MESON Chess Problem Database
Problem Display
PID: 234876 (2N3B1/6p1/3Pb1p1/3k2P1/KPR2Rn1/1nB2P2/4P3/3N4 w - - 0 1)
Gruber, Lutz-Dieter
Freie Presse, 1989
#2
12 + 6
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bf7
- 2.Bxf7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sd4
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sc5+
- 2.Rxc5#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Se3#
- 1...Sf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 1...Bf7
- Tries
- 1.Ka3?
- 1...Bf7
- 2.Bxf7#
- 1...Sd4
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Se3#
- 1...Sf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 1...Bxg8!
- 1...Bf7
- 1.Kxb3?
- threat
- 2.Rc5#
- 2.e4#
- 1...Bf7
- 2.Bxf7#
- 1...Sf2
- 2.Se3#
- 2.Rc5#
- 1...Se3
- 2.Sxe3#
- 2.Rc5#
- 1...Sf6
- 2.Se3#
- 2.Rc5#
- 1...Bxg8!
- threat
- 1.Ba1?
- 1...Sc5+
- 2.Rxc5#
- 1...Sxa1
- 2.Rc5#
- 1...Bf7
- 2.Bxf7#
- 1...Sd4
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Sc3#
- 2.Se3#
- 1...Sf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 1...Bxg8!
- 1...Sc5+
- 1.Bb2?
- 1...Sc5+
- 2.Rxc5#
- 1...Bf7
- 2.Bxf7#
- 1...Sd4
- 2.Rc5#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Sc3#
- 2.Se3#
- 1...Sf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 1...Bxg8!
- 1...Sc5+
- 1.Bd4?
- 1...Sc5+
- 2.Rxc5#
- 1...Kxc4
- 2.Sb6#
- 2.Bxe6#
- 1...Sxd4
- 2.Rc5#
- 1...Bf7
- 2.Bxf7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Se3#
- 1...Sf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 1...Bxg8!
- 1...Sc5+
- 1.Bf7?
- 1...Sc5+
- 2.Rxc5#
- 1...Sd4
- 2.Rc5#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Se3#
- 1...Sf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 1...Bxf7!
- 1...Sc5+
- 1.Rc7?
- threat
- 2.e4#
- 1...Sc5+
- 2.Rxc5#
- 1...Bf7
- 2.Bxf7#
- 1...Sd4
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sf2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf6
- 2.Se3#
- 1...Bxg8!
- threat
- 1.Rfd4+?
- 1...Sxd4
- 2.Rc5#
- 1...Ke5!
- 1...Sxd4
- 1.Rfe4?
- threat
- 2.Bxe6#
- 1...Sc5+
- 2.Rxc5#
- 1...Sd4
- 2.Rc5#
- 1...Bf7
- 2.Bxf7#
- 1...Se5
- 2.Se3#
- 1...Bxg8!
- threat
- 1.Rxg4?
- threat
- 2.Se3#
- 1...Sc5+
- 2.Rxc5#
- 1...Bf7
- 2.Bxf7#
- 1...Sd4
- 2.Rc5#
- 1...Bxg8!
- threat
- 1.Rf5+?
- 1...Kxc4
- 2.Sb6#
- 2.Bxe6#
- 1...Se5
- 2.Se3#
- 1...gxf5!
- 1...Kxc4
- 1.Rf6?
- threat
- 2.Bxe6#
- 1...Sc5+
- 2.Rxc5#
- 1...Kxc4
- 2.Sb6#
- 2.Bxe6#
- 1...Bxg8
- 2.Sb6#
- 1...Sxf6
- 2.Se3#
- 1...Sd4
- 2.Rc5#
- 1...Bf7
- 2.Sb6#
- 2.Bxf7#
- 1...gxf6!
- threat
- 1.Rf8?
- 1...Sc5+
- 2.Rxc5#
- 1...Kxc4
- 2.Sb6#
- 2.Bxe6#
- 1...Bf7
- 2.Bxf7#
- 1...Sd4
- 2.Rc5#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Se3#
- 1...Sf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 1...Bxg8!
- 1...Sc5+
- 1.fxg4?
- threat
- 2.Se3#
- 1...Sc5+
- 2.Rxc5#
- 1...Bf7
- 2.Bxf7#
- 1...Sd4
- 2.Rc5#
- 1...Bxg8!
- threat
- 1.d7?
- threat
- 2.d8Q#
- 2.d8R#
- 1...Sc5+
- 2.Rxc5#
- 1...Bf7
- 2.Bxf7#
- 1...Sd4
- 2.Rc5#
- 1...Sf2
- 2.Se3#
- 2.d8Q#
- 2.d8R#
- 1...Sa1
- 2.Rc5#
- 2.d8Q#
- 2.d8R#
- 1...Sc1
- 2.Rc5#
- 2.d8Q#
- 2.d8R#
- 1...Sd2
- 2.Rc5#
- 2.d8Q#
- 2.d8R#
- 1...Sa5
- 2.Rc5#
- 2.d8Q#
- 2.d8R#
- 1...Sh2
- 2.Se3#
- 2.d8Q#
- 2.d8R#
- 1...Se3
- 2.Sxe3#
- 2.d8Q#
- 2.d8R#
- 1...Se5
- 2.Se3#
- 1...Sf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 2.d8Q#
- 2.d8R#
- 1...Bxg8!
- threat
- 1.Ka3?
- Keys
- 1.Rf7!
- 1...Bd7+
- 2.Rxd7#
- 1...Sc5+
- 2.Rxc5#
- 1...Kxc4
- 2.Sb6#
- 1...Bxf7
- 2.Bxf7#
- 1...Bxc8
- 2.Rd7#
- 1...Bf5
- 2.Rxf5#
- 1...Sd4
- 2.Rc5#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sf2
- 2.Se3#
- 1...Sh2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Se3#
- 1...Sf6
- 2.Se3#
- 1...Sh6
- 2.Se3#
- 1...Bd7+
- 1.Rf7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- B(d);OGATEB::B(L),XB(d)
- S(a);N_GUARD::R1(G)
- S(a);CHECK,N_GUARD::R1(G),XS(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- B(d);OGATEB::B(L),XB(d)
- S(a);N_GUARD::R1(G)
- S(a);N_GUARD::R1(G),XS(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- Refutation
- B(d);N_SPINB(d),XB(L)
- Try
- K(E);S_FLIGHT,XS(a)
- Threat
- DUALS(2)
- Vars
- B(d);OGATEB::B(L),XB(d)
- Refutation
- B(d);N_SPINB(d),XB(L)
- Try
- B(C);
- Vars
- S(a);CHECK,N_GUARD::R1(G),XS(a)
- S(a);N_GUARD,XB(C)::R1(G)
- B(d);OGATEB::B(L),XB(d)
- S(a);N_GUARD::R1(G)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- Refutation
- B(d);N_SPINB(d),XB(L)
- Try
- B(C);
- Vars
- S(a);CHECK,N_GUARD::R1(G),XS(a)
- B(d);OGATEB::B(L),XB(d)
- S(a);N_GUARD::R1(G)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- Refutation
- B(d);N_SPINB(d),XB(L)
- Try
- B(C);
- Vars
- S(a);CHECK,N_GUARD::R1(G),XS(a)
- S(a);N_GUARD,XB(C)::R1(G)
- B(d);OGATEB::B(L),XB(d)
- S(a);N_GUARD::R1(G)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- Refutation
- B(d);N_SPINB(d),XB(L)
- Try
- B(L);
- Vars
- S(a);CHECK,N_GUARD::R1(G),XS(a)
- S(a);N_GUARD::R1(G)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- Refutation
- B(d);N_SPINB(d),XB(L)
- Try
- R(G);
- Threat
- P(B)
- Vars
- S(a);CHECK,N_GUARD::R1(G),XS(a)
- B(d);OGATEB::B(L),XB(d)
- S(a);N_GUARD::R1(G)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- Refutation
- B(d);N_SPINB(d),XB(L)
- Try
- R(H);CHECK
- Vars
- S(a);XR(H)::R1(G)
- Refutation
- K(c);N_SPINB(d),P-FLIGHT
- Try
- R(H);
- Threat
- B(L),XB(d)
- Vars
- S(a);CHECK,N_GUARD::R1(G),XS(a)
- S(a);N_GUARD::R1(G)
- B(d);OGATEB::B(L),XB(d)
- S(b);N_GUARD::S(A)
- Refutation
- B(d);N_SPINB(d),XB(L)
- Try
- R(H);XS(b)
- Threat
- S(A)
- Vars
- S(a);CHECK,N_GUARD::R1(G),XS(a)
- B(d);OGATEB::B(L),XB(d)
- S(a);N_GUARD::R1(G)
- Refutation
- B(d);N_SPINB(d),XB(L)
- Try
- R(H);CHECK
- Vars
- S(b);P_SPINS(b)::S(A)
- Refutation
- P(e);XR(H)
- Try
- R(H);
- Threat
- B(L),XB(d)
- Vars
- S(a);CHECK,N_GUARD::R1(G),XS(a)
- B(d);N_SPINB(d),XB(L)::S(K)
- S(b);N_GUARD,XR(H)::S(A)
- S(a);N_GUARD::R1(G)
- Refutation
- P(f);XR(H)
- Try
- R(H);
- Vars
- S(a);CHECK,N_GUARD::R1(G),XS(a)
- B(d);OGATEB::B(L),XB(d)
- S(a);N_GUARD::R1(G)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- Refutation
- B(d);N_SPINB(d),XB(L)
- Try
- P(D);XS(b)
- Threat
- S(A)
- Vars
- S(a);CHECK,N_GUARD::R1(G),XS(a)
- B(d);OGATEB::B(L),XB(d)
- S(a);N_GUARD::R1(G)
- Refutation
- B(d);N_SPINB(d),XB(L)
- Try
- P(J);
- Threat
- P=Q
- Vars
- S(a);CHECK,N_GUARD::R1(G),XS(a)
- B(d);OGATEB::B(L),XB(d)
- S(a);N_GUARD::R1(G)
- S(b);N_GUARD::S(A)
- Refutation
- B(d);N_SPINB(d),XB(L)
- Try
- Actual
- R(H);N_PINB(d)
- Vars
- B(d);CHECK,OGATEB::B(L)+R(H),XB(d)
- S(a);CHECK,N_GUARD::R1(G),XS(a)
- K(c);S_FLIGHT,XR(G)::S(K)
- B(d);OGATE,P_SPINB(d),XR(H)::B(L),XB(d)
- B(d);OGATEB,XS(K)::B(L)+R(H)
- B(d);::B(L)+R(H),DCHECK,XB(d)
- S(a);N_GUARD::R1(G)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
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).