MESON Chess Problem Database
Problem Display
PID: 4934 (b3r3/4b1P1/5pK1/5RP1/BQ1BkN2/p2pP2R/N7/1n2q2n w - - 0 1)
Blake, Percy Francis
1st Prize, Liverpool Weekly Mercury, 1894-1895
#2
11 + 10
| 187 | The Chess Bouquet | 1897 |
| 15 | British Chess Magazine | 1900 |
| 15 | British Chess Magazine | 1913 |
| 81 | Chess | 1955 |
| 56 | The Problemist | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Bc5#
- 1...Qh4
- 2.Bc5#
- 1...Qd1
- 2.Bc5#
- 1...Qf1
- 2.Bc5#
- 1...Qg1
- 2.Bc5#
- 1...Qe2
- 2.Bc5#
- 1...Qxe3
- 2.Rxe3#
- 1...Rb8
- 2.Qxe7#
- 1...Rc8
- 2.Qxe7#
- 1...Rd8
- 2.Qxe7#
- 1...Rf8
- 2.Qxe7#
- 1...Rg8
- 2.Qxe7#
- 1...Rh8
- 2.Qxe7#
- 1...Bd8
- 2.Bc3#
- 1...Bc6
- 2.Bxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sd2
- 2.Sc3#
- 1...Sc3
- 2.Bc5#
- 1...d2
- 2.Bc2#
- 2.Bc5#
- 1...fxg5
- 2.Re5#
- 1...Qf2
- Tries
- 1.Sc3+?
- 1...Sxc3
- 2.Bc5#
- 1...Qxc3!
- 1...Sxc3
- 1.Bd1?
- threat
- 2.Bf3#
- 1...Qxd1
- 2.Bc5#
- 1...Qxe3
- 2.Rxe3#
- 1...Qf2
- 2.Bc5#
- 1...Qg3
- 2.Bc5#
- 1...Qf1
- 2.Bc5#
- 1...Qe2
- 2.Bc5#
- 1...Sd2
- 2.Sc3#
- 1...Sg3!
- threat
- 1.Bxf6+?
- 1...Qxb4
- 2.Re5#
- 1...Bxb4!
- 1...Qxb4
- 1.Sc3+?
- Keys
- 1.Sh5!
- 1...Qxb4
- 2.Rh4#
- 1...Qxe3
- 2.Rxe3#
- 1...Bxb4
- 2.Sxf6#
- 1...fxg5
- 2.Re5#
- 1...d2
- 2.Bc2#
- 1...Bc5
- 2.Sxf6#
- 1...Qd2
- 2.Rh4#
- 1...Qf2
- 2.Bc5#
- 1...Qc3
- 2.Rh4#
- 1...Qg3
- 2.Bc5#
- 1...Qh4
- 2.Bc5#
- 2.Rxh4#
- 1...Qc1
- 2.Rh4#
- 1...Qd1
- 2.Bc5#
- 1...Qf1
- 2.Bc5#
- 1...Qg1
- 2.Bc5#
- 1...Qe2
- 2.Bc5#
- 1...Rb8
- 2.Qxe7#
- 1...Rc8
- 2.Qxe7#
- 1...Rd8
- 2.Qxe7#
- 1...Rf8
- 2.Qxe7#
- 1...Rg8
- 2.Qxe7#
- 1...Rh8
- 2.Qxe7#
- 1...Bd6
- 2.Sxf6#
- 1...Bd8
- 2.Bc3#
- 1...Bf8
- 2.Sxf6#
- 1...Bd5
- 2.Rf4#
- 1...Bc6
- 2.Bxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sd2
- 2.Sc3#
- 1...Sc3
- 2.Bc5#
- 1...Sf2
- 2.Sg3#
- 1...Sg3
- 2.Rh4#
- 1...Qxb4
- 1.Sh5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 13
- REMOVED MATES = 1
- Sets
- Q(b);N_GUARD::QAR(E)+B(F)
- Q(b);N_GUARD,P_PINP(I)::QAR(E)+B(F)
- Q(b);OGATE,XP(B)::R1(C),XQ(b)
- R(j);N_GUARD::QAR(E),XB(h)
- R(j);N_GUARD,P_PINP(K)::QAR(E),XB(h)
- B(h);N_GUARD::QAR(E)+B(F)
- B(i);N_GUARD::B(D),XB(i)
- B(i);N_GUARD::QAB(E),XB(i)
- S(a);N_GUARD,S_CUTQ(b)::S(A)
- S(a);S_CUTQ(b)::QAR(E)+B(F)
- P(g);N_GUARD,XP(I)::R1(H)
- Tries
- Try
- S(A);CHECK
- Vars
- S(a);XS(A)::QAR(E)+B(F)
- Refutation
- Q(b);XS(A)
- Try
- B(D);
- Threat
- B(D)
- Vars
- Q(b);N_GUARD,XB(D)::QAR(E)+B(F)
- Q(b);OGATE,XP(B)::R1(C),XQ(b)
- Q(b);N_GUARD::QAR(E)+B(F)
- Q(b);N_GUARD,P_PINP(I)::QAR(E)+B(F)
- S(a);N_GUARD,S_CUTQ(b)::S(A)
- Refutation
- S(c);
- Try
- B(F);CHECK,XP(g)
- Vars
- Q(b);XQ(E)::R1(H)
- Refutation
- B(h);XQ(E)
- Try
- Actual
- S(G);
- Vars
- Q(b);N_GUARD,XQ(E)::R(C)
- Q(b);OGATE,XP(B)::R1(C),XQ(b)
- B(h);N_GUARD,XQ(E)::S(G),XP(g)
- P(g);N_GUARD,XP(I)::R1(H)
- P(e);OGATEB::B(D)
- B(h);N_GUARD::S(G),XP(g)
- Q(b);N_GUARD::R(C)
- Q(b);N_GUARD::QAR(E)+B(F)
- Q(b);N_GUARD,P_PINP(I)::QAR(E)+B(F)
- R(j);N_GUARD::QAR(E),XB(h)
- R(j);N_GUARD,P_PINP(K)::QAR(E),XB(h)
- B(h);N_GUARD::QAR(E)+B(F)
- B(i);SBLOCK::R1(H)
- B(i);N_GUARD::B(D),XB(i)
- B(i);N_GUARD::QAB(E),XB(i)
- S(a);N_GUARD,S_CUTQ(b)::S(A)
- S(a);S_CUTQ(b)::QAR(E)+B(F)
- S(c);N_GUARD,S_CUTQ(b)::S(G)
- S(c);S_CUTQ(b)::R(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).