MESON Chess Problem Database
Problem Display
PID: 274347 (K4R2/3Np2Q/p2b2n1/3p2r1/4k3/5R2/B5P1/qb4BN w - - 0 1)
Luukkonen, Emil
Schackvarlden, 1938
#2
9 + 9
| 15601 | Albrecht-Leiss-Degener Collection | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Bxb1#
- 1...Qf6
- 2.Bxb1#
- 1...Qg7
- 2.Bxb1#
- 1...Qh8
- 2.Bxb1#
- 1...Re5
- 2.Sg3#
- 2.R8f4#
- 1...Ba3
- 2.R8f4#
- 1...Bb4
- 2.R8f4#
- 1...Bf4
- 2.R8xf4#
- 1...Bc5
- 2.R8f4#
- 1...Be5
- 2.Sc5#
- 1...d4
- 2.Sf2#
- 1...e5
- 2.Sf6#
- 1...Qe5
- Tries
- 1.Sc5+?
- 1...Ke5
- 2.Qg7#
- 1...Bxc5!
- 1...Ke5
- 1.Bc5?
- threat
- 2.Sf2#
- 2.Re3#
- 1...Qxa2
- 2.Re3#
- 1...Rxg2
- 2.Re3#
- 1...Bxc5
- 2.R8f4#
- 1...Qb2
- 2.Re3#
- 1...Qc3
- 2.Sf2#
- 1...Qf6
- 2.Sf2#
- 2.Bxb1#
- 1...Rg3
- 2.Sf2#
- 1...Rf5
- 2.Sf2#
- 1...Bg3
- 2.Re3#
- 1...Bf4
- 2.Sf2#
- 2.R8xf4#
- 1...d4
- 2.Sf2#
- 1...Qd4!
- threat
- 1.Bb6?
- threat
- 2.Sf2#
- 2.Re3#
- 1...Qxa2
- 2.Re3#
- 1...Rxg2
- 2.Re3#
- 1...Bc5
- 2.R8f4#
- 1...Qb2
- 2.Re3#
- 1...Qc3
- 2.Sf2#
- 1...Qf6
- 2.Sf2#
- 2.Bxb1#
- 1...Rg3
- 2.Sf2#
- 1...Rf5
- 2.Sf2#
- 1...Bg3
- 2.Re3#
- 1...Bf4
- 2.Sf2#
- 2.R8xf4#
- 1...d4
- 2.Sf2#
- 1...Qd4!
- threat
- 1.Ba7?
- threat
- 2.Sf2#
- 2.Re3#
- 1...Qxa2
- 2.Re3#
- 1...Rxg2
- 2.Re3#
- 1...Bc5
- 2.R8f4#
- 1...Qb2
- 2.Re3#
- 1...Qc3
- 2.Sf2#
- 1...Qf6
- 2.Sf2#
- 2.Bxb1#
- 1...Rg3
- 2.Sf2#
- 1...Rf5
- 2.Sf2#
- 1...Bg3
- 2.Re3#
- 1...Bf4
- 2.Sf2#
- 2.R8xf4#
- 1...d4
- 2.Sf2#
- 1...Qd4!
- threat
- 1.Qxg6+?
- 1...Rf5
- 2.Qxf5#
- 1...Rxg6!
- 1...Rf5
- 1.Qh8?
- threat
- 2.Sf2#
- 2.Re3#
- 1...Qxh8
- 2.Bxb1#
- 1...Qxa2
- 2.Re3#
- 2.Qd4#
- 1...Rxg2
- 2.Re3#
- 1...Sxf8
- 2.Sf2#
- 1...Qd4
- 2.Qxd4#
- 1...Qb2
- 2.Re3#
- 1...Qc3
- 2.Sf2#
- 1...Qe5
- 2.Bxb1#
- 1...Qf6
- 2.Bxb1#
- 1...Qg7
- 2.Bxb1#
- 1...Rg3
- 2.Sf2#
- 1...Re5
- 2.Sg3#
- 1...Rf5
- 2.Sf2#
- 1...Bg3
- 2.Sc5#
- 2.Re3#
- 1...Bf4
- 2.Sf2#
- 2.Sc5#
- 1...Bc5
- 2.Sxc5#
- 1...Be5
- 2.Sc5#
- 1...Se5
- 2.R8f4#
- 1...d4
- 2.Sf2#
- 1...e5
- 2.Sf6#
- 1...Sxh8!
- threat
- 1.Sc5+?
- Keys
- 1.Qg7!
- threat
- 2.Sf2#
- 2.Re3#
- 1...Qxg7
- 2.Bxb1#
- 1...Qxa2
- 2.Re3#
- 2.Qd4#
- 1...Rxg2
- 2.Re3#
- 1...Sxf8
- 2.Sf2#
- 1...Qd4
- 2.Qxd4#
- 1...Qb2
- 2.Re3#
- 1...Qc3
- 2.Sf2#
- 1...Qe5
- 2.Bxb1#
- 1...Qf6
- 2.Bxb1#
- 1...Rg3
- 2.Sf2#
- 1...Re5
- 2.Sg3#
- 1...Rf5
- 2.Sf2#
- 1...Bg3
- 2.Sc5#
- 2.Re3#
- 1...Bf4
- 2.Sf2#
- 2.Sc5#
- 1...Bc5
- 2.Sxc5#
- 1...Be5
- 2.Sc5#
- 1...Se5
- 2.R8f4#
- 1...d4
- 2.Sf2#
- 1...e5
- 2.Sf6#
- threat
- 1.Qg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 9
- REMOVED MATES = 4
- Sets
- Q(a);N_GUARD::B(C),XB(b)
- Q(a);N_GUARD,P_PINR(I)::B(C),XB(b)
- B(g);N_GUARD::R1(I)
- B(g);N_GUARD::R1(I),XB(g)
- B(g);N_GUARD,SBLOCK::S(F)
- P(d);SBLOCK::S(B)
- P(i);N_GUARD,SBLOCK,S_CUTQ(a)::S(F)
- Tries
- Try
- S(F);CHECK
- Vars
- K(c);N_SPINS(h),P-FLIGHT,S_CUTB(g)::QAB(G)
- Refutation
- B(g);XS(F)
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- Q(a);XB(C)::R1(E)
- R(e);XP(D)::R1(E)
- B(g);N_GUARD,XB(A)::R1(I)
- Q(a);::R1(E)
- Q(a);::S(B)
- R(e);::S(B)
- R(e);N_SPINS(h)::S(B)
- B(g);::R1(E)
- P(d);::S(B)
- Refutation
- Q(a);
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- Q(a);XB(C)::R1(E)
- R(e);XP(D)::R1(E)
- B(g);N_GUARD::R1(I)
- Q(a);::R1(E)
- Q(a);::S(B)
- R(e);::S(B)
- R(e);N_SPINS(h)::S(B)
- B(g);::R1(E)
- P(d);::S(B)
- Refutation
- Q(a);
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- Q(a);XB(C)::R1(E)
- R(e);XP(D)::R1(E)
- B(g);N_GUARD::R1(I)
- Q(a);::R1(E)
- Q(a);::S(B)
- R(e);::S(B)
- R(e);N_SPINS(h)::S(B)
- B(g);::R1(E)
- P(d);::S(B)
- Refutation
- Q(a);
- Try
- Q(G);CHECK,XS(h)
- Vars
- R(e);N_GUARD,P_SPINR(e)::QAB1(G),XR(e)
- Refutation
- R(e);XQ(G)
- Try
- Q(G);N_PINS(h)
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,P_PINR(I),XQ(G)::B(C),XB(b)
- R(e);XP(D)::R1(E)
- S(h);XR(I)::S(B)
- Q(a);N_GUARD::QAR1(G),XQ(a)
- Q(a);::R1(E)
- Q(a);::S(B)
- Q(a);N_GUARD::B(C),XB(b)
- R(e);::S(B)
- R(e);N_GUARD,S_CUTB(g)::S(B)
- B(g);N_GUARD::S(F),XB(g)
- B(g);N_GUARD::S(F)
- S(h);N_GUARD,S_CUTB(g)::R1(I)
- P(d);::S(B)
- P(i);N_GUARD,SBLOCK,S_CUTQ(a)::S(F)
- Refutation
- S(h);XQ(G)
- Try
- Actual
- Q(G);N_PINS(h)
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XQ(G)::B(C),XB(b)
- R(e);XP(D)::R1(E)
- S(h);XR(I)::S(B)
- Q(a);N_GUARD::QAR1(G),XQ(a)
- Q(a);::R1(E)
- Q(a);::S(B)
- Q(a);N_GUARD::B(C),XB(b)
- R(e);::S(B)
- R(e);N_GUARD,S_CUTB(g)::S(B)
- B(g);N_GUARD::S(F),XB(g)
- B(g);N_GUARD::S(F)
- S(h);N_GUARD,S_CUTB(g)::R1(I)
- P(d);::S(B)
- P(i);N_GUARD,SBLOCK,S_CUTQ(a)::S(F)
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).