MESON Chess Problem Database
Problem Display
PID: 232675 (K2R4/8/Qp3N2/2kPN3/7r/PrB4b/1n3nP1/3R1B2 w - - 0 1)
Dittrich, Stefan
Freie Presse, 1977
#2
11 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxc3
- 2.Qb5#
- 1...Rb5
- 2.Qxb5#
- 1...Rd4
- 2.Bxd4#
- 1...Rg4
- 2.Qc8#
- 1...Rh5
- 2.Bd4#
- 1...Rh6
- 2.Bd4#
- 1...Rh7
- 2.Bd4#
- 1...Rh8
- 2.Bd4#
- 1...Bxg2
- 2.Qc8#
- 1...Bg4
- 2.Bd4#
- 1...Bc8
- 2.Qxc8#
- 1...Se4
- 2.Bd4#
- 1...Sg4
- 2.Se4#
- 2.Bd4#
- 2.Qc8#
- 1...b5
- 2.Qc6#
- 2.Qd6#
- 2.Qa7#
- 1...Rxc3
- Tries
- 1.Seg4?
- threat
- 2.Bd4#
- 2.Qc8#
- 1...Rxa3
- 2.Qxa3#
- 1...Rxc3
- 2.Qb5#
- 2.Qc8#
- 1...Rxg4
- 2.Qc8#
- 1...Bxg4
- 2.Bd4#
- 1...Sbxd1
- 2.Qc4#
- 2.Qc8#
- 1...Sfxd1
- 2.Se4#
- 2.Qc8#
- 1...Rb4
- 2.Bxb4#
- 2.Qc8#
- 2.axb4#
- 1...Rh7
- 2.Bd4#
- 1...Sc4
- 2.Bd4#
- 2.Qxc4#
- 1...Sfd3
- 2.Se4#
- 1...b5
- 2.Sd7#
- 2.Bd4#
- 2.Rc8#
- 2.Qc6#
- 2.Qd6#
- 2.Qa7#
- 1...Sbd3!
- threat
- 1.Se4+?
- 1...Sxe4
- 2.Bd4#
- 1...Rxe4!
- 1...Sxe4
- 1.Sfg4?
- threat
- 2.Bd4#
- 2.Qc8#
- 1...Rxa3
- 2.Qxa3#
- 1...Rxc3
- 2.Qb5#
- 2.Qc8#
- 1...Rxg4
- 2.Qc8#
- 1...Bxg4
- 2.Bd4#
- 1...Sbxd1
- 2.Qc4#
- 2.Qc8#
- 1...Sfxd1
- 2.Qc8#
- 1...Rb4
- 2.Bxb4#
- 2.Qc8#
- 2.axb4#
- 1...Rh6
- 2.Bd4#
- 1...Rh7
- 2.Bd4#
- 1...Sbd3
- 2.Qc4#
- 1...Sc4
- 2.Bd4#
- 2.Qxc4#
- 1...b5
- 2.Sd7#
- 2.Bd4#
- 2.Rc8#
- 2.Qc6#
- 2.Qd6#
- 2.Qa7#
- 1...Sfd3!
- threat
- 1.Qa5+?
- 1...Rb5
- 2.Qxb5#
- 1...b5
- 2.Qc7#
- 2.Qa7#
- 1...bxa5!
- 1...Rb5
- 1.Seg4?
- Keys
- 1.g4!
- threat
- 2.Bd4#
- 2.Qc8#
- 1...Rxa3
- 2.Qxa3#
- 1...Rxc3
- 2.Qb5#
- 2.Qc8#
- 1...Rxg4
- 2.Qc8#
- 1...Bxf1
- 2.Bd4#
- 1...Bxg4
- 2.Bd4#
- 1...Sbxd1
- 2.Qc4#
- 2.Qc8#
- 1...Sfxd1
- 2.Se4#
- 2.Qc8#
- 1...Rb4
- 2.Bxb4#
- 2.Qc8#
- 2.axb4#
- 1...Rh7
- 2.Bd4#
- 1...Sbd3
- 2.Qc4#
- 1...Sc4
- 2.Bd4#
- 2.Qxc4#
- 1...Sfd3
- 2.Se4#
- 1...b5
- 2.Sed7#
- 2.Sfd7#
- 2.Bd4#
- 2.Rc8#
- 2.Qc6#
- 2.Qd6#
- 2.Qa7#
- threat
- 1.g4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 9
- Sets
- R(c);N_GUARD,XB(E)::QAR1(H)
- R(c);N_GUARD::QAR1(H),XR(c)
- R(e);N_GUARD::B(E),XR(e)
- R(e);S_CUTB(d)::QAR(H)
- R(e);N_GUARD::B(E)
- R(e);N_GUARD,P_PINR(K)::B(E)
- B(d);N_GUARD,P_PINP(F),XP(C)::QAR(H)
- B(d);S_CUTR(e)::B(E)
- B(d);N_GUARD::QAR(H),XB(d)
- S(b);S_CUTR(e)::B(E)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(c);OGATE,P_PINQ(H),XP(D)::QAB(H),XR(c)
- R(e);XS(G)::QAR(H)
- B(d);XS(G)::B(E)
- R(e);::B(E)
- S(b);N_GUARD::S(I)
- Refutation
- S(a);
- Try
- S(I);CHECK
- Vars
- S(b);XS(I)::B(E)
- Refutation
- R(e);XS(I)
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- R(c);OGATE,P_PINQ(H),XP(D)::QAB(H),XR(c)
- R(e);XS(I)::QAR(H)
- B(d);XS(I)::B(E)
- S(b);XR(A)::QAR(H)
- R(e);::B(E)
- S(a);N_GUARD::QAR1(H)
- Refutation
- S(b);
- Try
- Q(H);CHECK
- Vars
- R(c);N_GUARD,P_SPINR(c)::QAR1(H),XR(c)
- Refutation
- P(g);XQ(H)
- Try
- Actual
- P(C);
- Threat
- DUALS(2)
- Vars
- R(c);OGATE,P_PINQ(H),XP(D)::QAB(H),XR(c)
- R(e);XP(C)::QAR(H)
- B(d);XB(B)::B(E)
- B(d);XP(C)::B(E)
- R(e);::B(E)
- S(a);N_GUARD::QAR1(H)
- S(b);N_GUARD::S(I)
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).