MESON Chess Problem Database
Problem Display
PID: 9750 (1B4bN/8/KR1br2p/3Pk3/7Q/8/4n2N/1B1R2n1 w - - 0 1)
Blake, Percy Francis
Illustrated Western Weekly News, 1909
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Rf6
- 2.Qe4#
- 1...Rg6
- 2.Sxg6#
- 1...Re7
- 2.Sg6#
- 2.Bxd6#
- 1...Re8
- 2.Sg6#
- 2.Bxd6#
- 1...Bf7
- 2.Sxf7#
- 1...Bh7
- 2.Sf7#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...Sc1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sf4
- 2.Sg4#
- 1...h5
- 2.Qg5#
- 1...Rf6
- Tries
- 1.Bc7?
- 1...Sd4
- 2.Qxd4#
- 1...Rf6
- 2.Qe4#
- 1...Rg6
- 2.Sxg6#
- 1...Re7
- 2.Sg6#
- 2.Bxd6#
- 1...Re8
- 2.Sg6#
- 2.Bxd6#
- 1...Bf7
- 2.Sxf7#
- 1...Bh7
- 2.Sf7#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...Sc1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sf4
- 2.Sg4#
- 1...h5
- 2.Qg5#
- 1...Bxc7!
- 1...Sd4
- 1.Rxd6?
- threat
- 2.Rxe6#
- 1...Rf6
- 2.Re6#
- 2.Rxf6#
- 2.Qxf6#
- 2.Qe4#
- 1...Rg6
- 2.Sxg6#
- 2.Re6#
- 2.Rf6#
- 2.Rxg6#
- 2.Qe4#
- 1...Re7
- 2.Sg6#
- 2.Re6#
- 2.Rd7#
- 2.Qf6#
- 2.Qe4#
- 1...Re8
- 2.Sg6#
- 2.Re6#
- 2.Rd8#
- 2.Qf6#
- 2.Qe4#
- 1...Sd4
- 2.Qxd4#
- 1...Rxd6+!
- threat
- 1.Qf2?
- threat
- 2.Sg4#
- 2.Qf5#
- 1...Sd4
- 2.Qxd4#
- 1...Sf4
- 2.Sg4#
- 2.Qd4#
- 2.Qb2#
- 1...Rf6
- 2.Sg4#
- 2.Qe3#
- 1...Rg6
- 2.Sxg6#
- 2.Qf5#
- 1...Bh7
- 2.Sg4#
- 2.Sf7#
- 1...Sg3
- 2.Sg4#
- 2.Qd4#
- 1...h5
- 2.Qf5#
- 1...Sf3!
- threat
- 1.Qf4+?
- 1...Sxf4
- 2.Sg4#
- 1...Kxf4!
- 1...Sxf4
- 1.Bc7?
- Keys
- 1.Rb5!
- 1...Bc7+
- 2.d6#
- 1...Bxb8+
- 2.d6#
- 1...Rf6
- 2.Qe4#
- 1...Rg6
- 2.Sxg6#
- 1...Re7
- 2.Sg6#
- 1...Re8
- 2.Sg6#
- 1...Bf7
- 2.Sxf7#
- 1...Bh7
- 2.Sf7#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...Sc1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sf4
- 2.Sg4#
- 1...h5
- 2.Qg5#
- 1...Bc7+
- 1.Rb5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- R(e);SBLOCK::QAR1(D)
- R(e);N_GUARD::S(I),XR(e)
- B(g);N_GUARD::S(I),XB(g)
- B(g);N_GUARD::S(I)
- S(a);N_GUARD::S(C),XS(a)
- S(a);N_GUARD::S(C)
- S(b);N_GUARD::QAB1(D)
- S(b);N_GUARD::QAB1(D),XS(b)
- S(b);SBLOCK::S(C)
- P(f);N_GUARD::QAR2(D)
- Tries
- Try
- B(H);
- Vars
- S(b);N_GUARD::QAB1(D),XS(b)
- R(e);SBLOCK::QAR1(D)
- R(e);N_GUARD::S(I),XR(e)
- B(g);N_GUARD::S(I),XB(g)
- B(g);N_GUARD::S(I)
- S(a);N_GUARD::S(C),XS(a)
- S(a);N_GUARD::S(C)
- S(b);N_GUARD::QAB1(D)
- S(b);SBLOCK::S(C)
- P(f);N_GUARD::QAR2(D)
- Refutation
- B(d);N_SPINB(d),P_PINR(G),XB(H)
- Try
- R(G);P_SPINR(G),XB(d)
- Threat
- B(H)+R(G),DCHECK,XR(e)
- Vars
- S(b);N_GUARD::QAB1(D),XS(b)
- Refutation
- R(e);CHECK,P_SPINR(e),XR(G)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::QAB1(D),XS(b)
- P(f);::QAR1(D)
- Refutation
- S(a);
- Try
- Q(D);CHECK
- Vars
- S(b);SBLOCK,XQ(D)::S(C)
- Refutation
- K(c);S_FLIGHT,XQ(D)
- Try
- Actual
- R(G);
- Vars
- B(d);CHECK,OGATE::R(G)+P(E)
- B(d);CHECK,N_SPINB(d),OGATE,XB(H)::R(G)+P(E)
- R(e);SBLOCK::QAR1(D)
- R(e);N_GUARD::S(I),XR(e)
- R(e);N_GUARD::S(I)
- B(g);N_GUARD::S(I),XB(g)
- B(g);N_GUARD::S(I)
- S(a);N_GUARD::S(C),XS(a)
- S(a);N_GUARD::S(C)
- S(b);N_GUARD::QAB1(D)
- S(b);N_GUARD::QAB1(D),XS(b)
- S(b);SBLOCK::S(C)
- P(f);N_GUARD::QAR2(D)
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).