MESON Chess Problem Database
Problem Display
PID: 18998 (8/n2NQ3/q7/1p1kB1p1/p1R2b1r/4nr2/K3B3/8 w - - 0 1)
Blake, Percy Francis
2nd Prize, Hampstead and Highgate Express, 1910-1911
#2
6 + 10
| 3360 | Simple Two-move Themes | 1924 |
| 56 | The Problemist | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qb7
- 2.Sf6#
- 2.Qd6#
- 2.Qf7#
- 1...Qc8
- 2.Sb6#
- 2.Sf6#
- 2.Qd6#
- 2.Qf7#
- 1...Qa5
- 2.Sf6#
- 2.Qd6#
- 2.Qf7#
- 1...Qb6
- 2.Sxb6#
- 1...Qc6
- 2.Rd4#
- 1...Qd6
- 2.Qxd6#
- 1...Qe6
- 2.Qc5#
- 1...Qf6
- 2.Sxf6#
- 1...Bxe5
- 2.Qxe5#
- 1...Sxc4
- 2.Bxf3#
- 1...Sc6
- 2.Sf6#
- 2.Qd6#
- 2.Qf7#
- 1...bxc4
- 2.Bxf3#
- 1...Qb7
- Tries
- 1.Sf8?
- threat
- 2.Qc5#
- 1...Sxc4
- 2.Bxf3#
- 1...bxc4
- 2.Bxf3#
- 1...Qc8
- 2.Qd6#
- 1...Qc6
- 2.Rd4#
- 1...Qd6
- 2.Qxd6#
- 1...Qb6!
- threat
- 1.Ba1?
- threat
- 2.Rc5#
- 1...Sxc4
- 2.Bxf3#
- 1...bxc4
- 2.Bxf3#
- 1...Qb6
- 2.Sxb6#
- 1...Qc8
- 2.Sb6#
- 2.Sf6#
- 1...Qc6
- 2.Rd4#
- 1...Qd6
- 2.Qe4#
- 1...Qe6
- 2.Qc5#
- 1...Be5
- 2.Qxe5#
- 1...Bd6!
- threat
- 1.Bb2?
- threat
- 2.Rc5#
- 1...Sxc4
- 2.Bxf3#
- 1...bxc4
- 2.Bxf3#
- 1...Qb6
- 2.Sxb6#
- 1...Qc8
- 2.Sb6#
- 2.Sf6#
- 1...Qc6
- 2.Rd4#
- 1...Qd6
- 2.Qe4#
- 1...Qe6
- 2.Qc5#
- 1...Be5
- 2.Qxe5#
- 1...Bd6!
- threat
- 1.Bc3?
- threat
- 2.Rc5#
- 1...Sxc4
- 2.Bxf3#
- 1...bxc4
- 2.Bxf3#
- 1...Qb6
- 2.Sxb6#
- 1...Qc8
- 2.Sb6#
- 2.Sf6#
- 1...Qc6
- 2.Rd4#
- 1...Qd6
- 2.Qe4#
- 1...Qe6
- 2.Qc5#
- 1...Be5
- 2.Qxe5#
- 1...Bd6!
- threat
- 1.Bg7?
- threat
- 2.Rc5#
- 1...Sxc4
- 2.Bxf3#
- 1...bxc4
- 2.Bxf3#
- 1...Qb6
- 2.Sxb6#
- 1...Qc8
- 2.Sb6#
- 2.Sf6#
- 1...Qc6
- 2.Rd4#
- 1...Qd6
- 2.Qe4#
- 1...Qe6
- 2.Qc5#
- 1...Qf6
- 2.Sxf6#
- 1...Be5
- 2.Qxe5#
- 1...Bd6!
- threat
- 1.Sf8?
- Keys
- 1.Bf6!
- threat
- 2.Rc5#
- 1...Qxf6
- 2.Sxf6#
- 1...Sxc4
- 2.Bxf3#
- 1...bxc4
- 2.Bxf3#
- 1...Qb6
- 2.Sxb6#
- 1...Qc8
- 2.Sb6#
- 1...Qc6
- 2.Rd4#
- 1...Qd6
- 2.Qe4#
- 1...Qe6
- 2.Qc5#
- 1...Be5
- 2.Qxe5#
- 1...Bd6
- 2.Qf7#
- threat
- 1.Bf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(i);N_GUARD::S(E),XQ(i)
- Q(i);SBLOCK::R1(C)
- Q(i);N_GUARD::QAR1(F),XQ(i)
- Q(i);SBLOCK::QAR1(F)
- B(d);OGATE,XB(D)::QAR1(F),XB(d)
- S(a);SBLOCK,XR(C)::B(B),XR(b)
- P(f);SBLOCK,XR(C)::B(B),XR(b)
- Tries
- Try
- S(E);
- Threat
- QAR1(F)
- Vars
- S(a);SBLOCK,XR(C)::B(B),XR(b)
- P(f);SBLOCK,XR(C)::B(B),XR(b)
- Q(i);N_GUARD::QAR1(F)
- Q(i);SBLOCK::R1(C)
- Q(i);N_GUARD::QAR1(F),XQ(i)
- Refutation
- Q(i);
- Try
- B(D);
- Threat
- R1(C)
- Vars
- S(a);SBLOCK,XR(C)::B(B),XR(b)
- P(f);SBLOCK,XR(C)::B(B),XR(b)
- Q(i);N_GUARD::S(E),XQ(i)
- Q(i);SBLOCK::R1(C)
- Q(i);SBLOCK::QAB1(F)
- Q(i);SBLOCK::QAR1(F)
- B(d);N_GUARD::QAR1(F),XB(d)
- Refutation
- B(d);
- Try
- B(D);
- Threat
- R1(C)
- Vars
- S(a);SBLOCK,XR(C)::B(B),XR(b)
- P(f);SBLOCK,XR(C)::B(B),XR(b)
- Q(i);N_GUARD::S(E),XQ(i)
- Q(i);SBLOCK::R1(C)
- Q(i);SBLOCK::QAB1(F)
- Q(i);SBLOCK::QAR1(F)
- B(d);N_GUARD::QAR1(F),XB(d)
- Refutation
- B(d);
- Try
- B(D);
- Threat
- R1(C)
- Vars
- S(a);SBLOCK,XR(C)::B(B),XR(b)
- P(f);SBLOCK,XR(C)::B(B),XR(b)
- Q(i);N_GUARD::S(E),XQ(i)
- Q(i);SBLOCK::R1(C)
- Q(i);SBLOCK::QAB1(F)
- Q(i);SBLOCK::QAR1(F)
- B(d);N_GUARD::QAR1(F),XB(d)
- Refutation
- B(d);
- Try
- B(D);
- Threat
- R1(C)
- Vars
- S(a);SBLOCK,XR(C)::B(B),XR(b)
- P(f);SBLOCK,XR(C)::B(B),XR(b)
- Q(i);N_GUARD::S(E),XQ(i)
- Q(i);SBLOCK::R1(C)
- Q(i);SBLOCK::QAB1(F)
- Q(i);SBLOCK::QAR1(F)
- B(d);N_GUARD::QAR1(F),XB(d)
- Refutation
- B(d);
- Try
- Actual
- B(D);
- Threat
- R1(C)
- Vars
- Q(i);XB(D)::S(E),XQ(i)
- S(a);SBLOCK,XR(C)::B(B),XR(b)
- P(f);SBLOCK,XR(C)::B(B),XR(b)
- Q(i);N_GUARD::S(E),XQ(i)
- Q(i);N_GUARD::S(E)
- Q(i);SBLOCK::R1(C)
- Q(i);SBLOCK::QAB1(F)
- Q(i);SBLOCK::QAR1(F)
- B(d);N_GUARD::QAR1(F),XB(d)
- B(d);SBLOCK,S_CUTQ(i)::QAB(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).