MESON Chess Problem Database
Problem Display
PID: 108789 (8/2B5/2n1N1p1/2N2kPn/6p1/8/3K1P1Q/8 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Thema Danicum, 1986
#2
7 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sf4
- 2.Qxf4#
- 1...Sf6
- 2.Qf4#
- 1...Sg7
- 2.Qf4#
- 1...Sb4
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sa7
- 2.Qe5#
- 1...Se7
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sd8
- 2.Qe5#
- 1...g3
- 2.Qh3#
- 1...Sf4
- Tries
- 1.Kc1?
- 1...g3
- 2.Qh3#
- 1...Sf4
- 2.Qxf4#
- 1...Sf6
- 2.Qf4#
- 1...Sg7
- 2.Qf4#
- 1...Sb4
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sa7
- 2.Qe5#
- 1...Se7
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sd8
- 2.Qe5#
- 1...Sg3!
- 1...g3
- 1.Kd1?
- 1...g3
- 2.Qh3#
- 1...Sf4
- 2.Qxf4#
- 1...Sf6
- 2.Qf4#
- 1...Sg7
- 2.Qf4#
- 1...Sb4
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sa7
- 2.Qe5#
- 1...Se7
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sd8
- 2.Qe5#
- 1...Sg3!
- 1...g3
- 1.Ke1?
- 1...g3
- 2.Qh3#
- 1...Sf4
- 2.Qxf4#
- 1...Sf6
- 2.Qf4#
- 1...Sg7
- 2.Qf4#
- 1...Sb4
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sa7
- 2.Qe5#
- 1...Se7
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sd8
- 2.Qe5#
- 1...Sg3!
- 1...g3
- 1.Kc3?
- 1...g3
- 2.Qh3#
- 1...Sf4
- 2.Qxf4#
- 1...Sf6
- 2.Qf4#
- 1...Sg7
- 2.Qf4#
- 1...Sb4
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sa7
- 2.Qe5#
- 1...Se7
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sd8
- 2.Qe5#
- 1...Sg3!
- 1...g3
- 1.Ke3?
- 1...g3
- 2.Qh3#
- 1...Sf4
- 2.Qxf4#
- 1...Sf6
- 2.Qf4#
- 1...Sg7
- 2.Qf4#
- 1...Sb4
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sa7
- 2.Qe5#
- 1...Se7
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sd8
- 2.Qe5#
- 1...Sg3!
- 1...g3
- 1.Sd4+?
- 1...Sxd4
- 2.Qe5#
- 1...Kxg5!
- 1...Sxd4
- 1.Sg7+?
- 1...Sxg7
- 2.Qf4#
- 1...Kxg5!
- 1...Sxg7
- 1.Bf4?
- 1...Sxf4
- 2.Qxf4#
- 1...g3
- 2.Qh3#
- 1...Sf6
- 2.Sg7#
- 1...Sg7
- 2.Sxg7#
- 1...Sb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sa5
- 2.Sd4#
- 1...Se5
- 2.Sd4#
- 1...Sa7
- 2.Sd4#
- 1...Se7
- 2.Sd4#
- 1...Sb8
- 2.Sd4#
- 1...Sd8
- 2.Sd4#
- 1...Sg3!
- 1...Sxf4
- 1.Bd6?
- 1...g3
- 2.Qh3#
- 1...Sf4
- 2.Qxf4#
- 1...Sf6
- 2.Qf4#
- 1...Sg7
- 2.Qf4#
- 1...Sb4
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sa7
- 2.Qe5#
- 1...Se7
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sd8
- 2.Qe5#
- 1...Sg3!
- 1...g3
- 1.Qg3?
- threat
- 2.Qd3#
- 1...Sf4
- 2.Qxf4#
- 1...Sf6
- 2.Qf4#
- 1...Sb4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sxg3!
- threat
- 1.Qd6?
- threat
- 2.Qd3#
- 1...Sg3
- 2.Qf4#
- 2.Qf8#
- 1...Sf4
- 2.Qxf4#
- 2.Qf8#
- 1...Sf6
- 2.Qf4#
- 1...Sb4
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 2.Qd5#
- 1...Se5
- 2.Qxe5#
- 1...g3!
- threat
- 1.Qh4?
- 1...Sg3
- 2.Sg7#
- 1...Sf4
- 2.Sg7#
- 1...Sf6
- 2.Sg7#
- 1...Sg7
- 2.Sxg7#
- 1...Sb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sa5
- 2.Sd4#
- 1...Sa7
- 2.Sd4#
- 1...Se7
- 2.Sd4#
- 1...Sb8
- 2.Sd4#
- 1...Sd8
- 2.Sd4#
- 1...g3
- 2.Qh3#
- 2.Qe4#
- 1...Se5!
- 1...Sg3
- 1.f3?
- 1...gxf3
- 2.Qh3#
- 1...Sf4
- 2.Qxf4#
- 1...Sf6
- 2.Qf4#
- 1...Sg7
- 2.Qf4#
- 1...Sb4
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sa7
- 2.Qe5#
- 1...Se7
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sd8
- 2.Qe5#
- 1...g3
- 2.Qh3#
- 1...Sg3!
- 1...gxf3
- 1.Kc1?
- Keys
- 1.f4!
- 1...Sxf4
- 2.Qxf4#
- 1...gxf4 ep
- 2.Qh3#
- 1...g3
- 2.Qh3#
- 1...Sg3
- 2.Sg7#
- 1...Sf6
- 2.Sg7#
- 1...Sg7
- 2.Sxg7#
- 1...Sb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sa5
- 2.Sd4#
- 1...Se5
- 2.Sd4#
- 1...Sa7
- 2.Sd4#
- 1...Se7
- 2.Sd4#
- 1...Sb8
- 2.Sd4#
- 1...Sd8
- 2.Sd4#
- 1...Sxf4
- 1.f4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 10
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(c);N_GUARD::QAR1(C),XS(c)
- S(c);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C),XS(d)
- P(a);OGATEB::QAB(C)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- P(a);OGATEB::QAB(C)
- S(c);N_GUARD::QAR1(C),XS(c)
- S(c);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C),XS(d)
- Refutation
- S(c);
- Try
- K(A);P-FLIGHT
- Vars
- P(a);OGATEB::QAB(C)
- S(c);N_GUARD::QAR1(C),XS(c)
- S(c);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C),XS(d)
- Refutation
- S(c);
- Try
- K(A);S_FLIGHT
- Vars
- P(a);OGATEB::QAB(C)
- S(c);N_GUARD::QAR1(C),XS(c)
- S(c);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C),XS(d)
- Refutation
- S(c);
- Try
- K(A);S_FLIGHT
- Vars
- P(a);OGATEB::QAB(C)
- S(c);N_GUARD::QAR1(C),XS(c)
- S(c);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C),XS(d)
- Refutation
- S(c);
- Try
- K(A);S_FLIGHT
- Vars
- P(a);OGATEB::QAB(C)
- S(c);N_GUARD::QAR1(C),XS(c)
- S(c);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C),XS(d)
- Refutation
- S(c);
- Try
- S(F);CHECK
- Vars
- S(d);XS(F)::QAR1(C)
- Refutation
- K(b);P-FLIGHT,XP(E)
- Try
- S(F);CHECK
- Vars
- S(c);XS(F)::QAR1(C)
- Refutation
- K(b);P-FLIGHT,XP(E)
- Try
- B(G);
- Vars
- S(c);OGATE,XB(G)::QAR1(C),XS(c)
- P(a);OGATEB::QAB(C)
- S(c);N_GUARD::S(F)
- S(c);N_GUARD::S(F),XS(c)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- Refutation
- S(c);
- Try
- B(G);
- Vars
- P(a);OGATEB::QAB(C)
- S(c);N_GUARD::QAR1(C),XS(c)
- S(c);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C),XS(d)
- Refutation
- S(c);
- Try
- Q(C);
- Threat
- QAB(C)
- Vars
- S(c);N_GUARD::QAR1(C),XS(c)
- S(c);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C),XS(d)
- Refutation
- S(c);XQ(C)
- Try
- Q(C);
- Threat
- QAB(C)
- Vars
- S(c);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C),XS(d)
- Refutation
- P(a);
- Try
- Q(C);
- Vars
- S(c);N_GUARD::S(F)
- S(c);N_GUARD::S(F),XS(c)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- Refutation
- S(d);
- Try
- P(B);
- Vars
- P(a);OGATEB,XP(B)::QAB(C)
- S(c);N_GUARD::QAR1(C),XS(c)
- S(c);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C),XS(d)
- P(a);OGATEB::QAB(C)
- Refutation
- S(c);
- Try
- Actual
- P(B);
- Vars
- S(c);OGATE,XP(B)::QAR1(C),XS(c)
- P(a);EP,OGATEB,XP(B)::QAB(C)
- P(a);OGATEB::QAB(C)
- S(c);N_GUARD::S(F)
- S(c);N_GUARD::S(F),XS(c)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(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).