MESON Chess Problem Database
Problem Display
PID: 92166 (N1n4q/1P3bPp/K2P3Q/5P2/1PkBP1R1/3R2p1/N3PP2/2r2r2 w - - 0 1)
Wirtanen, Erkki Aukusti
Schach-Echo, 1963
#2
15 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxg7
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rxf2
- 2.Qxc1#
- 1...Bh5
- 2.Qe6#
- 1...Be6
- 2.Qxe6#
- 1...Be8
- 2.Qe6#
- 1...Bg8
- 2.bxc8Q#
- 2.bxc8R#
- 1...Sb6
- 2.Sxb6#
- 1...Sxd6
- 2.Sb6#
- 1...Sa7
- 2.Sb6#
- 1...Se7
- 2.Sb6#
- 1...Qxg7
- Tries
- 1.Ba1?
- threat
- 2.e5#
- 1...Qxg7
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rxf2
- 2.Qxc1#
- 1...Sxd6
- 2.Sb6#
- 1...Bd5
- 2.exd5#
- 1...Bh5
- 2.Qe6#
- 1...Rc3!
- threat
- 1.Bb2?
- threat
- 2.e5#
- 1...Qxg7
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rxf2
- 2.Qxc1#
- 1...Sxd6
- 2.Sb6#
- 1...Bd5
- 2.exd5#
- 1...Bh5
- 2.Qe6#
- 1...Rc3!
- threat
- 1.Be3?
- threat
- 2.e5#
- 1...Qxg7
- 2.bxc8Q#
- 2.bxc8R#
- 1...Sxd6
- 2.Sb6#
- 1...Rc3
- 2.Rxc3#
- 1...Bd5
- 2.exd5#
- 1...Bh5
- 2.Qe6#
- 1...Rxf2!
- threat
- 1.Bc5?
- threat
- 2.e5#
- 1...Rxf2
- 2.Qxc1#
- 1...Sxd6
- 2.Sb6#
- 1...Rc3
- 2.Rxc3#
- 1...Bd5
- 2.exd5#
- 1...Bh5
- 2.Qe6#
- 1...Qxg7!
- threat
- 1.Bb6?
- threat
- 2.e5#
- 1...Qxg7
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rxf2
- 2.Qxc1#
- 1...Rc3
- 2.Rxc3#
- 1...Bd5
- 2.exd5#
- 1...Bh5
- 2.Qe6#
- 1...Sxd6!
- threat
- 1.Bf6?
- threat
- 2.e5#
- 1...Qxg7
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rxf2
- 2.Qxc1#
- 1...Sxd6
- 2.Sb6#
- 1...Rc3
- 2.Rxc3#
- 1...Bd5
- 2.exd5#
- 1...Bh5!
- threat
- 1.Rc3+?
- 1...Kxd4
- 2.Qf6#
- 2.gxh8Q#
- 2.gxh8B#
- 1...Rxc3!
- 1...Kxd4
- 1.gxh8Q?
- threat
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rxf2
- 2.Qxc1#
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Sxd6
- 2.Sb6#
- 1...gxf2
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rc3
- 2.Rxc3#
- 1...Ra1
- 2.Rc3#
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rb1
- 2.Rc3#
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rcd1
- 2.Rc3#
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rce1
- 2.Rc3#
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rc2
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rfd1
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rfe1
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rg1
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rh1
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Bh5
- 2.Qe6#
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Be6
- 2.Qxe6#
- 1...Bg6
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Be8
- 2.Qe6#
- 1...Bg8
- 2.Qxg8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Sb6
- 2.Sxb6#
- 1...Sa7
- 2.Sb6#
- 1...Se7
- 2.Sb6#
- 1...g2
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Bd5!
- threat
- 1.gxh8B?
- threat
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rxf2
- 2.Qxc1#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Sxd6
- 2.Sb6#
- 1...gxf2
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rc3
- 2.Rxc3#
- 1...Ra1
- 2.Rc3#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rb1
- 2.Rc3#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rcd1
- 2.Rc3#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rce1
- 2.Rc3#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rc2
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rfd1
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rfe1
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rg1
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rh1
- 2.bxc8Q#
- 2.bxc8R#
- 1...Bh5
- 2.Qe6#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Be6
- 2.Qxe6#
- 1...Bg6
- 2.bxc8Q#
- 2.bxc8R#
- 1...Be8
- 2.Qe6#
- 1...Bg8
- 2.bxc8Q#
- 2.bxc8R#
- 1...Sb6
- 2.Sxb6#
- 1...Sa7
- 2.Sb6#
- 1...Se7
- 2.Sb6#
- 1...g2
- 2.bxc8Q#
- 2.bxc8R#
- 1...Bd5!
- threat
- 1.Ba1?
- Keys
- 1.Ba7!
- threat
- 2.e5#
- 1...Qxg7
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rxf2
- 2.Qxc1#
- 1...Sxd6
- 2.Sb6#
- 1...Rc3
- 2.Rxc3#
- 1...Bd5
- 2.exd5#
- 1...Bh5
- 2.Qe6#
- threat
- 1.Ba7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- Q(h);N_GUARD,XP(N)::PXS(g)=Q
- R(b);N_GUARD,XP(C)::QAR(L),XR(a)
- B(e);N_GUARD::QAB(L)
- B(e);N_GUARD::QAB(L),XB(e)
- B(e);S_CUTQ(h)::PXS(g)=Q
- S(g);N_GUARD::S(O),XS(g)
- S(g);N_GUARD,XP(K)::S(O)
- S(g);N_GUARD::S(O)
- Tries
- Try
- B(F);
- Threat
- R(H)+P(G)
- Vars
- Q(h);N_GUARD,XP(N)::PXS(g)=Q
- R(b);N_GUARD,XP(C)::QAR(L),XR(a)
- S(g);N_GUARD,XP(K)::S(O)
- B(e);OGATE::R(H)+P(G),XB(e)
- B(e);N_GUARD::QAB(L)
- Refutation
- R(a);
- Try
- B(F);
- Threat
- R(H)+P(G)
- Vars
- Q(h);N_GUARD,XP(N)::PXS(g)=Q
- R(b);N_GUARD,XP(C)::QAR(L),XR(a)
- S(g);N_GUARD,XP(K)::S(O)
- B(e);OGATE::R(H)+P(G),XB(e)
- B(e);N_GUARD::QAB(L)
- Refutation
- R(a);
- Try
- B(F);
- Threat
- R(H)+P(G)
- Vars
- Q(h);N_GUARD,XP(N)::PXS(g)=Q
- S(g);N_GUARD,XP(K)::S(O)
- R(a);N_GUARD::R1(D),XR(a)
- B(e);OGATE::R(H)+P(G),XB(e)
- B(e);N_GUARD::QAB(L)
- Refutation
- R(b);XP(C)
- Try
- B(F);
- Threat
- R(H)+P(G)
- Vars
- R(b);N_GUARD,XP(C)::QAR(L),XR(a)
- S(g);N_GUARD,XP(K)::S(O)
- R(a);N_GUARD::R1(D),XR(a)
- B(e);OGATE::R(H)+P(G),XB(e)
- B(e);N_GUARD::QAB(L)
- Refutation
- Q(h);XP(N)
- Try
- B(F);
- Threat
- R(H)+P(G)
- Vars
- Q(h);N_GUARD,XP(N)::PXS(g)=Q
- R(b);N_GUARD,XP(C)::QAR(L),XR(a)
- R(a);N_GUARD::R1(D),XR(a)
- B(e);OGATE::R(H)+P(G),XB(e)
- B(e);N_GUARD::QAB(L)
- Refutation
- S(g);XP(K)
- Try
- B(F);
- Threat
- R(H)+P(G)
- Vars
- Q(h);N_GUARD,XP(N)::PXS(g)=Q
- R(b);N_GUARD,XP(C)::QAR(L),XR(a)
- S(g);N_GUARD,XP(K)::S(O)
- R(a);N_GUARD::R1(D),XR(a)
- B(e);OGATE::R(H)+P(G),XB(e)
- Refutation
- B(e);
- Try
- R(D);CHECK
- Refutation
- R(a);XR(D)
- Try
- P(N);XQ(h)
- Threat
- DUALS(3)
- Vars
- S(g);N_GUARD,XP(K)::S(O)
- R(a);N_GUARD::R1(D),XR(a)
- B(e);N_GUARD::QAB(L),XB(e)
- B(e);N_GUARD::QAB(L)
- S(g);N_GUARD::S(O),XS(g)
- S(g);N_GUARD::S(O)
- Refutation
- B(e);
- Try
- P(N);XQ(h)
- Threat
- PXS(g)=Q
- Vars
- S(g);N_GUARD,XP(K)::S(O)
- P(c);XP(C)::PXS(g)=Q
- R(a);N_GUARD::R1(D),XR(a)
- R(a);::PXS(g)=Q
- R(b);::PXS(g)=Q
- B(e);N_GUARD::QAB(L),XB(e)
- B(e);::PXS(g)=Q
- B(e);N_GUARD::QAB(L)
- S(g);N_GUARD::S(O),XS(g)
- S(g);N_GUARD::S(O)
- P(c);::PXS(g)=Q
- Refutation
- B(e);
- Try
- Actual
- B(F);
- Threat
- R(H)+P(G)
- Vars
- Q(h);N_GUARD,XP(N)::PXS(g)=Q
- R(b);N_GUARD,XP(C)::QAR(L),XR(a)
- S(g);N_GUARD,XP(K)::S(O)
- R(a);N_GUARD::R1(D),XR(a)
- B(e);OGATE::R(H)+P(G),XB(e)
- B(e);N_GUARD::QAB(L)
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).