MESON Chess Problem Database
Problem Display
PID: 31468 (kB5R/pp1NK1p1/8/4Q3/8/8/4n3/4r2r w - - 0 1)
Voellmy, Erwin
Basel Solving Ty., 1913
#2
5 + 7
| 56 | The Problemist | 1927 |
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Bd6#
- 2.Bc7#
- 1...a5
- 2.Sb6#
- 2.Qxa5#
- 1...a6
- 2.Sb6#
- 1...b5
- 2.Qe4#
- 2.Qd5#
- 1...b6
- 2.Qe4#
- 2.Qd5#
- 1...Rg1
- Tries
- 1.Bxa7+?
- 1...Kxa7
- 2.Qa5#
- 1...Rxh8!
- 1...Kxa7
- 1.Rc8?
- threat
- 2.Bd6#
- 2.Bc7#
- 1...b5
- 2.Qe4#
- 2.Qd5#
- 1...b6
- 2.Qe4#
- 2.Qd5#
- 1...Rc1
- 2.Bc7#
- 1...a5
- 2.Sb6#
- 2.Qxa5#
- 1...a6
- 2.Sb6#
- 1...Rh8!
- threat
- 1.Rd8?
- threat
- 2.Bd6#
- 2.Bc7#
- 1...b5
- 2.Qe4#
- 2.Qd5#
- 1...b6
- 2.Qe4#
- 2.Qd5#
- 1...Rc1
- 2.Bc7#
- 1...a5
- 2.Sb6#
- 2.Qxa5#
- 1...a6
- 2.Sb6#
- 1...Rh8!
- threat
- 1.Re8?
- threat
- 2.Bd6#
- 2.Bc7#
- 1...b5
- 2.Qe4#
- 2.Qd5#
- 1...b6
- 2.Qe4#
- 2.Qd5#
- 1...Rc1
- 2.Bc7#
- 1...a5
- 2.Sb6#
- 2.Qxa5#
- 1...a6
- 2.Sb6#
- 1...Rh8!
- threat
- 1.Qh5?
- threat
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bd6#
- 2.Bc7#
- 1...Sc1+
- 2.Be5#
- 1...Sg1+
- 2.Be5#
- 1...Sc3+
- 2.Be5#
- 1...Sg3+
- 2.Be5#
- 1...Sd4+
- 2.Be5#
- 1...Sf4+
- 2.Be5#
- 1...b5
- 2.Qf3#
- 2.Qd5#
- 1...b6
- 2.Qf3#
- 2.Qd5#
- 1...Rc1
- 2.Bc7#
- 1...Ref1
- 2.Bf4#
- 1...Rhf1
- 2.Bf4#
- 1...Rh2
- 2.Bxh2#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bd6#
- 2.Bc7#
- 1...a5
- 2.Sb6#
- 2.Qxa5#
- 1...a6
- 2.Sb6#
- 1...Rxh5!
- threat
- 1.Bxa7+?
- Keys
- 1.Qh2!
- threat
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bd6#
- 2.Bc7#
- 1...Sc1+
- 2.Be5#
- 1...Sg1+
- 2.Be5#
- 1...Sc3+
- 2.Be5#
- 1...Sg3+
- 2.Be5#
- 1...Sd4+
- 2.Be5#
- 1...Sf4+
- 2.Be5#
- 1...Rxh2
- 2.Bxh2#
- 1...b5
- 2.Qg2#
- 1...b6
- 2.Qg2#
- 1...Rc1
- 2.Bc7#
- 1...Ref1
- 2.Bf4#
- 1...Rhf1
- 2.Bf4#
- 1...a5
- 2.Sb6#
- 1...a6
- 2.Sb6#
- threat
- 1.Qh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 13
- REMOVED MATES = 0
- Sets
- P(d);N_GUARD::S(B)
- Tries
- Try
- B(D);CHECK,XP(d)
- Vars
- K(g);P-FLIGHT,XB(D)::QAR2(A)
- Refutation
- R(b);XR(E)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- R(a);::R(E)+B(D)
- P(d);N_GUARD::S(B)
- Refutation
- R(b);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- R(a);::R(E)+B(D)
- P(d);N_GUARD::S(B)
- Refutation
- R(b);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- R(a);::R(E)+B(D)
- P(d);N_GUARD::S(B)
- Refutation
- R(b);
- Try
- Q(A);
- Threat
- DUALS(6)
- Vars
- S(c);CHECK::R(E)+B(D)
- R(a);::R(E)+B(D)
- R(b);::R(E)+B(D)
- P(d);N_GUARD::S(B)
- Refutation
- R(b);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- DUALS(5)
- Vars
- S(c);CHECK::R(E)+B(D)
- R(b);OGATE,XQ(A)::R(E)+B(D),XR(b)
- P(e);OGATEB::QAB(A)
- R(a);::R(E)+B(D)
- R(b);::R(E)+B(D)
- P(d);N_GUARD::S(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).