MESON Chess Problem Database
Problem Display
PID: 53712 (5BQ1/6p1/4K1p1/1N6/B1kq3R/3p4/2n5/8 w - - 0 1)
ten Cate, Pieter
Schach, 1950
#2
6 + 6
SOLUTION
- SOUND
- Sets
- 1...Qe4+
- 2.Kd7#
- 1...Qf4
- 2.Kd7#
- 1...Qg4+
- 2.Ke5#
- 1...Qxh4
- 2.Ke5#
- 2.Kd7#
- 1...Sa1
- 2.Rxd4#
- 1...Se1
- 2.Rxd4#
- 1...Sa3
- 2.Rxd4#
- 1...Se3
- 2.Rxd4#
- 1...Sb4
- 2.Rxd4#
- 1...g5
- 2.Kf5#
- 1...Qe4+
- Tries
- 1.Bd6?
- threat
- 2.Kd7#
- 2.Ke7#
- 2.Qc8#
- 1...Qe4+
- 2.Kd7#
- 1...Qg4+
- 2.Ke5#
- 2.Ke7#
- 1...Qxh4
- 2.Ke5#
- 2.Kd7#
- 2.Qc8#
- 1...Se3
- 2.Rxd4#
- 2.Qc8#
- 1...Sb4
- 2.Rxd4#
- 1...d2!
- threat
- 1.Be7?
- threat
- 2.Qc8#
- 1...Qe4+
- 2.Kd7#
- 1...Qg4+
- 2.Ke5#
- 1...Sb4
- 2.Rxd4#
- 1...d2!
- threat
- 1.Bd6?
- Keys
- 1.Qf7!
- threat
- 2.Qc7#
- 1...Qe4+
- 2.Kd7#
- 1...Qg4+
- 2.Ke5#
- 1...d2
- 2.Qf1#
- 1...Sb4
- 2.Rxd4#
- threat
- 1.Qf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- Q(d);CHECK::QAB(F)+K(D)
- Q(d);::QAB(F)+K(D)
- S(a);N_GUARD::R1(B),XQ(d)
- P(e);::QAB(F)+K(D)
- Tries
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- Q(d);CHECK::QAB(F)+K(D)
- S(a);N_GUARD::R1(B),XQ(d)
- Refutation
- P(b);
- Try
- B(E);
- Threat
- QAR(F)
- Vars
- Q(d);CHECK::QAB(F)+K(D)
- S(a);N_GUARD::R1(B),XQ(d)
- Refutation
- P(b);
- Try
- Actual
- Q(F);
- Threat
- QAR(F)
- Vars
- Q(d);CHECK::QAB(F)+K(D)
- P(b);OGATEB::QAB(F)
- S(a);N_GUARD::R1(B),XQ(d)
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).