MESON Chess Problem Database
Problem Display
PID: 210911 (1BK5/4pPbp/4k3/8/4P3/3R2Pq/5Q2/8 w - - 0 1)
Sommer, Bruno Oswald
Deutsche Schachblatter, 1939
#2
7 + 5
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Qf5#
- 1...Qf5
- 2.Qxf5#
- 1...Qh1
- 2.Qf5#
- 1...Qh2
- 2.Qf5#
- 1...Qxg3
- 2.Qf5#
- 1...Qh4
- 2.Qf5#
- 1...Qh6
- 2.Qf5#
- 1...Ba1
- 2.f8S#
- 1...Bb2
- 2.f8S#
- 1...Bc3
- 2.f8S#
- 1...Bd4
- 2.f8S#
- 1...Be5
- 2.f8S#
- 1...Bf6
- 2.Qa2#
- 1...Bh8
- 2.f8S#
- 1...Qg2
- Tries
- 1.Ra3?
- threat
- 2.Ra6#
- 1...Qxg3
- 2.Qf5#
- 1...Qf5
- 2.Qxf5#
- 1...Bf6
- 2.Qa2#
- 1...Bd4
- 2.f8S#
- 1...Be5
- 2.f8S#
- 1...Qf1!
- threat
- 1.Rb3?
- threat
- 2.Rb6#
- 1...Qxg3
- 2.Qf5#
- 1...Qf5
- 2.Qxf5#
- 1...Bd4
- 2.f8S#
- 1...Be5
- 2.f8S#
- 1...Bf6!
- threat
- 1.Rf3?
- threat
- 2.Qb6#
- 2.Qa2#
- 1...Qxg3
- 2.Qa2#
- 1...Bf6
- 2.Qa2#
- 1...Qf1
- 2.Qb6#
- 1...Qg2
- 2.Qb6#
- 1...Qh2
- 2.Qb6#
- 1...Qh5
- 2.Qb6#
- 1...Bb2
- 2.Qb6#
- 2.f8S#
- 1...Bd4
- 2.Qa2#
- 2.f8S#
- 1...Be5
- 2.Qa2#
- 2.f8S#
- 1...Qf5!
- threat
- 1.f8Q?
- threat
- 2.Qb6#
- 2.Qa2#
- 2.Q2f7#
- 2.Q8f7#
- 2.Qg8#
- 1...Qxg3
- 2.Qa2#
- 2.Q2f5#
- 2.Q2f7#
- 2.Q8f5#
- 2.Q8f7#
- 2.Qg8#
- 1...Qf1
- 2.Qb6#
- 2.Qa2#
- 2.Q8f5#
- 2.Q8f7#
- 2.Qg8#
- 1...Qg2
- 2.Qb6#
- 2.Q2f5#
- 2.Q2f7#
- 2.Q8f5#
- 2.Q8f7#
- 2.Qg8#
- 1...Qf5
- 2.Qb6#
- 2.Q2xf5#
- 2.Q8xf5#
- 2.exf5#
- 1...Qh2
- 2.Qb6#
- 2.Q2f5#
- 2.Q2f7#
- 2.Q8f5#
- 2.Q8f7#
- 2.Qg8#
- 1...Qh5
- 2.Qb6#
- 1...Bb2
- 2.Qb6#
- 2.Q2f7#
- 2.Q8f7#
- 2.Qg8#
- 1...Bd4
- 2.Qa2#
- 2.Q2f7#
- 2.Q8f7#
- 2.Qg8#
- 1...Be5
- 2.Qa2#
- 2.Q2f7#
- 2.Q8f7#
- 2.Qg8#
- 1...Bf6
- 2.Qb6#
- 2.Qa2#
- 2.Qg8#
- 1...Bxf8!
- threat
- 1.f8R?
- threat
- 2.Qb6#
- 2.Qa2#
- 2.Qf7#
- 1...Qxg3
- 2.Qa2#
- 2.Qf5#
- 2.Qf7#
- 1...Qf1
- 2.Qb6#
- 2.Qa2#
- 1...Qg2
- 2.Qb6#
- 2.Qf5#
- 2.Qf7#
- 1...Qf5
- 2.Qb6#
- 2.Qxf5#
- 2.exf5#
- 1...Qh2
- 2.Qb6#
- 2.Qf5#
- 2.Qf7#
- 1...Qh5
- 2.Qb6#
- 1...Bb2
- 2.Qb6#
- 2.Qf7#
- 1...Bd4
- 2.Qa2#
- 2.Qf7#
- 1...Be5
- 2.Qa2#
- 2.Qf7#
- 1...Bf6
- 2.Qb6#
- 2.Qa2#
- 1...Bxf8!
- threat
- 1.Ra3?
- Keys
- 1.Rc3!
- threat
- 2.Rc6#
- 1...Qxg3
- 2.Qf5#
- 1...Bxc3
- 2.f8S#
- 1...Qf5
- 2.Qxf5#
- 1...Bf6
- 2.Qa2#
- 1...Be5
- 2.f8S#
- threat
- 1.Rc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- Q(a);N_GUARD::QAB1(A)
- Q(a);N_GUARD::QAB1(A),XQ(a)
- Q(a);N_GUARD,XP(C)::QAB1(A)
- B(d);N_GUARD::P=S
- B(d);SBLOCK::QAB(A)
- Tries
- Try
- R(B);
- Threat
- R(B)
- Vars
- Q(a);N_GUARD,XP(C)::QAB1(A)
- Q(a);N_GUARD::QAB1(A),XQ(a)
- B(d);SBLOCK::QAB(A)
- B(d);N_GUARD::P=S
- Refutation
- Q(a);
- Try
- R(B);
- Threat
- R(B)
- Vars
- Q(a);N_GUARD,XP(C)::QAB1(A)
- Q(a);N_GUARD::QAB1(A),XQ(a)
- B(d);N_GUARD::P=S
- Refutation
- B(d);
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- Q(a);XP(C)::QAB(A)
- B(d);::QAB(A)
- Q(a);::QAR(A)
- Refutation
- Q(a);
- Try
- P(E);
- Threat
- DUALS(5)
- Vars
- Q(a);::QAR(A)
- Refutation
- B(d);XQ(E)
- Try
- P(E);
- Threat
- DUALS(3)
- Vars
- Q(a);::QAR(A)
- Refutation
- B(d);XR(E)
- Try
- Actual
- R(B);
- Threat
- R(B)
- Vars
- Q(a);N_GUARD,XP(C)::QAB1(A)
- B(d);N_GUARD,XR(B)::P=S
- Q(a);N_GUARD::QAB1(A),XQ(a)
- B(d);SBLOCK::QAB(A)
- B(d);N_GUARD::P=S
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).