MESON Chess Problem Database
Problem Display
PID: 85946 (7r/P4P2/2p5/2K2b2/1N6/1R1N1Q2/2P1P1R1/k6r w - - 0 1)
Speckmann, Werner
Schweizerische Arbeiter Schach Journal, 1954
#2
10 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Ra3#
- 1...Rf1
- 2.Qxf1#
- 1...Rg1
- 2.Rxg1#
- 1...R1h2
- 2.Rg1#
- 2.Qf1#
- 1...R1h3
- 2.Rg1#
- 2.Qf1#
- 1...R1h4
- 2.Rg1#
- 2.Qf1#
- 1...R1h5
- 2.Rg1#
- 2.Qf1#
- 1...R1h6
- 2.Rg1#
- 2.Qf1#
- 1...R1h7
- 2.Rg1#
- 2.Qf1#
- 1...R8h2
- 2.a8Q#
- 2.a8R#
- 1...R8h3
- 2.a8Q#
- 2.a8R#
- 1...R8h4
- 2.a8Q#
- 2.a8R#
- 1...R8h5
- 2.a8Q#
- 2.a8R#
- 1...R8h6
- 2.a8Q#
- 2.a8R#
- 1...R8h7
- 2.a8Q#
- 2.a8R#
- 1...Bxd3
- 2.Qf6#
- 1...Bh3
- 2.Qf6#
- 1...Be4
- 2.Qf6#
- 1...Bg4
- 2.Qf6#
- 1...Be6
- 2.Qf6#
- 1...Bg6
- 2.Qf6#
- 1...Bd7
- 2.Qf6#
- 1...Bh7
- 2.Qf6#
- 1...Bc8
- 2.Qf6#
- 1...Rb1
- Tries
- 1.Sc1?
- threat
- 2.Qc3#
- 1...R8h3
- 2.a8Q#
- 2.a8R#
- 1...Bd3
- 2.Qf6#
- 1...R1h3!
- threat
- 1.Se1?
- threat
- 2.Qc3#
- 1...R8h3
- 2.a8Q#
- 2.a8R#
- 1...Bd3
- 2.Qf6#
- 1...R1h3!
- threat
- 1.Sf2?
- threat
- 2.Qc3#
- 1...R1h3
- 2.Rg1#
- 1...R8h3
- 2.a8Q#
- 2.a8R#
- 1...Bd3
- 2.Qf6#
- 1...Rb1!
- threat
- 1.Rg8?
- threat
- 2.a8Q#
- 2.a8R#
- 1...Bxd3
- 2.Qf6#
- 1...Rc1
- 2.a8Q#
- 2.a8R#
- 1...Rb1
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rd1
- 2.a8Q#
- 2.a8R#
- 1...Re1
- 2.a8Q#
- 2.a8R#
- 1...Rf1
- 2.Qxf1#
- 2.a8Q#
- 2.a8R#
- 1...Rg1
- 2.Rxg1#
- 2.a8Q#
- 2.a8R#
- 1...R1h2
- 2.Rg1#
- 2.Qf1#
- 2.a8Q#
- 2.a8R#
- 1...R1h3
- 2.Rg1#
- 2.Qf1#
- 2.a8Q#
- 2.a8R#
- 1...R1h4
- 2.Rg1#
- 2.Qf1#
- 2.a8Q#
- 2.a8R#
- 1...R1h5
- 2.Rg1#
- 2.Qf1#
- 2.a8Q#
- 2.a8R#
- 1...R1h6
- 2.Rg1#
- 2.Qf1#
- 2.a8Q#
- 2.a8R#
- 1...R1h7
- 2.Rg1#
- 2.Qf1#
- 2.a8Q#
- 2.a8R#
- 1...R8h2
- 2.a8Q#
- 2.a8R#
- 1...R8h3
- 2.a8Q#
- 2.a8R#
- 1...R8h4
- 2.a8Q#
- 2.a8R#
- 1...R8h5
- 2.a8Q#
- 2.a8R#
- 1...R8h6
- 2.a8Q#
- 2.a8R#
- 1...R8h7
- 2.a8Q#
- 2.a8R#
- 1...Bh3
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...Be4
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...Bg4
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...Be6
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...Bg6
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...Bd7
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...Bh7
- 2.Qxh1#
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...Bc8
- 2.Qf6#
- 1...Rxg8!
- threat
- 1.Qxc6?
- threat
- 2.Qa4#
- 2.Qa6#
- 2.Qf6#
- 1...Bxd3
- 2.Qa4#
- 2.Qf6#
- 1...Rb1
- 2.Ra3#
- 2.Qa4#
- 2.Qa6#
- 1...R1h4
- 2.Rg1#
- 2.Qa4#
- 2.Qa6#
- 1...R1h6
- 2.Rg1#
- 2.Qa4#
- 1...R8h4
- 2.Qa4#
- 2.Qa6#
- 2.a8Q#
- 2.a8R#
- 1...R8h6
- 2.Qa4#
- 2.a8Q#
- 2.a8R#
- 1...Rd8
- 2.Qa4#
- 2.Qa6#
- 1...Re8
- 2.Qa4#
- 2.Qa6#
- 1...Be6
- 2.Qa4#
- 2.Qa6#
- 1...Bd7
- 2.Qf6#
- 1...Bc8
- 2.Qa4#
- 2.Qf6#
- 1...Rc8!
- threat
- 1.Qf2?
- threat
- 2.Qd4#
- 1...Rb1
- 2.Ra3#
- 1...R1h4
- 2.Rg1#
- 2.Qe1#
- 2.Qg1#
- 2.Qf1#
- 1...R8h4
- 2.a8Q#
- 2.a8R#
- 1...Rd8!
- threat
- 1.Qe3?
- threat
- 2.Qd4#
- 2.Qe5#
- 1...Rb1
- 2.Ra3#
- 1...R1h4
- 2.Rg1#
- 2.Qc1#
- 2.Qg1#
- 1...R8h4
- 2.a8Q#
- 2.a8R#
- 1...Re8
- 2.Qd4#
- 1...Be4
- 2.Qd4#
- 1...Rd8!
- threat
- 1.Qf4?
- threat
- 2.Qe5#
- 2.Qd4#
- 1...Rb1
- 2.Ra3#
- 1...R1h4
- 2.Rg1#
- 2.Qc1#
- 2.Qf1#
- 1...R8h4
- 2.a8Q#
- 2.a8R#
- 1...Re8
- 2.Qd4#
- 1...Be4
- 2.Qe5#
- 2.Qf6#
- 1...Rd8!
- threat
- 1.f8Q?
- threat
- 2.Qg7#
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...Bxd3
- 2.Qg7#
- 2.Q3f6#
- 2.Q8f6#
- 1...Rc1
- 2.Qg7#
- 2.Qf6#
- 2.Qxh8#
- 2.a8Q#
- 2.a8R#
- 1...Rd1
- 2.Qg7#
- 2.Qf6#
- 2.Qxh8#
- 2.a8Q#
- 2.a8R#
- 1...Re1
- 2.Qg7#
- 2.Qf6#
- 2.Qxh8#
- 2.a8Q#
- 2.a8R#
- 1...Rf1
- 2.Qg7#
- 2.Qxf1#
- 2.Qf6#
- 2.Qxh8#
- 2.a8Q#
- 2.a8R#
- 1...Rg1
- 2.Rxg1#
- 2.Qg7#
- 2.Qf6#
- 2.Qxh8#
- 2.a8Q#
- 2.a8R#
- 1...R1h2
- 2.Rg1#
- 2.Qg7#
- 2.Qf1#
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...R1h3
- 2.Rg1#
- 2.Qg7#
- 2.Qf1#
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...R1h5
- 2.Rg1#
- 2.Qg7#
- 2.Qf1#
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...R1h7
- 2.Rg1#
- 2.Qf1#
- 2.Qf6#
- 1...R8h2
- 2.Qg7#
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...R8h3
- 2.Qg7#
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...R8h5
- 2.Qg7#
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...R8h7
- 2.Qf6#
- 1...Rg8
- 2.Qf6#
- 2.a8Q#
- 2.a8R#
- 1...Bh3
- 2.Qg7#
- 2.Q3f6#
- 2.Q8f6#
- 2.Qxh8#
- 2.a8Q#
- 2.a8R#
- 1...Be4
- 2.Qg7#
- 2.Q3f6#
- 2.Q8f6#
- 2.a8Q#
- 2.a8R#
- 1...Bg4
- 2.Qg7#
- 2.Q3f6#
- 2.Q8f6#
- 2.a8Q#
- 2.a8R#
- 1...Be6
- 2.Qg7#
- 2.Q3f6#
- 2.Q8f6#
- 2.a8Q#
- 2.a8R#
- 1...Bg6
- 2.Qg7#
- 2.Q3f6#
- 2.Q8f6#
- 2.a8Q#
- 2.a8R#
- 1...Bd7
- 2.Qg7#
- 2.Q3f6#
- 2.Q8f6#
- 2.a8Q#
- 2.a8R#
- 1...Bh7
- 2.Qg7#
- 2.Q3f6#
- 2.Q8f6#
- 2.Qxh8#
- 2.a8Q#
- 2.a8R#
- 1...Bc8
- 2.Qg7#
- 2.Q3f6#
- 2.Q8f6#
- 1...Rxf8!
- threat
- 1.Sc1?
- Keys
- 1.Qh5!
- 1...R1xh5
- 2.Rg1#
- 1...R8xh5
- 2.a8Q#
- 2.a8R#
- 1...Bxd3
- 2.Qe5#
- 1...Rc1
- 2.Qxh8#
- 1...Rb1
- 2.Ra3#
- 1...Rd1
- 2.Qxh8#
- 1...Re1
- 2.Qxh8#
- 1...Rf1
- 2.Qxh8#
- 1...Rg1
- 2.Rxg1#
- 2.Qxh8#
- 1...Rh2
- 2.Rg1#
- 1...Rh3
- 2.Rg1#
- 1...Rh4
- 2.Rg1#
- 1...Rh6
- 2.a8Q#
- 2.a8R#
- 1...Rh7
- 2.a8Q#
- 2.a8R#
- 1...Ra8
- 2.Qxh1#
- 1...Rb8
- 2.Qxh1#
- 1...Rc8
- 2.Qxh1#
- 1...Rd8
- 2.Qxh1#
- 1...Re8
- 2.Qxh1#
- 1...Rf8
- 2.Qxh1#
- 1...Rg8
- 2.Qxh1#
- 1...Bh3
- 2.Qe5#
- 2.Qxh8#
- 1...Be4
- 2.Qe5#
- 1...Bg4
- 2.Qe5#
- 1...Be6
- 2.Qe5#
- 1...Bg6
- 2.Qe5#
- 1...Bd7
- 2.Qe5#
- 1...Bh7
- 2.Qxh1#
- 2.Qe5#
- 1...Bc8
- 2.Qe5#
- 1...R1xh5
- 1.Qh5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 8
- ADDED MATES = 14
- REMOVED MATES = 3
- Sets
- R(b);SBLOCK::R(D)
- R(b);N_GUARD::QAR(F),XR(b)
- R(b);N_GUARD::R(C),XR(b)
- R(e);N_GUARD::P=Q
- B(c);OGATE,XS(E)::QAB(F)
- B(c);OGATE::QAB(F)
- Tries
- Try
- S(E);
- Threat
- QAB(F)
- Vars
- R(e);N_GUARD::P=Q
- B(c);OGATE::QAB(F)
- Refutation
- R(b);
- Try
- S(E);
- Threat
- QAB(F)
- Vars
- R(e);N_GUARD::P=Q
- B(c);OGATE::QAB(F)
- Refutation
- R(b);
- Try
- S(E);
- Threat
- QAB(F)
- Vars
- R(b);N_GUARD::R(C)
- R(e);N_GUARD::P=Q
- B(c);OGATE::QAB(F)
- Refutation
- R(b);
- Try
- R(C);
- Threat
- P=Q
- Vars
- B(c);OGATE,XS(E)::QAB(F)
- R(b);P_PINP(A)::P=Q
- R(b);::P=Q
- R(e);::P=Q
- B(c);OGATE::QAB(F)
- Refutation
- R(e);XR(C)
- Try
- Q(F);XP(d)
- Threat
- DUALS(3)
- Vars
- B(c);::QAB(F)
- Refutation
- R(e);P_PINQ(F)
- Try
- Q(F);
- Threat
- QAB(F)
- Vars
- R(b);SBLOCK::R(D)
- R(e);N_GUARD::P=Q
- Refutation
- R(e);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- R(b);SBLOCK::R(D)
- R(e);N_GUARD::P=Q
- R(e);::QAB(F)
- B(c);::QAB(F)
- Refutation
- R(e);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- R(b);SBLOCK::R(D)
- R(e);N_GUARD::P=Q
- R(e);::QAB(F)
- Refutation
- R(e);
- Try
- P(J);
- Threat
- DUALS(4)
- Vars
- R(e);::QAB(J)
- Refutation
- R(e);XQ(J)
- Try
- Actual
- Q(F);
- Vars
- R(b);N_GUARD,XQ(F)::R(C)
- R(e);N_GUARD,XQ(F)::P=Q
- B(c);OGATE,XS(E)::QAB(F)
- R(b);N_GUARD,P_PINP(A)::QAB(F),XR(e)
- R(b);SBLOCK::R(D)
- R(b);N_GUARD::QAB(F),XR(e)
- R(b);N_GUARD::R(C)
- R(e);N_GUARD::P=Q
- R(e);N_GUARD::QAB1(F),XR(b)
- B(c);OGATE::QAB(F)
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).