MESON Chess Problem Database
Problem Display
PID: 203425 (4BrN1/K7/PR6/3k1n2/1P1PR3/3nP3/3N4/8 w - - 0 1)
Blake, Percy Francis
Falkirk Herald, 1924
#2
10 + 4
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rf6
- 2.Sxf6#
- 1...Rf7+
- 2.Bxf7#
- 1...Rxe8
- 2.Sf6#
- 1...Rxg8
- 2.Bf7#
- 1...Sc1
- 2.Re5#
- 1...Se1
- 2.Re5#
- 1...Sb2
- 2.Re5#
- 1...Sf2
- 2.Re5#
- 1...Sxb4
- 2.Re5#
- 1...Sf4
- 2.Re5#
- 1...Sc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sxe3
- 2.Se7#
- 1...Sg3
- 2.Se7#
- 1...Sxd4
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sd6
- 2.Se7#
- 2.Bc6#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...Rf6
- Tries
- 1.Bh5?
- 1...Rf7+
- 2.Bxf7#
- 1...Rxg8
- 2.Bf7#
- 1...Sxb4
- 2.Re5#
- 1...Sxe3
- 2.Se7#
- 1...Sxd4
- 2.Se7#
- 1...Rf6
- 2.Sxf6#
- 1...Rb8
- 2.Sf6#
- 2.Bf7#
- 1...Rc8
- 2.Sf6#
- 2.Bf7#
- 1...Rd8
- 2.Sf6#
- 2.Bf7#
- 1...Re8
- 2.Sf6#
- 1...Sc1
- 2.Re5#
- 1...Se1
- 2.Re5#
- 1...Sb2
- 2.Re5#
- 1...Sf2
- 2.Re5#
- 1...Sf4
- 2.Re5#
- 1...Sc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sg3
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sd6
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...Ra8+!
- 1...Rf7+
- 1.Bg6?
- 1...Rf7+
- 2.Bxf7#
- 1...Rxg8
- 2.Bf7#
- 1...Sxb4
- 2.Re5#
- 1...Sxe3
- 2.Se7#
- 1...Sxd4
- 2.Se7#
- 1...Rf6
- 2.Sxf6#
- 1...Rb8
- 2.Sf6#
- 2.Bf7#
- 1...Rc8
- 2.Sf6#
- 2.Bf7#
- 1...Rd8
- 2.Sf6#
- 2.Bf7#
- 1...Re8
- 2.Sf6#
- 1...Sc1
- 2.Re5#
- 1...Se1
- 2.Re5#
- 1...Sb2
- 2.Re5#
- 1...Sf2
- 2.Re5#
- 1...Sf4
- 2.Re5#
- 1...Sc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sg3
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sd6
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...Ra8+!
- 1...Rf7+
- 1.Rd6+?
- 1...Sxd6
- 2.Se7#
- 1...Kxd6!
- 1...Sxd6
- 1.Rbe6?
- threat
- 2.Bc6#
- 1...Rxe8
- 2.Sf6#
- 1...Sxb4
- 2.R4e5#
- 1...Sxd4
- 2.Se7#
- 1...Se5
- 2.R4xe5#
- 1...Sd6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Rf7+!
- threat
- 1.b5?
- 1...Rf7+
- 2.Bxf7#
- 1...Rxe8
- 2.Sf6#
- 1...Rxg8
- 2.Bf7#
- 1...Sxe3
- 2.Se7#
- 1...Rf6
- 2.Sxf6#
- 1...Sc1
- 2.Re5#
- 1...Se1
- 2.Re5#
- 1...Sb2
- 2.Re5#
- 1...Sf2
- 2.Re5#
- 1...Sb4
- 2.Re5#
- 1...Sf4
- 2.Re5#
- 1...Sc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sg3
- 2.Se7#
- 1...Sh4
- 2.Se7#
- 1...Sd6
- 2.Se7#
- 2.Bc6#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sg7
- 2.Se7#
- 1...Sxd4!
- 1...Rf7+
- 1.Bh5?
- Keys
- 1.Re7!
- 1...Rxe8
- 2.Sf6#
- 1...Rxg8
- 2.Bf7#
- 1...Sxb4
- 2.Re5#
- 1...Sxe3
- 2.Rd7#
- 1...Sxd4
- 2.e4#
- 1...Sxe7
- 2.Sxe7#
- 1...Rf6
- 2.Sxf6#
- 1...Rf7
- 2.Bxf7#
- 1...Sc1
- 2.Re5#
- 1...Se1
- 2.Re5#
- 1...Sb2
- 2.Re5#
- 1...Sf2
- 2.Re5#
- 1...Sf4
- 2.Re5#
- 1...Sc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sg3
- 2.Rd7#
- 1...Sh4
- 2.Rd7#
- 1...Sd6
- 2.Bc6#
- 1...Sh6
- 2.Rd7#
- 1...Sg7
- 2.Rd7#
- 1...Rxe8
- 1.Re7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(d);N_GUARD::S(J),XR(d)
- R(d);CHECK,N_GUARD::B(I),XR(d)
- R(d);N_GUARD,XB(I)::S(J)
- R(d);N_GUARD,XS(J)::B(I)
- S(a);N_GUARD::R1(E)
- S(a);N_GUARD,XP(C)::R1(E)
- S(a);N_GUARD::R1(E),XS(a)
- S(c);N_GUARD,XP(B)::S(J)
- S(c);N_GUARD::S(J)
- S(c);N_GUARD,XP(D)::S(J)
- S(c);N_GUARD::S(J),XS(c)
- Tries
- Try
- B(I);
- Vars
- R(d);CHECK,N_GUARD::B(I),XR(d)
- R(d);N_GUARD,XS(J)::B(I)
- S(a);N_GUARD,XP(C)::R1(E)
- S(c);N_GUARD,XP(B)::S(J)
- S(c);N_GUARD,XP(D)::S(J)
- R(d);N_GUARD::S(J),XR(d)
- R(d);N_GUARD::S(J)
- S(a);N_GUARD::R1(E)
- S(a);N_GUARD::R1(E),XS(a)
- S(c);N_GUARD::S(J)
- S(c);N_GUARD::S(J),XS(c)
- Refutation
- R(d);CHECK
- Try
- B(I);
- Vars
- R(d);CHECK,N_GUARD::B(I),XR(d)
- R(d);N_GUARD,XS(J)::B(I)
- S(a);N_GUARD,XP(C)::R1(E)
- S(c);N_GUARD,XP(B)::S(J)
- S(c);N_GUARD,XP(D)::S(J)
- R(d);N_GUARD::S(J),XR(d)
- R(d);N_GUARD::S(J)
- S(a);N_GUARD::R1(E)
- S(a);N_GUARD::R1(E),XS(a)
- S(c);N_GUARD::S(J)
- S(c);N_GUARD::S(J),XS(c)
- Refutation
- R(d);CHECK
- Try
- R(G);CHECK
- Vars
- S(c);SBLOCK,XR(G)::S(J)
- Refutation
- K(b);P-FLIGHT,XR(G)
- Try
- R(G);
- Threat
- B(I)
- Vars
- R(d);N_GUARD,XB(I)::S(J)
- S(a);N_GUARD,XP(C)::R1(E)
- S(c);N_GUARD,XP(D)::S(J)
- S(a);N_GUARD::R1(E),XS(a)
- S(c);N_GUARD::S(J)
- S(c);N_GUARD::S(J),XS(c)
- Refutation
- R(d);CHECK
- Try
- P(C);
- Vars
- R(d);CHECK,N_GUARD::B(I),XR(d)
- R(d);N_GUARD,XB(I)::S(J)
- R(d);N_GUARD,XS(J)::B(I)
- S(c);N_GUARD,XP(B)::S(J)
- R(d);N_GUARD::S(J),XR(d)
- S(a);N_GUARD::R1(E)
- S(a);N_GUARD::R1(E),XS(a)
- S(c);N_GUARD::S(J)
- S(c);N_GUARD::S(J),XS(c)
- Refutation
- S(c);XP(D)
- Try
- Actual
- R(E);
- Vars
- R(d);N_GUARD,XB(I)::S(J)
- R(d);N_GUARD,XS(J)::B(I)
- S(a);N_GUARD,XP(C)::R1(E)
- S(c);N_GUARD,XP(B)::R(E)
- S(c);SBLOCK,XP(D)::P(B)
- S(c);XR(E)::S(J),XS(c)
- R(d);N_GUARD::S(J),XR(d)
- R(d);N_GUARD,P_PINR(E)::B(I),XR(d)
- S(a);N_GUARD::R1(E)
- S(a);N_GUARD::R1(E),XS(a)
- S(c);N_GUARD::R(E)
- S(c);SBLOCK::B(I)
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).