MESON Chess Problem Database
Problem Display
PID: 251667 (1qrR1Nb1/1r1pp1K1/1pB3N1/6R1/1p1k1B2/1P1p1P2/1P5p/2Qn4 w - - 0 1)
Leibovici, Paul
Jerusalem Post, 1952
(First published on Fri Aug 29 1952)
#2
11 + 12
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxf4
- 2.Qxf4#
- 1...Qe5+
- 2.Bxe5#
- 1...Qa7
- 2.Be5#
- 1...Qa8
- 2.Be5#
- 1...Rbc7
- 2.Be5#
- 1...Rcc7
- 2.Be5#
- 1...Bc4
- 2.Qxc4#
- 1...Bd5
- 2.Rxd5#
- 1...Be6
- 2.Sxe6#
- 1...Bh7
- 2.Se6#
- 2.Rd5#
- 2.Qc4#
- 1...Sxb2
- 2.Be3#
- 2.Qxb2#
- 1...Sf2
- 2.Be3#
- 2.Qe3#
- 1...Sc3
- 2.Be3#
- 2.Qe3#
- 1...Se3
- 2.Bxe3#
- 2.Qxe3#
- 1...d2
- 2.Qxd2#
- 1...b5
- 2.Qc5#
- 1...d5
- 2.Qc4#
- 1...d6
- 2.Be5#
- 1...e6
- 2.Qc4#
- 1...Qxf4
- Tries
- 1.Kxg8?
- threat
- 2.Se6#
- 2.Rd5#
- 2.Qc4#
- 1...Qxf4
- 2.Se6#
- 2.Rd5#
- 2.Qxf4#
- 1...Rxd8
- 2.Rd5#
- 2.Qc4#
- 1...Sxb2
- 2.Se6#
- 2.Be3#
- 2.Rd5#
- 2.Qxb2#
- 1...d2
- 2.Rd5#
- 2.Qxd2#
- 2.Qc4#
- 1...Qe5
- 2.Bxe5#
- 2.Qc4#
- 1...Qd6
- 2.Qc4#
- 1...Sc3
- 2.Se6#
- 2.Be3#
- 2.Qe3#
- 1...Se3
- 2.Se6#
- 2.Bxe3#
- 2.Qxe3#
- 1...b5
- 2.Se6#
- 2.Rd5#
- 2.Qc5#
- 1...d5
- 2.Se6#
- 2.Rgxd5#
- 2.Rdxd5#
- 2.Qc4#
- 1...e5
- 2.Se6#
- 2.Qc4#
- 1...e6
- 2.Sxe6#
- 2.Qc4#
- 1...Rxc6!
- threat
- 1.Sh4?
- threat
- 2.Sf5#
- 1...Qe5+
- 2.Bxe5#
- 1...Qxf4
- 2.Qxf4#
- 1...d2
- 2.Qxd2#
- 1...Bc4
- 2.Qxc4#
- 1...Be6
- 2.Sxe6#
- 1...Bh7
- 2.Se6#
- 2.Rd5#
- 2.Qc4#
- 1...Sc3
- 2.Be3#
- 2.Qe3#
- 1...Se3
- 2.Bxe3#
- 2.Qxe3#
- 1...e6
- 2.Qc4#
- 1...Rxc6!
- threat
- 1.Bxb8?
- threat
- 2.Be5#
- 2.Rg4#
- 2.Qf4#
- 1...Rbxb8
- 2.Rg4#
- 2.Qf4#
- 1...Rxc6
- 2.Qf4#
- 1...Rcxb8
- 2.Rg4#
- 2.Qf4#
- 1...Sxb2
- 2.Be5#
- 2.Rg4#
- 1...d2
- 2.Qxd2#
- 1...Sf2
- 2.Be5#
- 1...Rbc7
- 2.Rg4#
- 2.Qf4#
- 1...Rcc7
- 2.Rg4#
- 2.Qf4#
- 1...Bc4
- 2.Qf4#
- 1...Bd5
- 2.Be5#
- 2.Rxd5#
- 1...Be6
- 2.Sxe6#
- 2.Be5#
- 2.Qf4#
- 1...Se3
- 2.Be5#
- 1...d5
- 2.Be5#
- 2.Rg4#
- 1...d6
- 2.Rg4#
- 2.Qf4#
- 1...e5
- 2.Bxe5#
- 1...Sc3!
- threat
- 1.Re5?
- threat
- 2.Re4#
- 1...Qxe5+
- 2.Bxe5#
- 1...d2
- 2.Qxd2#
- 1...Sf2
- 2.Be3#
- 2.Qe3#
- 1...Bc4
- 2.Qxc4#
- 1...Bd5
- 2.Rxd5#
- 1...Sc3
- 2.Be3#
- 2.Qe3#
- 1...Rxc6!
- threat
- 1.Rxd7+?
- 1...Qd6
- 2.Be5#
- 1...Bd5
- 2.Se6#
- 2.Rgxd5#
- 2.Rdxd5#
- 2.Qc4#
- 1...Rxd7!
- 1...Qd6
- 1.Kxg8?
- Keys
- 1.Sxe7!
- threat
- 2.Sf5#
- 1...Qe5+
- 2.Bxe5#
- 1...Qxf4
- 2.Qxf4#
- 1...Rxc6
- 2.Sxc6#
- 1...d2
- 2.Qxd2#
- 1...Bc4
- 2.Qxc4#
- 1...Be6
- 2.Sxe6#
- 1...Bh7
- 2.Se6#
- 2.Rd5#
- 2.Qc4#
- 1...Sc3
- 2.Be3#
- 2.Qe3#
- 1...Se3
- 2.Bxe3#
- 2.Qxe3#
- 1...d5
- 2.Qc4#
- 1...d6
- 2.Be5#
- threat
- 1.Sxe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(j);OGATE,XB(E)::QAR2(A),XQ(j)
- Q(j);CHECK,N_GUARD::B(E),XQ(j)
- Q(j);N_GUARD::B(E)
- R(g);S_CUTQ(j)::B(E)
- R(k);S_CUTQ(j)::B(E)
- B(l);N_GUARD::QAR1(A),XB(l)
- B(l);N_GUARD,N_SPINP(h)::R1(F),XB(l)
- B(l);N_GUARD::S(K),XB(l)
- P(c);OGATEB::QAR2(A),XP(c)
- P(f);N_GUARD::QAB1(A)
- P(h);S_CUTB(l)::QAR1(A)
- P(h);S_CUTQ(j)::B(E)
- P(i);S_CUTB(l)::QAR1(A)
- Tries
- Try
- K(I);P-FLIGHT,XB(l)
- Threat
- DUALS(3)
- Vars
- Q(j);N_SPINP(h)::QAR1(A)
- Refutation
- R(k);XB(G)
- Try
- S(H);
- Threat
- S(H)
- Vars
- Q(j);CHECK,N_GUARD::B(E),XQ(j)
- Q(j);OGATE,XB(E)::QAR2(A),XQ(j)
- P(c);OGATEB::QAR2(A),XP(c)
- B(l);N_GUARD::QAR1(A),XB(l)
- B(l);N_GUARD::S(K),XB(l)
- P(i);S_CUTB(l)::QAR1(A)
- Refutation
- R(k);XB(G)
- Try
- B(E);XQ(j)
- Threat
- DUALS(3)
- Vars
- R(k);XB(G)::QAR2(A)
- P(c);OGATEB::QAR2(A),XP(c)
- S(a);::B(E)
- B(l);::QAR2(A)
- P(i);::B(E),XP(i)
- Refutation
- S(a);
- Try
- R(F);
- Threat
- R1(F)
- Vars
- Q(j);CHECK,OGATE,XR(F)::B(E),XQ(j)
- P(c);OGATEB::QAR2(A),XP(c)
- B(l);N_GUARD::QAR1(A),XB(l)
- B(l);N_GUARD,N_SPINP(h)::R1(F),XB(l)
- Refutation
- R(k);XB(G)
- Try
- R(J);CHECK,XP(h)
- Vars
- Q(j);P_SPINQ(j)::B(E)
- Refutation
- R(g);XR(J)
- Try
- Actual
- S(H);XP(i)
- Threat
- S(H)
- Vars
- Q(j);CHECK,N_GUARD::B(E),XQ(j)
- Q(j);OGATE,XB(E)::QAR2(A),XQ(j)
- R(k);XB(G)::S(H),XR(k)
- P(c);OGATEB::QAR2(A),XP(c)
- B(l);N_GUARD::QAR1(A),XB(l)
- B(l);N_GUARD::S(K),XB(l)
- P(h);P_PINS(H),S_CUTB(l)::QAR1(A)
- P(h);P_PINS(H),S_CUTQ(j)::B(E)
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).