MESON Chess Problem Database
Problem Display
PID: 232426 (8/2r5/p3BR1B/4N3/Q2bk2K/2P2N1R/1P1pnp2/3q3n w - - 0 1)
Degenkolbe, Mirko
Freie Presse, 1980
#2
10 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qc2
- 2.Qxc2#
- 1...Qa1
- 2.Qc2#
- 1...Qe1
- 2.Qc2#
- 1...Qf1
- 2.Qc2#
- 1...Qg1
- 2.Qc2#
- 1...Rc6
- 2.Qxc6#
- 1...Ra7
- 2.Qc6#
- 1...Rb7
- 2.Qc6#
- 1...Re7
- 2.Qc6#
- 1...Rf7
- 2.Qc6#
- 1...Rg7
- 2.Qc6#
- 1...Rh7
- 2.Qc6#
- 1...Sc1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sxc3
- 2.Qxd4#
- 1...Sg3
- 2.Qxd4#
- 1...Sf4
- 2.Qxd4#
- 1...Qc2
- Tries
- 1.Bf4?
- threat
- 2.Sg5#
- 1...Sxf4
- 2.Qxd4#
- 1...Qg1
- 2.Sxd2#
- 2.Qc2#
- 1...Rg7
- 2.Qc6#
- 1...Rh7+!
- threat
- 1.Rf4+?
- 1...Sxf4
- 2.Qxd4#
- 1...Ke3!
- 1...Sxf4
- 1.Rf5?
- threat
- 2.Sg5#
- 1...Qg1
- 2.Sxd2#
- 2.Qc2#
- 1...Rg7
- 2.Qc6#
- 1...Seg3
- 2.Qxd4#
- 1...Shg3!
- threat
- 1.Qb5?
- threat
- 2.Sg5#
- 2.Bd5#
- 2.Bf5#
- 2.Qd3#
- 2.Qd5#
- 1...Rxc3
- 2.Sg5#
- 2.Bd5#
- 2.Bf5#
- 2.Qd5#
- 1...Bxc3
- 2.Bd5#
- 2.Bf5#
- 2.Qd3#
- 2.Qd5#
- 1...Bxe5
- 2.Sg5#
- 2.Bd5#
- 2.Bf5#
- 2.Qd5#
- 1...Sxc3
- 2.Sg5#
- 2.Bf5#
- 2.Qd3#
- 1...Sf4
- 2.Sg5#
- 1...Rc5
- 2.Qd3#
- 1...Qc2
- 2.Sg5#
- 2.Bd5#
- 2.Bf5#
- 2.Qd5#
- 1...Qb3
- 2.Sxd2#
- 2.Sg5#
- 2.Bf5#
- 2.Qd3#
- 1...Qb1
- 2.Sxd2#
- 2.Sg5#
- 2.Bd5#
- 2.Bf5#
- 2.Qd5#
- 1...Qg1
- 2.Sxd2#
- 2.Bd5#
- 2.Bf5#
- 2.Qd3#
- 2.Qd5#
- 1...Rc4
- 2.Sg5#
- 2.Bd5#
- 2.Bf5#
- 2.Qd5#
- 1...Rd7
- 2.Sg5#
- 2.Bf5#
- 2.Qd3#
- 1...Rg7
- 2.Bd5#
- 2.Bf5#
- 2.Qd3#
- 2.Qc6#
- 2.Qd5#
- 1...Be3
- 2.Bd5#
- 2.Bf5#
- 2.Qd3#
- 2.Qd5#
- 1...Bc5
- 2.Qd3#
- 1...Shg3
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Sc1
- 2.Sg5#
- 2.Bd5#
- 2.Bf5#
- 2.Qd5#
- 1...Seg3
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...axb5!
- threat
- 1.Qd7?
- threat
- 2.Bd5#
- 2.Bf5#
- 2.Qd5#
- 1...Bxe5
- 2.Sg5#
- 2.Bf5#
- 2.Qd5#
- 1...Sxc3
- 2.Bf5#
- 2.Qxd4#
- 1...Sf4
- 2.Qxd4#
- 1...Rc5
- 2.Bf5#
- 2.Qh7#
- 1...Qb3
- 2.Bf5#
- 1...Shg3
- 2.Bd5#
- 2.Qd5#
- 1...Seg3
- 2.Bd5#
- 2.Qxd4#
- 2.Qd5#
- 1...Rxd7!
- threat
- 1.Qc4?
- threat
- 2.Bd5#
- 2.Bf5#
- 2.Qd3#
- 2.Qd5#
- 1...Sxc3
- 2.Bf5#
- 2.Qd3#
- 2.Qxd4#
- 1...Sf4
- 2.Qxd4#
- 1...Rc5
- 2.Bf5#
- 2.Qd3#
- 1...Qc2
- 2.Bd5#
- 2.Bf5#
- 2.Qd5#
- 1...Qb3
- 2.Bd5#
- 2.Bf5#
- 2.Qd3#
- 1...Qb1
- 2.Bd5#
- 2.Bf5#
- 2.Qd5#
- 1...Rd7
- 2.Bf5#
- 2.Qd3#
- 1...Shg3
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Sc1
- 2.Bd5#
- 2.Bf5#
- 2.Qd5#
- 2.Qxd4#
- 1...Seg3
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 2.Qxd4#
- 1...Rxc4!
- threat
- 1.Bf4?
- Keys
- 1.Sd3!
- threat
- 2.Sg5#
- 1...Kxd3
- 2.Bf5#
- 1...Qg1
- 2.Sxd2#
- 1...Rc5
- 2.Sxc5#
- 1...Rg7
- 2.Sc5#
- 1...Shg3
- 2.Sxf2#
- 1...Seg3
- 2.Qxd4#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 14
- Sets
- Q(a);N_GUARD::QAB(E),XQ(a)
- Q(a);N_GUARD::QAB(E)
- R(i);N_GUARD::QAB(E),XR(i)
- R(i);N_GUARD::QAB(E)
- R(i);N_GUARD,P_PINB(J)::QAB(E)
- S(d);N_GUARD::QAR1(E),XB(f)
- S(d);N_GUARD,XP(B)::QAR1(E),XB(f)
- Tries
- Try
- B(J);
- Threat
- S(C)
- Vars
- S(d);N_GUARD,XB(J)::QAR1(E),XB(f)
- R(i);N_GUARD::QAB(E)
- Refutation
- R(i);CHECK
- Try
- R(I);CHECK
- Vars
- S(d);XR(I)::QAR1(E),XB(f)
- Refutation
- K(g);N_SPINB(f),P-FLIGHT
- Try
- R(I);
- Threat
- S(C)
- Vars
- R(i);N_GUARD::QAB(E)
- S(d);N_GUARD::QAR1(E),XB(f)
- Refutation
- S(b);
- Try
- Q(E);N_PINB(f)
- Threat
- DUALS(5)
- Vars
- S(d);::S(C)
- R(i);::QAB1(E)
- B(f);::QAB1(E)
- Refutation
- P(h);XQ(E)
- Try
- Q(E);N_PINB(f)
- Threat
- DUALS(3)
- Vars
- S(d);N_GUARD::QAR1(E),XB(f)
- Q(a);::B(H)
- Refutation
- R(i);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(4)
- Vars
- S(d);N_GUARD::QAR1(E),XB(f)
- Refutation
- R(i);N_SPINB(f),XQ(E)
- Try
- Actual
- S(G);
- Threat
- S(C)
- Vars
- K(g);N_SPINB(f),S_FLIGHT,XS(G)::B(H)
- Q(a);N_GUARD::S(C),XP(c)
- R(i);N_GUARD::S(G),XR(i)
- R(i);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XP(e)
- S(d);N_GUARD::QAR1(E),XB(f)
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).