MESON Chess Problem Database
Problem Display
PID: 241587 (B1rR4/6b1/1B3P2/1K1Np1p1/NQPrkPP1/pR1pp3/2P1P3/1n6 w - - 0 1)
Segers, Marcel
Schweizerische Schachzeitung, 1990
#2
14 + 10
SOLUTION
- SOUND
- Sets
- 1...Rdxc4
- 2.cxd3#
- 1...Rxd5+
- 2.c5#
- 1...Rc5+
- 2.Sxc5#
- 1...Rxa8
- 2.Sc5#
- 1...Rb8
- 2.Sc5#
- 1...Rxd8
- 2.Sc5#
- 1...Sd2
- 2.Sac3#
- 1...Sc3+
- 2.Saxc3#
- 1...dxc2
- 2.Rxe3#
- 1...dxe2
- 2.Rxe3#
- 1...d2
- 2.Rxe3#
- 1...exf4
- 2.Qe7#
- 1...gxf4
- 2.Sdc3#
- 1...Rdxc4
- Tries
- 1.Rxc8?
- threat
- 2.Sc5#
- 1...Rxd5+
- 2.cxd5#
- 2.c5#
- 1...Sc3+
- 2.Saxc3#
- 1...Rxc4
- 2.Rxc4#
- 2.Qxc4#
- 2.cxd3#
- 1...dxe2
- 2.Rxe3#
- 1...exf4
- 2.Re8#
- 2.Qe7#
- 1...Bf8!
- threat
- 1.Re8?
- threat
- 2.Rxe5#
- 1...Rxd5+
- 2.c5#
- 1...Rc5+
- 2.Sxc5#
- 1...Sc3+
- 2.Saxc3#
- 1...Rxe8
- 2.Sc5#
- 1...dxe2
- 2.Rxe3#
- 1...gxf4
- 2.Sdc3#
- 1...Bxf6!
- threat
- 1.Qe7?
- threat
- 2.Qxe5#
- 1...Rc5+
- 2.Sxc5#
- 1...Sc3+
- 2.Saxc3#
- 1...Bxf6
- 2.Qh7#
- 1...dxe2
- 2.Rxe3#
- 1...gxf4
- 2.Sdc3#
- 1...Rxd5+!
- threat
- 1.c5?
- threat
- 2.cxd3#
- 1...Rxb4+
- 2.Rxb4#
- 1...Rxc5+
- 2.Sxc5#
- 1...Sc3+
- 2.Saxc3#
- 1...dxc2
- 2.Rxe3#
- 1...dxe2
- 2.Rxe3#
- 1...Rc4
- 2.Qxc4#
- 1...d2
- 2.Rxe3#
- 1...exf4!
- threat
- 1.Rxc8?
- Keys
- 1.Rxd3!
- threat
- 2.Rxe3#
- 1...Rxd5+
- 2.c5#
- 1...Rc5+
- 2.Sxc5#
- 1...Sc3+
- 2.Saxc3#
- 1...Rxd3
- 2.cxd3#
- 1...exf4
- 2.Qe7#
- 1...gxf4
- 2.Sdc3#
- threat
- 1.Rxd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- R(e);N_GUARD,P_SPINR(e),XP(F)::P(A),XP(c)
- R(e);CHECK,P_SPINR(e),XS(J)::QAR(E)+P(F)
- R(j);CHECK,N_GUARD::S(D),XR(j)
- R(j);N_GUARD,XB(M)::S(D)
- R(j);N_GUARD,P_PINB(K)::S(D)
- R(j);N_GUARD,XR(N)::S(D)
- S(a);N_GUARD::S(D)
- S(a);CHECK,N_GUARD::S(D),XS(a)
- P(c);OGATE,XP(A)::R1(C),XP(d)
- P(c);OGATE,XP(B)::R1(C),XP(d)
- P(c);OGATE::R1(C),XP(d)
- P(g);OGATEB,XP(G)::QAR(E)
- P(h);SBLOCK,XP(G)::B(M)+S(J),DCHECK
- Tries
- Try
- R(N);XR(j)
- Threat
- S(D)
- Vars
- S(a);CHECK,N_GUARD::S(D),XS(a)
- P(c);OGATE,XP(B)::R1(C),XP(d)
- Refutation
- B(i);
- Try
- R(N);P_PINP(g)
- Threat
- R1(N),XP(g)
- Vars
- R(e);CHECK,P_SPINR(e),XS(J)::QAR(E)+P(F)
- R(j);CHECK,N_GUARD::S(D),XR(j)
- S(a);CHECK,N_GUARD::S(D),XS(a)
- R(j);N_GUARD,N_SPINP(g),XR(N)::S(D)
- P(c);OGATE,XP(B)::R1(C),XP(d)
- P(h);SBLOCK,XP(G)::B(M)+S(J),DCHECK
- Refutation
- B(i);XP(L)
- Try
- Q(E);P_PINP(g)
- Threat
- QAR1(E),XP(g)
- Vars
- R(j);CHECK,N_GUARD::S(D),XR(j)
- S(a);CHECK,N_GUARD::S(D),XS(a)
- B(i);OGATE,XP(L)::QAB(E)
- P(c);OGATE,XP(B)::R1(C),XP(d)
- P(h);SBLOCK,XP(G)::B(M)+S(J),DCHECK
- Refutation
- R(e);CHECK,P_SPINR(e),XS(J)
- Try
- P(F);P_PINR(e)
- Threat
- P(A),XP(c)
- Vars
- R(e);CHECK,N_SPINR(e),OGATE,XQ(E)::R(C),XR(e)
- R(j);CHECK,XP(F)::S(D),XR(j)
- S(a);CHECK,N_GUARD::S(D),XS(a)
- P(c);OGATE,XP(A)::R1(C),XP(d)
- P(c);OGATE,XP(B)::R1(C),XP(d)
- R(e);OGATEB::QAR2(E),XR(e)
- P(c);OGATE::R1(C),XP(d)
- Refutation
- P(g);XP(G)
- Try
- Actual
- R(C);XP(c)
- Threat
- R1(C),XP(d)
- Vars
- R(e);CHECK,P_SPINR(e),XS(J)::QAR(E)+P(F)
- R(j);CHECK,N_GUARD::S(D),XR(j)
- S(a);CHECK,N_GUARD::S(D),XS(a)
- R(e);OGATE,XR(C)::P(A),XR(e)
- P(g);OGATEB,XP(G)::QAR(E)
- P(h);SBLOCK,XP(G)::B(M)+S(J),DCHECK
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).