MESON Chess Problem Database
Problem Display
PID: 263151 (5r1B/1p1R4/PP2pb2/3Nkp2/2ppN2R/K1p2pp1/2P5/1Q5b w - - 0 1)
Doukhan, Gerard
Loustau, Jean-Marc
SuperProblem, 2021
#2
10 + 12
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Bxf6#
- 1...Rb8
- 2.Bxf6#
- 1...Rc8
- 2.Bxf6#
- 1...Rd8
- 2.Bxf6#
- 1...Re8
- 2.Bxf6#
- 1...Rg8
- 2.Bxf6#
- 1...fxe4
- 2.Rh5#
- 1...exd5
- 2.Re7#
- 1...Ra8
- Tries
- 1.Sd2?
- threat
- 2.Sxc4#
- 2.Qe1#
- 1...exd5
- 2.Qe1#
- 1...f4
- 2.Rh5#
- 1...Rc8
- 2.Bxf6#
- 2.Qe1#
- 1...f2
- 2.Sxc4#
- 1...cxd2!
- threat
- 1.Sf2?
- threat
- 2.Qe1#
- 1...f4
- 2.Rh5#
- 1...gxf2!
- threat
- 1.Sexc3?
- threat
- 2.Qe1#
- 1...f4
- 2.Rh5#
- 1...f2!
- threat
- 1.Sc5?
- threat
- 2.Qe1#
- 1...f4
- 2.Rh5#
- 1...f2!
- threat
- 1.Sexf6?
- threat
- 2.Qe1#
- 1...f4
- 2.Rh5#
- 1...f2!
- threat
- 1.Sdxc3?
- threat
- 2.Qb5#
- 1...Rc8
- 2.Bxf6#
- 1...bxa6!
- threat
- 1.Se3?
- threat
- 2.Sxc4#
- 2.Qb5#
- 1...dxe3
- 2.Qb5#
- 1...fxe4
- 2.Qb5#
- 1...bxa6
- 2.Sxc4#
- 1...Rc8
- 2.Bxf6#
- 1...f4!
- threat
- 1.Sf4?
- threat
- 2.Sg6#
- 1...Kxe4
- 2.Qe1#
- 1...fxe4
- 2.Qb5#
- 1...Rg8!
- threat
- 1.Sdxf6?
- threat
- 2.Qb5#
- 1...Rc8
- 2.Se8#
- 2.Sg8#
- 1...bxa6!
- threat
- 1.Se7?
- threat
- 2.Sg6#
- 2.Qb5#
- 1...fxe4
- 2.Qb5#
- 1...bxa6
- 2.Sc6#
- 2.Sg6#
- 1...Rc8
- 2.Sg6#
- 2.Bxf6#
- 1...Rg8
- 2.Bxf6#
- 2.Qb5#
- 1...f4!
- threat
- 1.Qc1?
- threat
- 2.Qf4#
- 1...exd5
- 2.Re7#
- 1...f4
- 2.Qxf4#
- 1...d3!
- threat
- 1.Qe1?
- threat
- 2.Sd2#
- 2.Sf2#
- 2.Sexc3#
- 2.Sxg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sexf6#
- 1...Bxh8
- 2.Sd2#
- 2.Sf2#
- 2.Sexc3#
- 2.Sxg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sef6#
- 1...fxe4
- 2.Rh5#
- 2.Qxe4#
- 1...f4
- 2.Sxg3#
- 2.Rh5#
- 1...Bg7
- 2.Sd2#
- 2.Sf2#
- 2.Sexc3#
- 2.Sxg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sef6#
- 1...g2
- 2.Sd2#
- 2.Sf2#
- 2.Sexc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sexf6#
- 1...f2!
- threat
- 1.Qb4?
- threat
- 2.Qd6#
- 1...fxe4
- 2.Rh5#
- 1...d3
- 2.Qxc3#
- 1...f4!
- threat
- 1.Qb5?
- threat
- 2.Sdxc3#
- 2.Se3#
- 2.Sb4#
- 2.Sdxf6#
- 2.Sc7#
- 2.Se7#
- 1...Bxh8
- 2.Sdxc3#
- 2.Se3#
- 2.Sb4#
- 2.Sdf6#
- 2.Sc7#
- 2.Se7#
- 1...exd5
- 2.Re7#
- 2.Qxd5#
- 1...f4
- 2.Sdxc3#
- 2.Sdxf6#
- 1...Rc8
- 2.Sc7#
- 2.Bxf6#
- 1...Bg7
- 2.Sdxc3#
- 2.Se3#
- 2.Sb4#
- 2.Sdf6#
- 2.Sc7#
- 2.Se7#
- 1...bxa6!
- threat
- 1.Sd2?
- Keys
- 1.Sd6!
- threat
- 2.Sxc4#
- 1...Kxd5
- 2.Qb5#
- 1...exd5
- 2.Qe1#
- 1...Rc8
- 2.Sf7#
- 1...f4
- 2.Rh5#
- threat
- 1.Sd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(l);N_GUARD,P_PINP(G)::B(J),XB(j)
- R(l);N_GUARD::B(J),XB(j)
- P(h);OGATEB,SBLOCK,XS(D)::R(E)
- P(i);OGATEB,SBLOCK,XS(F)::R(I)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- P(i);XS(F)::QAR(A)
- P(h);OGATEB::R(E)
- P(c);::S(D),XP(e)
- Refutation
- P(b);XS(D)
- Try
- S(D);
- Threat
- QAR(A)
- Vars
- P(h);OGATEB::R(E)
- Refutation
- P(d);XS(D)
- Try
- S(D);XP(b)
- Threat
- QAR(A)
- Vars
- P(h);OGATEB::R(E)
- Refutation
- P(c);
- Try
- S(D);
- Threat
- QAR(A)
- Vars
- P(h);OGATEB::R(E)
- Refutation
- P(c);
- Try
- S(D);XB(j)
- Threat
- QAR(A)
- Vars
- P(h);OGATEB::R(E)
- Refutation
- P(c);
- Try
- S(F);XP(b)
- Threat
- QAR(A)
- Vars
- R(l);N_GUARD::B(J),XB(j)
- Refutation
- P(k);XP(G)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- P(f);XS(F)::QAR(A)
- P(h);XS(D)::QAR(A)
- P(k);XP(G)::S(F),XP(e)
- R(l);N_GUARD::B(J),XB(j)
- Refutation
- P(h);
- Try
- S(F);
- Threat
- S(F)
- Vars
- K(g);N_SPINB(j),OGATEB,P-FLIGHT,XS(D)::QAR(A)
- P(h);SBLOCK,XS(D)::QAR(A)
- Refutation
- R(l);
- Try
- S(F);XB(j)
- Threat
- QAR(A)
- Refutation
- P(k);XP(G)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- P(h);XS(D)::QAR(A)
- Refutation
- P(h);
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- P(i);OGATEB,SBLOCK,XS(F)::R(I)
- P(h);::QAB1(A),XP(h)
- Refutation
- P(f);
- Try
- Q(A);
- Threat
- DUALS(7)
- Refutation
- P(c);
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- P(h);OGATEB,SBLOCK,XS(D)::R(E)
- P(f);OGATEB::QAB(A),XP(b)
- Refutation
- P(h);
- Try
- Q(A);
- Threat
- DUALS(6)
- Refutation
- P(k);XP(G)
- Try
- Actual
- S(D);
- Threat
- S(D),XP(e)
- Vars
- K(g);N_SPINB(j),OGATEB,P-FLIGHT,XS(F)::QAR2(A)
- P(i);SBLOCK,XS(F)::QAR(A)
- R(l);N_GUARD::S(D)
- P(h);OGATEB::R(E)
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).