MESON Chess Problem Database
Problem Display
PID: 248127 (1b2R2B/Q1P2K2/N1P2n2/N1rkPB1n/R7/1P6/2P2q2/3r4 w - - 0 1)
Blikeng, Bjarne
Schach-Magazin, 1948
#2
13 + 7
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Qxc5#
- 1...Qg3
- 2.Qxc5#
- 1...Qh4
- 2.Qxc5#
- 1...Qf1
- 2.Qxc5#
- 1...Qd2
- 2.Qxc5#
- 1...Qe2
- 2.Qxc5#
- 1...Qg2
- 2.Qxc5#
- 1...Qh2
- 2.Qxc5#
- 1...Qf3
- 2.Qxc5#
- 1...Qf4
- 2.Qxc5#
- 1...Qxf5
- 2.Qxc5#
- 1...Rd4
- 2.Qxc5#
- 1...Rxc2
- 2.Sb4#
- 1...Rc3
- 2.Sb4#
- 1...Rc4
- 2.bxc4#
- 1...Rxa5
- 2.Sb4#
- 1...Rb5
- 2.c4#
- 1...Rxc6
- 2.Sb4#
- 1...Bxc7
- 2.Sxc7#
- 1...Sg4
- 2.Rd8#
- 1...Sh7
- 2.Rd8#
- 1...Sg8
- 2.Rd8#
- 1...Qe1
- Tries
- 1.Bxf6?
- threat
- 2.Be4#
- 2.Be6#
- 2.Rd8#
- 1...Qxc2
- 2.Be6#
- 2.Rd8#
- 1...Qxf5
- 2.Qxc5#
- 1...Rxa5
- 2.Sb4#
- 2.Be4#
- 1...Rxc6
- 2.Sb4#
- 2.Be4#
- 1...Bxc7
- 2.Sxc7#
- 2.Be4#
- 2.Be6#
- 1...Qe1
- 2.Be6#
- 2.Rd8#
- 2.Qxc5#
- 1...Qe3
- 2.Be6#
- 2.Rd8#
- 1...Qd4
- 2.Rd8#
- 1...Qh4
- 2.Be6#
- 2.Rd8#
- 2.Qxc5#
- 1...Qe2
- 2.Be6#
- 2.Rd8#
- 2.Qxc5#
- 1...Qg2
- 2.Be6#
- 2.Rd8#
- 2.Qxc5#
- 1...Qf3
- 2.Be6#
- 2.Rd8#
- 2.Qxc5#
- 1...Qf4
- 2.Be6#
- 2.Rd8#
- 2.Qxc5#
- 1...Re1
- 2.Be6#
- 2.Rd8#
- 1...Rd4
- 2.Rd8#
- 2.Qxc5#
- 1...Rc4
- 2.Rd8#
- 2.bxc4#
- 1...Sg3
- 2.Be6#
- 2.Rd8#
- 1...Sf4
- 2.Be4#
- 2.Rd8#
- 1...Sg7
- 2.Be4#
- 2.Rd8#
- 1...Sxf6!
- threat
- 1.Rc4?
- threat
- 2.Sb4#
- 1...Rxc4
- 2.bxc4#
- 1...Qe1
- 2.Qxc5#
- 1...Qd2
- 2.Qxc5#
- 1...Rb5!
- threat
- 1.Rd4+?
- 1...Kxd4
- 2.Qxc5#
- 1...Rxd4
- 2.Qxc5#
- 1...Qxd4!
- 1...Kxd4
- 1.Rd8+?
- 1...Sd7
- 2.Rxd7#
- 1...Kxe5!
- 1...Sd7
- 1.c3?
- threat
- 2.Sb4#
- 1...Qxf5
- 2.Qxc5#
- 1...Qh4
- 2.Qxc5#
- 1...Qf4
- 2.Qxc5#
- 1...Rd4
- 2.Qxc5#
- 1...Rc4
- 2.bxc4#
- 1...Rb5
- 2.c4#
- 1...Qd4!
- threat
- 1.c4+?
- 1...Rxc4
- 2.bxc4#
- 1...Kd4!
- 1...Rxc4
- 1.cxb8Q?
- threat
- 2.Sc7#
- 2.Be6#
- 2.Qd6#
- 1...Qxf5
- 2.Sc7#
- 2.Qxc5#
- 2.Qd6#
- 1...Rxa5
- 2.Sb4#
- 2.Qd6#
- 1...Rxc6
- 2.Sb4#
- 1...Qd4
- 2.Sc7#
- 2.Qd6#
- 1...Rd4
- 2.Sc7#
- 2.Qxc5#
- 2.Qd6#
- 1...Rc4
- 2.Sc7#
- 2.Qd6#
- 2.bxc4#
- 1...Sf4
- 2.Sc7#
- 2.Qd6#
- 1...Sg7
- 2.Sc7#
- 2.Qd6#
- 1...Se4
- 2.Sc7#
- 1...Sg4
- 2.Sc7#
- 2.Rd8#
- 2.Qd6#
- 2.Qd7#
- 2.Qd8#
- 1...Sd7
- 2.Sc7#
- 2.Qd6#
- 2.Qxd7#
- 1...Sh7
- 2.Sc7#
- 2.Rd8#
- 2.Qd6#
- 2.Qd7#
- 2.Qd8#
- 1...Sg8
- 2.Sc7#
- 2.Rd8#
- 2.Qd6#
- 2.Qd7#
- 2.Qd8#
- 1...Sxe8!
- threat
- 1.cxb8S?
- threat
- 2.Sc7#
- 1...Rxc6
- 2.Sb4#
- 1...Sxe8!
- threat
- 1.cxb8B?
- threat
- 2.Sc7#
- 2.Be6#
- 1...Qxf5
- 2.Sc7#
- 2.Qxc5#
- 1...Rxa5
- 2.Sb4#
- 1...Rxc6
- 2.Sb4#
- 1...Qd4
- 2.Sc7#
- 1...Rd4
- 2.Sc7#
- 2.Qxc5#
- 1...Rc4
- 2.Sc7#
- 2.bxc4#
- 1...Sf4
- 2.Sc7#
- 1...Sg7
- 2.Sc7#
- 1...Se4
- 2.Sc7#
- 1...Sg4
- 2.Sc7#
- 2.Rd8#
- 2.Qd7#
- 1...Sd7
- 2.Sc7#
- 2.Qxd7#
- 1...Sh7
- 2.Sc7#
- 2.Rd8#
- 2.Qd7#
- 1...Sg8
- 2.Sc7#
- 2.Rd8#
- 2.Qd7#
- 1...Sxe8!
- threat
- 1.cxb8R?
- threat
- 2.Sc7#
- 1...Rxa5
- 2.Sb4#
- 1...Rxc6
- 2.Sb4#
- 1...Sxe8!
- threat
- 1.Bxf6?
- Keys
- 1.c8S!
- threat
- 2.Sb6#
- 1...Rxc2
- 2.Sb4#
- 1...Rxa5
- 2.Sb4#
- 1...Rxc6
- 2.Sb4#
- 1...Bxe5
- 2.Be6#
- 1...Bxa7
- 2.Sc7#
- 1...Rc3
- 2.Sb4#
- 1...Rc4
- 2.bxc4#
- 1...Rb5
- 2.c4#
- 1...Bc7
- 2.Sxc7#
- 1...Sd7
- 2.Se7#
- threat
- 1.c8S!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 15
- Sets
- Q(b);N_GUARD::QAR1(I),XR(c)
- Q(b);N_GUARD,XB(F)::QAR1(I),XR(c)
- R(a);S_CUTQ(b)::QAR1(I),XR(c)
- R(c);XP(A)::S(G)
- R(c);::S(G)
- R(c);OGATE::P(B),XR(c)
- R(c);XS(D)::S(G)
- R(c);N_GUARD::P(A)
- R(c);XP(H)::S(G)
- B(g);XP(J)::S(G),XB(g)
- S(f);N_GUARD,P_PINB(F)::R(L)
- Tries
- Try
- B(M);XS(f)
- Threat
- DUALS(3)
- Vars
- Q(b);N_GUARD,P_PINB(M),XB(F)::QAR1(I),XR(c)
- Q(b);::R(L)
- Refutation
- S(e);XB(M)
- Try
- R(C);
- Threat
- S(G)
- Vars
- R(c);OGATE,XR(C)::P(B),XR(c)
- Q(b);N_GUARD::QAR1(I),XR(c)
- Refutation
- R(c);
- Try
- R(C);CHECK
- Vars
- K(d);P-FLIGHT,P_SPINR(c),XR(C)::QAB1(I),XR(c)
- R(a);XR(C)::QAR1(I),XR(c)
- Refutation
- Q(b);XR(C)
- Try
- R(L);CHECK
- Vars
- S(f);N_GUARD,P_PINB(F),P_SPINS(f)::R(L),XS(f)
- Refutation
- K(d);P-FLIGHT,P_SPINS(f),XP(E)
- Try
- P(A);
- Threat
- S(G)
- Vars
- Q(b);N_GUARD,XB(F)::QAR1(I),XR(c)
- Q(b);N_GUARD::QAR1(I),XR(c)
- R(a);S_CUTQ(b)::QAR1(I),XR(c)
- R(c);OGATE::P(B),XR(c)
- R(c);N_GUARD::P(A)
- Refutation
- Q(b);
- Try
- P(A);CHECK
- Vars
- R(c);OGATE,XP(A)::P(B),XR(c)
- Refutation
- K(d);P-FLIGHT,P_SPINR(c)
- Try
- P(J);XB(g)
- Threat
- DUALS(3)
- Vars
- R(c);XP(H)::S(G)
- S(f);P_PINB(F)::S(G)
- Refutation
- S(f);P_PINB(F),XR(L)
- Try
- P(J);XB(g)
- Threat
- S(G)
- Vars
- R(c);XP(H)::S(G)
- Refutation
- S(f);P_PINB(F),XR(L)
- Try
- P(J);XB(g)
- Threat
- DUALS(2)
- Vars
- R(c);XS(D)::S(G)
- R(c);XP(H)::S(G)
- Q(b);::S(G)
- S(e);::S(G)
- S(f);P_PINB(F)::S(G)
- Refutation
- S(f);P_PINB(F),XR(L)
- Try
- P(J);XB(g)
- Threat
- S(G)
- Vars
- R(c);XS(D)::S(G)
- R(c);XP(H)::S(G)
- Refutation
- S(f);P_PINB(F),XR(L)
- Try
- Actual
- P(J);
- Threat
- S(J)
- Vars
- R(c);XP(A)::S(G)
- R(c);XS(D)::S(G)
- R(c);XP(H)::S(G)
- B(g);SBLOCK,XP(E)::B(F)
- B(g);N_GUARD,XQ(I)::S(G)
- R(c);::S(G)
- R(c);OGATE::P(B),XR(c)
- R(c);N_GUARD::P(A)
- B(g);N_GUARD::S(G),XB(g)
- S(f);P_PINB(F)::S(J)
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).