MESON Chess Problem Database
Problem Display
PID: 44711 (4b1q1/p1K1R2p/3p1p2/B2k2PN/B2P4/3PP2Q/n3P1P1/2nN1rbr w - - 0 1)
Howard, David M
Pike, Arthur G
Problem Observer, 2002
#2
13 + 12
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Qxe6#
- 1...Qxg5
- 2.Qe6#
- 1...Qg6
- 2.Qe6#
- 1...Qg7
- 2.Qe6#
- 1...Qf8
- 2.Qe6#
- 1...Qh8
- 2.Qe6#
- 1...Rxd1
- 2.Sf4#
- 2.Sxf6#
- 2.Qf5#
- 2.Qf3#
- 1...Re1
- 2.Sf4#
- 2.Sxf6#
- 2.Qf5#
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 1...Rf4
- 2.Sxf4#
- 1...Rf5
- 2.Qxf5#
- 1...Bf2
- 2.Sf4#
- 2.Sxf6#
- 2.Qf5#
- 2.Qf3#
- 1...Bxh5
- 2.Bc6#
- 1...Bc6
- 2.Bxc6#
- 1...Bg6
- 2.Bc6#
- 1...Bf7
- 2.Bc6#
- 1...Sxe2
- 2.Bb3#
- 1...Sb3
- 2.Bxb3#
- 1...Sxd3
- 2.Bb3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...f5
- 2.Sf6#
- 1...Qe6
- Tries
- 1.Sf2?
- threat
- 2.Sf4#
- 2.Sxf6#
- 2.Qf5#
- 2.Qf3#
- 1...Qxg5
- 2.Qe6#
- 2.Qf3#
- 1...Rxh3
- 2.Sf4#
- 2.Sxf6#
- 1...Bxh5
- 2.Bc6#
- 2.Qf5#
- 1...Sxe2
- 2.Sxf6#
- 2.Bb3#
- 2.Qf5#
- 2.Qf3#
- 1...Sxd3
- 2.Bb3#
- 1...fxg5
- 2.Sf6#
- 2.Qf5#
- 2.Qf3#
- 1...Qe6
- 2.Sf4#
- 2.Qxe6#
- 1...Qf7
- 2.Sf4#
- 2.Qf5#
- 2.Qf3#
- 1...Qg6
- 2.Sf4#
- 2.Qe6#
- 1...Qg7
- 2.Sf4#
- 2.Qf5#
- 2.Qe6#
- 2.Qf3#
- 1...Qf8
- 2.Sf4#
- 2.Qf5#
- 2.Qe6#
- 2.Qf3#
- 1...Qh8
- 2.Sf4#
- 2.Qf5#
- 2.Qe6#
- 2.Qf3#
- 1...Bh2
- 2.Sxf6#
- 2.Qf3#
- 1...Bg6
- 2.Sf4#
- 2.Sxf6#
- 2.Bc6#
- 1...Bd7
- 2.Sf4#
- 2.Sxf6#
- 2.Qf3#
- 1...Sc3
- 2.Sf4#
- 2.Sxf6#
- 2.Qf5#
- 1...f5
- 2.Sf4#
- 2.Sf6#
- 2.Qxf5#
- 2.Qf3#
- 1...Rxf2!
- threat
- 1.Bb6?
- threat
- 2.e4#
- 1...Bxe3
- 2.Sxe3#
- 1...Sxd3
- 2.Bb3#
- 1...Qe6
- 2.Qxe6#
- 1...Qg6
- 2.Qe6#
- 1...Rf4
- 2.Sxf4#
- 1...Bg6
- 2.Bc6#
- 1...Sc3
- 2.Sxc3#
- 1...f5
- 2.Sf6#
- 1...axb6!
- threat
- 1.Qg4?
- threat
- 2.Qe4#
- 1...Sxd3
- 2.Bb3#
- 1...Qe6
- 2.Qxe6#
- 1...Qg6
- 2.Qe6#
- 1...Rf4
- 2.Sxf4#
- 1...Bg6
- 2.Bc6#
- 1...Sc3
- 2.Sxc3#
- 1...f5
- 2.Sf6#
- 1...Rh4!
- threat
- 1.Qd7?
- threat
- 2.Bc6#
- 2.Qxd6#
- 1...Bxe3
- 2.Qxd6#
- 1...Sxd3
- 2.Bb3#
- 1...Qe6
- 2.Bc6#
- 2.Qxe6#
- 1...Bh2
- 2.Bc6#
- 1...Sb4
- 2.Sc3#
- 2.Qxd6#
- 1...Bxd7!
- threat
- 1.Sf2?
- Keys
- 1.Bc3!
- threat
- 2.e4#
- 1...Bxe3
- 2.Sxe3#
- 1...Sxd3
- 2.Bb3#
- 1...Sxc3
- 2.Sxc3#
- 1...Qe6
- 2.Qxe6#
- 1...Qg6
- 2.Qe6#
- 1...Rf4
- 2.Sxf4#
- 1...Bg6
- 2.Bc6#
- 1...f5
- 2.Sf6#
- threat
- 1.Bc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 12
- Sets
- Q(l);N_GUARD::QAB1(F),XQ(l)
- Q(l);N_GUARD,XP(J)::QAB1(F)
- Q(l);N_GUARD::QAB1(F)
- Q(l);N_GUARD,P_PINR(M)::QAB1(F)
- R(b);N_GUARD::QAB(F),XR(b)
- R(b);N_GUARD::S(K),XR(b)
- R(b);N_GUARD::QAR2(F),XR(b)
- B(k);N_GUARD,XS(K)::B(G)
- B(k);N_GUARD::B(G),XB(k)
- B(k);N_GUARD::B(G)
- S(a);N_GUARD,XP(B)::B(G)
- S(a);N_GUARD::B(G),XS(a)
- S(a);N_GUARD,XP(D)::B(G)
- S(e);N_GUARD::S(A),XS(e)
- S(e);N_GUARD::S(A)
- P(h);S_CUTR(b)::S(K)
- Tries
- Try
- S(A);
- Threat
- DUALS(4)
- Vars
- S(a);N_GUARD,XP(D)::B(G)
- Refutation
- R(b);XS(A)
- Try
- B(I);
- Threat
- P(E)
- Vars
- B(c);XP(E)::S(A),XB(c)
- S(a);N_GUARD,XP(D)::B(G)
- Q(l);N_GUARD::QAB1(F),XQ(l)
- Q(l);N_GUARD::QAB1(F)
- R(b);N_GUARD::S(K),XR(b)
- B(k);N_GUARD::B(G)
- S(e);N_GUARD::S(A),XS(e)
- P(h);S_CUTR(b)::S(K)
- Refutation
- P(i);XB(I)
- Try
- Q(F);
- Threat
- QAB1(F)
- Vars
- S(a);N_GUARD,XP(D)::B(G)
- Q(l);N_GUARD::QAB1(F),XQ(l)
- Q(l);N_GUARD::QAB1(F)
- R(b);N_GUARD::S(K),XR(b)
- B(k);N_GUARD::B(G)
- S(e);N_GUARD::S(A),XS(e)
- P(h);S_CUTR(b)::S(K)
- Refutation
- R(d);
- Try
- Q(F);P_PINP(g)
- Threat
- DUALS(2)
- Vars
- B(c);XP(E)::QAR1(F),XP(g)
- S(a);N_GUARD,XP(D)::B(G)
- B(c);::B(G)
- Refutation
- B(k);N_SPINP(g),XQ(F)
- Try
- Actual
- B(I);
- Threat
- P(E)
- Vars
- B(c);XP(E)::S(A),XB(c)
- S(a);N_GUARD,XP(D)::B(G)
- S(e);XB(I)::S(A),XS(e)
- Q(l);N_GUARD::QAB1(F),XQ(l)
- Q(l);N_GUARD::QAB1(F)
- R(b);N_GUARD::S(K),XR(b)
- B(k);N_GUARD::B(G)
- P(h);S_CUTR(b)::S(K)
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).