MESON Chess Problem Database
Problem Display
PID: 57489 (8/2pQp3/N1q5/2pNp3/3pk3/6P1/3P4/3BK3 w - - 0 1)
Olland, AG
Tijdschrift vd NSB, 1895
#2
7 + 7
SOLUTION
- SOUND
- Sets
- 1...Qa4
- 2.Sxc5#
- 1...Qb7
- 2.Sxc5#
- 1...Qa8
- 2.Sxc5#
- 1...Qf6
- 2.Sxc5#
- 1...Qg6
- 2.Sxc5#
- 1...Qh6
- 2.Sxc5#
- 1...d3
- 2.Sc3#
- 1...Qa4
- Tries
- 1.Sxe7?
- threat
- 2.Qf5#
- 1...Qxd7
- 2.Sxc5#
- 1...Qe6
- 2.Sxc5#
- 1...Qf6
- 2.Sxc5#
- 1...Qg6
- 2.Sxc5#
- 1...d3
- 2.Qg4#
- 1...Kd3!
- threat
- 1.Qg4+?
- 1...Kd3
- 2.Qe2#
- 1...Kxd5!
- 1...Kd3
- 1.Sxe7?
- Keys
- 1.Se3!
- threat
- 2.Qf5#
- 1...Kd3
- 2.Bc2#
- 1...Qxd7
- 2.Sxc5#
- 1...dxe3
- 2.d3#
- 1...Qe6
- 2.Sxc5#
- 1...Qf6
- 2.Sxc5#
- 1...Qg6
- 2.Sxc5#
- 1...d3
- 2.Qg4#
- 1...e6
- 2.Qh7#
- threat
- 1.Se3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 4
- Sets
- Q(e);N_GUARD::S(F),XP(c)
- P(a);N_GUARD::S(E)
- Tries
- Try
- S(E);XP(g)
- Threat
- QAB1(G)
- Vars
- Q(e);N_GUARD,XQ(G)::S(F),XP(c)
- Q(e);N_GUARD::S(F),XP(c)
- P(a);SBLOCK::QAR2(G)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT
- Try
- Q(G);CHECK
- Vars
- K(b);S_FLIGHT::QAB1(G)
- Refutation
- K(b);S_FLIGHT,XS(E)
- Try
- Actual
- S(E);
- Threat
- QAB1(G)
- Vars
- K(b);P_SPINP(a),S_FLIGHT::B(A)
- Q(e);N_GUARD,XQ(G)::S(F),XP(c)
- P(a);SBLOCK,XS(E)::P(C)
- Q(e);N_GUARD::S(F),XP(c)
- P(a);SBLOCK::QAR2(G)
- P(g);OGATE::QAB(G)
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).