MESON Chess Problem Database
Problem Display
PID: 132239 (1b6/4R1P1/B2P2QP/1np2N1K/2P3RP/2rk2P1/2br4/1N3n2 w - - 0 1)
van Gool, Johann Christoffel
Knobi's Knobelecke, 1993
#2
13 + 8
| 6114 | Problemschach-Jahrbuch (1994) | 1995 |
SOLUTION
- SOUND
- Sets
- 1...Re2
- 2.Se3#
- 1...Rxc4
- 2.Sd4#
- 1...Bxd6
- 2.Sxd6#
- 1...Sh2
- 2.Re3#
- 1...Se3
- 2.Rxe3#
- 1...Sxg3+
- 2.Sxg3#
- 1...Sa3
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sxd6
- 2.Sxd6#
- 1...Sa7
- 2.Sd4#
- 1...Sc7
- 2.Sd4#
- 1...Re2
- Tries
- 1.Bxb5?
- threat
- 2.Sd4#
- 1...Sxg3+
- 2.Sxg3#
- 2.Rxg3#
- 1...Se3
- 2.Rxe3#
- 1...Re2
- 2.Se3#
- 1...Rf2!
- threat
- 1.Re5?
- threat
- 2.Se7#
- 1...Sxg3+
- 2.Sxg3#
- 1...Rxc4
- 2.Sd4#
- 1...Sxd6
- 2.Sxd6#
- 1...Se3
- 2.Rxe3#
- 1...Re2
- 2.Se3#
- 1...Sd4
- 2.Sxd4#
- 1...Rf2!
- threat
- 1.Re6?
- threat
- 2.Se7#
- 1...Sxg3+
- 2.Sxg3#
- 1...Rxc4
- 2.Sd4#
- 1...Sxd6
- 2.Sxd6#
- 1...Se3
- 2.Rxe3#
- 1...Re2
- 2.Se3#
- 1...Sd4
- 2.Sxd4#
- 1...Rf2!
- threat
- 1.h7?
- threat
- 2.Sh6#
- 1...Sxg3+
- 2.Sxg3#
- 1...Rxc4
- 2.Sd4#
- 1...Sxd6
- 2.Sxd6#
- 1...Se3
- 2.Rxe3#
- 1...Re2
- 2.Se3#
- 1...Sd4
- 2.Sxd4#
- 1...Rf2!
- threat
- 1.g8Q?
- threat
- 2.Sd4#
- 2.Sg7#
- 1...Sxg3+
- 2.Sxg3#
- 2.Rxg3#
- 1...Rxc4
- 2.Sd4#
- 2.Qxc4#
- 1...Sxd6
- 2.Sxd6#
- 2.Qd5#
- 1...Se3
- 2.Rxe3#
- 1...Re2
- 2.Se3#
- 1...Sd4
- 2.Sxd4#
- 1...Rf2!
- threat
- 1.g8S?
- threat
- 2.Sg7#
- 1...Sxg3+
- 2.Sxg3#
- 1...Rxc4
- 2.Sd4#
- 1...Sxd6
- 2.Sxd6#
- 1...Se3
- 2.Rxe3#
- 1...Re2
- 2.Se3#
- 1...Sd4
- 2.Sxd4#
- 1...Rf2!
- threat
- 1.g8B?
- threat
- 2.Sd4#
- 2.Sg7#
- 1...Sxg3+
- 2.Sxg3#
- 2.Rxg3#
- 1...Rxc4
- 2.Sd4#
- 2.Bxc4#
- 1...Sxd6
- 2.Sxd6#
- 1...Se3
- 2.Rxe3#
- 1...Re2
- 2.Se3#
- 1...Sd4
- 2.Sxd4#
- 1...Rf2!
- threat
- 1.g8R?
- threat
- 2.Sg7#
- 1...Sxg3+
- 2.Sxg3#
- 1...Rxc4
- 2.Sd4#
- 1...Sxd6
- 2.Sxd6#
- 1...Se3
- 2.Rxe3#
- 1...Re2
- 2.Se3#
- 1...Sd4
- 2.Sxd4#
- 1...Rf2!
- threat
- 1.Bxb5?
- Keys
- 1.Qe6!
- threat
- 2.Qe4#
- 1...Sxg3+
- 2.Rxg3#
- 1...Rxc4
- 2.Qxc4#
- 1...Sxd6
- 2.Qd5#
- 1...Se3
- 2.Qxe3#
- 1...Re2
- 2.Qxe2#
- threat
- 1.Qe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- R(c);SBLOCK::QAB(J)+S(F)
- R(d);SBLOCK,XP(C)::QAB(J)+S(F)
- B(h);XP(I)::QAB(J)+S(F),XB(h)
- S(a);N_GUARD::R1(L)
- S(a);N_GUARD::R1(L),XS(a)
- S(a);CHECK,XP(B)::QAB(J)+S(F),XS(a)
- S(f);::QAB(J)+S(F)
- S(f);::QAB(J)+S(F),XS(f)
- S(f);XP(I)::QAB(J)+S(F),XS(f)
- Tries
- Try
- B(H);XS(f)
- Threat
- QAB(J)+S(F)
- Vars
- S(a);N_GUARD::R1(L),XS(a)
- R(c);SBLOCK::QAB(J)+S(F)
- Refutation
- R(c);
- Try
- R(L);
- Threat
- QAB(J)+S(F)
- Vars
- S(a);CHECK,XP(B)::QAB(J)+S(F),XS(a)
- R(d);SBLOCK,XP(C)::QAB(J)+S(F)
- S(f);XP(I)::QAB(J)+S(F),XS(f)
- S(a);N_GUARD::R1(L),XS(a)
- R(c);SBLOCK::QAB(J)+S(F)
- S(f);::QAB(J)+S(F),XS(f)
- Refutation
- R(c);
- Try
- R(L);
- Threat
- QAB(J)+S(F)
- Vars
- S(a);CHECK,XP(B)::QAB(J)+S(F),XS(a)
- R(d);SBLOCK,XP(C)::QAB(J)+S(F)
- S(f);XP(I)::QAB(J)+S(F),XS(f)
- S(a);N_GUARD::R1(L),XS(a)
- R(c);SBLOCK::QAB(J)+S(F)
- S(f);::QAB(J)+S(F),XS(f)
- Refutation
- R(c);
- Try
- P(K);
- Threat
- QAB(J)+S(F)
- Vars
- S(a);CHECK,XP(B)::QAB(J)+S(F),XS(a)
- R(d);SBLOCK,XP(C)::QAB(J)+S(F)
- S(f);XP(I)::QAB(J)+S(F),XS(f)
- S(a);N_GUARD::R1(L),XS(a)
- R(c);SBLOCK::QAB(J)+S(F)
- S(f);::QAB(J)+S(F),XS(f)
- Refutation
- R(c);
- Try
- P(M);
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD::R1(L),XS(a)
- R(c);SBLOCK::QAB(J)+S(F)
- S(f);::QAB(J)+S(F),XS(f)
- Refutation
- R(c);
- Try
- P(M);
- Threat
- QAB(J)+S(F)
- Vars
- S(a);CHECK,XP(B)::QAB(J)+S(F),XS(a)
- R(d);SBLOCK,XP(C)::QAB(J)+S(F)
- S(f);XP(I)::QAB(J)+S(F),XS(f)
- S(a);N_GUARD::R1(L),XS(a)
- R(c);SBLOCK::QAB(J)+S(F)
- S(f);::QAB(J)+S(F),XS(f)
- Refutation
- R(c);
- Try
- P(M);
- Threat
- DUALS(2)
- Vars
- S(f);XP(I)::QAB(J)+S(F),XS(f)
- S(a);N_GUARD::R1(L),XS(a)
- R(c);SBLOCK::QAB(J)+S(F)
- S(f);::QAB(J)+S(F),XS(f)
- Refutation
- R(c);
- Try
- P(M);
- Threat
- QAB(J)+S(F)
- Vars
- S(a);CHECK,XP(B)::QAB(J)+S(F),XS(a)
- R(d);SBLOCK,XP(C)::QAB(J)+S(F)
- S(f);XP(I)::QAB(J)+S(F),XS(f)
- S(a);N_GUARD::R1(L),XS(a)
- R(c);SBLOCK::QAB(J)+S(F)
- S(f);::QAB(J)+S(F),XS(f)
- Refutation
- R(c);
- Try
- Actual
- Q(J);
- Threat
- QAB1(J)
- Vars
- S(a);CHECK,OGATE,XP(B)::R(D),XS(a)
- R(d);OGATE,XP(C)::QAB1(J),XR(d)
- S(f);N_GUARD,XP(I)::QAR2(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- R(c);N_GUARD::QAB1(J),XR(c)
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).