MESON Chess Problem Database
Problem Display
PID: 141534 (5nQ1/8/1p2rb2/nRq2kPK/R4N1p/3N1P1b/6PB/1B6 w - - 0 1)
du Gres, Jacques
Probleemblad, 1977
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sxe5#
- 1...Re4
- 2.fxe4#
- 1...Bg4+
- 2.fxg4#
- 1...Be5
- 2.Sxc5#
- 1...Bxg5
- 2.Qxg5#
- 1...Sg6
- 2.Qxe6#
- 2.Qxg6#
- 1...Sd7
- 2.Qxe6#
- 2.Qh7#
- 2.Qg6#
- 1...Sh7
- 2.Qxe6#
- 2.Qxh7#
- 2.Qg6#
- 1...Qe5
- Tries
- 1.Sb4+?
- 1...Ke5
- 2.Se2#
- 2.Sxe6#
- 1...Re4!
- 1...Ke5
- 1.Sxc5+?
- 1...Ke5
- 2.Se4#
- 2.Sb7#
- 1...Re4!
- 1...Ke5
- 1.Se5+?
- 1...Qc2
- 2.Bxc2#
- 1...Kxe5!
- 1...Qc2
- 1.Sxh3?
- threat
- 2.Rf4#
- 1...Bxg5
- 2.Qxg5#
- 1...Re4
- 2.fxe4#
- 1...Be5
- 2.Sxc5#
- 1...Sc4
- 2.Se5#
- 1...Sg6
- 2.Qxg6#
- 1...Bd4!
- threat
- 1.Sd5?
- threat
- 2.Rf4#
- 1...Bg4+
- 2.fxg4#
- 1...Bxg5
- 2.Qxg5#
- 1...Re4
- 2.fxe4#
- 1...Qe3
- 2.Sxe3#
- 2.Se7#
- 1...Qb4
- 2.Se3#
- 2.Se7#
- 1...Qd4
- 2.Se3#
- 2.Se7#
- 1...Qd6
- 2.Se5#
- 2.Se3#
- 2.Se7#
- 1...Qc1
- 2.Se3#
- 2.Se7#
- 1...Qc4
- 2.Se3#
- 2.Se7#
- 1...Qc7
- 2.Se3#
- 2.Se7#
- 1...Be5
- 2.Sxc5#
- 1...Sc4
- 2.Se5#
- 1...Sg6
- 2.Qxg6#
- 1...Bd4!
- threat
- 1.Sxe6?
- threat
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sdxc5#
- 2.Rf4#
- 1...Bg4+
- 2.fxg4#
- 1...Qxb5
- 2.Rf4#
- 1...Sxe6
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sxc5#
- 2.Qh7#
- 2.Qg6#
- 1...Qd5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Rf4#
- 1...Qe5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sdf4#
- 2.Sxe5#
- 2.Sd4#
- 2.Rf4#
- 1...Bb2
- 2.Sc1#
- 2.Se1#
- 2.Sxb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sdxc5#
- 2.Rf4#
- 1...Bd4
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sdxc5#
- 2.Sxd4#
- 1...Be5
- 2.Sdxc5#
- 1...Sc4
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sdxc5#
- 2.Se5#
- 1...Sg6
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sdxc5#
- 1...Bxg5!
- threat
- 1.Sg6?
- threat
- 2.Sxh4#
- 2.Rf4#
- 1...Bg4+
- 2.fxg4#
- 1...Sxg6
- 2.Qxg6#
- 1...Re4
- 2.fxe4#
- 1...Bd4
- 2.Sxh4#
- 1...Be5
- 2.Sxc5#
- 2.Sxh4#
- 1...Sc4
- 2.Sde5#
- 2.Sxh4#
- 1...Bxg5!
- threat
- 1.Rxc5+?
- 1...Re5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sxe5#
- 1...Be5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sxe5#
- 1...bxc5!
- 1...Re5
- 1.Qh7+?
- 1...Sg6
- 2.Qxg6#
- 1...Sxh7!
- 1...Sg6
- 1.g4+?
- 1...Bxg4+
- 2.fxg4#
- 1...hxg4 ep!
- 1...Bxg4+
- 1.Sb4+?
- Keys
- 1.Se2!
- threat
- 2.Rf4#
- 1...Bg4+
- 2.fxg4#
- 1...Bxg5
- 2.Qxg5#
- 1...Re4
- 2.fxe4#
- 1...Bd4
- 2.Sxd4#
- 1...Be5
- 2.Sxc5#
- 1...Sc4
- 2.Se5#
- 1...Sg6
- 2.Qxg6#
- threat
- 1.Se2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(g);OGATE::P(E),XR(g)
- B(a);CHECK,OGATE::P(E),XB(a)
- B(h);N_SPINQ(d),SBLOCK,S_CUTR(g)::B(A)+S(D),XQ(d)
- B(h);OGATE,XP(I)::QAR1(K),XB(h)
- Tries
- Try
- S(D);CHECK
- Refutation
- R(g);P_SPINR(g)
- Try
- S(D);CHECK,XQ(d)
- Refutation
- R(g);P_SPINR(g)
- Try
- S(D);CHECK,N_PINQ(d)
- Vars
- Q(d);N_GUARD,P_SPINQ(d)::B(A),XQ(d)
- Refutation
- K(e);P-FLIGHT,P_SPINQ(d),XS(D)
- Try
- S(G);XB(a)
- Threat
- R1(F)
- Vars
- B(h);OGATE,XP(I)::QAR1(K),XB(h)
- R(g);OGATE::P(E),XR(g)
- B(h);N_SPINQ(d),S_CUTR(g)::B(A)+S(D),XQ(d)
- S(c);::B(A)+S(D)
- S(i);N_GUARD::QAB1(K),XS(i)
- Refutation
- B(h);
- Try
- S(G);N_PINQ(d)
- Threat
- R1(F)
- Vars
- B(a);CHECK,OGATE::P(E),XB(a)
- B(h);OGATE,XP(I)::QAR1(K),XB(h)
- R(g);OGATE::P(E),XR(g)
- B(h);S_CUTR(g)::B(A)+S(D),XQ(d)
- S(c);S_CUTQ(d)::B(A)+S(D)
- S(i);N_GUARD::QAB1(K),XS(i)
- Refutation
- B(h);
- Try
- S(G);XR(g)
- Threat
- DUALS(7)
- Vars
- B(a);CHECK,OGATE::P(E),XB(a)
- Q(d);N_SPINQ(d),XR(H)::R1(F)
- B(h);N_SPINQ(d)::B(A)+S(D),XQ(d)
- Refutation
- B(h);XP(I)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,OGATE::P(E),XB(a)
- S(i);OGATE,XS(G)::QAB1(K),XS(i)
- R(g);OGATE::P(E),XR(g)
- B(h);::S(G),XP(b)
- Refutation
- B(h);XP(I)
- Try
- R(H);CHECK,XQ(d)
- Refutation
- P(f);XR(H)
- Try
- Q(K);CHECK
- Vars
- S(i);N_GUARD,P_SPINS(i)::QAB1(K),XS(i)
- Refutation
- S(i);XQ(K)
- Try
- P(B);CHECK
- Vars
- B(a);CHECK,OGATE,XP(B)::P(E),XB(a)
- Refutation
- P(b);EP,XP(B)
- Try
- Actual
- S(G);
- Threat
- R1(F)
- Vars
- B(a);CHECK,OGATE::P(E),XB(a)
- B(h);OGATE,XP(I)::QAR1(K),XB(h)
- R(g);OGATE::P(E),XR(g)
- B(h);N_GUARD::S(G),XB(h)
- B(h);N_SPINQ(d),S_CUTR(g)::B(A)+S(D),XQ(d)
- S(c);::B(A)+S(D)
- S(i);N_GUARD::QAB1(K),XS(i)
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).