MESON Chess Problem Database
Problem Display
PID: 108787 (8/8/5Q2/8/2n3N1/5P2/2N2n1K/3B1k2 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Thema Danicum, 1986
#2
6 + 3
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Se4
- 2.fxe4#
- 1...Sxg4+
- 2.fxg4#
- 1...Sb2
- 2.Sge3#
- 1...Sd2
- 2.Sge3#
- 1...Sa3
- 2.Sge3#
- 1...Se3
- 2.Sgxe3#
- 1...Sa5
- 2.Sge3#
- 1...Se5
- 2.Sge3#
- 1...Sb6
- 2.Sge3#
- 1...Sd6
- 2.Sge3#
- 1...Se4
- Tries
- 1.Qc3?
- threat
- 2.Qe1#
- 1...Sd3
- 2.Qxd3#
- 1...Sd2
- 2.Sge3#
- 1...Sxg4+!
- threat
- 1.Qd4?
- threat
- 2.Qxf2#
- 1...Sxd1
- 2.Qxd1#
- 2.Qd3#
- 2.Qxc4#
- 1...Sh1
- 2.Qg1#
- 2.Qd3#
- 2.Qxc4#
- 1...Sd3
- 2.Qg1#
- 2.Qxd3#
- 1...Sh3
- 2.Qd3#
- 2.Qxc4#
- 1...Se4
- 2.Qg1#
- 2.Qd3#
- 2.Qxc4#
- 1...Se3
- 2.Sgxe3#
- 1...Sxg4+!
- threat
- 1.Qh4?
- threat
- 2.Qxf2#
- 1...Sxd1
- 2.Qe1#
- 1...Sh1
- 2.Qe1#
- 2.Qh3#
- 1...Sd3
- 2.Qh3#
- 1...Sh3
- 2.Qe1#
- 2.Qxh3#
- 1...Se4
- 2.Qe1#
- 2.Qh3#
- 1...Sxg4+!
- threat
- 1.Qd8?
- 1...Sxd1
- 2.Qxd1#
- 2.Qd3#
- 1...Se4
- 2.Qd3#
- 1...Sh1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sh3
- 2.Qd3#
- 1...Sb2
- 2.Sge3#
- 1...Sd2
- 2.Sge3#
- 1...Sa3
- 2.Sge3#
- 1...Se3
- 2.Sgxe3#
- 1...Sa5
- 2.Sge3#
- 1...Se5
- 2.Sge3#
- 1...Sb6
- 2.Sge3#
- 1...Sd6
- 2.Sge3#
- 1...Sxg4+!
- 1...Sxd1
- 1.Qf4?
- 1...Sxg4+
- 2.fxg4#
- 1...Sxd1
- 2.Qxc4#
- 1...Se4
- 2.fxe4#
- 1...Sh1
- 2.Qxc4#
- 1...Sh3
- 2.Qxc4#
- 1...Sb2
- 2.Sge3#
- 1...Sd2
- 2.Sge3#
- 1...Sa3
- 2.Sge3#
- 1...Se3
- 2.Sgxe3#
- 1...Sa5
- 2.Sge3#
- 1...Se5
- 2.Sge3#
- 1...Sb6
- 2.Sge3#
- 1...Sd6
- 2.Sge3#
- 1...Sd3!
- 1...Sxg4+
- 1.Qd6?
- 1...Sxd1
- 2.Qxd1#
- 2.Qd3#
- 1...Sxd6
- 2.Sge3#
- 1...Sd3
- 2.Qxd3#
- 1...Sh1
- 2.Qd3#
- 1...Sh3
- 2.Qd3#
- 1...Se4
- 2.Qd3#
- 1...Sb2
- 2.Sge3#
- 1...Sd2
- 2.Sge3#
- 1...Sa3
- 2.Sge3#
- 1...Se3
- 2.Sgxe3#
- 1...Sa5
- 2.Sge3#
- 1...Se5
- 2.Sge3#
- 1...Sb6
- 2.Sge3#
- 1...Sxg4+!
- 1...Sxd1
- 1.Qe6?
- threat
- 2.Be2#
- 2.Qe1#
- 2.Qe2#
- 1...Sxd1
- 2.Qxc4#
- 2.Qe1#
- 1...Sd3
- 2.Be2#
- 2.Qe2#
- 1...Se4
- 2.Qxc4#
- 1...Se3
- 2.Sgxe3#
- 1...Se5
- 2.Sge3#
- 1...Sxg4+!
- threat
- 1.Qf7?
- 1...Sxg4+
- 2.fxg4#
- 1...Sxd1
- 2.Qxc4#
- 1...Se4
- 2.Qxc4#
- 2.fxe4#
- 1...Sh1
- 2.Qxc4#
- 1...Sh3
- 2.Qxc4#
- 1...Sb2
- 2.Sge3#
- 1...Sd2
- 2.Sge3#
- 1...Sa3
- 2.Sge3#
- 1...Se3
- 2.Sgxe3#
- 1...Sa5
- 2.Sge3#
- 1...Se5
- 2.Sge3#
- 1...Sb6
- 2.Sge3#
- 1...Sd6
- 2.Sge3#
- 1...Sd3!
- 1...Sxg4+
- 1.Qc3?
- Keys
- 1.Qf5!
- 1...Sxg4+
- 2.fxg4#
- 1...Sxd1
- 2.Qd3#
- 1...Se4
- 2.fxe4#
- 1...Sh1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sh3
- 2.Qd3#
- 1...Sb2
- 2.Sge3#
- 1...Sd2
- 2.Sge3#
- 1...Sa3
- 2.Sge3#
- 1...Se3
- 2.Sgxe3#
- 1...Sa5
- 2.Sge3#
- 1...Se5
- 2.Sge3#
- 1...Sb6
- 2.Sge3#
- 1...Sd6
- 2.Sge3#
- 1...Sxg4+
- 1.Qf5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- S(b);OGATE::QAR(F)+P(D),XS(b)
- S(b);CHECK,OGATE,XS(E)::QAR(F)+P(D),XS(b)
- S(c);N_GUARD::S(E)
- S(c);N_GUARD::S(E),XS(c)
- Tries
- Try
- Q(F);
- Threat
- QAR1(F)
- Vars
- S(b);N_GUARD::QAB(F),XS(b)
- S(c);N_GUARD::S(E)
- Refutation
- S(b);CHECK,XS(E)
- Try
- Q(F);
- Threat
- QAR1(F),XS(b)
- Vars
- S(c);N_GUARD::S(E),XS(c)
- Refutation
- S(b);CHECK,XS(E)
- Try
- Q(F);
- Threat
- QAR1(F),XS(b)
- Vars
- S(b);OGATE,XB(A)::QAR1(F)
- S(b);N_GUARD::QAB(F)
- Refutation
- S(b);CHECK,XS(E)
- Try
- Q(F);
- Vars
- S(b);N_GUARD::QAB(F)
- S(b);N_GUARD::QAB(F),XS(b)
- S(c);N_GUARD::S(E)
- S(c);N_GUARD::S(E),XS(c)
- Refutation
- S(b);CHECK,XS(E)
- Try
- Q(F);
- Vars
- S(b);CHECK,OGATE,XS(E)::QAR(F)+P(D),XS(b)
- S(b);N_GUARD,XB(A)::QAB(F),XS(c)
- S(b);OGATE::QAR(F)+P(D),XS(b)
- S(b);N_GUARD::QAB(F),XS(c)
- S(c);N_GUARD::S(E)
- S(c);N_GUARD::S(E),XS(c)
- Refutation
- S(b);
- Try
- Q(F);
- Vars
- S(c);N_GUARD,XQ(F)::S(E)
- S(b);N_GUARD::QAB(F),XS(b)
- S(b);N_GUARD::QAB(F)
- S(c);N_GUARD::S(E)
- S(c);N_GUARD::S(E),XS(c)
- Refutation
- S(b);CHECK,XS(E)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- S(b);N_GUARD::QAB(F),XS(c)
- S(c);N_GUARD::S(E),XS(c)
- S(c);N_GUARD::S(E)
- Refutation
- S(b);CHECK,XS(E)
- Try
- Q(F);
- Vars
- S(b);CHECK,OGATE,XS(E)::QAR(F)+P(D),XS(b)
- S(b);N_GUARD,XB(A)::QAB(F),XS(c)
- S(b);N_GUARD::QAB(F),XS(c)
- S(c);N_GUARD::S(E)
- S(c);N_GUARD::S(E),XS(c)
- Refutation
- S(b);
- Try
- Actual
- Q(F);
- Vars
- S(b);CHECK,OGATE,XS(E)::QAR(F)+P(D),XS(b)
- S(b);N_GUARD,XB(A)::QAB(F)
- S(b);OGATE::QAR(F)+P(D),XS(b)
- S(b);N_GUARD::QAB(F)
- S(b);N_GUARD::QAB(F),XS(b)
- S(c);N_GUARD::S(E)
- S(c);N_GUARD::S(E),XS(c)
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).