MESON Chess Problem Database
Problem Display
PID: 6539 (3B1b2/6p1/r1p1K1P1/p1k2P2/pR3Q2/nn1PP3/8/8 w - - 0 1)
Lobel, Ernst
4th Prize, Leipziger Volkszeitung, 1931-1932
#2
8 + 9
| 56 | The Problemist | 1980 |
SOLUTION
- SOUND
- Sets
- 1...Rb6
- 2.Bxb6#
- 1...Ra7
- 2.Bb6#
- 1...Ra8
- 2.Bb6#
- 1...Bd6
- 2.Qxd6#
- 1...Be7
- 2.Bxe7#
- 1...Sb1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sb5
- 2.Rc4#
- 2.Qc4#
- 1...Sa1
- 2.Qd4#
- 1...Sc1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sd4+
- 2.Qxd4#
- 1...axb4
- 2.Qe5#
- 1...Rb6
- Tries
- 1.Bxa5?
- threat
- 2.Qe5#
- 1...Sd4+
- 2.Qxd4#
- 2.exd4#
- 1...Sxa5
- 2.Qd4#
- 1...Bd6
- 2.Qxd6#
- 1...Sc4
- 2.Qxc4#
- 1...Rxa5!
- threat
- 1.Bc7?
- 1...Sd4+
- 2.Qxd4#
- 1...axb4
- 2.Qe5#
- 1...Sc4
- 2.Qxc4#
- 1...Rb6
- 2.Bxb6#
- 1...Ra7
- 2.Bb6#
- 1...Ra8
- 2.Bb6#
- 1...Bd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Sb1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sb5
- 2.Rc4#
- 2.Qc4#
- 1...Sa1
- 2.Qd4#
- 1...Sc1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Be7!
- 1...Sd4+
- 1.Rxb3?
- threat
- 2.Qe5#
- 2.Qd4#
- 1...Bd6
- 2.Qxd6#
- 2.Qd4#
- 1...Sc2
- 2.Qe5#
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 2.Qd4#
- 2.d4#
- 1...Sb5
- 2.Qe5#
- 2.Qc4#
- 1...axb3!
- threat
- 1.Rc4+?
- 1...Sxc4
- 2.Qxc4#
- 1...Kb5!
- 1...Sxc4
- 1.Rb6?
- threat
- 2.Qe5#
- 1...Sd4+
- 2.Qxd4#
- 2.exd4#
- 1...Bd6
- 2.Qxd6#
- 1...Sc4
- 2.Qxc4#
- 1...Sb5
- 2.Qc4#
- 1...Rxb6!
- threat
- 1.Rb7?
- threat
- 2.Qe5#
- 1...Sd4+
- 2.Qxd4#
- 2.exd4#
- 1...Bd6
- 2.Qxd6#
- 1...Sc4
- 2.Qxc4#
- 1...Sb5
- 2.Qc4#
- 1...Rb6!
- threat
- 1.Rb8?
- threat
- 2.Qe5#
- 1...Sd4+
- 2.Qxd4#
- 2.exd4#
- 1...Bd6
- 2.Qxd6#
- 1...Sc4
- 2.Qxc4#
- 1...Sb5
- 2.Qc4#
- 1...Rb6!
- threat
- 1.Qe4?
- 1...Sd4+
- 2.Qxd4#
- 1...axb4
- 2.Qe5#
- 1...Sc4
- 2.Qxc4#
- 1...Rb6
- 2.Bxb6#
- 1...Ra7
- 2.Bb6#
- 1...Ra8
- 2.Bb6#
- 1...Be7
- 2.Bxe7#
- 1...Sb1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sb5
- 2.Rc4#
- 2.Qc4#
- 1...Sa1
- 2.Qd4#
- 1...Sc1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Bd6!
- 1...Sd4+
- 1.d4+?
- 1...Sxd4+
- 2.Qxd4#
- 1...Kxb4!
- 1...Sxd4+
- 1.f6?
- 1...Sd4+
- 2.Qxd4#
- 1...axb4
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Sc4
- 2.Qxc4#
- 1...Bd6
- 2.Qxd6#
- 1...Rb6
- 2.Bxb6#
- 1...Ra7
- 2.Bb6#
- 1...Ra8
- 2.Bb6#
- 1...Be7
- 2.Bxe7#
- 1...Sb1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sb5
- 2.Rc4#
- 2.Qc4#
- 1...Sa1
- 2.Qd4#
- 1...Sc1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...gxf6!
- 1...Sd4+
- 1.Bxa5?
- Keys
- 1.Qb8!
- 1...Sd4+
- 2.exd4#
- 1...axb4
- 2.Qe5#
- 1...Rb6
- 2.Qxb6#
- 1...Sb5
- 2.Rc4#
- 1...Ra7
- 2.Qb6#
- 1...Ra8
- 2.Qb6#
- 1...Bd6
- 2.Qxd6#
- 1...Be7
- 2.Bxe7#
- 1...Sb1
- 2.Rc4#
- 1...Sc2
- 2.Rc4#
- 1...Sc4
- 2.Rxc4#
- 1...Sa1
- 2.d4#
- 1...Sc1
- 2.d4#
- 1...Sd2
- 2.d4#
- 1...Sd4+
- 1.Qb8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 10
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD::B(H),XR(f)
- R(f);N_GUARD::B(H)
- B(i);N_GUARD::QAB1(D),XB(i)
- B(i);N_GUARD::B(H),XB(i)
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(b);N_GUARD::QAB1(D)
- S(b);CHECK,N_GUARD::QAB1(D),XS(b)
- P(d);SBLOCK,XR(C)::QAR2(D)
- Tries
- Try
- B(H);XP(d)
- Threat
- QAR2(D)
- Vars
- S(b);N_GUARD,XB(H)::QAB1(D)
- B(i);N_GUARD::QAB1(D),XB(i)
- S(a);N_GUARD::QAR1(D),XS(a)
- Refutation
- R(f);XB(H)
- Try
- B(H);
- Vars
- S(b);CHECK,N_GUARD::QAB1(D),XS(b)
- P(d);SBLOCK,XR(C)::QAR2(D)
- S(a);N_GUARD::QAR1(D),XS(a)
- R(f);N_GUARD::B(H),XR(f)
- R(f);N_GUARD::B(H)
- S(a);N_GUARD::QAR1(D)
- S(b);N_GUARD::QAB1(D)
- Refutation
- B(i);
- Try
- R(C);XS(b)
- Threat
- DUALS(2)
- Refutation
- P(c);XR(C)
- Try
- R(C);CHECK
- Vars
- S(a);OGATE,XR(C)::QAR1(D),XS(a)
- Refutation
- K(e);P-FLIGHT
- Try
- R(C);
- Threat
- QAR2(D)
- Vars
- B(i);N_GUARD::QAB1(D),XB(i)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- Refutation
- R(f);XR(C)
- Try
- R(C);
- Threat
- QAR2(D)
- Vars
- B(i);N_GUARD::QAB1(D),XB(i)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- Refutation
- R(f);
- Try
- R(C);
- Threat
- QAR2(D)
- Vars
- B(i);N_GUARD::QAB1(D),XB(i)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- Refutation
- R(f);
- Try
- Q(D);
- Vars
- S(b);CHECK,N_GUARD::QAB1(D),XS(b)
- P(d);SBLOCK,XR(C)::QAR2(D)
- S(a);N_GUARD::QAR1(D),XS(a)
- R(f);N_GUARD::B(H),XR(f)
- R(f);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- S(a);N_GUARD::QAR1(D)
- S(b);N_GUARD::QAB1(D)
- Refutation
- B(i);
- Try
- P(A);CHECK
- Vars
- S(b);CHECK,OGATE,XP(A)::QAB1(D),XS(b)
- Refutation
- K(e);S_FLIGHT,XR(C)
- Try
- P(E);
- Vars
- S(b);CHECK,N_GUARD::QAB1(D),XS(b)
- S(a);N_GUARD::QAR1(D),XS(a)
- B(i);N_GUARD::QAB1(D),XB(i)
- R(f);N_GUARD::B(H),XR(f)
- R(f);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- S(a);N_GUARD::QAR1(D)
- S(b);N_GUARD::QAB1(D)
- Refutation
- P(h);XP(E)
- Try
- Actual
- Q(D);
- Vars
- S(b);CHECK,OGATE::P(B),XS(b)
- P(d);SBLOCK,XR(C)::QAR2(D)
- R(f);N_GUARD::QAB1(D),XR(f)
- S(a);N_GUARD::R1(C)
- R(f);N_GUARD::QAB1(D)
- B(i);N_GUARD::QAB1(D),XB(i)
- B(i);N_GUARD::B(H),XB(i)
- S(a);N_GUARD::R1(C),XS(a)
- S(b);N_GUARD::P(A)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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