MESON Chess Problem Database
Problem Display
PID: 11987 (3R4/p1K1pp2/3N1P2/3k4/1PnPnPB1/3P4/1b1R1Q2/4rb2 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
The Problemist, 1973
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.dxe4#
- 1...Rb1
- 2.dxe4#
- 1...Rc1
- 2.dxe4#
- 1...Rd1
- 2.dxe4#
- 1...Re2
- 2.dxc4#
- 1...Be2
- 2.dxe4#
- 1...Bg2
- 2.dxc4#
- 1...Bh3
- 2.dxc4#
- 1...Scxd2
- 2.Sxe4#
- 1...Sa3
- 2.Sxe4#
- 1...Se3
- 2.Sxe4#
- 2.dxe4#
- 1...Sa5
- 2.Sxe4#
- 1...Sexd2
- 2.Sxc4#
- 1...Sxf2
- 2.Sxc4#
- 1...Sc3
- 2.Sxc4#
- 1...Sg3
- 2.Sxc4#
- 1...Sg5
- 2.Sxc4#
- 1...Ra1
- Tries
- 1.Sc8+?
- 1...Scd6
- 2.Sxe7#
- 1...Sed6!
- 1...Scd6
- 1.Re2?
- threat
- 2.dxc4#
- 2.dxe4#
- 1...Rxe2
- 2.dxc4#
- 1...Bxe2
- 2.dxe4#
- 1...Sxf2
- 2.Sxc4#
- 1...Sexd6
- 2.Bf3#
- 1...Sxf6
- 2.dxc4#
- 1...exd6
- 2.dxe4#
- 1...Se3
- 2.Sxe4#
- 1...Rc1
- 2.dxe4#
- 1...Bg2
- 2.dxc4#
- 1...Scd2
- 2.Sxe4#
- 1...Sa3
- 2.Sxe4#
- 2.dxe4#
- 1...Sa5
- 2.Sxe4#
- 2.dxe4#
- 1...Se5
- 2.dxe4#
- 1...Sb6
- 2.dxe4#
- 1...Sed2
- 2.Sxc4#
- 1...Sc3
- 2.Sxc4#
- 2.dxc4#
- 1...Sg3
- 2.Sxc4#
- 2.dxc4#
- 1...Sc5
- 2.dxc4#
- 1...Sg5
- 2.Sxc4#
- 2.dxc4#
- 1...Scxd6!
- threat
- 1.Sc8+?
- Keys
- 1.Qe2!
- threat
- 2.dxc4#
- 2.dxe4#
- 1...Kxd4
- 2.Sb5#
- 1...Rxe2
- 2.dxc4#
- 1...Bxe2
- 2.dxe4#
- 1...Scxd2
- 2.Sxe4#
- 1...Scxd6
- 2.dxe4#
- 1...Sexd2
- 2.Sxc4#
- 1...Sexd6
- 2.dxc4#
- 1...Sxf6
- 2.dxc4#
- 1...Rc1
- 2.Qxe4#
- 2.dxe4#
- 1...Bg2
- 2.dxc4#
- 1...Sa3
- 2.Sxe4#
- 2.dxe4#
- 1...Se3
- 2.Sxe4#
- 2.dxe4#
- 1...Sa5
- 2.Sxe4#
- 2.dxe4#
- 1...Se5
- 2.dxe4#
- 1...Sb6
- 2.dxe4#
- 1...Sf2
- 2.Sxc4#
- 2.dxc4#
- 1...Sc3
- 2.Sxc4#
- 2.dxc4#
- 1...Sg3
- 2.Sxc4#
- 2.dxc4#
- 1...Sc5
- 2.dxc4#
- 1...Sg5
- 2.Sxc4#
- 2.dxc4#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 11
- Sets
- R(a);N_GUARD::P(C),XS(e)
- R(a);S_CUTB(b)::P(C),XS(d)
- B(b);S_CUTR(a)::P(C),XS(e)
- B(b);N_GUARD::P(C),XS(d)
- S(d);N_GUARD,XR(A)::R(K)+S(H),XS(e)
- S(d);N_GUARD::R(K)+S(H),XS(e)
- S(e);N_GUARD,XR(A)::R(K)+S(H),XS(d)
- S(e);N_GUARD,XQ(B)::R(K)+S(H),XS(d)
- S(e);N_GUARD::R(K)+S(H),XS(d)
- Tries
- Try
- S(H);CHECK
- Vars
- S(d);P_SPINS(d)::S(H),XP(h)
- Refutation
- S(e);P_SPINS(e)
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- R(a);XR(A)::P(C),XS(d)
- B(b);XR(A)::P(C),XS(e)
- S(e);N_GUARD,XQ(B)::R(K)+S(H),XS(d)
- S(e);OGATEB,P_SPINS(e),XS(H)::B(G)
- S(e);XP(I)::P(C),XS(d)
- P(h);P_SPINP(h),XS(H)::P(C),XS(e)
- S(d);N_GUARD::R(K)+S(H),XS(e)
- R(a);::P(C),XS(e)
- B(b);::P(C),XS(d)
- S(d);::P(C),XS(e)
- S(e);N_GUARD::R(K)+S(H),XS(d)
- S(e);::P(C),XS(d)
- Refutation
- S(d);P_SPINS(d),XS(H)
- Try
- Actual
- Q(B);
- Threat
- DUALS(2)
- Vars
- K(f);P-FLIGHT,XP(E)::R(K)+S(H),DCHECK
- R(a);XQ(B)::P(C),XS(d)
- B(b);XQ(B)::P(C),XS(e)
- S(d);N_GUARD,XR(A)::R(K)+S(H),XS(e)
- S(d);P_SPINS(d),XS(H)::P(C),XS(e)
- S(e);N_GUARD,XR(A)::R(K)+S(H),XS(d)
- S(e);P_SPINS(e),XS(H)::P(C),XS(d)
- S(e);XP(I)::P(C),XS(d)
- B(b);::P(C),XS(d)
- S(d);::P(C),XS(e)
- S(e);::P(C),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).