MESON Chess Problem Database
Problem Display
PID: 227827 (8/5K1N/8/4pk2/8/8/4Q1Nn/8 w - - 0 1)
Lazard, Frederic
Allgemeine Zeitung Chemnitz, 1926
#2
4 + 3
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sf1
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sg4
- 2.Qf3#
- 1...e4
- 2.Qh5#
- 1...Sf1
- Tries
- 1.Sf6?
- threat
- 2.Qh5#
- 1...Kg5
- 2.Qh5#
- 1...Sg4
- 2.Qxg4#
- 1...Sf3!
- threat
- 1.Qd1?
- 1...Sf3
- 2.Qxf3#
- 1...Sf1
- 2.Qf3#
- 1...Sg4
- 2.Qf3#
- 1...e4
- 2.Qh5#
- 1...Ke4!
- 1...Sf3
- 1.Qe3?
- 1...e4
- 2.Qf4#
- 2.Qg5#
- 1...Sf1
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sg4
- 2.Sh4#
- 2.Qf3#
- 1...Kg4!
- 1...e4
- 1.Sf6?
- Keys
- 1.Qc4!
- threat
- 2.Se3#
- 2.Sh4#
- 1...e4
- 2.Qe6#
- 1...Sf1
- 2.Sh4#
- 1...Sf3
- 2.Se3#
- 1...Sg4
- 2.Sh4#
- threat
- 1.Qc4!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAR2(A)
- S(a);N_GUARD::QAR2(A),XS(a)
- P(b);SBLOCK::QAR2(A)
- Tries
- Try
- S(D);
- Threat
- QAR2(A)
- Vars
- K(c);P-FLIGHT::QAR1(A)
- S(a);N_GUARD::QAB1(A),XS(a)
- Refutation
- S(a);
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAR2(A),XS(a)
- S(a);N_GUARD::QAR2(A)
- P(b);SBLOCK::QAR2(A)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAR2(A)
- S(a);N_GUARD::QAR2(A),XS(a)
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- Q(A);
- Threat
- DUALS(2)
- Vars
- P(b);::QAB1(A)
- S(a);::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).