MESON Chess Problem Database
Problem Display
PID: 9491 (b7/2p2N1n/2n3p1/5k2/1rp2pNR/7Q/2P5/1B2R1K1 w - - 0 1)
Blake, Percy Francis
2nd Prize, Manchester Weekly Times, 1901-1903
#2
8 + 9
| 563 | Liverpool Courier | 1913 |
SOLUTION
- SOUND
- Sets
- 1...Rb3
- 2.cxb3#
- 1...Ra4
- 2.c3#
- 1...Sd4
- 2.Re5#
- 1...Sa5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sa7
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sd8
- 2.Re5#
- 1...Sg5
- 2.Sfh6#
- 1...Sf6
- 2.Sgh6#
- 1...f3
- 2.Qxf3#
- 1...Rb3
- Tries
- 1.Qg2?
- threat
- 2.Qe4#
- 1...Se5
- 2.Rxe5#
- 1...f3
- 2.Qxf3#
- 1...Sd4
- 2.Re5#
- 1...Sa5
- 2.Re5#
- 1...Sa7
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sd8
- 2.Re5#
- 1...Sg5
- 2.Sfh6#
- 1...Sf6
- 2.Sgh6#
- 1...c3!
- threat
- 1.Qh1?
- threat
- 2.Qe4#
- 1...Se5
- 2.Rxe5#
- 1...f3
- 2.Qxf3#
- 1...Sd4
- 2.Re5#
- 1...Sa5
- 2.Re5#
- 1...Sa7
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sd8
- 2.Re5#
- 1...Sg5
- 2.Sfh6#
- 1...Sf6
- 2.Sgh6#
- 1...c3!
- threat
- 1.Qc3?
- threat
- 2.Sgh6#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...Sd4
- 2.Re5#
- 1...g5!
- threat
- 1.Qe3?
- threat
- 2.Qe4#
- 2.Qe6#
- 1...Se5
- 2.Qxe5#
- 1...c3
- 2.Qe6#
- 1...Sd4
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 2.Qe6#
- 1...Sa7
- 2.Qe5#
- 2.Qe6#
- 1...Se7
- 2.Qe5#
- 2.Qe6#
- 1...Sb8
- 2.Qe5#
- 2.Qe6#
- 1...Sd8
- 2.Qe5#
- 1...Sg5
- 2.Sfh6#
- 1...Sf6
- 2.Sgh6#
- 2.Qe6#
- 1...Sf8
- 2.Qe4#
- 1...f3
- 2.Sfh6#
- 2.Qxf3#
- 2.Qe4#
- 1...fxe3!
- threat
- 1.Qf3?
- threat
- 2.Qe4#
- 1...Se5
- 2.Rxe5#
- 1...Sd4
- 2.Re5#
- 1...Sa5
- 2.Re5#
- 1...Sa7
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sd8
- 2.Re5#
- 1...Sg5
- 2.Sfh6#
- 1...Sf6
- 2.Sgh6#
- 1...c3!
- threat
- 1.Qg2?
- Keys
- 1.Qb3!
- threat
- 2.c3#
- 1...Rxb3
- 2.cxb3#
- 1...cxb3
- 2.c4#
- 1...Se5
- 2.Rxe5#
- 1...f3
- 2.Qxf3#
- 1...c3
- 2.Qe6#
- 1...Sd4
- 2.Re5#
- 1...Sa5
- 2.Re5#
- 1...Sa7
- 2.Re5#
- 1...Se7
- 2.Re5#
- 1...Sb8
- 2.Re5#
- 1...Sd8
- 2.Re5#
- 1...Sg5
- 2.Sfh6#
- 1...Sf6
- 2.Sgh6#
- threat
- 1.Qb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(a);OGATE::B(A)+P(D),XR(a)
- R(a);N_GUARD::B(A)+P(D)
- S(e);N_GUARD::R1(B)
- S(e);N_GUARD::R1(B),XS(e)
- S(h);SBLOCK::S(H)
- S(h);SBLOCK::QAB(E)+S(F),DCHECK
- P(c);OGATEB::QAR2(E),XP(c)
- Tries
- Try
- Q(E);
- Threat
- QAB1(E)
- Vars
- S(e);N_GUARD::R1(B),XS(e)
- P(c);OGATEB::QAR2(E),XP(c)
- S(e);N_GUARD::R1(B)
- S(h);SBLOCK::S(H)
- S(h);SBLOCK::S(F)
- Refutation
- P(b);
- Try
- Q(E);
- Threat
- QAB1(E)
- Vars
- S(e);N_GUARD::R1(B),XS(e)
- P(c);OGATEB::QAR2(E),XP(c)
- S(e);N_GUARD::R1(B)
- S(h);SBLOCK::S(H)
- S(h);SBLOCK::S(F)
- Refutation
- P(b);
- Try
- Q(E);
- Threat
- S(F)
- Vars
- S(e);N_GUARD::R1(B)
- Refutation
- P(f);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- S(e);N_GUARD::QAR1(E),XS(e)
- P(b);::QAB1(E)
- S(e);N_GUARD::QAR1(E)
- S(h);SBLOCK::S(H)
- S(h);::QAB1(E)
- Refutation
- P(c);XQ(E)
- Try
- Q(E);P_PINP(c)
- Threat
- QAB1(E)
- Vars
- S(e);N_GUARD::R1(B),XS(e)
- S(e);N_GUARD::R1(B)
- S(h);SBLOCK::S(H)
- S(h);SBLOCK::S(F)
- Refutation
- P(b);
- Try
- Actual
- Q(E);
- Threat
- B(A)+P(D)
- Vars
- R(a);OGATE,XQ(E)::B(A)+P(D),XR(a)
- P(b);OGATE,XQ(E)::B(A)+P(D)
- S(e);N_GUARD::R1(B),XS(e)
- P(c);OGATEB::QAR2(E),XP(c)
- P(b);OGATE::QAB1(E)
- S(e);N_GUARD::R1(B)
- S(h);SBLOCK::S(H)
- S(h);SBLOCK::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).