MESON Chess Problem Database
Problem Display
PID: 118581 (2BqN3/1r6/1np5/2R1p2b/1np1kp1r/2P2RPp/3QP3/bN1K4 w - - 0 1)
Sheppard, Charles William
Sheppard's 2movers, 1963
#2
10 + 13
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qg5
- 2.Sd6#
- 1...Qf6
- 2.Sxf6#
- 1...Qc7
- 2.Sf6#
- 1...Qxd2+
- 2.Sxd2#
- 1...Qd3
- 2.Sf6#
- 1...Qd4
- 2.Sf6#
- 1...Qd5
- 2.Sf6#
- 1...Qd6
- 2.Sxd6#
- 1...Qxc8
- 2.Sd6#
- 1...Re7
- 2.Sf6#
- 1...Bxc3
- 2.Sxc3#
- 1...S4d5
- 2.Qc2#
- 1...S6d5
- 2.Rxc4#
- 1...Sd7
- 2.Sd6#
- 1...fxg3
- 2.Bf5#
- 1...Qg5
- Tries
- 1.Rxf4+?
- 1...exf4
- 2.Bf5#
- 1...Rxf4!
- 1...exf4
- 1.Rxc4+?
- 1...Qd4
- 2.Sf6#
- 1...Sxc4!
- 1...Qd4
- 1.Qd3+?
- 1...Sxd3
- 2.Sd2#
- 1...cxd3
- 2.Sd2#
- 1...Qxd3+!
- 1...Sxd3
- 1.Qd4+?
- 1...exd4
- 2.Sd2#
- 2.Bf5#
- 1...Qxd4+!
- 1...exd4
- 1.Qd5+?
- 1...S4xd5
- 2.Sd2#
- 1...S6xd5
- 2.Sd2#
- 2.Rxc4#
- 1...cxd5
- 2.Sd2#
- 1...Qxd5+!
- 1...S4xd5
- 1.Qd6?
- threat
- 2.Sd2#
- 2.Rxe5#
- 1...Qxd6+
- 2.Sxd6#
- 1...Qxc8
- 2.Rxe5#
- 2.Qxe5#
- 1...Qxe8
- 2.Sd2#
- 1...Bxc3
- 2.Sxc3#
- 1...Bxf3
- 2.Rxe5#
- 1...Sxc8
- 2.Rxe5#
- 1...Qd7
- 2.Rxe5#
- 1...Rd7
- 2.Rxe5#
- 1...Qg5
- 2.Sd2#
- 1...Qf6
- 2.Sd2#
- 2.Sxf6#
- 1...Qe7
- 2.Sd2#
- 1...Re7
- 2.Sd2#
- 2.Sf6#
- 1...Sd3
- 2.Sd2#
- 1...S4d5
- 2.Sd2#
- 1...S6d5
- 2.Sd2#
- 2.Rxc4#
- 1...Sd7!
- threat
- 1.Rxf4+?
- Keys
- 1.gxf4!
- threat
- 2.Rxe5#
- 1...Qxd2+
- 2.Sxd2#
- 1...Qxe8
- 2.Qe3#
- 1...Rxf4
- 2.Re3#
- 1...Bxc3
- 2.Sxc3#
- 1...exf4
- 2.Bf5#
- 1...Sd7
- 2.Sd6#
- 1...Qg5
- 2.Sd6#
- 2.Qe3#
- 1...Qf6
- 2.Sxf6#
- 2.Qe3#
- 1...Qc7
- 2.Sf6#
- 2.Qe3#
- 1...Qe7
- 2.Qe3#
- 1...Qd4
- 2.Sf6#
- 1...Qd5
- 2.Sf6#
- 1...Qd6
- 2.Sxd6#
- 1...Re7
- 2.Sf6#
- 1...Sd3
- 2.Qe3#
- 1...S4d5
- 2.Qc2#
- 1...S6d5
- 2.Rxc4#
- threat
- 1.gxf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 6
- Sets
- Q(m);N_GUARD,N_PINQ(C)::S(J)
- Q(m);N_GUARD,N_PINQ(C)::S(J),XQ(m)
- Q(m);CHECK,XQ(C)::S(A),XQ(m)
- Q(m);N_GUARD::S(J)
- Q(m);N_GUARD::S(J),XQ(m)
- Q(m);N_GUARD,N_PINQ(C),XB(I)::S(J)
- R(l);S_CUTQ(m)::S(J)
- B(a);XP(E)::S(A),XB(a)
- S(c);N_PINQ(C)::QAB(C)
- S(j);N_GUARD,N_PINQ(C),S_CUTQ(m)::R(H),XP(d)
- S(j);N_PINQ(C),S_CUTQ(m)::S(J)
- P(f);XP(G)::B(I)
- Tries
- Try
- R(F);CHECK,P_SPINP(D),XP(f)
- Vars
- P(h);XR(F)::B(I)
- Refutation
- R(g);XR(F)
- Try
- R(H);CHECK,XP(d)
- Vars
- Q(m);P_SPINQ(m)::S(J)
- Refutation
- S(j);XR(H)
- Try
- Q(C);CHECK
- Vars
- S(c);XQ(C)::S(A)
- P(d);XQ(C)::S(A)
- Refutation
- Q(m);CHECK,XQ(C)
- Try
- Q(C);CHECK
- Refutation
- Q(m);CHECK,XQ(C)
- Try
- Q(C);CHECK
- Vars
- S(c);XQ(C)::S(A)
- P(k);XQ(C)::S(A)
- Refutation
- Q(m);CHECK,XQ(C)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(m);CHECK,XQ(C)::S(J),XQ(m)
- Q(m);N_PINQ(C),XS(J)::S(A)
- B(a);XP(E)::S(A),XB(a)
- B(i);P_PINP(D),XR(F)::R1(H),XP(h)
- S(j);XB(I)::R1(H),XP(h)
- Q(m);::R1(H),XP(h)
- R(l);::R1(H),XP(h)
- Q(m);N_PINQ(C)::S(A)
- S(c);N_PINQ(C)::S(A)
- Refutation
- S(j);N_PINQ(C)
- Try
- Actual
- P(G);XP(f)
- Threat
- R1(H),XP(h)
- Vars
- Q(m);CHECK,XQ(C)::S(A),XQ(m)
- Q(m);N_PINQ(C),XS(J)::QAR1(C)
- R(g);SBLOCK,XP(G)::R1(F)
- B(a);XP(E)::S(A),XB(a)
- P(h);XP(G)::B(I)
- S(j);N_PINQ(C),S_CUTQ(m)::S(J)
- Q(m);N_PINQ(C)::QAR1(C)
- Q(m);N_GUARD::S(J)
- Q(m);N_GUARD::S(J),XQ(m)
- R(l);S_CUTQ(m)::S(J)
- S(c);N_PINQ(C)::QAR1(C)
- S(c);N_PINQ(C)::QAB(C)
- S(j);N_GUARD,N_PINQ(C),S_CUTQ(m)::R(H),XP(d)
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).