MESON Chess Problem Database
Problem Display
PID: 26946 (3r4/5p2/1RnN1N2/n1p1kPPb/8/p6B/P2Q4/1K6 w - - 0 1)
Blake, Percy Francis
Bradford Observer Budget, 1896
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxd6
- 2.Qe3#
- 1...Rd7
- 2.Sxd7#
- 1...Ra8
- 2.Sd7#
- 1...Rb8
- 2.Sd7#
- 1...Rc8
- 2.Sd7#
- 1...Re8
- 2.Sd7#
- 1...Rf8
- 2.Sd7#
- 1...Rg8
- 2.Sd7#
- 1...Rh8
- 2.Sd7#
- 1...Bd1
- 2.Sxf7#
- 1...Be2
- 2.Sxf7#
- 1...Bf3
- 2.Sxf7#
- 1...Bg4
- 2.Sxg4#
- 1...Bg6
- 2.Sg4#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sb7
- 2.Sc4#
- 1...Sb4
- 2.Qe3#
- 1...Sd4
- 2.Qe3#
- 2.Qh2#
- 1...Sa7
- 2.Qe3#
- 1...Se7
- 2.Qe3#
- 1...Sb8
- 2.Qe3#
- 1...c4
- 2.Rb5#
- 1...Rxd6
- Tries
- 1.Ka1?
- 1...Rxd6
- 2.Qe3#
- 1...Rd7
- 2.Sxd7#
- 1...Ra8
- 2.Sd7#
- 1...Rb8
- 2.Sd7#
- 1...Rc8
- 2.Sd7#
- 1...Re8
- 2.Sd7#
- 1...Rf8
- 2.Sd7#
- 1...Rg8
- 2.Sd7#
- 1...Rh8
- 2.Sd7#
- 1...Bd1
- 2.Sxf7#
- 1...Be2
- 2.Sxf7#
- 1...Bf3
- 2.Sxf7#
- 1...Bg4
- 2.Sxg4#
- 1...Bg6
- 2.Sg4#
- 1...Sc4
- 2.Sxc4#
- 1...Sb7
- 2.Sc4#
- 1...Sb4
- 2.Qe3#
- 1...Sd4
- 2.Qe3#
- 2.Qh2#
- 1...Sa7
- 2.Qe3#
- 1...Se7
- 2.Qe3#
- 1...Sb8
- 2.Qe3#
- 1...c4
- 2.Rb5#
- 1...Sb3+!
- 1...Rxd6
- 1.Kc1?
- 1...Rxd6
- 2.Qe3#
- 1...Rd7
- 2.Sxd7#
- 1...Ra8
- 2.Sd7#
- 1...Rb8
- 2.Sd7#
- 1...Rc8
- 2.Sd7#
- 1...Re8
- 2.Sd7#
- 1...Rf8
- 2.Sd7#
- 1...Rg8
- 2.Sd7#
- 1...Rh8
- 2.Sd7#
- 1...Bd1
- 2.Sxf7#
- 1...Be2
- 2.Sxf7#
- 1...Bf3
- 2.Sxf7#
- 1...Bg4
- 2.Sxg4#
- 1...Bg6
- 2.Sg4#
- 1...Sc4
- 2.Sxc4#
- 1...Sb7
- 2.Sc4#
- 1...Sb4
- 2.Qe3#
- 1...Sd4
- 2.Qe3#
- 2.Qh2#
- 1...Sa7
- 2.Qe3#
- 1...Se7
- 2.Qe3#
- 1...Sb8
- 2.Qe3#
- 1...c4
- 2.Rb5#
- 1...Sb3+!
- 1...Rxd6
- 1.Bg4?
- 1...Rxd6
- 2.Qe3#
- 1...Bxg4
- 2.Sxg4#
- 1...Rd7
- 2.Sxd7#
- 1...Ra8
- 2.Sd7#
- 1...Rb8
- 2.Sd7#
- 1...Rc8
- 2.Sd7#
- 1...Re8
- 2.Sd7#
- 1...Rf8
- 2.Sd7#
- 1...Rg8
- 2.Sd7#
- 1...Rh8
- 2.Sd7#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sb7
- 2.Sc4#
- 1...Sb4
- 2.Qe3#
- 1...Sd4
- 2.Qe3#
- 2.Qh2#
- 1...Sa7
- 2.Qe3#
- 1...Se7
- 2.Qe3#
- 1...Sb8
- 2.Qe3#
- 1...c4
- 2.Rb5#
- 1...Bg6!
- 1...Rxd6
- 1.Rxc6?
- threat
- 2.Rxc5#
- 2.Qe3#
- 1...Rxd6
- 2.Qe3#
- 2.Qxd6#
- 1...Sxc6
- 2.Sc4#
- 1...Rc8
- 2.Sd7#
- 2.Qe3#
- 1...Bf3
- 2.Sxf7#
- 1...Sb3
- 2.Sc4#
- 2.Qe3#
- 1...Sc4
- 2.Sxc4#
- 2.Rxc5#
- 1...Sb7
- 2.Sc4#
- 2.Qe3#
- 1...c4
- 2.Rc5#
- 2.Qe3#
- 1...Rb8+!
- threat
- 1.Ka1?
- Keys
- 1.Rb7!
- 1...Rxd6
- 2.Qe3#
- 1...Sxb7
- 2.Sc4#
- 1...Sd4
- 2.Qh2#
- 1...Sb4
- 2.Re7#
- 1...Rd7
- 2.Sxd7#
- 1...Ra8
- 2.Sd7#
- 1...Rb8
- 2.Sd7#
- 1...Rc8
- 2.Sd7#
- 1...Re8
- 2.Sd7#
- 1...Rf8
- 2.Sd7#
- 1...Rg8
- 2.Sd7#
- 1...Rh8
- 2.Sd7#
- 1...Bd1
- 2.Sxf7#
- 1...Be2
- 2.Sxf7#
- 1...Bf3
- 2.Sxf7#
- 1...Bg4
- 2.Sxg4#
- 1...Bg6
- 2.Sg4#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sa7
- 2.Re7#
- 1...Se7
- 2.Rxe7#
- 1...Sb8
- 2.Re7#
- 1...c4
- 2.Rb5#
- 1...Rxd6
- 1.Rb7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(h);SBLOCK,XS(H)::QAR2(C)
- R(h);N_GUARD::S(I),XR(h)
- R(h);N_GUARD::S(I)
- R(h);N_GUARD,P_PINR(G)::S(I)
- B(e);N_GUARD::S(H),XP(g)
- B(e);N_GUARD::S(I),XB(e)
- B(e);N_GUARD,P_PINP(E)::S(I)
- S(b);N_GUARD::S(H)
- S(b);N_GUARD::S(H),XS(b)
- S(f);::QAR2(C)
- P(c);OGATEB::R(G)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- R(h);SBLOCK,XS(H)::QAR2(C)
- R(h);N_GUARD::S(I),XR(h)
- R(h);N_GUARD::S(I)
- B(e);N_GUARD::S(H),XP(g)
- B(e);N_GUARD::S(I),XB(e)
- B(e);N_GUARD::S(I)
- S(b);N_GUARD::S(H),XS(b)
- S(b);N_GUARD::S(H)
- S(f);::QAR2(C)
- P(c);OGATEB::R(G)
- Refutation
- S(b);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- R(h);SBLOCK,XS(H)::QAR2(C)
- R(h);N_GUARD::S(I),XR(h)
- R(h);N_GUARD::S(I)
- B(e);N_GUARD::S(H),XP(g)
- B(e);N_GUARD::S(I),XB(e)
- B(e);N_GUARD::S(I)
- S(b);N_GUARD::S(H),XS(b)
- S(b);N_GUARD::S(H)
- S(f);::QAR2(C)
- P(c);OGATEB::R(G)
- Refutation
- S(b);CHECK
- Try
- B(D);
- Vars
- R(h);SBLOCK,XS(H)::QAR2(C)
- B(e);XB(D)::S(I),XB(e)
- R(h);N_GUARD::S(I),XR(h)
- R(h);N_GUARD::S(I)
- R(h);N_GUARD,P_PINR(G)::S(I)
- S(b);N_GUARD::S(H)
- S(b);N_GUARD::S(H),XS(b)
- S(f);::QAR2(C)
- P(c);OGATEB::R(G)
- Refutation
- B(e);P_PINP(E)
- Try
- R(G);XS(f)
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD,XR(G)::S(H)
- B(e);N_GUARD::S(H),XP(g)
- Refutation
- R(h);CHECK
- Try
- Actual
- R(G);
- Vars
- R(h);SBLOCK,XS(H)::QAR2(C)
- S(b);N_GUARD,XR(G)::S(H)
- S(f);SBLOCK::QAB(C)
- S(f);N_GUARD::R(G)
- R(h);N_GUARD::S(I),XR(h)
- R(h);N_GUARD::S(I)
- R(h);N_GUARD,P_PINR(G)::S(I)
- B(e);N_GUARD::S(H),XP(g)
- B(e);N_GUARD::S(I),XB(e)
- B(e);N_GUARD,P_PINP(E)::S(I)
- S(b);N_GUARD::S(H)
- S(b);N_GUARD::S(H),XS(b)
- S(f);N_GUARD::R(G),XS(f)
- P(c);OGATEB::R(G)
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).