MESON Chess Problem Database
Problem Display
PID: 142763 (4r2b/P1Pr3q/N2p4/1P1k1P2/1Qn2n2/2B5/K1R1R3/5B2 w - - 0 1)
Loustau, Jean-Marc
Phenix, 1988
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxe2
- 2.a8Q#
- 2.a8B#
- 1...Re3
- 2.a8Q#
- 2.a8B#
- 1...Re4
- 2.a8Q#
- 2.a8B#
- 1...Re5
- 2.a8Q#
- 2.a8B#
- 1...Re6
- 2.a8Q#
- 2.a8B#
- 1...Re7
- 2.a8Q#
- 2.a8B#
- 1...Se5
- 2.Qd4#
- 2.Qe4#
- 1...Se6
- 2.Bg2#
- 1...Rxe2
- Tries
- 1.Bg2+?
- 1...Re4
- 2.Bxe4#
- 2.a8Q#
- 2.a8B#
- 1...Sxg2!
- 1...Re4
- 1.Bf6?
- threat
- 2.Qxc4#
- 1...Re4
- 2.a8Q#
- 2.a8B#
- 1...Sb2
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Se3
- 2.Qd4#
- 1...Sa5
- 2.Qd4#
- 1...Se5
- 2.Qe4#
- 1...Sb6
- 2.Qd4#
- 1...Rxc7!
- threat
- 1.Bxh8?
- threat
- 2.Qxc4#
- 1...Re4
- 2.a8Q#
- 2.a8B#
- 1...Sb2
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Se3
- 2.Qd4#
- 1...Sa5
- 2.Qd4#
- 1...Se5
- 2.Qe4#
- 1...Sb6
- 2.Qd4#
- 1...Rxc7!
- threat
- 1.Re5+?
- 1...Rxe5
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Bxe5
- 2.Qxc4#
- 1...Sxe5
- 2.Qd4#
- 1...dxe5!
- 1...Rxe5
- 1.Re7?
- threat
- 2.Bxc4#
- 2.Qxc4#
- 1...Qxe7
- 2.Qxc4#
- 1...Rxc7
- 2.Sxc7#
- 1...Rdxe7
- 2.Qxc4#
- 1...Rexe7
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Bxc3
- 2.Qxc4#
- 1...Be5
- 2.Qxc4#
- 1...Se6
- 2.Bg2#
- 2.Qxc4#
- 1...Sb2
- 2.Qe4#
- 1...Sa3
- 2.Qe4#
- 1...Se3
- 2.Qe4#
- 1...Sa5
- 2.Qe4#
- 1...Se5
- 2.Qd4#
- 1...Sb6
- 2.Qe4#
- 1...Se2
- 2.Bg2#
- 1...Sd3
- 2.Bg2#
- 1...Sd2!
- threat
- 1.Rxe8?
- threat
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Qxf5
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Bxc3
- 2.Qxc4#
- 1...Qe7
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Re7
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Be5
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Se6
- 2.Bg2#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Qg6
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Qg8
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Qh1
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Qh2
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Qh3
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Qh4
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Qh5
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Qh6
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Qf7
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Qg7
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Rf7
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Rg7
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Rd8
- 2.Bxc4#
- 2.Qxc4#
- 1...Bd4
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Bf6
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Bg7
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Sa5
- 2.Qe4#
- 1...Se5
- 2.Qd4#
- 1...Sb6
- 2.Qe4#
- 1...Sg2
- 2.Bxg2#
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Sh3
- 2.Bg2#
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Sh5
- 2.Bg2#
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Sg6
- 2.Bg2#
- 2.Bxc4#
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...Rxc7!
- threat
- 1.Bg2+?
- Keys
- 1.Bg7!
- threat
- 2.Qxc4#
- 1...Rxc7
- 2.Sxc7#
- 1...Re4
- 2.a8Q#
- 2.a8B#
- 1...Sb2
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Se3
- 2.Qd4#
- 1...Sa5
- 2.Qd4#
- 1...Se5
- 2.Qe4#
- 1...Sb6
- 2.Qd4#
- threat
- 1.Bg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 1
- Sets
- R(g);N_GUARD,P_PINR(C),XR(D)::P=Q
- R(g);N_GUARD::P=Q
- S(b);N_GUARD,S_CUTR(g)::B(A)
- Tries
- Try
- B(A);CHECK
- Refutation
- S(b);XB(A)
- Try
- B(E);
- Threat
- QAB1(F),XS(a)
- Vars
- R(g);N_GUARD::P=Q
- S(a);OGATE::QAR1(F)
- S(a);OGATE::QAB1(F)
- Refutation
- R(e);XP(K)
- Try
- B(E);XB(h)
- Threat
- QAB1(F),XS(a)
- Vars
- R(g);N_GUARD::P=Q
- S(a);OGATE::QAR1(F)
- S(a);OGATE::QAB1(F)
- Refutation
- R(e);XP(K)
- Try
- R(D);CHECK
- Vars
- B(h);XR(D)::QAB1(F),XS(a)
- S(a);OGATE,XR(D)::QAR1(F)
- Refutation
- P(d);XR(D)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- Q(f);XR(D)::QAB1(F),XS(a)
- R(e);XP(K)::S(I),XR(e)
- R(e);XR(D)::QAB1(F),XS(a)
- B(h);XB(E)::QAB1(F),XS(a)
- B(h);::QAB1(F),XS(a)
- S(a);OGATE::QAB1(F)
- S(a);OGATE::QAR1(F)
- S(b);N_GUARD::B(A)
- Refutation
- S(a);
- Try
- R(D);XR(g)
- Threat
- DUALS(4)
- Vars
- B(h);XB(E)::QAB1(F),XS(a)
- S(a);OGATE::QAB1(F)
- S(a);OGATE::QAR1(F)
- Refutation
- R(e);XP(K)
- Try
- Actual
- B(E);
- Threat
- QAB1(F),XS(a)
- Vars
- R(e);XP(K)::S(I),XR(e)
- R(g);N_GUARD::P=Q
- S(a);OGATE::QAR1(F)
- S(a);OGATE::QAB1(F)
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).