MESON Chess Problem Database
Problem Display
PID: 133260 (1R1br3/3Q4/2N4q/2pn4/B1kBN3/Pr5p/1p2P3/n2R3K w - - 0 1)
Eyjolfsson, Eyjolfur
Schach-Echo, 1981
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Sd6#
- 1...Qd2
- 2.Sxd2#
- 2.Sd6#
- 1...Qe3
- 2.Sd6#
- 1...Qg5
- 2.Sd6#
- 1...Qg7
- 2.Sd2#
- 2.Sd6#
- 1...Qf8
- 2.Sd2#
- 1...Qh4
- 2.Sd2#
- 2.Sd6#
- 1...Qh5
- 2.Sd2#
- 2.Sd6#
- 1...Qd6
- 2.Sd2#
- 2.Sxd6#
- 1...Qe6
- 2.Sd2#
- 1...Qf6
- 2.Sd2#
- 1...Qg6
- 2.Sd2#
- 1...Qh7
- 2.Sd2#
- 2.Sd6#
- 1...Qh8
- 2.Sd2#
- 2.Sd6#
- 1...Rd3
- 2.exd3#
- 1...Re3
- 2.Sd2#
- 1...Rb6
- 2.Sa5#
- 1...Re5
- 2.Sxe5#
- 1...Rf8
- 2.Se5#
- 1...Rg8
- 2.Se5#
- 1...Rh8
- 2.Se5#
- 1...Bh4
- 2.Sa5#
- 1...Ba5
- 2.Sxa5#
- 1...Bg5
- 2.Sa5#
- 1...Bf6
- 2.Sd6#
- 2.Sa5#
- 1...Be7
- 2.Sa5#
- 2.Se5#
- 1...Sc2
- 2.Bxb3#
- 1...Se3
- 2.Sd2#
- 1...Sb4
- 2.Bb5#
- 1...Sf4
- 2.Sd2#
- 1...Sb6
- 2.Sa5#
- 1...Sc7
- 2.Sa5#
- 1...Se7
- 2.Se5#
- 1...cxd4
- 2.Rxd4#
- 1...Qc1
- Tries
- 1.Be5?
- threat
- 2.Qxd5#
- 1...Qxc6
- 2.Sd2#
- 1...Rxe5
- 2.Sxe5#
- 1...Qd2
- 2.Sxd2#
- 2.Sd6#
- 1...Qd6
- 2.Sd2#
- 2.Sxd6#
- 1...Qe6
- 2.Sd2#
- 1...Rd3
- 2.exd3#
- 1...Sc3
- 2.Qd3#
- 1...Se3
- 2.Sd2#
- 1...Sb4
- 2.Bb5#
- 1...Sf4
- 2.Sd2#
- 1...Sb6
- 2.Sa5#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sa5#
- 1...Se7!
- threat
- 1.Bf6?
- threat
- 2.Sd6#
- 2.Qxd5#
- 1...Qxf6
- 2.Qxd5#
- 1...Rxe4
- 2.Qxd5#
- 1...Bxf6
- 2.Sa5#
- 2.Qxd5#
- 1...Qd2
- 2.Sxd2#
- 2.Sd6#
- 1...Qf4
- 2.Qxd5#
- 1...Qg5
- 2.Sd6#
- 1...Qf8
- 2.Sd2#
- 2.Qxd5#
- 1...Qh5
- 2.Sd2#
- 2.Sd6#
- 1...Rd3
- 2.Sd6#
- 2.exd3#
- 1...Re5
- 2.Sxe5#
- 1...Re6
- 2.Qxd5#
- 1...Bc7
- 2.Qxd5#
- 1...Be7
- 2.Sa5#
- 2.Se5#
- 2.Qxd5#
- 1...Sc3
- 2.Sd6#
- 2.Qd3#
- 1...Se3
- 2.Sd2#
- 2.Sd6#
- 1...Sb4
- 2.Sd6#
- 2.Bb5#
- 1...Sf4
- 2.Sd2#
- 2.Sd6#
- 1...Sb6
- 2.Sd6#
- 2.Sa5#
- 1...Sc7
- 2.Sd6#
- 2.Sa5#
- 1...Se7
- 2.Sd6#
- 2.Se5#
- 1...Sxf6!
- threat
- 1.Bg7?
- threat
- 2.Qxd5#
- 1...Qxc6
- 2.Sd2#
- 1...Qd2
- 2.Sxd2#
- 2.Sd6#
- 1...Qg5
- 2.Sd6#
- 1...Qh5
- 2.Sd2#
- 2.Sd6#
- 1...Qd6
- 2.Sd2#
- 2.Sxd6#
- 1...Qe6
- 2.Sd2#
- 1...Rd3
- 2.exd3#
- 1...Re5
- 2.Sxe5#
- 1...Sc3
- 2.Qd3#
- 1...Se3
- 2.Sd2#
- 1...Sb4
- 2.Bb5#
- 1...Sf4
- 2.Sd2#
- 1...Sb6
- 2.Sa5#
- 1...Sc7
- 2.Sa5#
- 1...Se7
- 2.Se5#
- 1...Sf6!
- threat
- 1.Bh8?
- threat
- 2.Qxd5#
- 1...Qxc6
- 2.Sd2#
- 1...Qd2
- 2.Sxd2#
- 2.Sd6#
- 1...Qg5
- 2.Sd6#
- 1...Qh5
- 2.Sd2#
- 2.Sd6#
- 1...Qd6
- 2.Sd2#
- 2.Sxd6#
- 1...Qe6
- 2.Sd2#
- 1...Rd3
- 2.exd3#
- 1...Re5
- 2.Sxe5#
- 1...Sc3
- 2.Qd3#
- 1...Se3
- 2.Sd2#
- 1...Sb4
- 2.Bb5#
- 1...Sf4
- 2.Sd2#
- 1...Sb6
- 2.Sa5#
- 1...Sc7
- 2.Sa5#
- 1...Se7
- 2.Se5#
- 1...Sf6!
- threat
- 1.Rxd8?
- threat
- 2.Sa5#
- 2.Qxd5#
- 1...Rxa3
- 2.Qxd5#
- 1...Rxd8
- 2.Sa5#
- 2.Se5#
- 1...Sf6
- 2.Sa5#
- 1...Qd2
- 2.Sxd2#
- 2.Sd6#
- 2.Qxd5#
- 1...Qg5
- 2.Sd6#
- 2.Sa5#
- 1...Qh5
- 2.Sd2#
- 2.Sd6#
- 2.Sa5#
- 1...Qd6
- 2.Sd2#
- 2.Sxd6#
- 2.Sa5#
- 1...Qe6
- 2.Sd2#
- 2.Sa5#
- 1...Rd3
- 2.Qxd5#
- 2.exd3#
- 1...Rb5
- 2.Qxd5#
- 1...Re5
- 2.Sa5#
- 2.Sxe5#
- 1...Sc3
- 2.Sa5#
- 1...Se3
- 2.Sd2#
- 2.Sa5#
- 1...Sb4
- 2.Sa5#
- 1...Sf4
- 2.Sd2#
- 2.Sa5#
- 1...Sb6
- 2.Sa5#
- 1...Sc7
- 2.Sa5#
- 1...Se7
- 2.Sa5#
- 2.Se5#
- 1...Qxc6!
- threat
- 1.Be5?
- Keys
- 1.Bxb2!
- threat
- 2.Qxd5#
- 1...Qxc6
- 2.Sd2#
- 1...Qd2
- 2.Sxd2#
- 2.Sd6#
- 1...Qg5
- 2.Sd6#
- 1...Qh5
- 2.Sd2#
- 2.Sd6#
- 1...Qd6
- 2.Sd2#
- 2.Sxd6#
- 1...Qe6
- 2.Sd2#
- 1...Rd3
- 2.exd3#
- 1...Re5
- 2.Sxe5#
- 1...Sc3
- 2.Qd3#
- 1...Se3
- 2.Sd2#
- 1...Sb4
- 2.Bb5#
- 1...Sf4
- 2.Sd2#
- 1...Sb6
- 2.Sa5#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sa5#
- 1...Se7
- 2.Se5#
- threat
- 1.Bxb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 15
- Sets
- Q(h);N_GUARD,P_PINR(A)::S(G)
- Q(h);N_GUARD::S(G)
- R(c);OGATE::P(C),XR(c)
- R(c);S_CUTQ(h)::S(G)
- R(c);S_CUTB(i)::S(H)
- R(j);N_GUARD::S(H),XR(j)
- R(j);N_GUARD::S(H)
- B(i);N_GUARD::S(H)
- B(i);N_GUARD::S(H),XB(i)
- S(a);N_GUARD::B(E),XR(c)
- S(g);S_CUTQ(h)::S(G)
- S(g);S_CUTR(c)::B(E)
- S(g);S_CUTB(i)::S(H)
- S(g);S_CUTR(j)::S(H)
- P(f);OGATE,XB(F)::R1(A),XP(f)
- Tries
- Try
- B(F);
- Threat
- QAB1(I),XS(g)
- Vars
- Q(h);N_GUARD,XS(H)::S(G)
- R(j);XB(F)::S(H),XR(j)
- Q(h);N_GUARD::S(G)
- R(c);OGATE::P(C),XR(c)
- S(g);OGATE::QAB1(I)
- S(g);S_CUTQ(h)::S(G)
- S(g);S_CUTR(c)::B(E)
- S(g);S_CUTB(i)::S(H)
- Refutation
- S(g);
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(h);XB(F)::QAB1(I),XS(g)
- R(j);XS(G)::QAB1(I),XS(g)
- Q(h);::QAB1(I),XS(g)
- Q(h);::S(G)
- R(j);N_GUARD::S(H),XR(j)
- R(j);::QAB1(I),XS(g)
- B(i);::QAB1(I),XS(g)
- Refutation
- S(g);XB(F)
- Try
- B(F);
- Threat
- QAB1(I),XS(g)
- Vars
- Q(h);N_GUARD,XS(H)::S(G)
- Q(h);N_GUARD::S(G)
- R(c);OGATE::P(C),XR(c)
- R(j);N_GUARD::S(H),XR(j)
- S(g);OGATE::QAB1(I)
- S(g);S_CUTQ(h)::S(G)
- S(g);S_CUTR(c)::B(E)
- S(g);S_CUTB(i)::S(H)
- S(g);S_CUTR(j)::S(H)
- Refutation
- S(g);
- Try
- B(F);
- Threat
- QAB1(I),XS(g)
- Vars
- Q(h);N_GUARD,XS(H)::S(G)
- Q(h);N_GUARD::S(G)
- R(c);OGATE::P(C),XR(c)
- R(j);N_GUARD::S(H),XR(j)
- S(g);OGATE::QAB1(I)
- S(g);S_CUTQ(h)::S(G)
- S(g);S_CUTR(c)::B(E)
- S(g);S_CUTB(i)::S(H)
- S(g);S_CUTR(j)::S(H)
- Refutation
- S(g);
- Try
- R(J);XB(i)
- Threat
- DUALS(2)
- Vars
- R(c);XP(D)::QAB1(I),XS(g)
- S(g);::S(H)
- R(c);::QAB1(I),XS(g)
- Refutation
- Q(h);XS(H)
- Try
- Actual
- B(F);XP(b)
- Threat
- QAB1(I),XS(g)
- Vars
- Q(h);N_GUARD,XS(H)::S(G)
- Q(h);N_GUARD::S(G)
- R(c);OGATE::P(C),XR(c)
- R(j);N_GUARD::S(H),XR(j)
- S(g);OGATE::QAB1(I)
- S(g);S_CUTQ(h)::S(G)
- S(g);S_CUTR(c)::B(E)
- S(g);S_CUTB(i)::S(H)
- S(g);S_CUTR(j)::S(H)
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).