MESON Chess Problem Database
Problem Display
PID: 9479 (2K3b1/1nn3Bp/4k3/5NpQ/3R3b/7N/8/5R2 w - - 0 1)
Blake, Percy Francis
Hampstead and Highgate Express, 1904
#2
7 + 7
SOLUTION
- SOUND
- Sets
- 1...Be1
- 2.Sxg5#
- 1...Bg3
- 2.Sxg5#
- 1...Bf7
- 2.Qe2#
- 1...Sa5
- 2.Rd6#
- 1...Sc5
- 2.Rd6#
- 1...Sd6+
- 2.Rxd6#
- 1...Sd8
- 2.Rd6#
- 1...Sb5
- 2.Qe8#
- 1...Sd5
- 2.Re4#
- 1...Sa6
- 2.Qe8#
- 1...Sa8
- 2.Qe8#
- 1...Se8
- 2.Qxe8#
- 1...g4
- 2.Sf4#
- 1...h6
- 2.Qg6#
- 1...Be1
- Tries
- 1.Bh8?
- 1...Sd6+
- 2.Rxd6#
- 1...Be1
- 2.Sxg5#
- 1...Bg3
- 2.Sxg5#
- 1...Bf7
- 2.Qe2#
- 1...Sa5
- 2.Rd6#
- 1...Sc5
- 2.Rd6#
- 1...Sd8
- 2.Rd6#
- 1...Sb5
- 2.Qe8#
- 1...Sd5
- 2.Re4#
- 1...Sa6
- 2.Qe8#
- 1...Sa8
- 2.Qe8#
- 1...Se8
- 2.Qxe8#
- 1...g4
- 2.Sf4#
- 1...h6
- 2.Qg6#
- 1...Bf2!
- 1...Sd6+
- 1.Re1+?
- 1...Kxf5
- 2.Re5#
- 2.Rf4#
- 1...Bxe1!
- 1...Kxf5
- 1.Rf2?
- 1...Sd6+
- 2.Rxd6#
- 1...Bg3
- 2.Sxg5#
- 1...Bf7
- 2.Qe2#
- 1...Sa5
- 2.Rd6#
- 1...Sc5
- 2.Rd6#
- 1...Sd8
- 2.Rd6#
- 1...Sb5
- 2.Qe8#
- 1...Sd5
- 2.Re4#
- 1...Sa6
- 2.Qe8#
- 1...Sa8
- 2.Qe8#
- 1...Se8
- 2.Qxe8#
- 1...g4
- 2.Sf4#
- 2.Re2#
- 1...h6
- 2.Qg6#
- 1...Bxf2!
- 1...Sd6+
- 1.Rf3?
- 1...Sd6+
- 2.Rxd6#
- 1...Be1
- 2.Sxg5#
- 1...Bf2
- 2.Sxg5#
- 1...Bg3
- 2.Sxg5#
- 1...Sa5
- 2.Rd6#
- 1...Sc5
- 2.Rd6#
- 1...Sd8
- 2.Rd6#
- 1...Sb5
- 2.Qe8#
- 1...Sd5
- 2.Re4#
- 1...Sa6
- 2.Qe8#
- 1...Sa8
- 2.Qe8#
- 1...Se8
- 2.Qxe8#
- 1...g4
- 2.Sf4#
- 2.Re3#
- 1...h6
- 2.Qg6#
- 1...Bf7!
- 1...Sd6+
- 1.Rd7?
- threat
- 2.Sd4#
- 2.Qe2#
- 2.Qh6#
- 1...Sd6+
- 2.Rxd6#
- 1...Sd5
- 2.Sd4#
- 1...Bg3
- 2.Sxg5#
- 2.Sd4#
- 2.Qh6#
- 1...Bf7
- 2.Sd4#
- 2.Qe2#
- 2.Qxf7#
- 1...Sc5
- 2.Sd4#
- 2.Rd6#
- 2.Qh6#
- 1...Sb5
- 2.Qe2#
- 2.Qe8#
- 2.Qh6#
- 1...Se8
- 2.Sd4#
- 2.Qe2#
- 2.Qxe8#
- 1...g4
- 2.Sf4#
- 2.Sd4#
- 1...h6
- 2.Sd4#
- 2.Qe2#
- 2.Qg6#
- 2.Qxh6#
- 1...Bf2!
- threat
- 1.Bh8?
- Keys
- 1.Rff4!
- 1...Sd6+
- 2.Rxd6#
- 1...gxf4
- 2.Sxf4#
- 1...Be1
- 2.Sxg5#
- 1...Bf2
- 2.Sxg5#
- 1...Bg3
- 2.Sxg5#
- 1...Bf7
- 2.Qe2#
- 1...Sa5
- 2.Rd6#
- 1...Sc5
- 2.Rd6#
- 1...Sd8
- 2.Rd6#
- 1...Sb5
- 2.Qe8#
- 1...Sd5
- 2.Rde4#
- 1...Sa6
- 2.Qe8#
- 1...Sa8
- 2.Qe8#
- 1...Se8
- 2.Qxe8#
- 1...g4
- 2.Rfe4#
- 1...h6
- 2.Qg6#
- 1...Sd6+
- 1.Rff4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD::S(B),XP(b)
- B(g);SBLOCK::QAR(E)
- S(d);N_GUARD::R1(C)
- S(d);CHECK,N_GUARD::R1(C),XS(d)
- S(e);N_GUARD::QAR2(E)
- S(e);SBLOCK::R(C)
- S(e);N_GUARD::QAR2(E),XS(e)
- P(b);N_GUARD::S(B)
- P(f);N_GUARD::QAR2(E)
- Tries
- Try
- B(F);
- Vars
- S(d);CHECK,N_GUARD::R1(C),XS(d)
- B(a);N_GUARD::S(B),XP(b)
- B(g);SBLOCK::QAR(E)
- S(d);N_GUARD::R1(C)
- S(e);N_GUARD::QAR2(E)
- S(e);SBLOCK::R(C)
- S(e);N_GUARD::QAR2(E),XS(e)
- P(b);N_GUARD::S(B)
- P(f);N_GUARD::QAR2(E)
- Refutation
- B(a);
- Try
- R(A);CHECK
- Refutation
- B(a);XR(A)
- Try
- R(A);
- Vars
- S(d);CHECK,N_GUARD::R1(C),XS(d)
- B(a);N_GUARD::S(B),XP(b)
- B(g);SBLOCK::QAR(E)
- S(d);N_GUARD::R1(C)
- S(e);N_GUARD::QAR2(E)
- S(e);SBLOCK::R(C)
- S(e);N_GUARD::QAR2(E),XS(e)
- P(f);N_GUARD::QAR2(E)
- Refutation
- B(a);XR(A)
- Try
- R(A);
- Vars
- S(d);CHECK,N_GUARD::R1(C),XS(d)
- B(a);N_GUARD::S(B),XP(b)
- S(d);N_GUARD::R1(C)
- S(e);N_GUARD::QAR2(E)
- S(e);SBLOCK::R(C)
- S(e);N_GUARD::QAR2(E),XS(e)
- P(f);N_GUARD::QAR2(E)
- Refutation
- B(g);
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- S(d);CHECK,N_GUARD::R1(C),XS(d)
- S(e);::S(D)
- Refutation
- B(a);
- Try
- Actual
- R(A);
- Vars
- S(d);CHECK,N_GUARD::R1(C),XS(d)
- P(b);XR(A)::S(B),XP(b)
- B(a);N_GUARD::S(B),XP(b)
- B(g);SBLOCK::QAR(E)
- S(d);N_GUARD::R1(C)
- S(e);N_GUARD::QAR2(E)
- S(e);SBLOCK::R(C)
- S(e);N_GUARD::QAR2(E),XS(e)
- P(b);::R(A)
- P(f);N_GUARD::QAR2(E)
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).