MESON Chess Problem Database
Problem Display
PID: 151448 (2K2b2/2QNp3/2R3p1/1P1k1b2/2p1p1N1/2q1P3/8/8 w - - 0 1)
Dawson, Thomas Rayner
British Chess Magazine, 1935
#2
7 + 8
| 15256 | TRD Scrapbook | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Qe5#
- 1...Qd2
- 2.Qe5#
- 1...Qb4
- 2.Qe5#
- 1...Qa5
- 2.Qe5#
- 1...Qe5
- 2.Qxe5#
- 1...Qc1
- 2.Qe5#
- 1...Qc2
- 2.Qe5#
- 1...Qa3
- 2.Qe5#
- 1...Qb3
- 2.Qe5#
- 1...Qd3
- 2.Qe5#
- 1...Qxe3
- 2.Qe5#
- 1...Be6
- 2.Rc5#
- 1...Bxd7+
- 2.Qxd7#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sb6#
- 1...Qe1
- Tries
- 1.Kb7?
- threat
- 2.Sb6#
- 1...Qxe3
- 2.Qe5#
- 1...Bxd7
- 2.Qxd7#
- 1...Qa5
- 2.Qe5#
- 1...Qd4!
- threat
- 1.Kb8?
- threat
- 2.Sb6#
- 1...Qxe3
- 2.Qe5#
- 1...Bxd7
- 2.Qxd7#
- 1...Qa5
- 2.Qe5#
- 1...Qd4!
- threat
- 1.Ra6?
- threat
- 2.Qc5#
- 2.Qc6#
- 2.Qb7#
- 1...Qxe3
- 2.Qe5#
- 1...Qd4
- 2.Qc6#
- 2.Qb7#
- 1...Qb4
- 2.Qe5#
- 2.Qc6#
- 2.Qb7#
- 1...Qf6
- 2.Qc5#
- 1...Qa3
- 2.Qe5#
- 2.Qc6#
- 2.Qb7#
- 1...e5
- 2.Sf6#
- 2.Qc6#
- 2.Qb7#
- 1...e6
- 2.Sb6#
- 2.Qc6#
- 2.Qb7#
- 1...Bxd7+!
- threat
- 1.Rb6?
- threat
- 2.Qc5#
- 2.Qc6#
- 2.Qb7#
- 1...Qxe3
- 2.Qe5#
- 1...Qd4
- 2.Qc6#
- 2.Qb7#
- 1...Qb4
- 2.Qe5#
- 2.Qc6#
- 2.Qb7#
- 1...Qf6
- 2.Qc5#
- 1...Qa3
- 2.Qe5#
- 2.Qc6#
- 2.Qb7#
- 1...e5
- 2.Sf6#
- 2.Qc6#
- 2.Qb7#
- 1...e6
- 2.Qc6#
- 2.Qb7#
- 1...Bxd7+!
- threat
- 1.Re6?
- threat
- 2.Qc6#
- 1...Qxe3
- 2.Qe5#
- 1...Kxe6!
- threat
- 1.Qb7?
- threat
- 2.Ra6#
- 2.Rb6#
- 2.Rf6#
- 2.Rxg6#
- 1...Bxd7+
- 2.Qxd7#
- 1...Qf6
- 2.Rxf6#
- 1...Be6
- 2.Ra6#
- 2.Rb6#
- 1...g5
- 2.Ra6#
- 2.Rb6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...e6
- 2.Sb6#
- 2.Ra6#
- 2.Rb6#
- 1...Qxe3!
- threat
- 1.Kb7?
- Keys
- 1.Qa7!
- threat
- 2.Qc5#
- 1...Bxd7+
- 2.Qxd7#
- 1...Qxe3
- 2.Sxe3#
- 1...Qd4
- 2.Qxd4#
- 1...Qb4
- 2.Qd4#
- 1...Qa3
- 2.Qd4#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sb6#
- threat
- 1.Qa7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- Q(a);N_GUARD::QAR1(E)
- Q(a);N_GUARD::QAR1(E),XQ(a)
- Q(a);N_GUARD,XP(A)::QAR1(E)
- B(e);SBLOCK::R1(D)
- B(e);CHECK,OGATE,XS(F)::QAR2(E),XB(e)
- P(g);N_GUARD,S_CUTQ(a)::S(B)
- P(g);N_PINS(F)::S(F)
- Tries
- Try
- K(G);N_SPINS(F),S_FLIGHT
- Threat
- S(F)
- Vars
- Q(a);N_GUARD,XP(A)::QAR1(E)
- B(e);OGATE,XS(F)::QAR2(E),XB(e)
- Q(a);N_GUARD::QAR1(E)
- Refutation
- Q(a);
- Try
- K(G);N_SPINS(F),P-FLIGHT
- Threat
- S(F)
- Vars
- Q(a);N_GUARD,XP(A)::QAR1(E)
- B(e);OGATE,XS(F)::QAR2(E),XB(e)
- Q(a);N_GUARD::QAR1(E)
- Refutation
- Q(a);
- Try
- R(D);
- Threat
- DUALS(3)
- Vars
- Q(a);N_GUARD,XP(A)::QAR1(E)
- Q(a);::QAR1(E)
- Refutation
- B(e);CHECK,XS(F)
- Try
- R(D);
- Threat
- DUALS(3)
- Vars
- Q(a);N_GUARD,XP(A)::QAR1(E)
- Q(a);::QAR1(E)
- Refutation
- B(e);CHECK,XS(F)
- Try
- R(D);N_SPINS(F)
- Threat
- QAB1(E)
- Vars
- Q(a);N_GUARD,XP(A)::QAR1(E)
- Refutation
- K(d);S_FLIGHT,XR(D)
- Try
- Q(E);
- Threat
- DUALS(4)
- Vars
- B(e);CHECK,OGATE,XS(F)::QAR2(E),XB(e)
- Q(a);::QAB(E)+R(D),XQ(a)
- Refutation
- Q(a);XP(A)
- Try
- Actual
- Q(E);
- Threat
- QAR1(E)
- Vars
- B(e);CHECK,OGATE,XS(F)::QAR2(E),XB(e)
- Q(a);XP(A)::S(B),XQ(a)
- Q(a);N_GUARD::QAR1(E),XQ(a)
- Q(a);N_GUARD::QAR1(E)
- P(g);N_GUARD,S_CUTQ(a)::S(B)
- P(g);N_PINS(F)::S(F)
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).