MESON Chess Problem Database
Problem Display
PID: 167325 (8/3p3q/1Np4b/K1k1B2Q/1p6/8/B1b5/8 w - - 0 1)
Groeneveld, Cornelis
Der Tagesspiegel (Berlin), 1997
#2
5 + 7
| 15148 | Sadier Collection | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Sxd7#
- 1...Qg6
- 2.Sxd7#
- 1...Qg8
- 2.Sxd7#
- 1...Qh8
- 2.Sxd7#
- 1...Bb1
- 2.Sa4#
- 1...Bd3
- 2.Sa4#
- 1...Ba4
- 2.Sxa4#
- 1...Be4
- 2.Sa4#
- 1...Bf5
- 2.Sa4#
- 1...Bg6
- 2.Sa4#
- 1...Bg7
- 2.Sxd7#
- 1...Qe4
- Tries
- 1.Bd4+?
- 1...Kd6
- 2.Qe5#
- 1...Kxd4!
- 1...Kd6
- 1.Qg4?
- threat
- 2.Qxb4#
- 2.Qc4#
- 2.Qd4#
- 1...Qd3
- 2.Qxb4#
- 1...Qe4
- 2.Sxd7#
- 1...Qg8
- 2.Sxd7#
- 2.Qxb4#
- 2.Qd4#
- 1...Qf7
- 2.Qxb4#
- 2.Qd4#
- 1...Bb3
- 2.Qxb4#
- 2.Qd4#
- 1...Bd3
- 2.Sa4#
- 2.Qxb4#
- 2.Qd4#
- 1...Be4
- 2.Sa4#
- 1...Bd2
- 2.Qc4#
- 2.Qd4#
- 1...Be3
- 2.Qxb4#
- 2.Qc4#
- 1...b3
- 2.Qb4#
- 2.Qc4#
- 2.Qd4#
- 1...d5
- 2.Qxb4#
- 2.Qd4#
- 1...Bf4!
- threat
- 1.Qh4?
- threat
- 2.Qxb4#
- 2.Qc4#
- 2.Qd4#
- 1...Qd3
- 2.Qxb4#
- 1...Qe4
- 2.Sxd7#
- 1...Qg8
- 2.Sxd7#
- 2.Qxb4#
- 2.Qd4#
- 1...Qf7
- 2.Qxb4#
- 2.Qd4#
- 1...Bb3
- 2.Qxb4#
- 2.Qd4#
- 1...Bd3
- 2.Sa4#
- 2.Qxb4#
- 2.Qd4#
- 1...Be4
- 2.Sa4#
- 1...Bd2
- 2.Qc4#
- 2.Qd4#
- 1...Be3
- 2.Qxb4#
- 2.Qc4#
- 1...b3
- 2.Qb4#
- 2.Qc4#
- 2.Qd4#
- 1...d5
- 2.Qxb4#
- 2.Qd4#
- 1...Bf4!
- threat
- 1.Qxh6?
- threat
- 2.Qe3#
- 2.Qd6#
- 1...Qxh6
- 2.Sxd7#
- 1...Qe4
- 2.Sxd7#
- 2.Qd6#
- 1...Qg6
- 2.Sxd7#
- 2.Qe3#
- 1...Qe7
- 2.Qe3#
- 1...Bg6
- 2.Sa4#
- 2.Qe3#
- 1...d5
- 2.Qd6#
- 1...d6
- 2.Qe3#
- 2.Qxd6#
- 1...Qd3!
- threat
- 1.Bd4+?
- Keys
- 1.Qg6!
- threat
- 2.Qd6#
- 1...Qxg6
- 2.Sxd7#
- 1...Bxg6
- 2.Sa4#
- 1...Qe7
- 2.Qxc2#
- 1...Bf8
- 2.Qg1#
- 1...d6
- 2.Qxd6#
- threat
- 1.Qg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- Q(g);N_GUARD::S(E),XP(f)
- B(a);N_GUARD::S(E)
- B(a);N_GUARD::S(E),XB(a)
- B(e);S_CUTQ(g)::S(E),XP(f)
- Tries
- Try
- B(C);CHECK
- Vars
- K(c);S_FLIGHT::QAB1(D)
- Refutation
- K(c);S_FLIGHT,XB(C)
- Try
- Q(D);
- Threat
- DUALS(3)
- Vars
- Q(g);::QAB1(D),XP(b)
- Q(g);N_GUARD::S(E),XP(f)
- B(a);N_GUARD::S(E)
- Refutation
- B(e);
- Try
- Q(D);
- Threat
- DUALS(3)
- Vars
- Q(g);::QAB1(D),XP(b)
- Q(g);N_GUARD::S(E),XP(f)
- B(a);N_GUARD::S(E)
- Refutation
- B(e);
- Try
- Q(D);XB(e)
- Threat
- DUALS(2)
- Vars
- Q(g);N_GUARD,XQ(D)::S(E),XP(f)
- Q(g);::QAB(D)
- P(f);::QAB1(D)
- Refutation
- Q(g);
- Try
- Actual
- Q(D);
- Threat
- QAB1(D)
- Vars
- Q(g);N_GUARD,XQ(D)::S(E),XP(f)
- B(a);N_GUARD,XQ(D)::S(E)
- Q(g);N_GUARD::QAR(D),XB(a)
- B(e);N_GUARD::QAB(D)
- P(f);::QAB1(D),XP(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).