MESON Chess Problem Database
Problem Display
PID: 254420 (Q1N5/2p2Rb1/B3P3/3p4/2r1kPK1/R3Pp2/NBPn1Pn1/8 w - - 0 1)
Gebura, Stanislaw
Probleemblad, 1983
#2
13 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxc2
- 2.Bd3#
- 1...Ra4
- 2.Bd3#
- 1...Rb4
- 2.Bd3#
- 1...Rd4
- 2.Sc3#
- 1...Rc5
- 2.Bd3#
- 1...Rc6
- 2.Bd3#
- 1...Sxe3+
- 2.Rxe3#
- 1...Sxf4
- 2.Rxf4#
- 1...c5
- 2.Sd6#
- 1...c6
- 2.Sd6#
- 1...Rxc2
- Tries
- 1.Sb4?
- threat
- 2.Qxd5#
- 1...Sxe3+
- 2.Rxe3#
- 1...Rxb4
- 2.Bd3#
- 1...Sxf4
- 2.Rxf4#
- 1...Rc5
- 2.Bd3#
- 1...Rc6
- 2.Bd3#
- 1...c6
- 2.Sd6#
- 1...Rd4!
- threat
- 1.Se7?
- threat
- 2.Qxd5#
- 1...Sxe3+
- 2.Rxe3#
- 1...Sxf4
- 2.Rxf4#
- 1...Rd4
- 2.Sc3#
- 1...Rc5
- 2.Bd3#
- 1...Rc6
- 2.Bd3#
- 1...c6!
- threat
- 1.Bxc4?
- threat
- 2.Bd3#
- 2.Bxd5#
- 2.Qxd5#
- 1...Sxe3+
- 2.Rxe3#
- 1...Sxf4
- 2.Rxf4#
- 1...Se1
- 2.Bxd5#
- 2.Qxd5#
- 1...c6
- 2.Sd6#
- 2.Bd3#
- 1...Sxc4!
- threat
- 1.Ra5?
- threat
- 2.Qxd5#
- 1...Sxf4
- 2.Rxf4#
- 1...Rd4
- 2.Sc3#
- 1...Rc5
- 2.Bd3#
- 1...Rc6
- 2.Bd3#
- 1...c5
- 2.Sd6#
- 1...c6
- 2.Sd6#
- 1...Sxe3+!
- threat
- 1.Rd7?
- threat
- 2.Qxd5#
- 1...Sxe3+
- 2.Rxe3#
- 1...Rd4
- 2.Sc3#
- 1...Rc5
- 2.Bd3#
- 1...Rc6
- 2.Bd3#
- 1...c6
- 2.Sd6#
- 1...Sxf4!
- threat
- 1.Sb4?
- Keys
- 1.Rf5!
- threat
- 2.Qxd5#
- 1...Sxe3+
- 2.Rxe3#
- 1...Sxf4
- 2.Rxf4#
- 1...Rd4
- 2.Sc3#
- 1...Rc5
- 2.Bd3#
- 1...Rc6
- 2.Bd3#
- 1...Be5
- 2.Rxe5#
- 1...c6
- 2.Sd6#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- R(d);OGATE,XP(C)::B(I)
- R(d);OGATE::B(I)
- R(d);N_GUARD,S_CUTB(h)::S(A)
- R(d);N_SPINP(f),OGATE::B(I)
- S(b);CHECK,OGATE,XP(F)::R1(E),XS(b)
- S(b);OGATE,XP(G)::R1(K),XS(b)
- P(g);N_GUARD::S(M)
- P(g);N_GUARD,N_SPINP(f)::S(M)
- Tries
- Try
- S(A);
- Threat
- QAB1(L),XP(f)
- Vars
- S(b);CHECK,OGATE,XP(F)::R1(E),XS(b)
- R(d);OGATE,XS(A)::B(I)
- S(b);OGATE,XP(G)::R1(K),XS(b)
- R(d);OGATE::B(I)
- R(d);N_SPINP(f),OGATE::B(I)
- P(g);N_GUARD,N_SPINP(f)::S(M)
- Refutation
- R(d);
- Try
- S(M);
- Threat
- QAB1(L),XP(f)
- Vars
- S(b);CHECK,OGATE,XP(F)::R1(E),XS(b)
- S(b);OGATE,XP(G)::R1(K),XS(b)
- R(d);N_GUARD,S_CUTB(h)::S(A)
- R(d);OGATE::B(I)
- R(d);N_SPINP(f),OGATE::B(I)
- Refutation
- P(g);N_SPINP(f)
- Try
- B(I);XR(d)
- Threat
- DUALS(3)
- Vars
- S(b);CHECK,OGATE,XP(F)::R1(E),XS(b)
- S(b);OGATE,XP(G)::R1(K),XS(b)
- Refutation
- S(a);XB(I)
- Try
- R(E);
- Threat
- QAB1(L),XP(f)
- Vars
- S(b);OGATE,XP(G)::R1(K),XS(b)
- R(d);N_GUARD,S_CUTB(h)::S(A)
- R(d);OGATE::B(I)
- R(d);N_SPINP(f),OGATE::B(I)
- P(g);N_GUARD::S(M)
- P(g);N_GUARD,N_SPINP(f)::S(M)
- Refutation
- S(b);CHECK,XP(F)
- Try
- R(K);
- Threat
- QAB1(L),XP(f)
- Vars
- S(b);CHECK,OGATE,XP(F)::R1(E),XS(b)
- R(d);N_GUARD,S_CUTB(h)::S(A)
- R(d);OGATE::B(I)
- R(d);N_SPINP(f),OGATE::B(I)
- P(g);N_GUARD,N_SPINP(f)::S(M)
- Refutation
- S(b);XP(G)
- Try
- Actual
- R(K);
- Threat
- QAB1(L),XP(f)
- Vars
- S(b);CHECK,OGATE,XP(F)::R1(E),XS(b)
- S(b);OGATE,XP(G)::R1(K),XS(b)
- R(d);N_GUARD,S_CUTB(h)::S(A)
- R(d);OGATE::B(I)
- R(d);N_SPINP(f),OGATE::B(I)
- B(h);N_GUARD::R1(K),XB(h)
- P(g);N_GUARD,N_SPINP(f)::S(M)
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).