MESON Chess Problem Database
Problem Display
PID: 24926 (5n2/p1N5/K5P1/4p1N1/1Bpk1ppQ/n1RPp3/3PP3/8 w - - 0 1)
Schneider, Michael
1st Prize, Birgfeld MT, 1939
#2
10 + 9
| 3098 | FIDE Album (1914-1944) (I) | 1971 |
| 1099 | WCSC | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Sb1
- 2.Rxc4#
- 1...Sc2
- 2.Rxc4#
- 1...Sb5
- 2.Rxc4#
- 1...Se6
- 2.Sgxe6#
- 1...Sxg6
- 2.Sge6#
- 1...Sd7
- 2.Sge6#
- 1...Sh7
- 2.Sge6#
- 1...exd2
- 2.Qf2#
- 1...cxd3
- 2.Bc5#
- 1...f3
- 2.Sxf3#
- 1...g3
- 2.Sf3#
- 1...e4
- 2.Qh8#
- 1...Sb1
- Tries
- 1.Ka5?
- 1...Sxg6
- 2.Sge6#
- 1...exd2
- 2.Qf2#
- 1...cxd3
- 2.Bc5#
- 1...e4
- 2.Qh8#
- 1...Sb1
- 2.Rxc4#
- 1...Sc2
- 2.Rxc4#
- 1...Sb5
- 2.Rxc4#
- 1...Se6
- 2.Sgxe6#
- 1...Sd7
- 2.Sge6#
- 1...Sh7
- 2.Sge6#
- 1...f3
- 2.Sxf3#
- 1...g3
- 2.Sf3#
- 1...a6!
- 1...Sxg6
- 1.Kxa7?
- 1...Sxg6
- 2.Sge6#
- 1...exd2
- 2.Qf2#
- 1...cxd3
- 2.Bc5#
- 1...e4
- 2.Qh8#
- 1...Sb1
- 2.Rxc4#
- 1...Sc2
- 2.Rxc4#
- 1...Se6
- 2.Sgxe6#
- 1...Sd7
- 2.Sge6#
- 1...Sh7
- 2.Sge6#
- 1...f3
- 2.Sxf3#
- 1...g3
- 2.Sf3#
- 1...Sb5+!
- 1...Sxg6
- 1.Bxa3?
- threat
- 2.Rxc4#
- 1...cxd3
- 2.Bc5#
- 1...e4
- 2.Qh8#
- 1...exd2!
- threat
- 1.Bd6?
- 1...Sxg6
- 2.Sge6#
- 1...cxd3
- 2.Bc5#
- 1...Se6
- 2.Sgxe6#
- 1...Sb1
- 2.Rxc4#
- 1...Sc2
- 2.Rxc4#
- 1...Sb5
- 2.Rxc4#
- 1...Sd7
- 2.Sge6#
- 1...Sh7
- 2.Sge6#
- 1...f3
- 2.Sxf3#
- 1...g3
- 2.Sf3#
- 1...e4
- 2.Qh8#
- 1...exd2!
- 1...Sxg6
- 1.Be7?
- 1...Sxg6
- 2.Sge6#
- 1...cxd3
- 2.Bc5#
- 1...e4
- 2.Qh8#
- 1...Se6
- 2.Sgxe6#
- 1...Sb1
- 2.Rxc4#
- 1...Sc2
- 2.Rxc4#
- 1...Sb5
- 2.Rxc4#
- 1...Sd7
- 2.Sge6#
- 1...Sh7
- 2.Sge6#
- 1...f3
- 2.Sxf3#
- 1...g3
- 2.Sf3#
- 1...exd2!
- 1...Sxg6
- 1.Bxf8?
- threat
- 2.Sge6#
- 1...cxd3
- 2.Bc5#
- 1...e4
- 2.Qh8#
- 1...exd2!
- threat
- 1.Rc1?
- 1...Sxg6
- 2.Sge6#
- 1...exd2
- 2.Qf2#
- 1...cxd3
- 2.Bc5#
- 1...e4
- 2.Qh8#
- 1...Se6
- 2.Sgxe6#
- 1...Sb1
- 2.Rxc4#
- 1...Sb5
- 2.Rxc4#
- 1...Sd7
- 2.Sge6#
- 1...Sh7
- 2.Sge6#
- 1...c3
- 2.dxc3#
- 1...f3
- 2.Sxf3#
- 1...g3
- 2.Sf3#
- 1...Sc2!
- 1...Sxg6
- 1.Rc2?
- 1...Sxg6
- 2.Sge6#
- 1...exd2
- 2.Qf2#
- 1...cxd3
- 2.Bc5#
- 1...e4
- 2.Qh8#
- 1...Se6
- 2.Sgxe6#
- 1...Sb1
- 2.Rxc4#
- 1...Sb5
- 2.Rxc4#
- 1...Sd7
- 2.Sge6#
- 1...Sh7
- 2.Sge6#
- 1...c3
- 2.dxc3#
- 1...f3
- 2.Sxf3#
- 1...g3
- 2.Sf3#
- 1...Sxc2!
- 1...Sxg6
- 1.Rxa3?
- 1...Sxg6
- 2.Sge6#
- 1...exd2
- 2.Qf2#
- 1...e4
- 2.Qh8#
- 1...Se6
- 2.Sgxe6#
- 1...Sd7
- 2.Sge6#
- 1...Sh7
- 2.Sge6#
- 1...c3
- 2.dxc3#
- 1...f3
- 2.Sxf3#
- 1...g3
- 2.Sf3#
- 1...cxd3!
- 1...Sxg6
- 1.Qh1?
- threat
- 2.Qe4#
- 2.Qd5#
- 1...exd2
- 2.Qe4#
- 2.Qg1#
- 1...e4
- 2.Qxe4#
- 2.Qh8#
- 1...f3!
- threat
- 1.Qh2?
- 1...Sxg6
- 2.Sge6#
- 1...exd2
- 2.Qg1#
- 2.Qf2#
- 1...cxd3
- 2.Bc5#
- 1...e4
- 2.Qh8#
- 1...Se6
- 2.Sgxe6#
- 1...Sb1
- 2.Rxc4#
- 1...Sc2
- 2.Rxc4#
- 1...Sb5
- 2.Rxc4#
- 1...Sd7
- 2.Sge6#
- 1...Sh7
- 2.Sge6#
- 1...g3
- 2.Sf3#
- 1...f3!
- 1...Sxg6
- 1.Qxg4?
- threat
- 2.Sf3#
- 1...exd2
- 2.Qg1#
- 1...cxd3
- 2.Bc5#
- 1...e4!
- threat
- 1.dxe3+?
- 1...fxe3
- 2.Sf3#
- 1...Kxe3!
- 1...fxe3
- 1.g7?
- 1...exd2
- 2.Qf2#
- 1...cxd3
- 2.Bc5#
- 1...f3
- 2.Sxf3#
- 1...Sb1
- 2.Rxc4#
- 1...Sc2
- 2.Rxc4#
- 1...Sb5
- 2.Rxc4#
- 1...Se6
- 2.Sgxe6#
- 1...Sg6
- 2.Sge6#
- 1...Sd7
- 2.Sge6#
- 1...Sh7
- 2.Sge6#
- 1...g3
- 2.Sf3#
- 1...e4!
- 1...exd2
- 1.Ka5?
- Keys
- 1.dxc4!
- 1...Sxc4
- 2.Rd3#
- 1...Sxg6
- 2.Sce6#
- 1...exd2
- 2.Qf2#
- 1...e4
- 2.Qh8#
- 1...f3
- 2.dxe3#
- 1...Sb1
- 2.Sb5#
- 1...Sc2
- 2.Sb5#
- 1...Sb5
- 2.Sxb5#
- 1...Se6
- 2.Scxe6#
- 1...Sd7
- 2.Sce6#
- 1...Sh7
- 2.Sce6#
- 1...g3
- 2.dxe3#
- 1...Sxc4
- 1.dxc4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- S(a);N_GUARD::R1(C),XP(c)
- S(i);N_GUARD::S(G),XS(i)
- S(i);N_GUARD,XP(I)::S(G)
- S(i);N_GUARD::S(G)
- P(b);OGATEB,XP(A)::QAB(F)
- P(c);XP(D)::B(E)
- P(e);P_SPINP(f)::S(G),XP(e)
- P(f);N_GUARD,P_SPINP(e)::S(G)
- P(g);OGATEB::QAB(F)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- S(i);N_GUARD,XP(I)::S(G)
- P(b);OGATEB,XP(A)::QAB(F)
- P(c);XP(D)::B(E)
- P(g);OGATEB::QAB(F)
- S(a);N_GUARD::R1(C),XP(c)
- S(i);N_GUARD::S(G),XS(i)
- S(i);N_GUARD::S(G)
- P(e);P_SPINP(f)::S(G),XP(e)
- P(f);N_GUARD,P_SPINP(e)::S(G)
- Refutation
- P(h);
- Try
- K(H);P-FLIGHT,XP(h)
- Vars
- S(i);N_GUARD,XP(I)::S(G)
- P(b);OGATEB,XP(A)::QAB(F)
- P(c);XP(D)::B(E)
- P(g);OGATEB::QAB(F)
- S(a);N_GUARD::R1(C),XP(c)
- S(i);N_GUARD::S(G),XS(i)
- S(i);N_GUARD::S(G)
- P(e);P_SPINP(f)::S(G),XP(e)
- P(f);N_GUARD,P_SPINP(e)::S(G)
- Refutation
- S(a);CHECK
- Try
- B(E);XS(a)
- Threat
- R1(C),XP(c)
- Vars
- P(c);XP(D)::B(E)
- P(g);OGATEB::QAB(F)
- Refutation
- P(b);XP(A)
- Try
- B(E);
- Vars
- S(i);N_GUARD,XP(I)::S(G)
- P(c);XP(D)::B(E)
- S(i);N_GUARD::S(G),XS(i)
- S(a);N_GUARD::R1(C),XP(c)
- S(i);N_GUARD::S(G)
- P(e);P_SPINP(f)::S(G),XP(e)
- P(f);N_GUARD,P_SPINP(e)::S(G)
- P(g);OGATEB::QAB(F)
- Refutation
- P(b);XP(A)
- Try
- B(E);
- Vars
- S(i);N_GUARD,XP(I)::S(G)
- P(c);XP(D)::B(E)
- P(g);OGATEB::QAB(F)
- S(i);N_GUARD::S(G),XS(i)
- S(a);N_GUARD::R1(C),XP(c)
- S(i);N_GUARD::S(G)
- P(e);P_SPINP(f)::S(G),XP(e)
- P(f);N_GUARD,P_SPINP(e)::S(G)
- Refutation
- P(b);XP(A)
- Try
- B(E);XS(i)
- Threat
- S(G)
- Vars
- P(c);XP(D)::B(E)
- P(g);OGATEB::QAB(F)
- Refutation
- P(b);XP(A)
- Try
- R(C);
- Vars
- S(i);N_GUARD,XP(I)::S(G)
- P(b);OGATEB,XP(A)::QAB(F)
- P(c);XP(D)::B(E)
- P(g);OGATEB::QAB(F)
- S(i);N_GUARD::S(G),XS(i)
- S(a);N_GUARD::R1(C),XP(c)
- S(i);N_GUARD::S(G)
- P(c);OGATE::P(A),XP(c)
- P(e);P_SPINP(f)::S(G),XP(e)
- P(f);N_GUARD,P_SPINP(e)::S(G)
- Refutation
- S(a);
- Try
- R(C);
- Vars
- S(i);N_GUARD,XP(I)::S(G)
- P(b);OGATEB,XP(A)::QAB(F)
- P(c);XP(D)::B(E)
- P(g);OGATEB::QAB(F)
- S(i);N_GUARD::S(G),XS(i)
- S(a);N_GUARD::R1(C),XP(c)
- S(i);N_GUARD::S(G)
- P(c);OGATE::P(A),XP(c)
- P(e);P_SPINP(f)::S(G),XP(e)
- P(f);N_GUARD,P_SPINP(e)::S(G)
- Refutation
- S(a);XR(C)
- Try
- R(C);XS(a)
- Vars
- S(i);N_GUARD,XP(I)::S(G)
- P(b);OGATEB,XP(A)::QAB(F)
- P(g);OGATEB::QAB(F)
- S(i);N_GUARD::S(G),XS(i)
- S(i);N_GUARD::S(G)
- P(c);OGATE::P(A),XP(c)
- P(e);P_SPINP(f)::S(G),XP(e)
- P(f);N_GUARD,P_SPINP(e)::S(G)
- Refutation
- P(c);XP(D)
- Try
- Q(F);
- Threat
- DUALS(2)
- Refutation
- P(e);
- Try
- Q(F);
- Vars
- S(i);N_GUARD,XP(I)::S(G)
- P(c);XP(D)::B(E)
- P(g);OGATEB::QAB(F)
- S(i);N_GUARD::S(G),XS(i)
- S(a);N_GUARD::R1(C),XP(c)
- S(i);N_GUARD::S(G)
- P(f);N_GUARD::S(G)
- Refutation
- P(e);
- Try
- Q(F);P_PINP(e),XP(f)
- Threat
- S(G)
- Vars
- P(b);OGATEB,XP(A)::QAB(F)
- P(c);XP(D)::B(E)
- Refutation
- P(g);N_SPINP(e)
- Try
- P(A);CHECK,XP(b)
- Vars
- P(e);P_SPINP(f),SBLOCK,XP(A)::S(G)
- Refutation
- K(d);S_FLIGHT,XP(A)
- Try
- P(I);
- Vars
- P(b);OGATEB,XP(A)::QAB(F)
- P(c);XP(D)::B(E)
- P(e);P_SPINP(f)::S(G),XP(e)
- S(a);N_GUARD::R1(C),XP(c)
- S(i);N_GUARD::S(G),XS(i)
- S(i);N_GUARD::S(G)
- P(f);N_GUARD,P_SPINP(e)::S(G)
- Refutation
- P(g);
- Try
- Actual
- P(D);XP(c)
- Vars
- S(a);SBLOCK,XP(D)::R1(C)
- S(i);N_GUARD,XP(I)::S(J)
- P(b);OGATEB,XP(A)::QAB(F)
- P(g);OGATEB::QAB(F)
- P(e);N_GUARD,P_SPINP(f)::P(A),XP(b)
- S(a);N_GUARD::S(J)
- S(a);N_GUARD::S(J),XS(a)
- S(i);N_GUARD::S(J),XS(i)
- S(i);N_GUARD::S(J)
- P(f);P_SPINP(e)::P(A),XP(b)
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).