MESON Chess Problem Database
Problem Display
PID: 249615 (2R5/8/3R3q/6B1/1P4P1/P3P3/2NP4/K1kN3Q w - - 0 1)
Keres, Paul P
Deutsche Schachzeitung, 1938
#2
12 + 2
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxg5
- 2.Sb2#
- 2.Sf2#
- 1...Qg7+
- 2.Sb2#
- 1...Qf8
- 2.Sf2#
- 1...Qe6
- 2.Sb2#
- 2.Sf2#
- 1...Qg6
- 2.Sb2#
- 2.Sf2#
- 1...Qxg5
- Tries
- 1.Sc3+?
- 1...Kxc2
- 2.Qb1#
- 2.Qd1#
- 1...Qxh1!
- 1...Kxc2
- 1.Qe1?
- threat
- 2.Sb2#
- 2.Sf2#
- 2.Sd4#
- 1...Qg7+
- 2.Sb2#
- 1...Qf6+
- 2.Sb2#
- 2.Sd4#
- 1...Qh8+
- 2.Sb2#
- 1...Qxg5
- 2.Sb2#
- 2.Sf2#
- 1...Qxd6
- 2.Sb2#
- 2.Sf2#
- 1...Qf8
- 2.Sb2#
- 2.Sf2#
- 1...Qh4
- 2.Sf2#
- 2.Sd4#
- 1...Qe6
- 2.Sb2#
- 2.Sf2#
- 1...Qg6
- 2.Sb2#
- 2.Sf2#
- 1...Qh7
- 2.Sb2#
- 2.Sf2#
- 1...Qh1!
- threat
- 1.Sc3+?
- Keys
- 1.e4!
- threat
- 2.Sce3#
- 2.Sd4#
- 1...Qg7+
- 2.Sb2#
- 1...Qf6+
- 2.Sd4#
- 1...Qh8+
- 2.d4#
- 1...Qxg5
- 2.Sb2#
- 2.Sf2#
- 2.Sde3#
- 1...Qxh1
- 2.Sce3#
- 1...Qxd6
- 2.Sb2#
- 2.Sf2#
- 1...Qf8
- 2.Sf2#
- 1...Qh3
- 2.Sce3#
- 1...Qe6
- 2.Sb2#
- 2.Sf2#
- 2.Sde3#
- 2.d3#
- 2.d4#
- 1...Qh7
- 2.d3#
- 2.d4#
- threat
- 1.e4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Q(b);CHECK,N_GUARD::QAR(C)+S(B)
- Q(b);N_GUARD::QAR(C)+S(B)
- Tries
- Try
- S(B);CHECK
- Refutation
- Q(b);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- Q(b);CHECK::QAR(C)+S(B)
- Refutation
- Q(b);
- Try
- Actual
- P(G);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,N_GUARD::QAR(C)+S(B)
- Q(b);CHECK::R(L)+S(D)
- Q(b);CHECK,N_GUARD::B(J)+P(E)
- Q(b);XQ(C)::R(L)+S(D)
- Q(b);N_GUARD::QAR(C)+S(B)
- Q(b);::R(L)+S(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).