MESON Chess Problem Database
Problem Display
PID: 52584 (3k4/N7/R2P1N2/8/4pK2/1qp5/8/6Q1 w - - 0 1)
Sonnenfeld, Felix Alexander
Xadrez Brasileiro, 1943
#2
6 + 4
| 5309 | O Mosqueteiro do Rei | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Qb6#
- 2.Qg8#
- 1...Qa2
- 2.Qb6#
- 1...Qc2
- 2.Qb6#
- 2.Qg8#
- 1...Qa4
- 2.Qb6#
- 1...Qd5
- 2.Qb6#
- 1...Qe6
- 2.Qb6#
- 1...Qg8
- 2.Qb6#
- 2.Qxg8#
- 1...Qb1
- 2.Qg8#
- 1...Qb2
- 2.Qg8#
- 1...Qa3
- 2.Qb6#
- 2.Qg8#
- 1...Qb4
- 2.Qg8#
- 1...Qb6
- 2.Qxb6#
- 2.Qg8#
- 1...Qb7
- 2.Qg8#
- 1...Qb8
- 2.Qg8#
- 1...Qd1
- Tries
- 1.Qg4?
- threat
- 2.Sc6#
- 2.Qd7#
- 2.Qc8#
- 1...Qc4
- 2.Qd7#
- 1...Qa4
- 2.Qc8#
- 1...Qd5
- 2.Qd7#
- 2.Qc8#
- 1...Qf7
- 2.Sc6#
- 2.Qc8#
- 1...Qb5
- 2.Qc8#
- 1...Qb6
- 2.Qd7#
- 2.Qc8#
- 2.Qg8#
- 1...Qb7
- 2.Qg8#
- 1...Qb8
- 2.Sc6#
- 2.Qd7#
- 2.Qg8#
- 1...Qe6!
- threat
- 1.Qg7?
- threat
- 2.Qf8#
- 2.Qc7#
- 2.Qd7#
- 2.Qe7#
- 1...Qc4
- 2.Qf8#
- 2.Qd7#
- 2.Qe7#
- 1...Qa4
- 2.Qc7#
- 2.Qe7#
- 1...Qe6
- 2.Qc7#
- 1...Qg8
- 2.Qc7#
- 2.Qd7#
- 2.Qe7#
- 2.Qxg8#
- 1...Qb5
- 2.Qc7#
- 2.Qe7#
- 1...Qb6
- 2.Qf8#
- 2.Qh8#
- 2.Qd7#
- 2.Qe7#
- 2.Qg8#
- 1...Qb7
- 2.Qf8#
- 2.Qh8#
- 2.Qg8#
- 1...Qb8
- 2.Qf8#
- 2.Qh8#
- 2.Qd7#
- 2.Qe7#
- 2.Qg8#
- 1...Qf7!
- threat
- 1.Qg4?
- Keys
- 1.Rc6!
- threat
- 2.Rc8#
- 1...Qc4
- 2.Qb6#
- 1...Qe6
- 2.Qb6#
- 1...Qb7
- 2.Qg8#
- 1...Qb8
- 2.Qg8#
- threat
- 1.Rc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- Q(a);N_GUARD::QAB(A)
- Q(a);N_GUARD::QAR(A)
- Q(a);N_GUARD,P_PINP(D)::QAR(A)
- Tries
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- Q(a);::QAR1(A)
- Q(a);N_GUARD::QAR(A)
- Refutation
- Q(a);
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- Q(a);::QAB1(A)
- Refutation
- Q(a);P_PINS(E)
- Try
- Actual
- R(C);
- Threat
- R1(C)
- Vars
- Q(a);N_GUARD::QAB(A)
- Q(a);N_GUARD::QAR(A)
- Q(a);N_GUARD,P_PINP(D)::QAR(A)
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).