MESON Chess Problem Database
Problem Display
PID: 134415 (2r1b1BK/4P1P1/Rq3PN1/b2PBk1P/R1r5/3N1P1P/6Q1/8 w - - 0 1)
Navon, Emanuel
4/5 HM., Sunningdale TATC Ty., 2010
#2
15 + 6
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Be6#
- 1...Qf2
- 2.Be6#
- 1...Qe3
- 2.Be6#
- 1...Qd4
- 2.Be6#
- 1...Qc5
- 2.Be6#
- 1...Qa7
- 2.Be6#
- 1...Qc7
- 2.Be6#
- 1...Qd8
- 2.Be6#
- 1...Qb1
- 2.Be6#
- 1...Qb2
- 2.Be6#
- 1...Qb3
- 2.Be6#
- 1...Qb4
- 2.Be6#
- 1...Qb5
- 2.Be6#
- 1...Qe6
- 2.Bxe6#
- 1...Qxf6
- 2.Rxf6#
- 1...Qb7
- 2.Be6#
- 1...Qb8
- 2.Be6#
- 1...Rc1
- 2.Sh4#
- 2.Rf4#
- 2.Qg4#
- 1...Rc2
- 2.Sh4#
- 2.Rf4#
- 2.Qg4#
- 1...Rc3
- 2.Sh4#
- 2.Rf4#
- 2.Qg4#
- 1...Re4
- 2.fxe4#
- 1...Rf4
- 2.Rxf4#
- 1...Rg4
- 2.Qxg4#
- 1...Rh4
- 2.Sxh4#
- 1...R4c5
- 2.Sh4#
- 2.Rf4#
- 2.Qg4#
- 1...R4c6
- 2.Sh4#
- 2.Rf4#
- 2.Qg4#
- 1...R4c7
- 2.Sh4#
- 2.Rf4#
- 2.Qg4#
- 1...Bxg6
- 2.Qxg6#
- 1...Qg1
- Tries
- 1.Sdf4?
- threat
- 2.Qg4#
- 1...Rxf4
- 2.Rxf4#
- 1...Qg1
- 2.Be6#
- 1...Bxg6!
- threat
- 1.Sgf4?
- threat
- 2.Qg4#
- 1...Rxf4
- 2.Rxf4#
- 1...Qg1
- 2.Be6#
- 1...Bxh5!
- threat
- 1.Rxc4?
- threat
- 2.Sh4#
- 2.Rf4#
- 2.Qg4#
- 1...Qxf6
- 2.Rf4#
- 2.Rxf6#
- 2.Qg4#
- 1...Bxg6
- 2.Rf4#
- 2.Qg4#
- 2.Qxg6#
- 1...Qg1
- 2.Sh4#
- 2.Be6#
- 2.Rf4#
- 1...Qf2
- 2.Be6#
- 2.Rf4#
- 2.Qg4#
- 1...Qe3
- 2.Sh4#
- 2.Be6#
- 2.Qg4#
- 1...Qd4
- 2.Be6#
- 1...Qb4
- 2.Sh4#
- 2.Be6#
- 2.Qg4#
- 1...Be1
- 2.Rf4#
- 2.Qg4#
- 1...Bd2
- 2.Sh4#
- 2.Qg4#
- 1...Rxc4!
- threat
- 1.f4?
- threat
- 2.Sh4#
- 1...Qxf6
- 2.Rxf6#
- 1...Rxf4
- 2.Rxf4#
- 1...Bxg6
- 2.Qxg6#
- 1...Qf2
- 2.Be6#
- 1...Be1!
- threat
- 1.h4?
- threat
- 2.Qg5#
- 1...Qxf6
- 2.Rxf6#
- 1...Rxh4
- 2.Sxh4#
- 1...Qg1
- 2.Be6#
- 1...Qe3
- 2.Be6#
- 1...Rg4
- 2.Qxg4#
- 2.fxg4#
- 1...Bd2!
- threat
- 1.Sdf4?
- Keys
- 1.Bf4!
- threat
- 2.Qg5#
- 1...Kxf6
- 2.Qg5#
- 1...Qxf6
- 2.Qg4#
- 1...Rxf4
- 2.Rxf4#
- 1...Qg1
- 2.Sh4#
- threat
- 1.Bf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 19
- Sets
- Q(d);N_GUARD::B(N)
- Q(d);N_GUARD::B(N),XQ(d)
- Q(d);OGATE,P_PINP(M),XP(J)::R1(I),XQ(d)
- R(a);OGATE::P(C),XR(a)
- R(a);OGATE::R1(E),XR(a)
- R(a);N_GUARD::QAB1(A),XR(a)
- R(a);N_GUARD,P_PINP(H)::S(K),XR(a)
- B(f);OGATE,P_PINB(N),XS(K)::QAB1(A),XB(f)
- Tries
- Try
- S(B);
- Threat
- QAB1(A)
- Vars
- R(a);OGATE,XS(B)::R1(E),XR(a)
- Q(d);N_GUARD::B(N)
- Refutation
- B(f);P_PINB(N),XS(K)
- Try
- S(K);
- Threat
- QAB1(A)
- Vars
- R(a);OGATE,XS(K)::R1(E),XR(a)
- Q(d);N_GUARD::B(N)
- Refutation
- B(f);P_PINB(N),XP(H)
- Try
- R(E);XR(a)
- Threat
- DUALS(3)
- Vars
- Q(d);N_GUARD::B(N)
- Refutation
- R(e);XR(E)
- Try
- P(C);
- Threat
- S(K)
- Vars
- Q(d);OGATE,P_PINP(M),XP(J)::R1(I),XQ(d)
- R(a);OGATE,XP(C)::R1(E),XR(a)
- B(f);OGATE,P_PINB(N),XS(K)::QAB1(A),XB(f)
- Q(d);N_GUARD::B(N)
- Refutation
- B(b);
- Try
- P(D);
- Threat
- QAR1(A)
- Vars
- Q(d);OGATE,P_PINP(M),XP(J)::R1(I),XQ(d)
- R(a);P_PINP(H),XP(D)::S(K),XR(a)
- Q(d);N_GUARD::B(N)
- Refutation
- B(b);
- Try
- Actual
- B(G);
- Threat
- QAR1(A)
- Vars
- K(c);P-FLIGHT,P_SPINQ(d),XP(J)::QAB1(A)
- Q(d);P_PINP(M),XP(J)::QAB1(A)
- R(a);OGATE,XB(G)::R1(E),XR(a)
- Q(d);::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).