MESON Chess Problem Database
Problem Display
PID: 243744 (5R2/2bPr3/5N1R/1p2kPB1/1r4pK/3QPbp1/8/8 w - - 0 1)
Berg, Wolfgang
Schach, 1984
#2
9 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Bf4#
- 1...Rb2
- 2.Bf4#
- 1...Rb3
- 2.Bf4#
- 1...Re4
- 2.Qd5#
- 1...Rf4
- 2.Bxf4#
- 2.exf4#
- 1...Rxd7
- 2.Sxd7#
- 1...Re8
- 2.Rxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bd1
- 2.Qd5#
- 1...Be2
- 2.Qd5#
- 1...Be4
- 2.Sxg4#
- 1...Bd5
- 2.Qxd5#
- 1...Rb1
- Tries
- 1.Se4?
- threat
- 2.Bf4#
- 1...Rxe4
- 2.Qxb5#
- 1...Rd4
- 2.Qxd4#
- 1...Rf7!
- threat
- 1.Sxg4+?
- 1...Bxg4
- 2.Bf6#
- 1...Rxg4+!
- 1...Bxg4
- 1.Sh5?
- threat
- 2.Bf6#
- 1...Rd4
- 2.Qxd4#
- 1...Re4
- 2.Qxb5#
- 1...Re6
- 2.Rxe6#
- 1...Rf7
- 2.Re6#
- 1...Be4
- 2.Bf4#
- 1...Bd5!
- threat
- 1.Sh7?
- threat
- 2.Bf6#
- 1...Rd4
- 2.Qxd4#
- 1...Re4
- 2.Qxb5#
- 1...Re6
- 2.Rxe6#
- 1...Rf7
- 2.Re6#
- 1...Be4
- 2.Bf4#
- 1...Bd5!
- threat
- 1.Sg8?
- threat
- 2.Bf6#
- 1...Rd4
- 2.Qxd4#
- 1...Re4
- 2.Qxb5#
- 1...Re6
- 2.Rxe6#
- 1...Rf7
- 2.Re6#
- 1...Be4
- 2.Bf4#
- 1...Bd5!
- threat
- 1.Qxb5+?
- 1...Kd6
- 2.Se4#
- 2.Se8#
- 1...Bd5
- 2.Qxd5#
- 1...Rxb5!
- 1...Kd6
- 1.e4?
- threat
- 2.Qd5#
- 1...Rxd7
- 2.Sxd7#
- 1...Bxe4
- 2.Sxg4#
- 1...Rd4!
- threat
- 1.Se4?
- Keys
- 1.Se8!
- threat
- 2.Bf6#
- 1...Rd4
- 2.Qxd4#
- 1...Re4
- 2.Qxb5#
- 1...Re6
- 2.Rxe6#
- 1...Rf7
- 2.Re6#
- 1...Be4
- 2.Bf4#
- threat
- 1.Se8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- R(c);N_GUARD::B(E)
- R(c);S_CUTB(a)::QAR1(A)
- R(h);XP(H)::S(F),XR(h)
- B(a);N_GUARD::QAR1(A)
- B(a);N_GUARD,S_CUTR(c)::S(F),XP(d)
- B(a);N_GUARD::QAR1(A),XB(a)
- Tries
- Try
- S(F);
- Threat
- B(E)
- Vars
- R(c);N_GUARD,SBLOCK,XS(F)::QAR(A),XP(e)
- R(c);N_GUARD::QAB1(A),XR(c)
- Refutation
- R(h);
- Try
- S(F);CHECK,P_SPINS(F),XP(d)
- Vars
- B(a);XS(F)::B(E)
- Refutation
- R(c);CHECK,XS(F)
- Try
- S(F);
- Threat
- B(E)
- Vars
- R(c);N_GUARD::QAB1(A),XR(c)
- R(c);N_GUARD,SBLOCK,S_CUTB(a)::QAR(A),XP(e)
- R(h);N_GUARD::R1(G),XR(h)
- R(h);N_GUARD::R1(G)
- B(a);S_CUTR(c)::B(E)
- Refutation
- B(a);
- Try
- S(F);
- Threat
- B(E)
- Vars
- R(c);N_GUARD::QAB1(A),XR(c)
- R(c);N_GUARD,SBLOCK,S_CUTB(a)::QAR(A),XP(e)
- R(h);N_GUARD::R1(G),XR(h)
- R(h);N_GUARD::R1(G)
- B(a);S_CUTR(c)::B(E)
- Refutation
- B(a);
- Try
- S(F);
- Threat
- B(E)
- Vars
- R(c);N_GUARD::QAB1(A),XR(c)
- R(c);N_GUARD,SBLOCK,S_CUTB(a)::QAR(A),XP(e)
- R(h);N_GUARD::R1(G),XR(h)
- R(h);N_GUARD::R1(G)
- B(a);S_CUTR(c)::B(E)
- Refutation
- B(a);
- Try
- Q(A);CHECK,XP(e)
- Vars
- B(a);N_GUARD,P_SPINB(a)::QAR1(A),XB(a)
- Refutation
- R(c);XQ(A)
- Try
- P(B);
- Threat
- QAR1(A)
- Vars
- R(h);XP(H)::S(F),XR(h)
- B(a);N_GUARD,XP(B)::S(F),XP(d)
- Refutation
- R(c);
- Try
- Actual
- S(F);
- Threat
- B(E)
- Vars
- R(c);N_GUARD::QAB1(A),XR(c)
- R(c);N_GUARD,SBLOCK,S_CUTB(a)::QAR(A),XP(e)
- R(h);N_GUARD::R1(G),XR(h)
- R(h);N_GUARD::R1(G)
- B(a);S_CUTR(c)::B(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).