MESON Chess Problem Database
Problem Display
PID: 152096 (1K5N/2P1kPPn/2pqPp1r/QpPp1B2/1r1N4/B7/8/4R3 w - - 0 1)
Easter, Norris
2nd Prize, Bristol Times and Mirror, 1930
#2
12 + 9
| 35 | L'Italia Scacchistica | 1930 |
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Sxc6#
- 1...Qg3
- 2.Sxc6#
- 1...Qf4
- 2.Sxc6#
- 1...Qxc5
- 2.c8S#
- 1...Qe5
- 2.Sxc6#
- 1...Qxc7+
- 2.Qxc7#
- 1...Qd7
- 2.exd7#
- 1...Qd8+
- 2.cxd8Q#
- 2.cxd8B#
- 1...Rb1
- 2.cxd6#
- 1...Rb2
- 2.cxd6#
- 1...Rb3
- 2.cxd6#
- 1...Ra4
- 2.cxd6#
- 1...Rc4
- 2.cxd6#
- 1...Rxd4
- 2.cxd6#
- 1...Rh1
- 2.Sg6#
- 1...Rh2
- 2.Sg6#
- 1...Rh3
- 2.Sg6#
- 1...Rh4
- 2.Sg6#
- 1...Rh5
- 2.Sg6#
- 1...Rg6
- 2.Sxg6#
- 1...Sg5
- 2.f8Q#
- 1...Sf8
- 2.g8S#
- 1...Qh2
- Tries
- 1.Kb7?
- threat
- 2.c8S#
- 1...Qxc7+
- 2.Qxc7#
- 1...Qd7
- 2.exd7#
- 1...Qd8
- 2.Sxc6#
- 2.cxd8Q#
- 2.cxd8B#
- 1...Qxe6!
- threat
- 1.Ka8?
- threat
- 2.c8S#
- 1...Qd8+
- 2.cxd8Q#
- 2.cxd8B#
- 1...Qxc7
- 2.Qxc7#
- 1...Qd7
- 2.exd7#
- 1...Qxe6!
- threat
- 1.Kc8?
- 1...Qxc7+
- 2.Qxc7#
- 1...Qxe6+
- 2.Rxe6#
- 1...Qd7+
- 2.exd7#
- 1...Qd8+
- 2.cxd8Q#
- 2.cxd8B#
- 1...Rxd4
- 2.cxd6#
- 1...Qh2
- 2.Sxc6#
- 1...Qg3
- 2.Sxc6#
- 1...Qf4
- 2.Sxc6#
- 1...Qe5
- 2.Sxc6#
- 1...Rb1
- 2.cxd6#
- 1...Rb2
- 2.cxd6#
- 1...Rb3
- 2.cxd6#
- 1...Ra4
- 2.cxd6#
- 1...Rc4
- 2.cxd6#
- 1...Rh1
- 2.Sg6#
- 1...Rh2
- 2.Sg6#
- 1...Rh3
- 2.Sg6#
- 1...Rh4
- 2.Sg6#
- 1...Rh5
- 2.Sg6#
- 1...Rg6
- 2.Sxg6#
- 1...Sg5
- 2.f8Q#
- 1...Sf8
- 2.g8S#
- 1...Qxc5!
- 1...Qxc7+
- 1.Bxb4?
- threat
- 2.cxd6#
- 1...Qxc7+
- 2.Qxc7#
- 1...Qd8+
- 2.cxd8Q#
- 2.cxd8B#
- 1...Qxc5
- 2.Bxc5#
- 2.c8S#
- 1...Qh2
- 2.Sxc6#
- 1...Qg3
- 2.Sxc6#
- 1...Qf4
- 2.Sxc6#
- 1...Qe5
- 2.Sxc6#
- 1...Qd7
- 2.exd7#
- 1...Qxe6!
- threat
- 1.Bxh7?
- threat
- 2.Sf5#
- 2.f8Q#
- 1...Qxc7+
- 2.Qxc7#
- 1...Qd8+
- 2.cxd8Q#
- 2.cxd8B#
- 1...Rxd4
- 2.cxd6#
- 2.f8Q#
- 1...f5
- 2.f8Q#
- 1...Qf4
- 2.Sxc6#
- 2.f8Q#
- 1...Qe5
- 2.f8Q#
- 1...Rh5
- 2.Sg6#
- 2.f8Q#
- 1...Qxe6!
- threat
- 1.Re2?
- 1...Qxc7+
- 2.Qxc7#
- 1...Qd8+
- 2.cxd8Q#
- 2.cxd8B#
- 1...Qxc5
- 2.c8S#
- 1...Rxd4
- 2.cxd6#
- 1...Qd7
- 2.exd7#
- 1...Qh2
- 2.Sxc6#
- 1...Qg3
- 2.Sxc6#
- 1...Qf4
- 2.Sxc6#
- 1...Qe5
- 2.Sxc6#
- 1...Rb1
- 2.cxd6#
- 1...Rb2
- 2.cxd6#
- 1...Rb3
- 2.cxd6#
- 1...Ra4
- 2.cxd6#
- 1...Rc4
- 2.cxd6#
- 1...Rh1
- 2.Sg6#
- 1...Rh2
- 2.Sg6#
- 1...Rh3
- 2.Sg6#
- 1...Rh4
- 2.Sg6#
- 1...Rh5
- 2.Sg6#
- 1...Rg6
- 2.Sxg6#
- 1...Sg5
- 2.f8Q#
- 1...Sf8
- 2.g8S#
- 1...Qxe6!
- 1...Qxc7+
- 1.Re3?
- 1...Qxc7+
- 2.Qxc7#
- 1...Qd8+
- 2.cxd8Q#
- 2.cxd8B#
- 1...Qxc5
- 2.c8S#
- 1...Rxd4
- 2.cxd6#
- 1...Qd7
- 2.exd7#
- 1...Qh2
- 2.Sxc6#
- 1...Qg3
- 2.Sxc6#
- 1...Qf4
- 2.Sxc6#
- 1...Qe5
- 2.Sxc6#
- 1...Rb1
- 2.cxd6#
- 1...Rb2
- 2.cxd6#
- 1...Rb3
- 2.cxd6#
- 1...Ra4
- 2.cxd6#
- 1...Rc4
- 2.cxd6#
- 1...Rh1
- 2.Sg6#
- 1...Rh2
- 2.Sg6#
- 1...Rh3
- 2.Sg6#
- 1...Rh4
- 2.Sg6#
- 1...Rh5
- 2.Sg6#
- 1...Rg6
- 2.Sxg6#
- 1...Sg5
- 2.f8Q#
- 1...Sf8
- 2.g8S#
- 1...Qxe6!
- 1...Qxc7+
- 1.Qb6?
- 1...Qxc7+
- 2.Qxc7#
- 1...Qd8+
- 2.cxd8Q#
- 2.cxd8B#
- 1...Qxc5
- 2.Qxc5#
- 2.c8S#
- 1...Rxd4
- 2.cxd6#
- 1...Qd7
- 2.exd7#
- 1...Qh2
- 2.Sxc6#
- 1...Qg3
- 2.Sxc6#
- 1...Qf4
- 2.Sxc6#
- 1...Qe5
- 2.Sxc6#
- 1...Rb1
- 2.cxd6#
- 1...Rb2
- 2.cxd6#
- 1...Rb3
- 2.cxd6#
- 1...Ra4
- 2.cxd6#
- 1...Rc4
- 2.cxd6#
- 1...Rh1
- 2.Sg6#
- 1...Rh2
- 2.Sg6#
- 1...Rh3
- 2.Sg6#
- 1...Rh4
- 2.Sg6#
- 1...Rh5
- 2.Sg6#
- 1...Rg6
- 2.Sxg6#
- 1...Sg5
- 2.f8Q#
- 1...Sf8
- 2.g8S#
- 1...Qxe6!
- 1...Qxc7+
- 1.g8Q?
- threat
- 2.Qe8#
- 1...Qxc7+
- 2.Qxc7#
- 1...Qd8+
- 2.Qxd8#
- 2.cxd8Q#
- 2.cxd8B#
- 1...Qxc5
- 2.Qd8#
- 2.c8S#
- 1...Qd7
- 2.exd7#
- 1...Sf8!
- threat
- 1.Kb7?
- Keys
- 1.Qa7!
- 1...Qxc7+
- 2.Qxc7#
- 1...Qd8+
- 2.c8S#
- 1...Qxc5
- 2.Qxc5#
- 1...Qxe6
- 2.c8Q#
- 2.c8R#
- 1...Rxd4
- 2.cxd6#
- 1...Qd7
- 2.exd7#
- 1...Qh2
- 2.Sxc6#
- 1...Qg3
- 2.Sxc6#
- 1...Qf4
- 2.Sxc6#
- 1...Qe5
- 2.Sxc6#
- 1...Rb1
- 2.cxd6#
- 1...Rb2
- 2.cxd6#
- 1...Rb3
- 2.cxd6#
- 1...Ra4
- 2.cxd6#
- 1...Rc4
- 2.cxd6#
- 1...Rh1
- 2.Sg6#
- 1...Rh2
- 2.Sg6#
- 1...Rh3
- 2.Sg6#
- 1...Rh4
- 2.Sg6#
- 1...Rh5
- 2.Sg6#
- 1...Rg6
- 2.Sxg6#
- 1...Sg5
- 2.f8Q#
- 1...Sf8
- 2.g8S#
- 1...Qxc7+
- 1.Qa7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(e);N_GUARD::S(C),XP(d)
- Q(e);N_PINP(H),XP(E)::P=S
- Q(e);CHECK,OGATE,XP(H)::QAR2(D),XQ(e)
- Q(e);N_PINP(H),OGATE::R(A)+P(G),XQ(e)
- Q(e);CHECK,N_PINP(H)::PXQ(e)=Q
- R(a);::P(E),XQ(e)
- R(a);XS(C)::P(E),XQ(e)
- R(g);N_GUARD::S(L)
- R(g);N_GUARD::S(L),XR(g)
- S(i);N_GUARD::P=Q
- S(i);SBLOCK::P=S
- Tries
- Try
- K(K);N_SPINP(H),P-FLIGHT
- Threat
- P=S
- Vars
- Q(e);CHECK,OGATE,XP(H)::QAR2(D),XQ(e)
- Q(e);OGATE,P_PINP(H)::R(A)+P(G),XQ(e)
- Refutation
- Q(e);P_SPINQ(e),XP(G)
- Try
- K(K);N_SPINP(H),P-FLIGHT
- Threat
- P=S
- Vars
- Q(e);CHECK,OGATE::PXQ(e)=Q
- Q(e);OGATE,XP(H)::QAR2(D),XQ(e)
- Q(e);OGATE::R(A)+P(G),XQ(e)
- Refutation
- Q(e);P_SPINQ(e),XP(G)
- Try
- K(K);N_SPINP(H),P-FLIGHT
- Vars
- Q(e);CHECK,OGATE,XP(H)::QAR2(D),XQ(e)
- Q(e);CHECK,OGATE,P_SPINQ(e),XP(G)::R1(A),XQ(e)
- Q(e);CHECK,OGATE::R(A)+P(G),XQ(e)
- Q(e);CHECK,OGATE::PXQ(e)=Q
- R(a);XS(C)::P(E),XQ(e)
- Q(e);N_GUARD::S(C),XP(d)
- R(a);::P(E),XQ(e)
- R(g);N_GUARD::S(L)
- R(g);N_GUARD::S(L),XR(g)
- S(i);N_GUARD::P=Q
- S(i);SBLOCK::P=S
- Refutation
- Q(e);XP(E)
- Try
- B(B);XR(a)
- Threat
- P(E),XQ(e)
- Vars
- Q(e);CHECK,OGATE,XP(H)::QAR2(D),XQ(e)
- Q(e);CHECK,N_PINP(H)::PXQ(e)=Q
- Q(e);N_GUARD::S(C),XP(d)
- Q(e);N_PINP(H),OGATE::R(A)+P(G),XQ(e)
- Refutation
- Q(e);N_PINP(H),P_SPINQ(e),XP(G)
- Try
- B(F);XS(i)
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,OGATE,XP(H)::QAR2(D),XQ(e)
- Q(e);CHECK,N_PINP(H)::PXQ(e)=Q
- P(f);::P=Q
- Q(e);::P=Q
- Refutation
- Q(e);N_PINP(H),P_SPINQ(e),XP(G)
- Try
- R(A);
- Vars
- Q(e);CHECK,OGATE,XP(H)::QAR2(D),XQ(e)
- Q(e);CHECK,N_PINP(H)::PXQ(e)=Q
- Q(e);N_PINP(H),XP(E)::P=S
- R(a);XS(C)::P(E),XQ(e)
- Q(e);N_PINP(H),OGATE::R(A)+P(G),XQ(e)
- Q(e);N_GUARD::S(C),XP(d)
- R(a);::P(E),XQ(e)
- R(g);N_GUARD::S(L)
- R(g);N_GUARD::S(L),XR(g)
- S(i);N_GUARD::P=Q
- S(i);SBLOCK::P=S
- Refutation
- Q(e);N_PINP(H),P_SPINQ(e),XP(G)
- Try
- R(A);
- Vars
- Q(e);CHECK,OGATE,XP(H)::QAR2(D),XQ(e)
- Q(e);CHECK,N_PINP(H)::PXQ(e)=Q
- Q(e);N_PINP(H),XP(E)::P=S
- R(a);XS(C)::P(E),XQ(e)
- Q(e);N_PINP(H),OGATE::R(A)+P(G),XQ(e)
- Q(e);N_GUARD::S(C),XP(d)
- R(a);::P(E),XQ(e)
- R(g);N_GUARD::S(L)
- R(g);N_GUARD::S(L),XR(g)
- S(i);N_GUARD::P=Q
- S(i);SBLOCK::P=S
- Refutation
- Q(e);N_PINP(H),P_SPINQ(e),XP(G)
- Try
- Q(D);
- Vars
- Q(e);CHECK,OGATE,XP(H)::QAR2(D),XQ(e)
- Q(e);CHECK,N_PINP(H)::PXQ(e)=Q
- R(a);XS(C)::P(E),XQ(e)
- Q(e);N_PINP(H),OGATE::R(A)+P(G),XQ(e)
- Q(e);N_GUARD::S(C),XP(d)
- R(a);::P(E),XQ(e)
- R(g);N_GUARD::S(L)
- R(g);N_GUARD::S(L),XR(g)
- S(i);N_GUARD::P=Q
- S(i);SBLOCK::P=S
- Refutation
- Q(e);N_PINP(H),P_SPINQ(e),XP(G)
- Try
- P(J);
- Threat
- QAR1(J)
- Vars
- Q(e);CHECK,OGATE,XP(H)::QAR2(D),XQ(e)
- Q(e);N_PINP(H),OGATE::R(A)+P(G),XQ(e)
- Refutation
- S(i);
- Try
- Actual
- Q(D);
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XP(H)::QAR2(D),XQ(e)
- Q(e);CHECK,N_PINP(H),SBLOCK::P=S
- Q(e);N_PINP(H),OGATE,XP(E)::QAB(D),XQ(e)
- Q(e);N_PINP(H),P_SPINQ(e),XP(G)::P=Q
- R(a);XS(C)::P(E),XQ(e)
- Q(e);N_PINP(H),OGATE::R(A)+P(G),XQ(e)
- Q(e);N_GUARD::S(C),XP(d)
- R(a);::P(E),XQ(e)
- R(g);N_GUARD::S(L)
- R(g);N_GUARD::S(L),XR(g)
- S(i);N_GUARD::P=Q
- S(i);SBLOCK::P=S
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).