MESON Chess Problem Database
Problem Display
PID: 228182 (1b3R2/3r4/b7/1BPR2Pp/1P2kP2/3p1N1Q/KB4n1/3N1r2 w - - 0 1)
Forster, Klaus
Die Schwalbe, 2020
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Kxd5
- 2.Sc3#
- 1...Rxf3
- 2.Qf5#
- 1...Rxd5
- 2.Sd2#
- 1...Rd6
- 2.Re5#
- 1...Ra7
- 2.Rd4#
- 1...Rb7
- 2.Rd4#
- 1...Rc7
- 2.Rd4#
- 2.Re5#
- 1...Re7
- 2.Rd4#
- 1...Rf7
- 2.Rd4#
- 1...Rg7
- 2.Rd4#
- 1...Rh7
- 2.Rd4#
- 1...Be5
- 2.Rxe5#
- 1...Bd6
- 2.Rd4#
- 1...Ba7
- 2.Re5#
- 1...Se3
- 2.Sc3#
- 1...Kxd5
- Tries
- 1.Sd4?
- threat
- 2.Sc3#
- 2.Qf5#
- 1...Kxd5
- 2.Qe6#
- 1...Rxd1
- 2.Qf3#
- 1...Rxf4
- 2.Sc3#
- 1...Rxd5
- 2.Qxd3#
- 1...Rf3
- 2.Qf5#
- 2.Qxf3#
- 1...Be5
- 2.Sc3#
- 2.Rxe5#
- 1...Se3
- 2.Sc3#
- 1...Sh4
- 2.Sc3#
- 1...Rf7!
- threat
- 1.Bc6?
- threat
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 2.Rxd7#
- 1...Rxd1
- 2.Re5#
- 1...Rxf3
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 2.Rxd7#
- 2.Qf5#
- 1...Rxd5
- 2.Sd2#
- 1...Bxf4
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 2.Rxd7#
- 1...Sxf4
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 1...Rf7
- 2.Rd4#
- 2.Rf5#
- 1...Rf2
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 2.Rxd7#
- 1...Rd6
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 2.Rxd6#
- 1...Ra7
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 2.Rdf5#
- 2.Rd6#
- 2.Rd7#
- 2.Rdd8#
- 1...Rb7
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 2.Rdf5#
- 2.Rd6#
- 2.Rd7#
- 2.Rdd8#
- 1...Rc7
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 1...Re7
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 2.Rdf5#
- 2.Rd6#
- 2.Rd7#
- 2.Rdd8#
- 1...Rg7
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 2.Rdf5#
- 2.Rd6#
- 2.Rd7#
- 2.Rdd8#
- 1...Rh7
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 2.Rdf5#
- 2.Rd6#
- 2.Rd7#
- 2.Rdd8#
- 1...Rd8
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 2.Rd7#
- 2.Rdxd8#
- 1...Bb5
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 1...Bb7
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 1...Be5
- 2.Sd2#
- 2.Rd4#
- 2.Rxe5#
- 2.Rd6#
- 2.Rxd7#
- 1...Bd6
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 2.Rdf5#
- 2.Rxd6#
- 1...Se3
- 2.Sc3#
- 2.Sd2#
- 2.Rd4#
- 2.Re5#
- 1...d2
- 2.Sxd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rxd7#
- 1...Bc4+!
- threat
- 1.Rxd3?
- threat
- 2.Sc3#
- 2.Sd2#
- 2.Qf5#
- 1...Rxd1
- 2.Qf5#
- 1...Rxf3
- 2.Sc3#
- 2.Qf5#
- 2.Qxf3#
- 1...Bxb5
- 2.Sd2#
- 2.Qf5#
- 1...Bxf4
- 2.Sc3#
- 2.Qf5#
- 1...Rd4
- 2.Sc3#
- 2.Rxd4#
- 2.Qf5#
- 1...Rf7
- 2.Rd4#
- 1...Rf2
- 2.Sxf2#
- 2.Sc3#
- 2.Qf5#
- 1...Rd5
- 2.Sc3#
- 2.Sd2#
- 1...Be5
- 2.Sd2#
- 2.Qf5#
- 1...Se3
- 2.Sc3#
- 2.Sd2#
- 1...Sh4
- 2.Sc3#
- 2.Sd2#
- 1...Rxd3!
- threat
- 1.Rxd7?
- threat
- 2.Sd2#
- 2.Bc6#
- 2.Rd4#
- 1...Rxf3
- 2.Bc6#
- 2.Rd4#
- 2.Qf5#
- 1...Bxb5
- 2.Sd2#
- 2.Rd4#
- 1...Bxf4
- 2.Bc6#
- 2.Rd4#
- 1...Sxf4
- 2.Sd2#
- 2.Rd4#
- 1...Bd6
- 2.Bc6#
- 1...Rf2
- 2.Bc6#
- 2.Rd4#
- 1...Bb7
- 2.Sd2#
- 2.Bxd3#
- 2.Rd4#
- 1...Be5
- 2.Sd2#
- 2.Bc6#
- 1...Se3
- 2.Sc3#
- 2.Sd2#
- 2.Rd4#
- 1...d2
- 2.Sxd2#
- 2.Bc6#
- 2.Rd4#
- 1...Rxd1!
- threat
- 1.Re8+?
- 1...Kxf4
- 2.Rf5#
- 1...Kxd5
- 2.Sc3#
- 2.Qe6#
- 1...Re7
- 2.Rd4#
- 1...Be5!
- 1...Kxf4
- 1.Qe6+?
- 1...Be5
- 2.Sd2#
- 1...Kxf3!
- 1...Be5
- 1.Sd4?
- Keys
- 1.Se5!
- threat
- 2.Sc3#
- 2.Qxd3#
- 1...Kxd5
- 2.Bc6#
- 1...Rxd1
- 2.Qf3#
- 1...Rxd5
- 2.Qf5#
- 1...Bxb5
- 2.Sc3#
- 1...Bxe5
- 2.Rxe5#
- 2.Qxd3#
- 1...Sxf4
- 2.Sc3#
- 1...Rf7
- 2.Rd4#
- 1...Rf3
- 2.Qxf3#
- 1...Se1
- 2.Sc3#
- 1...Se3
- 2.Sc3#
- 1...d2
- 2.Sc3#
- 2.Qd3#
- threat
- 1.Se5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 4
- REMOVED MATES = 9
- Sets
- K(d);S_FLIGHT,XR(J)::S(A)
- R(a);SBLOCK,XS(D)::QAB1(E)
- R(g);SBLOCK,XR(J)::S(D)
- R(g);S_CUTB(h)::R1(J)
- R(g);N_GUARD::R1(J)
- B(h);N_GUARD::R1(J),XB(h)
- B(h);S_CUTR(g)::R1(J)
- B(h);N_GUARD::R1(J)
- S(b);SBLOCK::S(A)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- K(d);S_FLIGHT,XR(J)::QAB1(E)
- R(a);N_GUARD,XS(A)::QAB1(E)
- R(a);XP(G)::S(A)
- R(g);SBLOCK,XR(J)::QAB1(E),XP(c)
- S(b);::S(A)
- Refutation
- R(g);
- Try
- B(H);
- Threat
- DUALS(5)
- Vars
- R(a);XS(A)::B(H)+R(J),DCHECK
- R(g);P_SPINR(g),XR(J)::S(D)
- Refutation
- B(f);CHECK
- Try
- R(J);XP(c)
- Threat
- DUALS(3)
- Vars
- R(a);XS(A)::QAB1(E)
- R(g);N_GUARD::R1(J)
- Refutation
- R(g);XR(J)
- Try
- R(J);XR(g)
- Threat
- DUALS(3)
- Vars
- B(h);::B(H)
- Refutation
- R(a);XS(A)
- Try
- R(L);CHECK
- Vars
- K(d);P-FLIGHT,XP(G)::R1(J)
- R(g);P_SPINR(g)::R1(J)
- Refutation
- B(h);P_SPINB(h)
- Try
- Q(E);CHECK
- Vars
- B(h);P_SPINB(h)::S(D)
- Refutation
- K(d);S_FLIGHT,XS(D)
- Try
- Actual
- S(D);
- Threat
- DUALS(2)
- Vars
- K(d);OGATEB,S_FLIGHT,XR(J)::B(H)
- R(a);N_GUARD,XS(A)::QAB1(E)
- R(g);SBLOCK,XR(J)::QAB1(E)
- B(f);XB(H)::S(A)
- S(b);XP(G)::S(A)
- R(g);N_GUARD::R1(J)
- R(a);N_GUARD::QAB1(E),XR(a)
- S(b);::S(A)
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).