MESON Chess Problem Database
Problem Display
PID: 213051 (rB3Qb1/2RPpn2/8/5PbK/2N2kpn/p4P2/1P2R2P/1B2N3 w - - 0 1)
Degener, Udo
Degenkolbe, Mirko
1st Prize, Suomen Shakki, 1992
#2
13 + 9
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sxf3
- 2.Sg2#
- 1...Sxf5
- 2.Re4#
- 1...Se5
- 2.Re4#
- 1...Sh6
- 2.Re4#
- 1...Sd8
- 2.Re4#
- 1...Sh8
- 2.Re4#
- 1...Sxf3
- Tries
- 1.Sxa3?
- threat
- 2.Rc4#
- 1...Se5
- 2.Re4#
- 1...Sd6!
- threat
- 1.Sa5?
- threat
- 2.Rc4#
- 1...Se5
- 2.Re4#
- 1...Sd6!
- threat
- 1.Se5?
- threat
- 2.Rc4#
- 1...Sxf3
- 2.Sg2#
- 2.Sg6#
- 1...Sxf5
- 2.Sg2#
- 2.S1d3#
- 2.S5d3#
- 2.Sg6#
- 2.Re4#
- 1...Sxe5
- 2.Re4#
- 1...Sd6
- 2.S1d3#
- 2.S5d3#
- 1...Sh6
- 2.S1d3#
- 2.S5d3#
- 2.Re4#
- 1...Sd8
- 2.S1d3#
- 2.S5d3#
- 2.Re4#
- 1...Sh8
- 2.S1d3#
- 2.S5d3#
- 2.Re4#
- 1...Ra4!
- threat
- 1.Sb6?
- threat
- 2.Sd5#
- 2.Rc4#
- 1...Ra5
- 2.Rc4#
- 1...Se5
- 2.Re4#
- 1...Sh6
- 2.Re4#
- 2.Rc4#
- 1...Sd8
- 2.Re4#
- 2.Rc4#
- 1...Sh8
- 2.Re4#
- 2.Rc4#
- 1...e6
- 2.Rc4#
- 2.Qb4#
- 1...Sd6!
- threat
- 1.Rc5+?
- 1...Rxb8
- 2.Re4#
- 1...Se5
- 2.Bxe5#
- 2.Re4#
- 1...Sd6
- 2.Re4#
- 1...e5!
- 1...Rxb8
- 1.Qxe7?
- threat
- 2.Qe3#
- 2.Qe4#
- 1...Sxf5
- 2.Re4#
- 2.Qe4#
- 1...Sg2
- 2.Qe4#
- 1...Se5
- 2.Qxg5#
- 2.Qxe5#
- 1...Sd6
- 2.Qxg5#
- 2.Qxd6#
- 2.Qe3#
- 2.Qe5#
- 1...Bxe7!
- threat
- 1.Qg7?
- threat
- 2.Qd4#
- 1...Sxf3
- 2.Sg2#
- 1...Sxf5
- 2.Re4#
- 1...Bf6
- 2.Qxg4#
- 1...Se5
- 2.Qxe5#
- 2.Qxg5#
- 1...Sd6
- 2.Qe5#
- 2.Qxg5#
- 1...e5!
- threat
- 1.d8Q?
- threat
- 2.Qd2#
- 2.Qd4#
- 1...Sxf3
- 2.Sg2#
- 1...Sxf5
- 2.Re4#
- 1...Sxd8
- 2.Re4#
- 1...e5
- 2.Qd2#
- 1...Bf6
- 2.Qd2#
- 1...Sg2
- 2.Qd4#
- 1...Sd6!
- threat
- 1.Sxa3?
- Keys
- 1.Sd2!
- threat
- 2.Rc4#
- 1...Se5
- 2.Re4#
- 1...Sd6
- 2.Sd3#
- threat
- 1.Sd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- S(d);N_GUARD,SBLOCK,XP(F)::S(B)
- S(d);SBLOCK,XP(H)::R1(D)
- S(g);::R1(D)
- Tries
- Try
- S(G);XP(a)
- Threat
- B(L)+R(J),DCHECK
- Vars
- S(g);::R1(D)
- Refutation
- S(g);
- Try
- S(G);
- Threat
- B(L)+R(J),DCHECK
- Vars
- S(g);::R1(D)
- Refutation
- S(g);
- Try
- S(G);
- Threat
- R(J)
- Vars
- S(g);XS(G)::R1(D)
- Refutation
- R(h);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(h);::B(L)+R(J),DCHECK
- S(g);::R1(D)
- Refutation
- S(g);
- Try
- R(J);CHECK
- Vars
- R(h);XB(L)::R1(D)
- S(g);P_SPINS(g)::R1(D)
- Refutation
- P(f);P_SPINP(f)
- Try
- Q(M);XP(f)
- Threat
- DUALS(2)
- Vars
- S(d);::QAR1(M)
- Refutation
- B(e);XQ(M)
- Try
- Q(M);
- Threat
- QAR2(M)
- Vars
- S(d);N_GUARD,SBLOCK,XP(F)::S(B)
- S(d);SBLOCK,XP(H)::R1(D)
- B(e);OGATE::QAR1(M),XP(c)
- Refutation
- P(f);
- Try
- P(K);
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD,SBLOCK,XP(F)::S(B)
- S(d);SBLOCK,XP(H)::R1(D)
- S(g);XQ(K)::R1(D)
- P(f);::QAB(K)
- B(e);::QAB(K)
- S(d);::QAR2(K)
- Refutation
- S(g);
- Try
- Actual
- S(G);
- Threat
- B(L)+R(J),DCHECK
- Vars
- S(g);::R1(D)
- S(g);::S(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).