MESON Chess Problem Database
Problem Display
PID: 4940 (2r1BBb1/8/NnP3p1/3k2P1/1R1NpPQ1/7K/6P1/8 w - - 0 1)
Blake, Percy Francis
New Weekly, 1894
#2
11 + 6
SOLUTION
- SOUND
- Sets
- 1...Rxc6
- 2.Bxc6#
- 1...Rc7
- 2.Sxc7#
- 1...Ra8
- 2.Sc7#
- 1...Rb8
- 2.Sc7#
- 1...Rd8
- 2.Sc7#
- 1...Rxe8
- 2.Sc7#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 2.Qe6#
- 1...Sa4
- 2.Qd7#
- 1...Sd7
- 2.Qxd7#
- 1...Sa8
- 2.Qd7#
- 1...e3
- 2.Qf3#
- 1...Rxc6
- Tries
- 1.Kh2?
- 1...Rxc6
- 2.Bxc6#
- 1...Rxe8
- 2.Sc7#
- 1...e3
- 2.Qf3#
- 1...Rc7
- 2.Sxc7#
- 1...Ra8
- 2.Sc7#
- 1...Rb8
- 2.Sc7#
- 1...Rd8
- 2.Sc7#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 2.Qe6#
- 1...Sa4
- 2.Qd7#
- 1...Sd7
- 2.Qxd7#
- 1...Sa8
- 2.Qd7#
- 1...Sc4!
- 1...Rxc6
- 1.Kg3?
- 1...Rxc6
- 2.Bxc6#
- 1...Rxe8
- 2.Sc7#
- 1...e3
- 2.Qf3#
- 1...Rc7
- 2.Sxc7#
- 1...Ra8
- 2.Sc7#
- 1...Rb8
- 2.Sc7#
- 1...Rd8
- 2.Sc7#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 2.Qe6#
- 1...Sa4
- 2.Qd7#
- 1...Sd7
- 2.Qxd7#
- 1...Sa8
- 2.Qd7#
- 1...Sc4!
- 1...Rxc6
- 1.Kh4?
- 1...Rxc6
- 2.Bxc6#
- 1...Rxe8
- 2.Sc7#
- 1...e3
- 2.Qf3#
- 1...Rc7
- 2.Sxc7#
- 1...Ra8
- 2.Sc7#
- 1...Rb8
- 2.Sc7#
- 1...Rd8
- 2.Sc7#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 2.Qe6#
- 1...Sa4
- 2.Qd7#
- 1...Sd7
- 2.Qxd7#
- 1...Sa8
- 2.Qd7#
- 1...Sc4!
- 1...Rxc6
- 1.Sc2?
- threat
- 2.Se3#
- 2.Rd4#
- 1...Sd7
- 2.Qxd7#
- 1...Sc4
- 2.Rb5#
- 1...e3
- 2.Sxe3#
- 2.Rd4#
- 1...Rxe8!
- threat
- 1.Se2?
- threat
- 2.Sc3#
- 2.Rd4#
- 1...Rxc6
- 2.Rd4#
- 1...Sd7
- 2.Qxd7#
- 1...Sa4
- 2.Rd4#
- 2.Qd7#
- 1...Sc4
- 2.Rb5#
- 1...Rxe8!
- threat
- 1.Sb3?
- threat
- 2.Rd4#
- 1...Sd7
- 2.Qxd7#
- 1...Sc4
- 2.Rb5#
- 1...Rxe8!
- threat
- 1.Be7?
- 1...Rxc6
- 2.Bxc6#
- 1...Rxe8
- 2.Sc7#
- 1...e3
- 2.Qf3#
- 1...Rc7
- 2.Sxc7#
- 1...Ra8
- 2.Sc7#
- 1...Rb8
- 2.Sc7#
- 1...Rd8
- 2.Sc7#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 2.Qe6#
- 1...Sa4
- 2.Qd7#
- 1...Sd7
- 2.Qxd7#
- 1...Sa8
- 2.Qd7#
- 1...Sc4!
- 1...Rxc6
- 1.Qe2?
- threat
- 2.Qb5#
- 1...Rxc6
- 2.Bxc6#
- 1...Sc4
- 2.Qxc4#
- 1...e3
- 2.Qf3#
- 1...Sa4
- 2.Qc4#
- 2.Qa2#
- 1...Sd7
- 2.Qc4#
- 2.Qa2#
- 1...Be6+!
- threat
- 1.g3?
- 1...Rxc6
- 2.Bxc6#
- 1...Rxe8
- 2.Sc7#
- 1...e3
- 2.Qf3#
- 1...Rc7
- 2.Sxc7#
- 1...Ra8
- 2.Sc7#
- 1...Rb8
- 2.Sc7#
- 1...Rd8
- 2.Sc7#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 2.Qe6#
- 1...Sa4
- 2.Qd7#
- 1...Sd7
- 2.Qxd7#
- 1...Sa8
- 2.Qd7#
- 1...Sc4!
- 1...Rxc6
- 1.Kh2?
- Keys
- 1.Qd1!
- 1...Be6+
- 2.Sf5#
- 1...Rxc6
- 2.Bxc6#
- 1...Rxe8
- 2.Sc7#
- 1...e3
- 2.Qf3#
- 1...Rc7
- 2.Sxc7#
- 1...Ra8
- 2.Sc7#
- 1...Rb8
- 2.Sc7#
- 1...Rd8
- 2.Sc7#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 1...Sa4
- 2.Qb3#
- 1...Sc4
- 2.Rb5#
- 1...Sd7
- 2.Qb3#
- 1...Sa8
- 2.Qb3#
- 1...Be6+
- 1.Qd1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(e);OGATE,XP(I)::B(J),XR(e)
- R(e);N_GUARD::S(H),XR(e)
- R(e);N_GUARD::S(H)
- R(e);N_GUARD,XB(J)::S(H)
- B(f);N_GUARD,P_PINQ(F)::QAB1(F),XB(f)
- B(f);N_GUARD::B(J),XB(f)
- S(c);N_GUARD::QAR2(F)
- S(c);N_GUARD::QAR2(F),XS(c)
- P(a);OGATEB::QAB(F)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- R(e);OGATE,XP(I)::B(J),XR(e)
- R(e);N_GUARD,XB(J)::S(H)
- P(a);OGATEB::QAB(F)
- R(e);N_GUARD::S(H),XR(e)
- R(e);N_GUARD::S(H)
- B(f);N_GUARD::QAB1(F),XB(f)
- B(f);N_GUARD::B(J),XB(f)
- S(c);N_GUARD::QAR2(F)
- S(c);N_GUARD::QAR2(F),XS(c)
- Refutation
- S(c);
- Try
- K(B);P-FLIGHT
- Vars
- R(e);OGATE,XP(I)::B(J),XR(e)
- R(e);N_GUARD,XB(J)::S(H)
- P(a);OGATEB::QAB(F)
- R(e);N_GUARD::S(H),XR(e)
- R(e);N_GUARD::S(H)
- B(f);N_GUARD::QAB1(F),XB(f)
- B(f);N_GUARD::B(J),XB(f)
- S(c);N_GUARD::QAR2(F)
- S(c);N_GUARD::QAR2(F),XS(c)
- Refutation
- S(c);
- Try
- K(B);P-FLIGHT
- Vars
- R(e);OGATE,XP(I)::B(J),XR(e)
- R(e);N_GUARD,XB(J)::S(H)
- P(a);OGATEB::QAB(F)
- R(e);N_GUARD::S(H),XR(e)
- R(e);N_GUARD::S(H)
- B(f);N_GUARD::QAB1(F),XB(f)
- B(f);N_GUARD::B(J),XB(f)
- S(c);N_GUARD::QAR2(F)
- S(c);N_GUARD::QAR2(F),XS(c)
- Refutation
- S(c);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- S(c);N_GUARD::QAR2(F),XS(c)
- S(c);SBLOCK::R(C)
- Refutation
- R(e);XB(J)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(e);XP(I)::R1(C)
- S(c);N_GUARD::QAR2(F),XS(c)
- S(c);SBLOCK::R(C)
- Refutation
- R(e);XB(J)
- Try
- S(D);
- Threat
- R1(C)
- Vars
- S(c);N_GUARD::QAR2(F),XS(c)
- S(c);SBLOCK::R(C)
- Refutation
- R(e);XB(J)
- Try
- B(K);
- Vars
- R(e);OGATE,XP(I)::B(J),XR(e)
- R(e);N_GUARD,XB(J)::S(H)
- P(a);OGATEB::QAB(F)
- R(e);N_GUARD::S(H),XR(e)
- R(e);N_GUARD::S(H)
- B(f);N_GUARD,P_PINQ(F)::QAB1(F),XB(f)
- B(f);N_GUARD::B(J),XB(f)
- S(c);N_GUARD::QAR2(F)
- S(c);N_GUARD::QAR2(F),XS(c)
- Refutation
- S(c);
- Try
- Q(F);
- Threat
- QAR2(F)
- Vars
- R(e);OGATE,XP(I)::B(J),XR(e)
- S(c);N_GUARD::QAB1(F),XS(c)
- P(a);OGATEB::QAB(F)
- Refutation
- B(f);CHECK
- Try
- P(A);
- Vars
- R(e);OGATE,XP(I)::B(J),XR(e)
- R(e);N_GUARD,XB(J)::S(H)
- P(a);OGATEB::QAB(F)
- R(e);N_GUARD::S(H),XR(e)
- R(e);N_GUARD::S(H)
- B(f);N_GUARD,P_PINQ(F)::QAB1(F),XB(f)
- B(f);N_GUARD::B(J),XB(f)
- S(c);N_GUARD::QAR2(F)
- S(c);N_GUARD::QAR2(F),XS(c)
- Refutation
- S(c);
- Try
- Actual
- Q(F);
- Vars
- B(f);CHECK,SBLOCK::QAR(F)+S(D)
- R(e);OGATE,XP(I)::B(J),XR(e)
- R(e);N_GUARD,XB(J)::S(H)
- P(a);OGATEB::QAB(F)
- R(e);N_GUARD::S(H),XR(e)
- R(e);N_GUARD::S(H)
- B(f);N_GUARD::B(J),XB(f)
- B(f);N_GUARD::B(J)
- S(c);N_GUARD::QAB(F)
- S(c);SBLOCK::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).