MESON Chess Problem Database
Problem Display
PID: 15291 (1bb5/4BPKn/2P1p1B1/1p2k3/2P1N1p1/3R4/4N1r1/1n2Q3 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
7th Place, 02. WCCT, 1980-1983
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxe2
- 2.Qg3#
- 1...Rh2
- 2.Qg3#
- 1...Rg3
- 2.Qxg3#
- 1...Bd6
- 2.Bxd6#
- 1...Ba7
- 2.Bd6#
- 1...Sd2
- 2.Qa1#
- 1...Sa3
- 2.Qc3#
- 2.Qa1#
- 1...Sc3
- 2.Qxc3#
- 1...Sg5
- 2.Bf6#
- 1...Sf6
- 2.Bxf6#
- 1...Sf8
- 2.Bf6#
- 1...bxc4
- 2.Qa5#
- 1...Rxe2
- Tries
- 1.Sd2?
- threat
- 2.Re3#
- 1...Rxe2
- 2.Qg3#
- 1...Sxd2
- 2.Qa1#
- 1...bxc4
- 2.Sxc4#
- 1...Rg3
- 2.Qxg3#
- 1...Ba7
- 2.Bd6#
- 1...Sg5
- 2.Bf6#
- 1...Sf6
- 2.Bxf6#
- 1...Sc3!
- threat
- 1.Sf2?
- threat
- 2.Re3#
- 1...bxc4
- 2.Qa5#
- 1...Ba7
- 2.Bd6#
- 1...Sd2
- 2.Qa1#
- 1...Sc3
- 2.Qxc3#
- 1...Sg5
- 2.Bf6#
- 1...Sf6
- 2.Bxf6#
- 1...Rg3!
- threat
- 1.S4c3?
- threat
- 2.Re3#
- 1...Rxe2
- 2.Qg3#
- 1...Sxc3
- 2.Qxc3#
- 1...Rg3
- 2.Qxg3#
- 1...Ba7
- 2.Bd6#
- 1...Sg5
- 2.Bf6#
- 1...Sf6
- 2.Bxf6#
- 1...Sd2!
- threat
- 1.S4g3?
- threat
- 2.Re3#
- 1...Rxg3
- 2.Qxg3#
- 1...bxc4
- 2.Qa5#
- 1...Ba7
- 2.Bd6#
- 1...Sd2
- 2.Qa1#
- 1...Sc3
- 2.Qxc3#
- 1...Sg5
- 2.Bf6#
- 1...Sf6
- 2.Bxf6#
- 1...Rxe2!
- threat
- 1.Sc5?
- threat
- 2.Re3#
- 1...Rxe2
- 2.Qg3#
- 1...Rg3
- 2.Qxg3#
- 1...Sd2
- 2.Qa1#
- 1...Sc3
- 2.Qxc3#
- 1...Sg5
- 2.Bf6#
- 1...Sf6
- 2.Bxf6#
- 1...bxc4!
- threat
- 1.Sd6?
- threat
- 2.Re3#
- 1...Rxe2
- 2.Qg3#
- 1...bxc4
- 2.Sxc4#
- 2.Qa5#
- 1...Rg3
- 2.Qxg3#
- 1...Sd2
- 2.Qa1#
- 1...Sc3
- 2.Qxc3#
- 1...Sg5
- 2.Bf6#
- 1...Sf6
- 2.Bxf6#
- 1...Ba7!
- threat
- 1.Sf6?
- threat
- 2.Re3#
- 1...Rxe2
- 2.Qg3#
- 1...Sxf6
- 2.Bxf6#
- 1...Rg3
- 2.Qxg3#
- 1...Ba7
- 2.Bd6#
- 1...Sd2
- 2.Qa1#
- 1...Sc3
- 2.Qxc3#
- 1...Sg5!
- threat
- 1.Bxh7?
- threat
- 2.Bf6#
- 1...Rxe2
- 2.Qg3#
- 1...Rf2!
- threat
- 1.Bc5?
- threat
- 2.Bd4#
- 1...Rxe2
- 2.Qg3#
- 1...Ba7
- 2.Bd6#
- 1...bxc4!
- threat
- 1.Re3?
- threat
- 2.Sd2#
- 2.Sf2#
- 2.S4c3#
- 2.S4g3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...bxc4
- 2.S4c3#
- 2.Sf6#
- 2.Qa5#
- 1...Rf2
- 2.Sd2#
- 2.Sxf2#
- 2.S4c3#
- 2.S4g3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Rg3
- 2.S4xg3#
- 2.Qxg3#
- 1...Bd6
- 2.Sd2#
- 2.Sf2#
- 2.S4c3#
- 2.S4g3#
- 2.Sc5#
- 2.Sg5#
- 2.Sxd6#
- 2.Sf6#
- 2.Bxd6#
- 1...Ba7
- 2.Sc5#
- 2.Bd6#
- 1...Sd2
- 2.Sxd2#
- 2.Qa1#
- 1...Sc3
- 2.S4xc3#
- 2.Qxc3#
- 1...Sg5
- 2.Sxg5#
- 2.Bf6#
- 1...Sf6
- 2.Sxf6#
- 2.Bxf6#
- 1...g3
- 2.Sd2#
- 2.Sf2#
- 2.S4c3#
- 2.S4xg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Rxe2!
- threat
- 1.Qf2?
- threat
- 2.Qd4#
- 2.Qc5#
- 2.Qf4#
- 1...Bd6
- 2.Bxd6#
- 2.Qd4#
- 2.Qf4#
- 1...Ba7
- 2.Bd6#
- 2.Qf4#
- 1...Sc3
- 2.Qd4#
- 2.Qf4#
- 1...Sf6
- 2.Bxf6#
- 2.Qd4#
- 2.Qf4#
- 2.Qxf6#
- 1...Rxf2!
- threat
- 1.Qb4?
- threat
- 2.Qc5#
- 2.Qxb5#
- 1...bxc4
- 2.Qa5#
- 2.Qc5#
- 2.Qb5#
- 2.Qxb8#
- 1...Bd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Ba7
- 2.Bd6#
- 2.Qd6#
- 1...Ba6
- 2.Qc5#
- 1...Sa3
- 2.Qc3#
- 2.Qc5#
- 2.Qb2#
- 1...Sc3
- 2.Qxc3#
- 1...Sf6
- 2.Bxf6#
- 1...Rxe2!
- threat
- 1.Qxb1?
- threat
- 2.Qa1#
- 2.Qb2#
- 2.Qxb5#
- 1...bxc4
- 2.Qb5#
- 2.Qxb8#
- 1...Rg1
- 2.Qb2#
- 2.Qxb5#
- 1...Bd6
- 2.Bxd6#
- 2.Qa1#
- 2.Qb2#
- 1...Ba7
- 2.Bd6#
- 1...Ba6
- 2.Qa1#
- 2.Qb2#
- 1...Sf6
- 2.Bxf6#
- 2.Qa1#
- 2.Qb2#
- 1...b4
- 2.Qa1#
- 2.Qb2#
- 1...Rxe2!
- threat
- 1.c7?
- threat
- 2.Bd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rxe2
- 2.Bd6#
- 2.Qg3#
- 2.cxb8Q#
- 2.cxb8B#
- 1...bxc4
- 2.Bd6#
- 2.Qa5#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rf2
- 2.Bd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rg1
- 2.Bd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rh2
- 2.Bd6#
- 2.Qg3#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rg3
- 2.Bd6#
- 2.Qxg3#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Ba7
- 2.Bd6#
- 1...Ba6
- 2.Bd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bb7
- 2.Bd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bd7
- 2.Bd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sd2
- 2.Bd6#
- 2.Qa1#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sa3
- 2.Bd6#
- 2.Qc3#
- 2.Qa1#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sc3
- 2.Bd6#
- 2.Qxc3#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sg5
- 2.Bd6#
- 2.Bf6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sf6
- 2.Bd6#
- 2.Bxf6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sf8
- 2.Bd6#
- 2.Bf6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...g3
- 2.Bd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...b4
- 2.Bd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bxc7!
- threat
- 1.f8Q?
- threat
- 2.Qf4#
- 1...Rxe2
- 2.Qg3#
- 1...Sxf8
- 2.Bf6#
- 1...Sf6
- 2.Bxf6#
- 2.Qxf6#
- 1...Rf2!
- threat
- 1.Sd2?
- Keys
- 1.Sg5!
- threat
- 2.Re3#
- 1...Rxe2
- 2.Qg3#
- 1...Sxg5
- 2.Bf6#
- 1...bxc4
- 2.Qa5#
- 1...Rg3
- 2.Qxg3#
- 1...Ba7
- 2.Bd6#
- 1...Sd2
- 2.Qa1#
- 1...Sc3
- 2.Qxc3#
- 1...Sf6
- 2.Bxf6#
- threat
- 1.Sg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- R(b);N_GUARD,XS(B)::QAB(A)
- R(b);N_GUARD::QAB(A)
- R(b);N_GUARD::QAB(A),XR(b)
- B(h);N_GUARD::B(H),XB(h)
- B(h);N_GUARD::B(H)
- S(a);OGATE::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- P(d);OGATEB,XP(D)::QAR(A)
- Tries
- Try
- S(E);
- Threat
- R(C)
- Vars
- R(b);N_GUARD,P_SPINR(b),XS(B)::QAB(A)
- S(a);OGATE,XS(E)::QAB(A)
- P(d);XP(D)::S(E),XP(d)
- R(b);N_GUARD::QAB(A),XR(b)
- B(h);N_GUARD::B(H)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- Refutation
- S(a);
- Try
- S(E);
- Threat
- R(C)
- Vars
- P(d);OGATEB,XP(D)::QAR(A)
- B(h);N_GUARD::B(H)
- S(a);OGATE::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- Refutation
- R(b);
- Try
- S(E);
- Threat
- R(C)
- Vars
- R(b);N_GUARD,P_SPINR(b),XS(B)::QAB(A)
- S(a);OGATE,XS(E)::QAB(A),XS(a)
- R(b);N_GUARD::QAB(A),XR(b)
- B(h);N_GUARD::B(H)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- Refutation
- S(a);
- Try
- S(E);
- Threat
- R(C)
- Vars
- R(b);OGATE,XS(E)::QAB(A),XR(b)
- P(d);OGATEB,XP(D)::QAR(A)
- B(h);N_GUARD::B(H)
- S(a);OGATE::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- Refutation
- R(b);P_SPINR(b),XS(B)
- Try
- S(E);
- Threat
- R(C)
- Vars
- R(b);N_GUARD,P_SPINR(b),XS(B)::QAB(A)
- R(b);N_GUARD::QAB(A),XR(b)
- S(a);OGATE::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- Refutation
- P(d);XP(D)
- Try
- S(E);
- Threat
- R(C)
- Vars
- R(b);N_GUARD,P_SPINR(b),XS(B)::QAB(A)
- R(b);N_GUARD::QAB(A),XR(b)
- S(a);OGATE::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- Refutation
- B(h);
- Try
- S(E);
- Threat
- R(C)
- Vars
- R(b);N_GUARD,P_SPINR(b),XS(B)::QAB(A)
- S(g);OGATE,XS(E)::B(H),XS(g)
- R(b);N_GUARD::QAB(A),XR(b)
- B(h);N_GUARD::B(H)
- S(a);OGATE::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- S(g);
- Try
- B(G);XS(g)
- Threat
- B(H)
- Vars
- R(b);N_GUARD,XS(B)::QAB(A)
- Refutation
- R(b);
- Try
- B(H);
- Threat
- B(H)
- Vars
- R(b);N_GUARD,XS(B)::QAB(A)
- B(h);N_GUARD::B(H)
- Refutation
- P(d);XP(D)
- Try
- R(C);
- Threat
- DUALS(8)
- Refutation
- R(b);XS(B)
- Try
- Q(A);
- Threat
- DUALS(3)
- Refutation
- R(b);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(i);::QAR2(A)
- S(a);N_GUARD::QAB(A),XS(a)
- S(g);N_GUARD::B(H),XS(g)
- Refutation
- R(b);XS(B)
- Try
- Q(A);XS(a)
- Threat
- DUALS(3)
- Vars
- B(h);N_GUARD::B(H)
- Refutation
- R(b);XS(B)
- Try
- P(F);
- Threat
- DUALS(3)
- Vars
- B(h);::B(H)
- Refutation
- B(h);XP(F)
- Try
- P(I);
- Threat
- QAB1(I)
- Vars
- R(b);N_GUARD,XS(B)::QAB(A)
- S(g);N_GUARD,XQ(I)::B(H)
- Refutation
- R(b);
- Try
- Actual
- S(E);
- Threat
- R(C)
- Vars
- R(b);N_GUARD,P_SPINR(b),XS(B)::QAB(A)
- S(g);N_GUARD,XS(E)::B(H)
- P(d);OGATEB,XP(D)::QAR(A)
- R(b);N_GUARD::QAB(A),XR(b)
- B(h);N_GUARD::B(H)
- S(a);OGATE::QAB(A)
- S(a);N_GUARD::QAB(A),XS(a)
- S(g);N_GUARD::B(H),XS(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).