MESON Chess Problem Database
Problem Display
PID: 9674 (3R1B2/1KQ5/7n/3B4/p2k2r1/1p1rN1Rb/q5P1/1n6 w - - 0 1)
Blake, Percy Francis
5th Prize, Western Daily Mercury, 1907
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Qxg2
- 2.Bxg2#
- 1...Rc3
- 2.Bc6#
- 1...Rxe3
- 2.Bf3#
- 1...Re4
- 2.Be6#
- 1...Rh4
- 2.Bg7#
- 2.Qg7#
- 1...Rg7
- 2.Bxg7#
- 2.Qxg7#
- 1...Bxg2
- 2.Bxg2#
- 1...Sc3
- 2.Bc5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...b2
- 2.Sc2#
- 1...Qxg2
- Tries
- 1.Sd1?
- threat
- 2.Bf3#
- 2.Bc5#
- 1...Rxd1
- 2.Bc5#
- 1...Rdxg3
- 2.Bf3#
- 1...Rgxg3
- 2.Bc5#
- 2.Qf4#
- 1...Re3
- 2.Bf3#
- 1...Rf3
- 2.Bxf3#
- 1...Qc2
- 2.Bf3#
- 1...Rc3
- 2.Bf3#
- 1...Re4
- 2.Be6#
- 2.Bc5#
- 1...Rf4
- 2.Bc5#
- 2.Qxf4#
- 1...Rh4
- 2.Bc5#
- 2.Bg7#
- 2.Qg7#
- 1...Rg5
- 2.Bc5#
- 2.Qf4#
- 1...Rg6
- 2.Bc5#
- 2.Qf4#
- 1...Rg7
- 2.Bc5#
- 2.Bxg7#
- 2.Qxg7#
- 1...Rg8
- 2.Bc5#
- 2.Qf4#
- 1...Sc3
- 2.Bc5#
- 1...Sf5
- 2.Bc5#
- 1...Sf7
- 2.Bc5#
- 1...b2
- 2.Bc5#
- 1...Qa3!
- threat
- 1.Sxg4?
- threat
- 2.Bf3#
- 2.Bg7#
- 2.Qe5#
- 2.Qc4#
- 2.Qc5#
- 2.Qg7#
- 1...Rxg3
- 2.Bf3#
- 2.Qc4#
- 1...Bxg4
- 2.Bg7#
- 2.Qg7#
- 1...Re3
- 2.Bf3#
- 2.Qc4#
- 1...Rf3
- 2.Bxf3#
- 2.Qc4#
- 1...Qa3
- 2.Bg7#
- 2.Qe5#
- 2.Qc4#
- 2.Qg7#
- 1...Qc2
- 2.Bf3#
- 2.Bg7#
- 2.Qe5#
- 2.Qg7#
- 1...Qe2
- 2.Bf3#
- 2.Qc4#
- 2.Qc5#
- 1...Qf2
- 2.Bf3#
- 2.Qe5#
- 2.Qc4#
- 2.Qc5#
- 1...Rc3
- 2.Bf3#
- 2.Bg7#
- 2.Qf4#
- 2.Qe5#
- 2.Qg7#
- 1...Sd2
- 2.Bf3#
- 2.Bg7#
- 2.Qe5#
- 2.Qc5#
- 2.Qg7#
- 1...Sa3
- 2.Bf3#
- 2.Bg7#
- 2.Qe5#
- 2.Qc5#
- 2.Qg7#
- 1...Sc3
- 2.Bc5#
- 2.Bg7#
- 2.Qe5#
- 2.Qb6#
- 2.Qc4#
- 2.Qc5#
- 2.Qg7#
- 1...Sf5
- 2.Qe5#
- 2.Qc4#
- 2.Qc5#
- 1...Sf7
- 2.Qc4#
- 2.Qc5#
- 1...Sg8
- 2.Bf3#
- 2.Qe5#
- 2.Qc4#
- 2.Qc5#
- 1...b2
- 2.Bg7#
- 2.Qe5#
- 2.Qc5#
- 2.Qg7#
- 1...Sxg4!
- threat
- 1.Bc4+?
- 1...Ke4
- 2.Bxd3#
- 1...Kc3!
- 1...Ke4
- 1.Bd6?
- threat
- 2.Be5#
- 2.Qc4#
- 2.Qc5#
- 1...Rxe3
- 2.Qc4#
- 1...Rxg3
- 2.Qc5#
- 1...Rd1
- 2.Qc4#
- 1...Rd2
- 2.Qc4#
- 1...Qa3
- 2.Be5#
- 2.Qc4#
- 1...Qc2
- 2.Be5#
- 1...Re4
- 2.Qc4#
- 2.Qc5#
- 1...Rg5
- 2.Qc4#
- 2.Qc5#
- 1...Rg7
- 2.Be5#
- 2.Qxg7#
- 1...Sd2
- 2.Be5#
- 2.Qc5#
- 1...Sa3
- 2.Be5#
- 2.Qc5#
- 1...Sf7
- 2.Qc4#
- 2.Qc5#
- 1...b2
- 2.Be5#
- 2.Qc5#
- 1...Rc3!
- threat
- 1.Re8?
- threat
- 2.Qe5#
- 2.Qc4#
- 2.Qc5#
- 1...Rxe3
- 2.Qc4#
- 1...Rd1
- 2.Qc4#
- 1...Rd2
- 2.Qc4#
- 1...Qa3
- 2.Qe5#
- 2.Qc4#
- 1...Qc2
- 2.Qe5#
- 1...Re4
- 2.Rxe4#
- 2.Qc4#
- 2.Qc5#
- 1...Rg5
- 2.Re4#
- 2.Qc4#
- 2.Qc5#
- 1...Rg7
- 2.Bxg7#
- 2.Re4#
- 2.Qxg7#
- 1...Sd2
- 2.Qe5#
- 2.Qc5#
- 1...Sa3
- 2.Qe5#
- 2.Qc5#
- 1...Sf7
- 2.Qc4#
- 2.Qc5#
- 1...b2
- 2.Qe5#
- 2.Qc5#
- 1...Rc3!
- threat
- 1.Sd1?
- Keys
- 1.Bb4!
- threat
- 2.Bc6#
- 1...Qxg2
- 2.Bxg2#
- 1...Rxe3
- 2.Bf3#
- 1...Rxg3
- 2.Qf4#
- 1...Bxg2
- 2.Bxg2#
- 1...Re4
- 2.Be6#
- 1...Rf4
- 2.Qxf4#
- 1...Rh4
- 2.Qg7#
- 1...Rg5
- 2.Qf4#
- 1...Rg6
- 2.Qf4#
- 1...Rg7
- 2.Qxg7#
- 1...Rg8
- 2.Qf4#
- 1...Sc3
- 2.Bc5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...b2
- 2.Sc2#
- threat
- 1.Bb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 2
- Sets
- Q(b);OGATE,P_PINB(D),XP(A)::R(G)+B(D),XQ(b)
- R(d);SBLOCK::R(G)+B(D)
- R(d);SBLOCK,XS(B)::R(G)+B(D)
- R(h);SBLOCK::R(G)+B(D)
- B(e);OGATE,P_PINB(D),XP(A)::R(G)+B(D),XB(e)
- S(a);SBLOCK::B(H)
- S(i);N_GUARD::S(B),XS(i)
- S(i);N_GUARD::S(B)
- P(c);N_GUARD,S_CUTQ(b)::S(B)
- Tries
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- R(d);XS(B)::B(H)
- R(d);XR(C)::R(G)+B(D)
- R(d);::R(G)+B(D)
- R(d);::R(G)+B(D),XR(d)
- Q(b);::R(G)+B(D)
- S(a);::B(H)
- S(i);::B(H)
- P(c);::B(H)
- Refutation
- Q(b);
- Try
- S(B);XR(h)
- Threat
- DUALS(6)
- Refutation
- S(i);XS(B)
- Try
- B(D);CHECK
- Vars
- K(g);P-FLIGHT::B(D),XR(d)
- Refutation
- K(g);S_FLIGHT
- Try
- B(H);
- Threat
- DUALS(3)
- Vars
- R(d);XS(B)::QAR1(F)
- R(h);XR(C)::QAB1(F)
- R(d);::QAR1(F)
- Q(b);::B(H)
- Refutation
- R(d);
- Try
- R(G);
- Threat
- DUALS(3)
- Vars
- R(d);XS(B)::QAR1(F)
- R(d);::QAR1(F)
- Q(b);::QAB1(F)
- Refutation
- R(d);
- Try
- Actual
- B(H);
- Threat
- R(G)+B(D)
- Vars
- Q(b);OGATE,P_PINB(D),XP(A)::R(G)+B(D),XQ(b)
- R(d);SBLOCK,XS(B)::R(G)+B(D)
- R(h);N_GUARD,XR(C)::QAR2(F)
- B(e);OGATE,P_PINB(D),XP(A)::R(G)+B(D),XB(e)
- R(h);SBLOCK::R(G)+B(D)
- R(h);N_GUARD::QAR2(F),XR(h)
- R(h);N_GUARD::QAB(F)
- R(h);N_GUARD::QAR2(F)
- R(h);N_GUARD,P_PINQ(F)::QAB(F),XR(h)
- S(a);SBLOCK::B(H)
- S(i);N_GUARD::S(B),XS(i)
- S(i);N_GUARD::S(B)
- P(c);N_GUARD,S_CUTQ(b)::S(B)
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).