MESON Chess Problem Database
Problem Display
PID: 251706 (B2q4/3R2B1/b1r2P2/1RPn2bQ/P1k1n3/1NP1PrP1/2P3PK/1N6 w - - 0 1)
Maleika, Gerhard
Die Schwalbe, 2021
#2
16 + 8
SOLUTION
- SOUND
- Sets
- 1...Qa5
- 2.Sxa5#
- 1...Qxf6
- 2.Sa5#
- 1...Qe7
- 2.Sa5#
- 1...Qxd7
- 2.Sa5#
- 1...Qxa8
- 2.Sa5#
- 1...Qb8
- 2.Sa5#
- 1...Qc8
- 2.Sa5#
- 1...Qe8
- 2.Sa5#
- 1...Qf8
- 2.Sa5#
- 1...Qg8
- 2.Sa5#
- 1...Qh8
- 2.Sa5#
- 1...Rf1
- 2.Qe2#
- 1...Rxg3
- 2.Qe2#
- 1...Rf4
- 2.Qe2#
- 1...Rf5
- 2.Qe2#
- 1...Rfxf6
- 2.Qe2#
- 1...Rb6
- 2.Sa5#
- 2.Bxd5#
- 1...Re6
- 2.Bxd5#
- 1...Rcxf6
- 2.Bxd5#
- 1...Rc7
- 2.Sa5#
- 2.Bxd5#
- 1...Rc8
- 2.Bxd5#
- 1...Bxe3
- 2.Qxd5#
- 1...Bf4
- 2.Qxd5#
- 1...Bh4
- 2.Qxd5#
- 1...Bxf6
- 2.Qxd5#
- 1...Bh6
- 2.Qxd5#
- 1...Sd2
- 2.S3xd2#
- 1...Sf2
- 2.S3d2#
- 1...Sexc3
- 2.S1d2#
- 2.Sa3#
- 2.S3d2#
- 1...Sxg3
- 2.S3d2#
- 1...Sxc5
- 2.S3d2#
- 1...Sd6
- 2.S3d2#
- 1...Sexf6
- 2.S3d2#
- 1...Sdxc3
- 2.Sa3#
- 1...Sxe3
- 2.Rb4#
- 1...Sb4
- 2.Rxb4#
- 1...Sf4
- 2.Rb4#
- 1...Sb6
- 2.Sa5#
- 2.Rb4#
- 1...Sdxf6
- 2.Rb4#
- 1...Sc7
- 2.Sa5#
- 2.Rb4#
- 1...Se7
- 2.Rb4#
- 1...Qa5
- Tries
- 1.Bxc6?
- threat
- 2.Bxd5#
- 1...Qxd7
- 2.Sa5#
- 1...Sexc3
- 2.S1d2#
- 2.Sa3#
- 2.S3d2#
- 1...Sexf6
- 2.S3d2#
- 1...Sdxc3
- 2.Sa3#
- 1...Sxe3
- 2.Rb4#
- 1...Sdxf6
- 2.Rb4#
- 1...Qa8
- 2.Sa5#
- 1...Qg8
- 2.Sa5#
- 1...Rf5
- 2.Qe2#
- 1...Sd6
- 2.S3d2#
- 1...Sb4
- 2.Rxb4#
- 1...Sf4
- 2.Rb4#
- 1...Sb6
- 2.Sa5#
- 2.Rb4#
- 1...Sc7
- 2.Sa5#
- 2.Rb4#
- 1...Se7
- 2.Rb4#
- 1...Bb7!
- threat
- 1.Qxf3?
- threat
- 2.Qe2#
- 2.Qxe4#
- 2.Qf1#
- 1...Qxf6
- 2.Sa5#
- 2.Qe2#
- 1...Rxf6
- 2.Bxd5#
- 2.Qe2#
- 2.Qxe4#
- 1...Bxe3
- 2.Qe2#
- 2.Qf1#
- 1...Bxf6
- 2.Qe2#
- 2.Qf1#
- 1...Sexc3
- 2.S1d2#
- 2.Sa3#
- 2.S3d2#
- 1...Sxg3
- 2.S3d2#
- 2.Qxd5#
- 1...Sxc5
- 2.S3d2#
- 2.Qxd5#
- 1...Sexf6
- 2.S3d2#
- 2.Qe2#
- 2.Qf1#
- 1...Sdxc3
- 2.Sa3#
- 1...Sxe3
- 2.Rb4#
- 2.Qe2#
- 2.Qxe4#
- 1...Sdxf6
- 2.Rb4#
- 2.Qe2#
- 2.Qf1#
- 1...Qe7
- 2.Sa5#
- 2.Qe2#
- 2.Qf1#
- 1...Qe8
- 2.Sa5#
- 2.Qe2#
- 2.Qf1#
- 1...Re6
- 2.Bxd5#
- 2.Qe2#
- 2.Qf1#
- 1...Sd2
- 2.S3xd2#
- 2.Qe2#
- 2.Qxd5#
- 1...Sf2
- 2.S3d2#
- 2.Qxd5#
- 1...Sd6
- 2.S3d2#
- 2.Qe2#
- 2.Qf1#
- 1...Sb4
- 2.Rxb4#
- 2.Qxe4#
- 1...Sf4
- 2.Rb4#
- 2.Qxe4#
- 1...Qh8+!
- threat
- 1.Qf7?
- threat
- 2.Rb4#
- 2.Qxd5#
- 1...Qxd7
- 2.Sa5#
- 2.Rb4#
- 1...Rxc5
- 2.Rb4#
- 1...Bxb5
- 2.Qxd5#
- 1...Sxc3
- 2.S1d2#
- 2.Sa3#
- 2.S3d2#
- 1...Sxf6
- 2.S3d2#
- 2.Rb4#
- 1...Qa5
- 2.Sxa5#
- 2.Qxd5#
- 1...Qb6
- 2.Qxd5#
- 1...Qb8
- 2.Sa5#
- 2.Qxd5#
- 1...Qg8
- 2.Sa5#
- 2.Rb4#
- 1...Rf5
- 2.Rb4#
- 1...Rb6
- 2.Sa5#
- 2.Bxd5#
- 2.Qxd5#
- 1...Rd6
- 2.Rb4#
- 1...Re6
- 2.Bxd5#
- 1...Sd6
- 2.S3d2#
- 2.Rb4#
- 1...Qh8+!
- threat
- 1.Bxc6?
- Keys
- 1.f7!
- threat
- 2.Sa3#
- 1...Qf6
- 2.Sa5#
- 1...Rff6
- 2.Qe2#
- 1...Rcf6
- 2.Bxd5#
- 1...Bf6
- 2.Qxd5#
- 1...Sef6
- 2.S3d2#
- 1...Sdf6
- 2.Rb4#
- threat
- 1.f7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 30
- Sets
- Q(h);N_GUARD::S(E),XQ(h)
- Q(h);N_GUARD,XP(M)::S(E)
- Q(h);N_GUARD::S(E)
- Q(h);N_GUARD,XR(N)::S(E)
- Q(h);N_GUARD,XB(P)::S(E)
- Q(h);N_GUARD,P_PINP(H)::S(E)
- Q(h);N_GUARD,P_PINQ(L)::S(E)
- R(a);OGATE::QAB(L)
- R(a);OGATE,XP(H)::QAB(L)
- R(a);OGATE,XP(M)::QAB(L)
- R(g);OGATE::B(P),XS(d)
- R(g);OGATE,XP(M)::B(P),XS(d)
- B(e);OGATE,XP(G)::QAB1(L),XS(d)
- B(e);OGATE,P_PINP(H)::QAB1(L),XS(d)
- B(e);OGATE::QAB1(L),XS(d)
- B(e);OGATE,XP(M)::QAB1(L),XS(d)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- S(c);N_GUARD,XP(H)::S(E)
- S(c);N_GUARD,XP(K)::S(E)
- S(c);N_GUARD,XP(M)::S(E)
- S(d);SBLOCK,XP(F)::S(A)
- S(d);N_GUARD,XP(G)::R1(J)
- S(d);N_GUARD::R1(J),XS(d)
- S(d);N_GUARD::R1(J)
- S(d);N_GUARD,XP(M)::R1(J)
- Tries
- Try
- B(P);XR(g)
- Threat
- B(P),XS(d)
- Vars
- Q(h);N_GUARD,XR(N)::S(E)
- S(c);N_GUARD,XP(M)::S(E)
- S(d);SBLOCK,XP(F)::S(A)
- S(d);N_GUARD,XP(G)::R1(J)
- S(d);N_GUARD,XP(M)::R1(J)
- Q(h);N_GUARD::S(E)
- R(a);OGATE::QAB(L)
- S(c);N_GUARD::S(E)
- S(d);N_GUARD::R1(J),XS(d)
- S(d);N_GUARD::R1(J)
- Refutation
- B(f);
- Try
- Q(L);XR(a)
- Threat
- DUALS(3)
- Vars
- S(d);SBLOCK,XP(F)::S(A)
- Refutation
- Q(h);CHECK
- Try
- Q(L);P_PINS(d)
- Threat
- DUALS(2)
- Vars
- R(g);XP(K)::R1(J)
- B(f);XR(J)::QAB1(L),XS(d)
- Q(h);::QAB1(L),XS(d)
- R(a);::R1(J)
- R(g);::R1(J)
- R(g);N_SPINS(d),OGATE::B(P),XS(d)
- Refutation
- Q(h);CHECK
- Try
- Actual
- P(M);
- Threat
- S(A)
- Vars
- Q(h);N_GUARD::S(E)
- R(a);OGATE::QAB(L)
- R(g);OGATE::B(P),XS(d)
- B(e);OGATE::QAB1(L),XS(d)
- S(c);N_GUARD::S(E)
- S(d);N_GUARD::R1(J)
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).