MESON Chess Problem Database
Problem Display
PID: 67151 (2R4Q/4K3/BP2N1pp/r2k4/b3pn2/7r/1n3B2/1Nbq4 w - - 0 1)
Bernard, Edmond
Due Alfieri, 1979
#2
8 + 11
SOLUTION
- SOUND
- Sets
- 1...Qc2
- 2.Qd4#
- 1...Qe2
- 2.Qd4#
- 1...Qb3
- 2.Qd4#
- 1...Qf3
- 2.Qd4#
- 1...Qg4
- 2.Qd4#
- 1...Qh5
- 2.Qd4#
- 1...Qe1
- 2.Qd4#
- 1...Qf1
- 2.Qd4#
- 1...Qg1
- 2.Qd4#
- 1...Qh1
- 2.Qd4#
- 1...Qd4
- 2.Qxd4#
- 1...Rh1
- 2.Sc3#
- 1...Rh2
- 2.Sc3#
- 1...Rc3
- 2.Sxc3#
- 1...Re3
- 2.Sxf4#
- 1...Rh4
- 2.Sc3#
- 1...Rh5
- 2.Sc3#
- 1...Rb5
- 2.Bb7#
- 1...Rc5
- 2.Rxc5#
- 1...Rxa6
- 2.Rc5#
- 1...Bd2
- 2.Qd4#
- 1...Be3
- 2.Sc3#
- 1...Bc2
- 2.Bb7#
- 1...Bb3
- 2.Bb7#
- 1...Bb5
- 2.Rc5#
- 1...Bc6
- 2.Sc7#
- 1...Sbd3
- 2.Sc3#
- 2.Bc4#
- 2.Qd4#
- 1...Sc4
- 2.Bxc4#
- 1...Sfd3
- 2.Sc3#
- 2.Qd4#
- 1...e3
- 2.Sc3#
- 1...Qc2
- Tries
- 1.Be3?
- threat
- 2.Sc3#
- 2.Sxf4#
- 1...Rxe3
- 2.Sxf4#
- 1...Bxe3
- 2.Sc3#
- 1...Sxe6
- 2.Sc3#
- 1...Qd2
- 2.Sxf4#
- 1...Qc2
- 2.Sxf4#
- 2.Qd4#
- 1...Qb3
- 2.Sxf4#
- 2.Qd4#
- 1...Qf3
- 2.Sc3#
- 2.Qd4#
- 1...Qg4
- 2.Sc3#
- 2.Qd4#
- 1...Qe1
- 2.Sxf4#
- 2.Qd4#
- 1...Qf1
- 2.Sc3#
- 2.Qd4#
- 1...Qd3
- 2.Sxf4#
- 1...Qd4
- 2.Sxf4#
- 2.Qxd4#
- 1...Rf3
- 2.Sc3#
- 1...Rh4
- 2.Sc3#
- 1...Rc5
- 2.Sxf4#
- 2.Rxc5#
- 1...Bd2
- 2.Sxf4#
- 2.Qd4#
- 1...Sbd3
- 2.Sc3#
- 2.Bc4#
- 2.Qd4#
- 1...Sg2
- 2.Sc3#
- 1...Sfd3
- 2.Sc3#
- 2.Qd4#
- 1...Sh5
- 2.Sc3#
- 1...g5
- 2.Sc3#
- 1...Se2!
- threat
- 1.Bd4?
- threat
- 2.Qe5#
- 1...Qxd4
- 2.Qxd4#
- 1...Rh5
- 2.Sc3#
- 1...Sbd3
- 2.Sc3#
- 2.Bc4#
- 1...Sc4
- 2.Bxc4#
- 1...Sfd3
- 2.Sc3#
- 1...Qh5!
- threat
- 1.Be3?
- Keys
- 1.Qf6!
- threat
- 2.Sc7#
- 1...Rxa6
- 2.Rc5#
- 1...Sxe6
- 2.Qxe6#
- 1...e3
- 2.Sc3#
- 1...Qc2
- 2.Qd4#
- 1...Qd4
- 2.Qxd4#
- 1...Rc3
- 2.Sxc3#
- 1...Re3
- 2.Sxf4#
- 1...Rb5
- 2.Bb7#
- 1...Rc5
- 2.Rxc5#
- 1...Be3
- 2.Sc3#
- 1...Bb5
- 2.Rc5#
- threat
- 1.Qf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 18
- Sets
- Q(b);N_GUARD::QAR1(H)
- Q(b);N_GUARD::QAR1(H),XQ(b)
- R(d);N_GUARD::S(A)
- R(d);N_GUARD::S(A),XR(d)
- R(d);S_CUTB(a)::S(E),XS(g)
- R(h);S_CUTB(e)::B(C)
- R(h);N_GUARD::R1(G),XR(h)
- R(h);N_GUARD,XB(C)::R1(G)
- B(a);S_CUTQ(b)::QAR1(H)
- B(a);S_CUTR(d)::S(A)
- B(e);N_GUARD::B(C)
- B(e);S_CUTR(h)::R1(G)
- B(e);SBLOCK::S(E)
- S(c);N_GUARD::B(C),XS(c)
- P(f);S_CUTR(d)::S(A)
- Tries
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- R(d);XB(B)::S(E),XS(g)
- B(a);XB(B)::S(A)
- S(g);XS(E)::S(A)
- Q(b);::S(E),XS(g)
- R(d);::S(A)
- S(g);::S(A)
- P(j);::S(A)
- Refutation
- S(g);
- Try
- B(B);
- Threat
- QAR1(H)
- Vars
- Q(b);OGATE,XB(B)::QAR1(H),XQ(b)
- R(d);N_GUARD::S(A)
- S(c);N_GUARD::B(C),XS(c)
- S(g);S_CUTR(d)::S(A)
- Refutation
- Q(b);
- Try
- Actual
- Q(H);
- Threat
- S(E)
- Vars
- R(h);N_GUARD,XB(C)::R1(G)
- S(g);OGATE,XS(E)::QAB1(H),XS(g)
- P(f);S_CUTR(d)::S(A)
- Q(b);N_GUARD::QAR1(H)
- Q(b);N_GUARD::QAR1(H),XQ(b)
- R(d);N_GUARD::S(A),XR(d)
- R(d);S_CUTB(a)::S(E),XS(g)
- R(h);S_CUTB(e)::B(C)
- R(h);N_GUARD::R1(G),XR(h)
- B(a);S_CUTR(d)::S(A)
- B(e);S_CUTR(h)::R1(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).