MESON Chess Problem Database
Problem Display
PID: 102352 (8/1nB3K1/1rp1RPR1/2P2k2/4p1p1/7n/B4P2/5Q2 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Schach-Aktiv, 1991
#2
9 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sxf2
- 2.Qxf2#
- 1...Sf4
- 2.Re5#
- 1...e3
- 2.Qd3#
- 1...g3
- 2.Qxh3#
- 1...Sxf2
- Tries
- 1.Qe2?
- threat
- 2.Qxg4#
- 2.Qxe4#
- 1...Sxf2
- 2.Qxf2#
- 1...Sxc5
- 2.Qxg4#
- 1...Sd6
- 2.Qxg4#
- 1...Rb4
- 2.Qxg4#
- 1...e3
- 2.Qd3#
- 2.Qxg4#
- 2.Qc2#
- 1...g3
- 2.Qg4#
- 2.Qxe4#
- 1...Sg5!
- threat
- 1.Qg2?
- threat
- 2.Qxe4#
- 2.Qxg4#
- 1...Sxf2
- 2.Qxf2#
- 1...Sxc5
- 2.Qxg4#
- 1...Sd6
- 2.Qxg4#
- 1...Rb4
- 2.Qxg4#
- 1...e3
- 2.Qe4#
- 2.Qxg4#
- 1...g3
- 2.Qxh3#
- 2.Qxe4#
- 1...Sg5!
- threat
- 1.Qxh3?
- threat
- 2.Qxg4#
- 2.Qh5#
- 1...Rb3
- 2.Qxg4#
- 1...Sd6
- 2.Qxg4#
- 1...gxh3!
- threat
- 1.Qc1?
- threat
- 2.Re5#
- 1...e3
- 2.Qc2#
- 1...Sd6!
- threat
- 1.f3?
- threat
- 2.fxe4#
- 2.fxg4#
- 1...exf3
- 2.Qd3#
- 1...gxf3
- 2.Qxh3#
- 1...Sg5
- 2.fxe4#
- 1...e3
- 2.Qd3#
- 2.fxg4#
- 1...g3
- 2.Qxh3#
- 2.fxe4#
- 1...Rb3!
- threat
- 1.f7?
- threat
- 2.Ref6#
- 2.f8Q#
- 2.f8R#
- 1...Sxf2
- 2.Ref6#
- 2.Qxf2#
- 2.f8Q#
- 2.f8R#
- 1...Sxc5
- 2.Ref6#
- 2.f8Q#
- 2.f8R#
- 1...Sg5
- 2.Ref6#
- 2.Rgf6#
- 1...Rb1
- 2.Ref6#
- 2.f8Q#
- 2.f8R#
- 1...Rb2
- 2.Ref6#
- 2.f8Q#
- 2.f8R#
- 1...Rb3
- 2.Ref6#
- 2.f8Q#
- 2.f8R#
- 1...Rb4
- 2.Ref6#
- 2.f8Q#
- 2.f8R#
- 1...Rb5
- 2.Ref6#
- 2.f8Q#
- 2.f8R#
- 1...Ra6
- 2.Ref6#
- 2.f8Q#
- 2.f8R#
- 1...Sg1
- 2.Ref6#
- 2.f8Q#
- 2.f8R#
- 1...Sf4
- 2.Re5#
- 2.Ref6#
- 2.f8Q#
- 2.f8R#
- 1...Sa5
- 2.Ref6#
- 2.f8Q#
- 2.f8R#
- 1...Sd8
- 2.Ref6#
- 1...e3
- 2.Qd3#
- 2.f8Q#
- 2.f8R#
- 1...g3
- 2.Ref6#
- 2.Qxh3#
- 2.f8Q#
- 2.f8R#
- 1...Sd6!
- threat
- 1.Qe2?
- Keys
- 1.f4!
- threat
- 2.Re5#
- 1...exf4 ep
- 2.Qd3#
- 1...gxf4 ep
- 2.Qxh3#
- 1...Sf2
- 2.Rg5#
- threat
- 1.f4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- S(a);OGATE,P_SPINS(a),XP(C)::QAR(A),XS(a)
- S(a);SBLOCK::R1(E)
- P(b);OGATEB::QAB(A)
- P(c);OGATEB::QAB(A),XS(a)
- Tries
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(a);OGATE,XP(C)::QAR(A),XS(a)
- S(g);XP(D)::QAB1(A),XP(c)
- S(g);::QAB1(A),XP(c)
- R(e);::QAB1(A),XP(c)
- Refutation
- S(a);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(a);OGATE,XP(C)::QAR(A),XS(a)
- S(g);XP(D)::QAB1(A),XP(c)
- S(g);::QAB1(A),XP(c)
- R(e);::QAB1(A),XP(c)
- Refutation
- S(a);
- Try
- Q(A);P_PINP(c),XS(a)
- Threat
- DUALS(2)
- Vars
- R(e);::QAB1(A),XP(c)
- S(g);::QAB1(A),XP(c)
- Refutation
- P(c);N_SPINP(c),XQ(A)
- Try
- Q(A);
- Threat
- R1(E)
- Vars
- P(b);OGATEB::QAB(A)
- Refutation
- S(g);
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- P(b);OGATEB,P_SPINP(b),XP(C)::QAB(A)
- P(c);OGATEB,P_SPINP(c),XP(C)::QAB(A),XS(a)
- S(a);::QAR(A)+P(C)DCHECK,XP(b)
- Refutation
- R(e);
- Try
- P(F);
- Threat
- DUALS(3)
- Vars
- S(g);::R1(E)
- Refutation
- S(g);
- Try
- Actual
- P(C);
- Threat
- R1(E)
- Vars
- P(b);EP,OGATEB,P_SPINP(b),XP(C)::QAB(A)
- P(c);EP,OGATEB,P_SPINP(c),XP(C)::QAB(A),XS(a)
- S(a);N_GUARD::R1(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).