MESON Chess Problem Database
Problem Display
PID: 27767 (1B6/4pp2/6p1/3B4/1P1kP2R/Q5N1/2prP2K/3n4 w - - 0 1)
Blake, Percy Francis
Jamaica Gleaner, 1896
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxe2+
- 2.Sxe2#
- 1...Rd3
- 2.Qxd3#
- 1...Sf2
- 2.e3#
- 1...Sc3
- 2.Qa7#
- 1...Se3
- 2.Qb2#
- 2.Qa1#
- 1...g5
- 2.Sf5#
- 1...e5
- 2.Ba7#
- 1...Rxe2+
- Tries
- 1.Be6?
- threat
- 2.e5#
- 1...Rxe2+
- 2.Sxe2#
- 1...Rd3
- 2.Qxd3#
- 1...Sc3
- 2.Qa7#
- 1...Sf2
- 2.e3#
- 1...Se3
- 2.Qb2#
- 2.Qa1#
- 1...g5
- 2.Sf5#
- 1...f5
- 2.exf5#
- 1...fxe6!
- threat
- 1.Bxf7?
- threat
- 2.e5#
- 1...Rxe2+
- 2.Sxe2#
- 1...Rd3
- 2.Qxd3#
- 1...Sc3
- 2.Qa7#
- 1...Sf2
- 2.e3#
- 1...Se3
- 2.Qb2#
- 2.Qa1#
- 1...g5
- 2.Sf5#
- 1...e5
- 2.Ba7#
- 1...e6!
- threat
- 1.Rh5?
- threat
- 2.Be5#
- 2.Ba7#
- 1...Rxe2+
- 2.Sxe2#
- 1...gxh5
- 2.Sf5#
- 1...Rd3
- 2.Ba7#
- 2.Qxd3#
- 1...Sc3
- 2.Ba7#
- 2.Qa7#
- 1...c1Q
- 2.Be5#
- 1...c1R
- 2.Be5#
- 1...g5
- 2.Sf5#
- 1...e5
- 2.Bxe5#
- 2.Ba7#
- 1...f6
- 2.Ba7#
- 1...f5!
- threat
- 1.Qb3?
- threat
- 2.e5#
- 1...Rxe2+
- 2.Sxe2#
- 1...Rd3
- 2.Qxd3#
- 1...Sf2
- 2.e3#
- 1...Se3
- 2.Qb2#
- 1...g5
- 2.Sf5#
- 1...e5
- 2.Ba7#
- 1...f5
- 2.exf5#
- 1...Sc3!
- threat
- 1.Be6?
- Keys
- 1.Ba2!
- threat
- 2.e5#
- 1...Rxe2+
- 2.Sxe2#
- 1...Rd3
- 2.Qxd3#
- 1...Sc3
- 2.Qa7#
- 1...Sf2
- 2.e3#
- 1...Se3
- 2.Qb2#
- 1...g5
- 2.Sf5#
- 1...e5
- 2.Ba7#
- 1...f5
- 2.exf5#
- threat
- 1.Ba2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(c);CHECK,XP(A)::S(D),XR(c)
- R(c);N_GUARD,N_PINP(A)::QAR1(C),XR(c)
- S(a);N_PINP(A)::P(A)
- S(a);SBLOCK::QAB(C)
- P(e);N_GUARD::S(D)
- P(f);SBLOCK::B(I)
- Tries
- Try
- B(H);
- Threat
- R(G)+P(F)
- Vars
- R(c);CHECK,XP(A)::S(D),XR(c)
- R(c);N_GUARD,N_PINP(A)::QAR1(C),XR(c)
- S(a);SBLOCK::QAB(C)
- S(a);N_PINP(A)::P(A)
- P(e);N_GUARD::S(D)
- P(g);OGATE::R(G)+P(F),XP(g)
- Refutation
- P(g);XB(H)
- Try
- B(H);XP(g)
- Threat
- R(G)+P(F)
- Vars
- R(c);CHECK,XP(A)::S(D),XR(c)
- R(c);N_GUARD,N_PINP(A)::QAR1(C),XR(c)
- S(a);SBLOCK::QAB(C)
- S(a);N_PINP(A)::P(A)
- P(e);N_GUARD::S(D)
- P(f);SBLOCK::B(I)
- Refutation
- P(f);
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,XP(A)::S(D),XR(c)
- P(e);N_GUARD,XR(G)::S(D)
- P(b);::B(I)
- P(e);N_GUARD::S(D)
- P(g);::B(I)
- Refutation
- P(g);
- Try
- Q(C);
- Threat
- R(G)+P(F)
- Vars
- R(c);CHECK,XP(A)::S(D),XR(c)
- R(c);N_GUARD,N_PINP(A)::QAR1(C),XR(c)
- S(a);N_PINP(A)::P(A)
- S(a);N_GUARD,SBLOCK::QAB(C)
- P(e);N_GUARD::S(D)
- P(f);SBLOCK::B(I)
- P(g);OGATE::R(G)+P(F),XP(g)
- Refutation
- S(a);
- Try
- Actual
- B(H);
- Threat
- R(G)+P(F)
- Vars
- R(c);CHECK,XP(A)::S(D),XR(c)
- R(c);N_GUARD,N_PINP(A)::QAR1(C),XR(c)
- S(a);SBLOCK::QAB(C)
- S(a);N_PINP(A)::P(A)
- S(a);N_GUARD,SBLOCK::QAB(C)
- P(e);N_GUARD::S(D)
- P(f);SBLOCK::B(I)
- P(g);OGATE::R(G)+P(F),XP(g)
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).