MESON Chess Problem Database
Problem Display
PID: 36356 (3Rn3/8/4kP1N/K2pp2N/3R4/B7/2B3r1/1b1Q2n1 w - - 0 1)
Ahlheim, Karl-Heinz
1st HM., Die Schwalbe, 1975
#2
9 + 7
| 3771 | FIDE Album (1974-1976) | 1980 |
| 6490 | yacpdb | 2009 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Rxc2
- 2.Qg4#
- 1...Rd2
- 2.Qg4#
- 1...Rh2
- 2.Qg4#
- 1...Rg4
- 2.Qxg4#
- 1...Ba2
- 2.Bf5#
- 1...Sd6
- 2.Rxd6#
- 1...Sc7
- 2.Rd6#
- 1...Sg7
- 2.Rd6#
- 1...Rxc2
- Tries
- 1.Ra4?
- threat
- 2.Qxd5#
- 1...Rd2
- 2.Qg4#
- 1...Ba2
- 2.Bf5#
- 1...Sd6
- 2.Rxd6#
- 1...Sc7
- 2.Rd6#
- 1...d4
- 2.Bb3#
- 1...Sxf6!
- threat
- 1.Rb4?
- threat
- 2.Qxd5#
- 1...Sxf6
- 2.Rb6#
- 1...Rd2
- 2.Qg4#
- 1...Ba2
- 2.Bf5#
- 1...Sc7
- 2.Rb6#
- 1...d4
- 2.Bb3#
- 1...Sd6!
- threat
- 1.Rc4?
- threat
- 2.Qxd5#
- 1...Sxf6
- 2.Rc6#
- 1...dxc4
- 2.Rxe8#
- 2.Qd5#
- 2.Qd7#
- 1...Rd2
- 2.Qg4#
- 1...Sd6
- 2.Rxd6#
- 1...Sc7
- 2.Rc6#
- 2.Rd6#
- 1...d4!
- threat
- 1.Re4?
- threat
- 2.Qxd5#
- 1...Sxf6
- 2.Sf4#
- 1...dxe4
- 2.Bb3#
- 2.Rxe8#
- 2.Qd5#
- 2.Qd7#
- 1...Rd2
- 2.Qg4#
- 1...Sd6
- 2.Rxd6#
- 1...Sc7
- 2.Rd6#
- 1...d4
- 2.Bb3#
- 1...Ba2!
- threat
- 1.Rg4?
- threat
- 2.Qxd5#
- 1...Sxf6
- 2.Sg7#
- 1...Ba2
- 2.Bf5#
- 1...Sd6
- 2.Rxd6#
- 1...Sc7
- 2.Rd6#
- 1...d4
- 2.Bb3#
- 1...Rd2!
- threat
- 1.Rh4?
- threat
- 2.Qxd5#
- 1...Rd2
- 2.Qg4#
- 1...Ba2
- 2.Bf5#
- 1...Sd6
- 2.Rxd6#
- 1...Sc7
- 2.Rd6#
- 1...d4
- 2.Bb3#
- 1...Sxf6!
- threat
- 1.Qf3?
- threat
- 2.Qxd5#
- 2.Qf5#
- 1...Bxc2
- 2.Qxd5#
- 1...Sxf6
- 2.Qf5#
- 2.Qxf6#
- 1...e4
- 2.Qf5#
- 1...Rf2
- 2.Qxd5#
- 1...Rg5
- 2.Qxd5#
- 1...Ba2
- 2.Bf5#
- 2.Qf5#
- 1...Sd6
- 2.Rxd6#
- 2.Qxd5#
- 1...Sc7
- 2.Rd6#
- 2.Qf5#
- 1...Sg7
- 2.Rd6#
- 2.Qxd5#
- 1...Sxf3!
- threat
- 1.f7?
- threat
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...Rxc2
- 2.Qg4#
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...Bxc2
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...exd4
- 2.fxe8Q#
- 2.fxe8R#
- 1...e4
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rg7
- 2.f8S#
- 1...Rd2
- 2.Qg4#
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...Re2
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...Rf2
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rh2
- 2.Qg4#
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...Rg3
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...Rg4
- 2.Qxg4#
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...Rg5
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...Rg6
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...Rg8
- 2.fxg8Q#
- 2.fxg8B#
- 1...Ba2
- 2.Bf5#
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...Se2
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...Sf3
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...Sh3
- 2.fxe8Q#
- 2.fxe8R#
- 2.f8S#
- 1...Sf6
- 2.f8S#
- 1...Sc7
- 2.f8S#
- 1...Sg7
- 2.f8S#
- 1...Sd6!
- threat
- 1.Ra4?
- Keys
- 1.Rf4!
- threat
- 2.Qxd5#
- 1...Sxf6
- 2.Rxf6#
- 1...Rd2
- 2.Qg4#
- 1...Ba2
- 2.Bf5#
- 1...Sd6
- 2.Rxd6#
- 1...Sc7
- 2.Rd6#
- 1...d4
- 2.Bb3#
- threat
- 1.Rf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- R(c);N_GUARD,XB(B)::QAB(A)
- R(c);N_GUARD::QAB(A)
- R(c);N_GUARD::QAB(A),XR(c)
- B(a);N_GUARD::B(B)
- S(g);N_GUARD::R1(I),XS(g)
- S(g);N_GUARD::R1(I)
- Tries
- Try
- R(D);
- Threat
- QAB1(A),XP(d)
- Vars
- R(c);N_GUARD::QAB(A)
- B(a);N_GUARD::B(B)
- S(g);N_GUARD::R1(I),XS(g)
- S(g);N_GUARD::R1(I)
- P(d);OGATEB::B(B)
- Refutation
- S(g);XP(G)
- Try
- R(D);
- Threat
- QAB1(A),XP(d)
- Vars
- S(g);N_GUARD,XP(G)::R(D)
- R(c);N_GUARD::QAB(A)
- B(a);N_GUARD::B(B)
- S(g);N_GUARD::R(D)
- P(d);OGATEB::B(B)
- Refutation
- S(g);
- Try
- R(D);
- Threat
- QAB1(A),XP(d)
- Vars
- S(g);N_GUARD,XP(G)::R(D)
- R(c);N_GUARD::QAB(A)
- S(g);N_GUARD::R1(I),XS(g)
- Refutation
- P(d);
- Try
- R(D);P_PINP(e)
- Threat
- QAB1(A),XP(d)
- Vars
- S(g);SBLOCK,XP(G)::S(F)
- R(c);N_GUARD::QAB(A)
- S(g);N_GUARD::R1(I),XS(g)
- S(g);N_GUARD::R1(I)
- P(d);OGATEB::B(B)
- Refutation
- B(a);
- Try
- R(D);
- Threat
- QAB1(A),XP(d)
- Vars
- S(g);N_GUARD,SBLOCK,XP(G)::S(F)
- B(a);N_GUARD::B(B)
- S(g);N_GUARD::R1(I),XS(g)
- S(g);N_GUARD::R1(I)
- P(d);OGATEB::B(B)
- Refutation
- R(c);
- Try
- R(D);
- Threat
- QAB1(A),XP(d)
- Vars
- R(c);N_GUARD::QAB(A)
- B(a);N_GUARD::B(B)
- S(g);N_GUARD::R1(I),XS(g)
- S(g);N_GUARD::R1(I)
- P(d);OGATEB::B(B)
- Refutation
- S(g);XP(G)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(a);XB(B)::QAB1(A),XP(d)
- P(e);::QAB1(A)
- R(c);::QAB1(A),XP(d)
- Refutation
- S(b);XQ(A)
- Try
- P(G);
- Threat
- DUALS(3)
- Vars
- P(e);XR(D)::PXS(g)=Q
- P(e);::PXS(g)=Q
- R(c);::P=S
- R(c);::PXS(g)=Q
- R(c);OGATE::PXR(c)=Q
- S(g);::P=S
- Refutation
- S(g);
- Try
- Actual
- R(D);
- Threat
- QAB1(A),XP(d)
- Vars
- S(g);OGATE,XP(G)::R1(D),XS(g)
- R(c);N_GUARD::QAB(A)
- B(a);N_GUARD::B(B)
- S(g);N_GUARD::R1(I),XS(g)
- S(g);N_GUARD::R1(I)
- P(d);OGATEB::B(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).