MESON Chess Problem Database
Problem Display
PID: 15932 (3Q4/2PpK3/p1pBNPp1/Rn1k4/1P2p3/2pP1RP1/4PP2/3n1N1B w - - 0 1)
Segers, Marcel
2nd Place, Problemas, 1989
#2
15 + 9
SOLUTION
- SOUND
- Sets
- 1...Sb2
- 2.Se3#
- 1...Sxf2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...exd3
- 2.Rf4#
- 1...exf3
- 2.Bxf3#
- 2.e4#
- 1...e3
- 2.Rxe3#
- 2.Rf4#
- 2.Rf5#
- 1...c5
- 2.Qa8#
- 1...g5
- 2.Rf5#
- 1...dxe6
- 2.Bf4#
- 1...Sb2
- Tries
- 1.Kxd7?
- 1...Sxf2
- 2.Se3#
- 1...exd3
- 2.Rf4#
- 1...exf3
- 2.Bxf3#
- 2.e4#
- 1...Sb2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...e3
- 2.Rxe3#
- 2.Rf4#
- 2.Rf5#
- 1...c5
- 2.Qa8#
- 1...g5
- 2.Rf5#
- 1...c2!
- 1...Sxf2
- 1.Bg2?
- 1...Sxf2
- 2.Se3#
- 1...exd3
- 2.Rf4#
- 1...exf3
- 2.Bxf3#
- 2.e4#
- 1...dxe6
- 2.Bf4#
- 1...c5
- 2.Qa8#
- 1...Sb2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...e3
- 2.Rxe3#
- 2.Rf4#
- 2.Rf5#
- 1...g5
- 2.Rf5#
- 1...c2!
- 1...Sxf2
- 1.Bf4?
- threat
- 2.Qxd7#
- 1...c5
- 2.Qa8#
- 1...d6
- 2.Qxd6#
- 1...exd3!
- threat
- 1.Re3?
- threat
- 2.Bxe4#
- 1...dxe6
- 2.Bf4#
- 1...Sxf2!
- threat
- 1.Rf4?
- threat
- 2.Bxe4#
- 1...Sxf2
- 2.Se3#
- 1...dxe6!
- threat
- 1.Rxb5+?
- 1...cxb5
- 2.Qa8#
- 1...c5
- 2.Rxc5#
- 2.Qa8#
- 1...axb5!
- 1...cxb5
- 1.Qxd7?
- threat
- 2.Bf4#
- 1...exd3
- 2.Rf4#
- 1...c5!
- threat
- 1.dxe4+?
- 1...Kxe4
- 2.Rf4#
- 1...Kc4!
- 1...Kxe4
- 1.g4?
- 1...Sxf2
- 2.Se3#
- 1...exd3
- 2.Rf4#
- 1...exf3
- 2.Bxf3#
- 2.e4#
- 1...dxe6
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 1...c5
- 2.Qa8#
- 1...Sb2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...e3
- 2.Rxe3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rf5#
- 1...g5
- 2.Rf5#
- 1...c2!
- 1...Sxf2
- 1.f7?
- 1...Sxf2
- 2.Se3#
- 1...exd3
- 2.Rf4#
- 1...exf3
- 2.Bxf3#
- 2.e4#
- 1...dxe6
- 2.Bf4#
- 1...c5
- 2.Qa8#
- 1...Sb2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...e3
- 2.Rxe3#
- 2.Rf4#
- 2.Rf5#
- 2.Rf6#
- 1...g5
- 2.Rf5#
- 1...c2!
- 1...Sxf2
- 1.c8Q?
- 1...Sxf2
- 2.Se3#
- 1...exd3
- 2.Rf4#
- 1...exf3
- 2.Bxf3#
- 2.e4#
- 1...dxe6
- 2.Bf4#
- 2.Bc7#
- 2.Bb8#
- 1...Sb2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...e3
- 2.Rxe3#
- 2.Rf4#
- 2.Rf5#
- 1...c5
- 2.Qb7#
- 2.Qxc5#
- 2.Qa8#
- 1...g5
- 2.Rf5#
- 1...c2!
- 1...Sxf2
- 1.c8S?
- threat
- 2.Sb6#
- 1...exd3
- 2.Rf4#
- 1...dxe6
- 2.Bf4#
- 2.Bc7#
- 2.Bb8#
- 1...c5!
- threat
- 1.c8B?
- 1...Sxf2
- 2.Se3#
- 1...exd3
- 2.Rf4#
- 1...exf3
- 2.Bxf3#
- 2.e4#
- 1...dxe6
- 2.Bf4#
- 2.Bc7#
- 2.Bb8#
- 1...c5
- 2.Bb7#
- 1...Sb2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...e3
- 2.Rxe3#
- 2.Rf4#
- 2.Rf5#
- 1...g5
- 2.Rf5#
- 1...c2!
- 1...Sxf2
- 1.c8R?
- 1...Sxf2
- 2.Se3#
- 1...exd3
- 2.Rf4#
- 1...exf3
- 2.Bxf3#
- 2.e4#
- 1...dxe6
- 2.Bf4#
- 2.Bc7#
- 2.Bb8#
- 1...Sb2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...e3
- 2.Rxe3#
- 2.Rf4#
- 2.Rf5#
- 1...c5
- 2.Rxc5#
- 1...g5
- 2.Rf5#
- 1...c2!
- 1...Sxf2
- 1.Kxd7?
- Keys
- 1.e3!
- threat
- 2.Sf4#
- 1...Sxe3
- 2.Sxe3#
- 1...exd3
- 2.Rf4#
- 1...dxe6
- 2.Bf4#
- 1...c5
- 2.Qa8#
- 1...g5
- 2.Rf5#
- threat
- 1.e3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- S(a);N_GUARD::S(A)
- S(a);N_GUARD,XP(D)::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(c);OGATEB,XP(E)::B(B)+R(F)
- P(g);N_SPINS(d),OGATEB::QAB(O)
- P(h);N_GUARD::R(F)
- P(i);OGATEB,XS(K)::QAR(O)+B(J)
- Tries
- Try
- K(N);P-FLIGHT,XP(i)
- Vars
- S(a);N_GUARD,XP(D)::S(A)
- P(c);OGATEB,XP(E)::B(B)+R(F)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(g);N_SPINS(d),OGATEB::QAB(O)
- P(h);N_GUARD::R(F)
- Refutation
- P(b);
- Try
- B(B);
- Vars
- S(a);N_GUARD,XP(D)::S(A)
- P(c);OGATEB,XP(E)::B(B)+R(F)
- P(i);OGATEB,XS(K)::QAR(O)+B(J)
- P(g);N_SPINS(d),OGATEB::QAB(O)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(h);N_GUARD::R(F)
- Refutation
- P(b);
- Try
- B(J);P_PINP(i)
- Threat
- QAR2(O),XP(i)
- Vars
- P(g);N_SPINS(d),OGATEB::QAB(O)
- P(i);OGATE::QAR1(O),XP(i)
- Refutation
- P(c);XP(E)
- Try
- R(F);P_PINP(c)
- Threat
- B(B),XP(c)
- Vars
- P(i);OGATEB,XS(K)::QAR(O)+B(J)
- Refutation
- S(a);XP(D)
- Try
- R(F);P_PINP(c)
- Threat
- B(B),XP(c)
- Vars
- S(a);N_GUARD,XP(D)::S(A)
- Refutation
- P(i);XS(K)
- Try
- R(I);CHECK,XS(d)
- Vars
- P(g);S_CUTP(f),XR(I)::QAB(O)
- Refutation
- P(f);XR(I)
- Try
- Q(O);XP(i)
- Threat
- QAR(O)+B(J)
- Vars
- P(c);OGATEB,XP(E)::B(B)+R(F)
- Refutation
- P(g);N_SPINS(d)
- Try
- P(E);CHECK,XP(c)
- Vars
- K(e);N_SPINS(d),S_FLIGHT,XP(E)::B(B)+R(F),DCHECK
- Refutation
- K(e);N_SPINS(d),S_FLIGHT
- Try
- P(G);
- Vars
- S(a);N_GUARD,XP(D)::S(A)
- P(c);OGATEB,XP(E)::B(B)+R(F)
- P(g);N_SPINS(d),OGATEB::QAB(O)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(h);N_GUARD::R(F)
- Refutation
- P(b);
- Try
- P(L);
- Vars
- S(a);N_GUARD,XP(D)::S(A)
- P(c);OGATEB,XP(E)::B(B)+R(F)
- P(i);OGATEB,XS(K)::QAR(O)+B(J)
- P(g);N_SPINS(d),OGATEB::QAB(O)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(h);N_GUARD::R(F)
- Refutation
- P(b);
- Try
- P(M);
- Vars
- S(a);N_GUARD,XP(D)::S(A)
- P(c);OGATEB,XP(E)::B(B)+R(F)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(h);N_GUARD::R(F)
- Refutation
- P(b);
- Try
- P(M);
- Threat
- S(M)
- Vars
- P(c);OGATEB,XP(E)::B(B)+R(F)
- Refutation
- P(g);N_SPINS(d)
- Try
- P(M);
- Vars
- S(a);N_GUARD,XP(D)::S(A)
- P(c);OGATEB,XP(E)::B(B)+R(F)
- P(g);N_SPINS(d),OGATEB::B(M)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(h);N_GUARD::R(F)
- Refutation
- P(b);
- Try
- P(M);
- Vars
- S(a);N_GUARD,XP(D)::S(A)
- P(c);OGATEB,XP(E)::B(B)+R(F)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(g);N_SPINS(d),OGATE::R1(M),XP(g)
- P(h);N_GUARD::R(F)
- Refutation
- P(b);
- Try
- Actual
- P(C);
- Threat
- S(K)
- Vars
- S(a);XP(C)::S(A),XS(a)
- P(c);OGATEB,XP(E)::B(B)+R(F)
- P(i);OGATEB,XS(K)::QAR(O)+B(J)
- P(g);N_SPINS(d),OGATEB::QAB(O)
- P(h);N_GUARD::R(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).