MESON Chess Problem Database
Problem Display
PID: 50062 (4Q3/5p2/2pb1p2/1Npk1NPb/1Pp4R/2P3nB/2K3P1/3nR1B1 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Comm., Thema Danicum, 1993
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Bf3
- 2.Qxf7#
- 1...Bg4
- 2.Qxf7#
- 1...Bg6
- 2.Rxd1#
- 1...Bf4
- 2.Se7#
- 1...Be5
- 2.Se7#
- 1...Bc7
- 2.Sxc7#
- 2.Se7#
- 1...Be7
- 2.Sc7#
- 2.Sxe7#
- 1...Bb8
- 2.Se7#
- 1...Bf8
- 2.Sc7#
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Sxc3
- 2.Sxc3#
- 2.Se3#
- 1...Se3+
- 2.Sxe3#
- 1...Sf1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sxf5
- 2.Qe4#
- 1...cxb5
- 2.Qa8#
- 1...Bf3
- Tries
- 1.Sbd4?
- threat
- 2.Qxc6#
- 1...Se3+
- 2.Sxe3#
- 1...cxd4
- 2.Rxd4#
- 1...Se2
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Be2!
- threat
- 1.Sa7?
- threat
- 2.Qxc6#
- 1...Se3+
- 2.Sxe3#
- 1...Se2
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Be2!
- threat
- 1.Bg4?
- threat
- 2.Rxd1#
- 1...Se3+
- 2.Sxe3#
- 1...Bxg4
- 2.Qxf7#
- 1...Sxc3
- 2.Sxc3#
- 2.Se3#
- 1...Sxf5
- 2.Qe4#
- 1...Bf4
- 2.Se7#
- 1...Be5
- 2.Se7#
- 1...Be7
- 2.Sc7#
- 2.Sxe7#
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Sf1
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Se2!
- threat
- 1.Re2?
- threat
- 2.Rd2#
- 1...Se3+
- 2.Sxe3#
- 1...Sxe2
- 2.Qe4#
- 1...Sxf5
- 2.Qe4#
- 1...Bf4
- 2.Se7#
- 1...Be5
- 2.Se7#
- 1...Be7
- 2.Sc7#
- 2.Sxe7#
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Sf1
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Bxe2!
- threat
- 1.Re5+?
- 1...Bxe5
- 2.Se7#
- 1...fxe5!
- 1...Bxe5
- 1.Rg4?
- threat
- 2.Rxd1#
- 1...Se3+
- 2.Sxe3#
- 1...Bxg4
- 2.Qxf7#
- 1...Sxc3
- 2.Sxc3#
- 2.Se3#
- 1...Sxf5
- 2.Qe4#
- 1...Bf4
- 2.Se7#
- 1...Be7
- 2.Sc7#
- 2.Sxe7#
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Sf1
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Be5!
- threat
- 1.Rxh5?
- threat
- 2.Rxd1#
- 2.Qxf7#
- 1...Se3+
- 2.Sxe3#
- 1...Sxc3
- 2.Sxc3#
- 2.Se3#
- 2.Qxf7#
- 1...Sxf5
- 2.Qxf7#
- 2.Qe4#
- 1...cxb5
- 2.Rxd1#
- 2.Qa8#
- 1...Bf4
- 2.Se7#
- 2.Qxf7#
- 1...Be5
- 2.Se7#
- 2.Qxf7#
- 1...Be7
- 2.Sc7#
- 2.Sxe7#
- 2.Qxf7#
- 1...Sb2
- 2.Se3#
- 2.Qxf7#
- 1...Sf2
- 2.Se3#
- 2.Qxf7#
- 1...Sf1
- 2.Qxf7#
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Se2!
- threat
- 1.Qe5+?
- 1...Bxe5
- 2.Se7#
- 1...fxe5!
- 1...Bxe5
- 1.Qe7?
- threat
- 2.Qxd6#
- 1...Se3+
- 2.Sxe3#
- 1...Bxe7
- 2.Sc7#
- 2.Sxe7#
- 1...Sxf5
- 2.Qe4#
- 1...Bf4
- 2.Qxc5#
- 1...Bc7
- 2.Sxc7#
- 2.Qxc5#
- 1...Bb8
- 2.Qxc5#
- 1...Se4
- 2.Qxe4#
- 1...Be5!
- threat
- 1.g6?
- threat
- 2.Qxf7#
- 1...Se3+
- 2.Sxe3#
- 1...Bxg6
- 2.Rxd1#
- 1...cxb5
- 2.Qa8#
- 1...fxg6
- 2.Qf7#
- 2.Qe6#
- 2.Qg8#
- 1...Se2
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Be2!
- threat
- 1.Sbd4?
- Keys
- 1.Bxc5!
- threat
- 2.Rd4#
- 1...Se3+
- 2.Sxe3#
- 1...Bxc5
- 2.Sc7#
- 1...Sxf5
- 2.Qe4#
- 1...Bg4
- 2.Qxf7#
- 1...Bf4
- 2.Se7#
- 1...Be5
- 2.Se7#
- 1...Se2
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- threat
- 1.Bxc5!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- B(f);N_GUARD::QAB(L),XP(j)
- B(f);N_GUARD,P_PINS(J)::R(A),XS(a)
- B(h);N_GUARD::S(J)
- B(h);N_GUARD::S(I)
- S(a);N_GUARD::S(J)
- S(a);CHECK,N_GUARD::S(J),XS(a)
- S(b);N_GUARD::QAB1(L)
- S(b);N_GUARD::QAB1(L),XS(b)
- S(b);N_GUARD,XS(J)::QAB1(L)
- P(g);OGATEB,XS(I)::QAB(L)
- Tries
- Try
- S(I);
- Threat
- QAB1(L),XP(g)
- Vars
- S(a);CHECK,N_GUARD::S(J),XS(a)
- P(d);OGATE,XS(I)::R1(H),XP(d)
- S(b);N_GUARD::QAB1(L)
- S(b);N_GUARD::QAB1(L),XS(b)
- Refutation
- B(f);
- Try
- S(I);
- Threat
- QAB1(L),XP(g)
- Vars
- S(a);CHECK,N_GUARD::S(J),XS(a)
- S(b);N_GUARD::QAB1(L)
- S(b);N_GUARD::QAB1(L),XS(b)
- Refutation
- B(f);
- Try
- B(F);
- Threat
- R(A),XS(a)
- Vars
- S(a);CHECK,N_GUARD::S(J),XS(a)
- B(f);N_GUARD,XB(F)::QAB(L),XP(j)
- S(b);N_GUARD,XS(J)::QAB1(L)
- B(h);N_GUARD::S(J)
- S(a);N_GUARD::S(J)
- S(b);N_GUARD::QAB1(L)
- S(b);N_GUARD::QAB1(L),XS(b)
- Refutation
- S(b);
- Try
- R(A);
- Threat
- R(A)
- Vars
- S(a);CHECK,N_GUARD::S(J),XS(a)
- S(b);N_GUARD,XR(A)::QAB1(L)
- S(b);N_GUARD,XS(J)::QAB1(L)
- B(h);N_GUARD::S(J)
- S(a);N_GUARD::S(J)
- S(b);N_GUARD::QAB1(L)
- S(b);N_GUARD::QAB1(L),XS(b)
- Refutation
- B(f);XR(A)
- Try
- R(A);CHECK
- Vars
- B(h);SBLOCK,XR(A)::S(J)
- Refutation
- P(i);XR(A)
- Try
- R(H);
- Threat
- R(A),XS(a)
- Vars
- S(a);CHECK,N_GUARD::S(J),XS(a)
- B(f);N_GUARD,XR(H)::QAB(L),XP(j)
- S(b);N_GUARD,XS(J)::QAB1(L)
- B(h);N_GUARD::S(J)
- S(a);N_GUARD::S(J)
- S(b);N_GUARD::QAB1(L)
- S(b);N_GUARD::QAB1(L),XS(b)
- Refutation
- B(h);
- Try
- R(H);XB(f)
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::S(J),XS(a)
- S(b);N_GUARD::QAB1(L),XS(b)
- Refutation
- S(b);
- Try
- Q(L);CHECK
- Vars
- B(h);XQ(L)::S(J)
- Refutation
- P(i);XQ(L)
- Try
- Q(L);
- Threat
- QAR1(L),XB(h)
- Vars
- S(a);CHECK,N_GUARD::S(J),XS(a)
- S(b);N_GUARD,XS(J)::QAB1(L)
- B(h);OGATE::QAR1(L),XP(d)
- S(b);N_GUARD::QAB1(L),XS(b)
- Refutation
- B(h);
- Try
- P(K);
- Threat
- QAB(L),XP(j)
- Vars
- S(a);CHECK,N_GUARD::S(J),XS(a)
- B(f);N_GUARD,P_PINS(J),XP(K)::R(A),XS(a)
- P(g);OGATEB,XS(I)::QAB(L)
- S(b);N_GUARD::QAB1(L)
- S(b);N_GUARD::QAB1(L),XS(b)
- Refutation
- B(f);
- Try
- Actual
- B(B);XP(d)
- Threat
- R1(H)
- Vars
- S(a);CHECK,N_GUARD::S(J),XS(a)
- B(h);N_GUARD,XB(B)::S(I)
- S(b);N_GUARD,XS(J)::QAB1(L)
- B(f);N_GUARD::QAB(L),XP(j)
- B(h);N_GUARD::S(J)
- S(b);N_GUARD::QAB1(L)
- S(b);N_GUARD::QAB1(L),XS(b)
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).