MESON Chess Problem Database
Problem Display
PID: 233951 (8/8/3np3/1PBkp1Q1/1KnP4/5P2/6B1/8 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Skakbladet, 1962
#2
7 + 5
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sb2
- 2.Qxe5#
- 1...Sd2
- 2.Qxe5#
- 1...Sa3
- 2.Qxe5#
- 1...Se3
- 2.Qxe5#
- 1...Sa5
- 2.Qxe5#
- 1...Sb6
- 2.Qxe5#
- 1...Se4
- 2.fxe4#
- 1...Sxb5
- 2.f4#
- 1...Sb7
- 2.f4#
- 1...Sf7
- 2.f4#
- 1...Sc8
- 2.f4#
- 1...Se8
- 2.f4#
- 1...Sb2
- Tries
- 1.Bf1?
- 1...Sb2
- 2.Qxe5#
- 1...Sd2
- 2.Qxe5#
- 1...Sa3
- 2.Qxe5#
- 1...Se3
- 2.Qxe5#
- 1...Sa5
- 2.Qxe5#
- 1...Sb6
- 2.Qxe5#
- 1...Se4
- 2.Bxc4#
- 1...Sf5
- 2.Bxc4#
- 1...Sb7
- 2.Bxc4#
- 1...Sf7
- 2.Bxc4#
- 1...Sc8
- 2.Bxc4#
- 1...Se8
- 2.Bxc4#
- 1...Sxb5!
- 1...Sb2
- 1.Bh1?
- 1...Sxb5
- 2.f4#
- 1...Sb2
- 2.Qxe5#
- 1...Sd2
- 2.Qxe5#
- 1...Sa3
- 2.Qxe5#
- 1...Se3
- 2.Qxe5#
- 1...Sa5
- 2.Qxe5#
- 1...Sb6
- 2.Qxe5#
- 1...Se4
- 2.fxe4#
- 1...Sb7
- 2.f4#
- 1...Sf7
- 2.f4#
- 1...Sc8
- 2.f4#
- 1...Se8
- 2.f4#
- 1...Sf5!
- 1...Sxb5
- 1.Bxd6?
- 1...Kxd6
- 2.Qd8#
- 1...Sxd6
- 2.Qxe5#
- 1...Sb2
- 2.Qxe5#
- 1...Sd2
- 2.Qxe5#
- 1...Sa3
- 2.Qxe5#
- 1...Se3
- 2.Qxe5#
- 1...Sa5
- 2.Qxe5#
- 1...Sb6
- 2.Qxe5#
- 1...Kxd4!
- 1...Kxd6
- 1.Qh5?
- 1...Sxb5
- 2.f4#
- 1...Sb2
- 2.Qxe5#
- 1...Sd2
- 2.Qxe5#
- 1...Sa3
- 2.Qxe5#
- 1...Se3
- 2.Qxe5#
- 1...Sa5
- 2.Qxe5#
- 1...Sb6
- 2.Qxe5#
- 1...Se4
- 2.fxe4#
- 1...Sb7
- 2.f4#
- 1...Sf7
- 2.f4#
- 1...Sc8
- 2.f4#
- 1...Se8
- 2.f4#
- 1...Sf5!
- 1...Sxb5
- 1.Bf1?
- Keys
- 1.Qd8!
- 1...exd4
- 2.f4#
- 1...Sb2
- 2.Qxd6#
- 1...Sd2
- 2.Qxd6#
- 1...Sa3
- 2.Qxd6#
- 1...Se3
- 2.Qxd6#
- 1...Sa5
- 2.Qxd6#
- 1...Sb6
- 2.Qxd6#
- 1...e4
- 2.fxe4#
- 1...exd4
- 1.Qd8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 6
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- S(a);N_GUARD::QAR1(G),XP(c)
- S(d);OGATE::P(B),XS(d)
- S(d);N_GUARD,XP(E)::B(A)+P(B)
- S(d);N_GUARD::B(A)+P(B)
- Tries
- Try
- B(A);
- Vars
- S(a);N_GUARD::QAR1(G),XP(c)
- S(d);N_GUARD::B(A),XS(a)
- S(d);N_GUARD,N_SPINP(c)::B(A),XS(a)
- Refutation
- S(d);XP(E)
- Try
- B(A);
- Vars
- S(d);N_GUARD,XP(E)::B(A)+P(B)
- S(a);N_GUARD::QAR1(G),XP(c)
- S(d);OGATE::P(B),XS(d)
- S(d);N_GUARD::B(A)+P(B)
- Refutation
- S(d);N_SPINP(c)
- Try
- B(F);XS(d)
- Vars
- K(b);N_SPINP(c),OGATEB,P-FLIGHT,XB(F)::QAR2(G)
- S(a);N_GUARD,XB(F)::QAR1(G),XP(c)
- S(a);N_GUARD::QAR1(G),XP(c)
- Refutation
- K(b);N_SPINP(c),P-FLIGHT,XP(D)
- Try
- Q(G);
- Vars
- S(d);N_GUARD,XP(E)::B(A)+P(B)
- S(a);N_GUARD::QAR1(G),XP(c)
- S(d);OGATE::P(B),XS(d)
- S(d);N_GUARD::B(A)+P(B)
- Refutation
- S(d);N_SPINP(c)
- Try
- Actual
- Q(G);N_PINP(c),P_PINS(d)
- Vars
- P(c);N_GUARD,XP(D)::B(A)+P(B)
- S(a);N_GUARD::QAR1(G),XS(d)
- P(c);OGATE::P(B),XP(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).