2.Rdxe7#
- 1...Rd4
- 2.Rdxe7#
- 1...Rf4
- 2.Rdxe7#
- 1...Rg4
- 2.Rdxe7#
- 1...Rh4
- 2.Rdxe7#
- 1...Kxd7
- 1.Bf3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- K(d);P_SPINP(f),S_FLIGHT,XR(K)::P=Q
- K(d);P_SPINP(f),S_FLIGHT,XR(L)::P=Q
- R(b);P_SPINR(a),SBLOCK,XS(F)::R1(K),XP(f)
- P(c);SBLOCK,XS(F)::R1(K),XP(f)
- P(e);SBLOCK,XS(G)::R1(L),XP(f)
- Tries
- Try
- S(F);CHECK
- Vars
- K(d);P_SPINP(f),S_FLIGHT,XR(K)::P=Q
- K(d);P_SPINP(f),S_FLIGHT,XR(L)::P=Q
- Refutation
- R(a);CHECK,P_SPINR(b),XS(F)
- Try
- S(G);CHECK
- Vars
- K(d);P_SPINP(f),S_FLIGHT,XR(K)::P=Q
- K(d);P_SPINP(f),S_FLIGHT,XR(L)::P=Q
- Refutation
- R(a);P_SPINR(b),XS(G)
- Try
- R(K);CHECK
- Vars
- K(d);S_FLIGHT,XR(L)::P=Q
- Refutation
- P(f);XR(K)
- Try
- R(L);CHECK
- Vars
- K(d);S_FLIGHT,XR(K)::P=Q
- Refutation
- P(f);XR(L)
- Try
- Q(D);
- Threat
- R1(L),XP(f)
- Vars
- K(d);P_SPINP(f),S_FLIGHT,XR(K)::P=Q
- K(d);P_SPINP(f),S_FLIGHT,XR(L)::P=Q
- R(a);P_PINQ(D)::R1(K),XP(f)
- Refutation
- R(a);CHECK,XB(B)
- Try
- Q(D);P_PINR(b),XR(a)
- Threat
- DUALS(2)
- Vars
- K(d);N_SPINR(b),P_SPINP(f),S_FLIGHT,XR(K)::P=Q
- K(d);N_SPINR(b),P_SPINP(f),S_FLIGHT,XR(L)::P=Q
- Refutation
- R(b);N_SPINR(b),XQ(D)
- Try
- Actual
- B(B);
- Vars
- K(d);P_SPINP(f),S_FLIGHT,XR(K)::P=Q
- K(d);P_SPINP(f),S_FLIGHT,XR(L)::P=Q
- R(a);XQ(D)::R1(K),XP(f)
- R(b);P_SPINR(a),SBLOCK,XS(F)::R1(K),XP(f)
- R(b);P_PINB(B),P_SPINR(a),SBLOCK,XS(G)::R1(L),XP(f)
- P(c);SBLOCK,XS(F)::R1(K),XP(f)
- P(e);SBLOCK,XS(G)::R1(L),XP(f)
- R(a);P_SPINR(b)::R1(K),XP(f)
- R(a);P_PINB(B),P_SPINR(b)::R1(K),XP(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).