MESON Chess Problem Database
Problem Display
PID: 42377 (4N3/1q2p3/5Rb1/4k3/4P3/8/1bN1Q2K/4R3 w - - 0 1)
Knuppert, Hugo
Comm., Leipzig Olympic Ty., 1960
#2
7 + 5
| 3749 | FIDE Album (1959-1961) | 1966 |
| 15593 | 170 Skakopgaver (Jorgensen) | 1975 |
SOLUTION
- SOUND
- Sets
- 1...Qxe4
- 2.Qb5#
- 1...Qb5
- 2.Qxb5#
- 1...Bxe4
- 2.Qh5#
- 1...Bh5
- 2.Qxh5#
- 1...Qxe4
- Tries
- 1.Qf1?
- threat
- 2.Qf4#
- 1...Qxe4
- 2.Qb5#
- 1...Bxe4
- 2.Qf5#
- 1...exf6
- 2.Qxf6#
- 1...Bf5
- 2.Qxf5#
- 1...Bc1!
- threat
- 1.Qf3?
- threat
- 2.Qg3#
- 2.Qf4#
- 1...Bxe4
- 2.Qh5#
- 2.Qf5#
- 1...Bxe8
- 2.Qf4#
- 2.Qf5#
- 1...exf6
- 2.Qxf6#
- 1...Qb3
- 2.Qf4#
- 1...Bc1
- 2.Qc3#
- 1...Bf5
- 2.Qg3#
- 2.Qxf5#
- 1...Qxe4!
- threat
- 1.Qg4?
- threat
- 2.Re6#
- 2.Qe6#
- 2.Qg3#
- 2.Qf4#
- 1...Qxe4
- 2.Qe6#
- 1...Bxe4
- 2.Qf5#
- 2.Qh5#
- 2.Qe6#
- 2.Qg5#
- 1...Bxe8
- 2.Re6#
- 2.Qf5#
- 2.Qe6#
- 2.Qf4#
- 2.Qg5#
- 1...Qd5
- 2.Qg3#
- 2.Qf4#
- 1...Qa6
- 2.Qg3#
- 2.Qf4#
- 1...Qc6
- 2.Qg3#
- 2.Qf4#
- 1...Qc8
- 2.Qg3#
- 2.Qf4#
- 1...Qb3
- 2.Qf4#
- 1...Qb6
- 2.Qg3#
- 2.Qf4#
- 1...Qd7
- 2.Qg3#
- 2.Qf4#
- 1...Bc1
- 2.Re6#
- 2.Qe6#
- 1...Bf5
- 2.Qxf5#
- 2.Qg3#
- 1...Bf7
- 2.Qf5#
- 2.Qg3#
- 2.Qf4#
- 2.Qg5#
- 1...e6
- 2.Rxe6#
- 2.Qxe6#
- 2.Qg3#
- 2.Qf4#
- 1...exf6!
- threat
- 1.Qb5+?
- 1...Qd5
- 2.Qxd5#
- 1...Qxb5!
- 1...Qd5
- 1.Qh5+?
- 1...Bf5
- 2.Qxf5#
- 1...Bxh5!
- 1...Bf5
- 1.Qd2?
- threat
- 2.Qf4#
- 1...Qxe4
- 2.Qa5#
- 1...Bxe4
- 2.Qg5#
- 1...exf6
- 2.Qd6#
- 1...Bc1
- 2.Qc3#
- 2.Qd4#
- 1...Bf5!
- threat
- 1.Qe3?
- threat
- 2.Qf4#
- 2.Qg3#
- 1...Qxe4
- 2.Qc5#
- 1...Bxe4
- 2.Qg5#
- 1...Bxe8
- 2.Qf4#
- 2.Qg5#
- 1...Qb3
- 2.Qf4#
- 1...Bc1
- 2.Qd4#
- 2.Qc3#
- 1...Bf5
- 2.Qg3#
- 1...exf6!
- threat
- 1.Qf1?
- Keys
- 1.Qf2!
- threat
- 2.Qg3#
- 2.Qf4#
- 1...Qxe4
- 2.Qc5#
- 1...Bxe4
- 2.Qf5#
- 1...Bxe8
- 2.Qf4#
- 2.Qf5#
- 1...exf6
- 2.Qxf6#
- 1...Qb3
- 2.Qf4#
- 1...Bc1
- 2.Qd4#
- 1...Bf5
- 2.Qg3#
- 2.Qxf5#
- threat
- 1.Qf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- Q(d);N_GUARD,P_SPINQ(d),XP(E)::QAR(C)
- Q(d);N_GUARD::QAR(C),XQ(d)
- B(c);N_GUARD,P_SPINB(c),XP(E)::QAR(C)
- B(c);N_GUARD::QAR(C),XB(c)
- Tries
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),XP(E)::QAR(C)
- B(c);N_GUARD,P_SPINB(c),XP(E)::QAR1(C)
- P(e);OGATE,XR(F)::QAB1(C),XP(e)
- B(c);N_GUARD::QAR1(C),XB(c)
- Refutation
- B(a);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- P(e);OGATE,XR(F)::QAB1(C),XP(e)
- Q(d);::QAB1(C)
- B(a);N_GUARD::QAB(C)
- Refutation
- Q(d);P_SPINQ(d),XP(E)
- Try
- Q(C);
- Threat
- DUALS(4)
- Vars
- Q(d);P_SPINQ(d),XP(E)::QAR1(C)
- Q(d);::QAB1(C)
- Refutation
- P(e);XR(F)
- Try
- Q(C);CHECK
- Vars
- Q(d);N_GUARD,P_SPINQ(d)::QAR1(C),XQ(d)
- Refutation
- Q(d);XQ(C)
- Try
- Q(C);CHECK
- Vars
- B(c);N_GUARD,P_SPINB(c)::QAR1(C),XB(c)
- Refutation
- B(c);XQ(C)
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),XP(E)::QAR(C)
- B(c);N_GUARD,P_SPINB(c),XP(E)::QAR2(C)
- P(e);N_GUARD,XR(F)::QAB1(C)
- Refutation
- B(c);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),XP(E)::QAR2(C)
- B(c);N_GUARD,P_SPINB(c),XP(E)::QAR2(C)
- Q(d);::QAB1(C)
- B(c);::QAB(C)
- Refutation
- P(e);XR(F)
- Try
- Actual
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),XP(E)::QAR2(C)
- B(c);N_GUARD,P_SPINB(c),XP(E)::QAR1(C)
- P(e);OGATE,XR(F)::QAB1(C),XP(e)
- Q(d);::QAB1(C)
- B(a);N_GUARD::QAB1(C)
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).