MESON Chess Problem Database
Problem Display
PID: 232416 (4R3/5n2/1q3rp1/3p4/1p1p3Q/1N1PBkPN/2R5/3n2K1 w - - 0 1)
Degener, Udo
Freie Presse, 1982
#2
9 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qa5
- 2.Sxd4#
- 1...Qc7
- 2.Sxd4#
- 1...Qd8
- 2.Sxd4#
- 1...Qb5
- 2.Sxd4#
- 1...Qa6
- 2.Sxd4#
- 1...Qc6
- 2.Sxd4#
- 1...Qd6
- 2.Sxd4#
- 1...Qb7
- 2.Sxd4#
- 1...Qb8
- 2.Sxd4#
- 1...Rf4
- 2.Qxf4#
- 1...Rc6
- 2.Qf4#
- 1...Rd6
- 2.Qf4#
- 1...Re6
- 2.Qf4#
- 1...Sb2
- 2.Rf2#
- 1...Sf2
- 2.Rxf2#
- 1...Sc3
- 2.Rf2#
- 1...Sxe3
- 2.Rf2#
- 1...Sg5
- 2.Sxg5#
- 1...Sd6
- 2.Sg5#
- 1...Sh6
- 2.Sg5#
- 1...Sd8
- 2.Sg5#
- 1...Sh8
- 2.Sg5#
- 1...Qa5
- Tries
- 1.Bf2?
- threat
- 2.Sd2#
- 1...Qe6
- 2.Sxd4#
- 1...Re6
- 2.Qf4#
- 1...Se5
- 2.Sg5#
- 1...Se3!
- threat
- 1.Bxd4?
- threat
- 2.Sd2#
- 1...Qxd4+
- 2.Sxd4#
- 1...Re6
- 2.Qf4#
- 1...Se3
- 2.Rf2#
- 2.Rxe3#
- 1...Se5
- 2.Sg5#
- 1...Qe6!
- threat
- 1.Bf4?
- threat
- 2.Sd2#
- 1...Qe6
- 2.Sxd4#
- 1...Se3
- 2.Rf2#
- 1...Se5
- 2.Sg5#
- 1...Re6!
- threat
- 1.Bg5?
- threat
- 2.Sd2#
- 1...Qe6
- 2.Sxd4#
- 1...Re6
- 2.Qf4#
- 1...Se3
- 2.Rf2#
- 1...Se5!
- threat
- 1.Bh6?
- threat
- 2.Sd2#
- 1...Qe6
- 2.Sxd4#
- 1...Re6
- 2.Qf4#
- 1...Se3
- 2.Rf2#
- 1...Se5!
- threat
- 1.Re4?
- threat
- 2.Qg4#
- 1...Sxe3
- 2.Rf2#
- 1...Se5
- 2.Sg5#
- 1...Qe6
- 2.Sxd4#
- 1...Rf4
- 2.Qxf4#
- 1...Sf2
- 2.Rxf2#
- 1...Sh6
- 2.Sg5#
- 1...dxe4!
- threat
- 1.Qh5+?
- 1...Kxg3
- 2.Rg2#
- 1...gxh5!
- 1...Kxg3
- 1.Bf2?
- Keys
- 1.Bc1!
- threat
- 2.Sd2#
- 1...Qe6
- 2.Sxd4#
- 1...Re6
- 2.Qf4#
- 1...Se3
- 2.Rf2#
- 1...Se5
- 2.Sg5#
- threat
- 1.Bc1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 20
- Sets
- Q(f);N_GUARD::S(C),XP(d)
- R(g);N_GUARD::QAR1(H),XR(g)
- R(g);N_GUARD::QAR1(H)
- S(a);N_GUARD::R1(B)
- S(a);N_GUARD::R1(B),XS(a)
- S(a);N_GUARD,XB(E)::R1(B)
- S(i);N_GUARD::S(G),XS(i)
- S(i);N_GUARD::S(G)
- Tries
- Try
- B(E);
- Threat
- S(C)
- Vars
- Q(f);N_GUARD::S(C),XP(d)
- R(g);N_GUARD::QAR1(H)
- S(i);N_GUARD::S(G)
- Refutation
- S(a);
- Try
- B(E);P_SPINB(E),XP(d)
- Threat
- S(C)
- Vars
- Q(f);CHECK,XB(E)::S(C),XQ(f)
- R(g);N_GUARD::QAR1(H)
- S(i);N_GUARD::S(G)
- Refutation
- Q(f);N_PINB(E)
- Try
- B(E);
- Threat
- S(C)
- Vars
- Q(f);N_GUARD::S(C),XP(d)
- S(a);N_GUARD::R1(B)
- S(i);N_GUARD::S(G)
- Refutation
- R(g);
- Try
- B(E);
- Threat
- S(C)
- Vars
- Q(f);N_GUARD::S(C),XP(d)
- R(g);N_GUARD::QAR1(H)
- S(a);N_GUARD::R1(B)
- Refutation
- S(i);
- Try
- B(E);
- Threat
- S(C)
- Vars
- Q(f);N_GUARD::S(C),XP(d)
- R(g);N_GUARD::QAR1(H)
- S(a);N_GUARD::R1(B)
- Refutation
- S(i);
- Try
- R(I);
- Threat
- QAB1(H)
- Vars
- S(a);N_GUARD,XB(E)::R1(B)
- S(i);N_GUARD::S(G)
- Q(f);N_GUARD::S(C),XP(d)
- R(g);N_GUARD::QAR1(H),XR(g)
- S(a);N_GUARD::R1(B),XS(a)
- Refutation
- P(e);XR(I)
- Try
- Q(H);CHECK
- Vars
- K(b);P-FLIGHT,XP(F)::R1(B)
- Refutation
- P(h);XQ(H)
- Try
- Actual
- B(E);
- Threat
- S(C)
- Vars
- Q(f);N_GUARD::S(C),XP(d)
- R(g);N_GUARD::QAR1(H)
- S(a);N_GUARD::R1(B)
- S(i);N_GUARD::S(G)
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).