MESON Chess Problem Database
Problem Display
PID: 200575 (4n3/2N4p/2p5/8/1R3p2/2k1n2Q/P1N1P3/2K3b1 w - - 0 1)
Starling, WL
The Problemist, 1983
#2
7 + 7
SOLUTION
- SOUND
- Sets
- 1...c5
- 2.Sb5#
- 2.Sd5#
- 1...c5
- Tries
- 1.Qe6?
- threat
- 2.Rb3#
- 2.Qb3#
- 2.Qe5#
- 1...Sxc2
- 2.Rc4#
- 2.Qb3#
- 2.Qc4#
- 1...Sd1
- 2.Rb3#
- 2.Rc4#
- 2.Qb3#
- 2.Qc4#
- 1...Sf1
- 2.Rb3#
- 2.Rc4#
- 2.Qb3#
- 2.Qc4#
- 1...Sg2
- 2.Rb3#
- 2.Rc4#
- 2.Qb3#
- 2.Qc4#
- 1...Sc4
- 2.Rb3#
- 2.Rxc4#
- 2.Qxc4#
- 1...Sg4
- 2.Rb3#
- 2.Rc4#
- 2.Qb3#
- 2.Qc4#
- 1...Sf5
- 2.Rb3#
- 2.Rc4#
- 2.Qb3#
- 2.Qc4#
- 1...Sd5!
- threat
- 1.Qd7?
- threat
- 2.Qd2#
- 2.Qd3#
- 2.Qd4#
- 1...Sxc2
- 2.Qd2#
- 1...Sd1
- 2.Qd2#
- 2.Qd3#
- 1...Sf1
- 2.Qd3#
- 1...Sg2
- 2.Qd2#
- 2.Qd3#
- 1...Sc4
- 2.Rb3#
- 2.Qd3#
- 1...Sg4
- 2.Qd2#
- 2.Qd3#
- 1...Sf5
- 2.Qd2#
- 2.Qd3#
- 1...Sd6
- 2.Qg7#
- 1...c5
- 2.Sb5#
- 2.Qd2#
- 2.Qd3#
- 1...Sd5!
- threat
- 1.Qe6?
- Keys
- 1.Qc8!
- threat
- 2.Sb5#
- 1...Sxc2
- 2.Sd5#
- 1...Sxc7
- 2.Qh8#
- 1...Sc4
- 2.Rb3#
- 1...Sd6
- 2.Qh8#
- threat
- 1.Qc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Tries
- Try
- Q(E);N_PINS(c)
- Threat
- DUALS(3)
- Refutation
- S(c);
- Try
- Q(E);N_PINS(c)
- Threat
- DUALS(3)
- Vars
- S(c);XS(C)::QAB1(E)
- S(c);::QAR1(E)
- S(g);N_GUARD::QAB(E)
- Refutation
- S(c);
- Try
- Actual
- Q(E);N_PINS(c)
- Threat
- S(G)
- Vars
- S(c);N_GUARD,XS(C)::S(G)
- S(g);OGATE,XS(G)::QAB(E)
- S(c);SBLOCK::R1(F)
- S(g);OGATE::QAB(E)
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).