MESON Chess Problem Database
Problem Display
PID: 18217 (K5B1/6p1/QP5q/pP1pBN1P/Rbk1N3/8/4P3/1R6 w - - 0 1)
Albarda, Johannes
2nd Place, Match: West Germany - Netherlands, 1953-1954
#2
12 + 6
| 3105 | FIDE Album (1945-1955) | 1964 |
| 3174 | The Two-move Chess Problem Tradition and Development | 1966 |
| 23 | Die Schwalbe | 2007 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Sfd6#
- 1...Qd2
- 2.Sfd6#
- 1...Qe3
- 2.Sxe3#
- 2.Sfd6#
- 1...Qf4
- 2.Sfd6#
- 1...Qg5
- 2.Sfd6#
- 1...Qxh5
- 2.Se3#
- 2.Sfd6#
- 1...Qc6+
- 2.bxc6#
- 1...Qd6
- 2.Se3#
- 2.Sfxd6#
- 1...Qe6
- 2.Se3#
- 1...Qf6
- 2.Se3#
- 1...Qg6
- 2.Se3#
- 1...Qh7
- 2.Se3#
- 2.Sfd6#
- 1...Qh8
- 2.Se3#
- 2.Sfd6#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sfd6#
- 1...Qc1
- Tries
- 1.Ka7?
- 1...Qxh5
- 2.Se3#
- 2.Sfd6#
- 1...Qc1
- 2.Sfd6#
- 1...Qd2
- 2.Sfd6#
- 1...Qe3
- 2.Sxe3#
- 2.Sfd6#
- 1...Qf4
- 2.Sfd6#
- 1...Qg5
- 2.Sfd6#
- 1...Qc6
- 2.Se3#
- 2.bxc6#
- 1...Qd6
- 2.Se3#
- 2.Sfxd6#
- 1...Qe6
- 2.Se3#
- 1...Qf6
- 2.Se3#
- 1...Qg6
- 2.Se3#
- 1...Qh7
- 2.Se3#
- 2.Sfd6#
- 1...Qh8
- 2.Se3#
- 2.Sfd6#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sfd6#
- 1...Qxb6+!
- 1...Qxh5
- 1.Kb7?
- 1...Qc6+
- 2.bxc6#
- 1...Qxh5
- 2.Se3#
- 2.Sfd6#
- 1...Qc1
- 2.Sfd6#
- 1...Qd2
- 2.Sfd6#
- 1...Qe3
- 2.Sxe3#
- 2.Sfd6#
- 1...Qf4
- 2.Sfd6#
- 1...Qg5
- 2.Sfd6#
- 1...Qd6
- 2.Se3#
- 2.Sfxd6#
- 1...Qe6
- 2.Se3#
- 1...Qf6
- 2.Se3#
- 1...Qg6
- 2.Se3#
- 1...Qh7
- 2.Se3#
- 2.Sfd6#
- 1...Qh8
- 2.Se3#
- 2.Sfd6#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sfd6#
- 1...Qxb6+!
- 1...Qc6+
- 1.Kb8?
- 1...Qd6+
- 2.Sfxd6#
- 1...Qxh5
- 2.Se3#
- 2.Sfd6#
- 1...Qc1
- 2.Sfd6#
- 1...Qd2
- 2.Sfd6#
- 1...Qe3
- 2.Sxe3#
- 2.Sfd6#
- 1...Qf4
- 2.Sfd6#
- 1...Qg5
- 2.Sfd6#
- 1...Qc6
- 2.Se3#
- 2.bxc6#
- 1...Qe6
- 2.Se3#
- 1...Qf6
- 2.Se3#
- 1...Qg6
- 2.Se3#
- 1...Qh7
- 2.Se3#
- 2.Sfd6#
- 1...Qh8
- 2.Se3#
- 2.Sfd6#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sfd6#
- 1...Qxb6+!
- 1...Qd6+
- 1.Sd2+?
- 1...Kc5
- 2.Bd4#
- 1...Qxd2!
- 1...Kc5
- 1.Sed6+?
- 1...Kc5
- 2.Bd4#
- 1...Qxd6!
- 1...Kc5
- 1.Bd4?
- 1...Qc6+
- 2.bxc6#
- 1...Qxh5
- 2.Sd2#
- 2.Sed6#
- 1...Qxb6
- 2.Sd2#
- 1...Qc1
- 2.Sed6#
- 1...Qd2
- 2.Sxd2#
- 2.Sed6#
- 1...Qe3
- 2.Sed6#
- 1...Qg5
- 2.Sed6#
- 1...Qd6
- 2.Sd2#
- 2.Sexd6#
- 1...Qe6
- 2.Sd2#
- 1...Qf6
- 2.Sd2#
- 1...Qg6
- 2.Sd2#
- 1...Qh7
- 2.Sd2#
- 2.Sed6#
- 1...Qh8
- 2.Sd2#
- 2.Sed6#
- 1...g5
- 2.Sd2#
- 1...g6
- 2.Sed6#
- 1...Qf4!
- 1...Qc6+
- 1.Be6?
- threat
- 2.Sfd6#
- 1...Qxe6
- 2.Se3#
- 1...Qh8+!
- threat
- 1.Rb2?
- 1...Qc6+
- 2.bxc6#
- 1...Qxh5
- 2.Se3#
- 2.Sfd6#
- 1...Qf4
- 2.Sfd6#
- 1...Qc1
- 2.Sfd6#
- 1...Qd2
- 2.Sfd6#
- 1...Qe3
- 2.Sxe3#
- 2.Sfd6#
- 1...Qg5
- 2.Sfd6#
- 1...Qd6
- 2.Se3#
- 2.Sfxd6#
- 1...Qe6
- 2.Se3#
- 1...Qf6
- 2.Se3#
- 1...Qg6
- 2.Se3#
- 1...Qh7
- 2.Se3#
- 2.Sfd6#
- 1...Qh8
- 2.Se3#
- 2.Sfd6#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sfd6#
- 1...Qxb6!
- 1...Qc6+
- 1.Qc8+?
- 1...Qc6+
- 2.Qxc6#
- 1...Kxb5!
- 1...Qc6+
- 1.Qxa5?
- threat
- 2.Rbxb4#
- 2.Raxb4#
- 2.Qxb4#
- 1...Qd2
- 2.Sfd6#
- 1...Qd6
- 2.Se3#
- 2.Sfxd6#
- 1...Qc6+!
- threat
- 1.Ka7?
- Keys
- 1.Sd4!
- 1...Qc6+
- 2.bxc6#
- 1...Qxh5
- 2.Rc1#
- 2.Qc8#
- 1...Qxb6
- 2.Rc1#
- 1...Qc1
- 2.Rxc1#
- 2.Qc8#
- 1...Qd2
- 2.Qc8#
- 1...Qe3
- 2.Qc8#
- 1...Qf4
- 2.Qc8#
- 1...Qg5
- 2.Qc8#
- 1...Qd6
- 2.Rc1#
- 1...Qe6
- 2.Rc1#
- 1...Qf6
- 2.Rc1#
- 1...Qg6
- 2.Rc1#
- 1...Qh7
- 2.Rc1#
- 2.Qc8#
- 1...Qh8
- 2.Rc1#
- 2.Qc8#
- 1...g5
- 2.Rc1#
- 1...g6
- 2.Qc8#
- 1...Qc6+
- 1.Sd4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 8
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- Q(e);N_GUARD::S(G)
- Q(e);CHECK,OGATE::QAB(I)+P(E),XQ(e)
- Q(e);N_GUARD,N_SPINP(d)::S(G)
- P(f);S_CUTQ(e)::S(G)
- Tries
- Try
- K(K);P-FLIGHT
- Vars
- Q(e);N_GUARD::S(G)
- Q(e);N_GUARD,N_SPINP(d)::S(G)
- P(f);S_CUTQ(e)::S(G)
- Refutation
- Q(e);CHECK,XP(J)
- Try
- K(K);S_FLIGHT
- Vars
- Q(e);CHECK,OGATE::QAB(I)+P(E),XQ(e)
- Q(e);N_GUARD::S(G)
- Q(e);N_GUARD,N_SPINP(d)::S(G)
- P(f);S_CUTQ(e)::S(G)
- Refutation
- Q(e);CHECK,XP(J)
- Try
- K(K);P-FLIGHT
- Vars
- Q(e);CHECK,N_GUARD::S(G),XQ(e)
- Q(e);N_GUARD::S(G)
- Q(e);N_GUARD,P_PINB(F)::S(G)
- Q(e);N_GUARD,N_SPINP(d)::S(G)
- P(f);S_CUTQ(e)::S(G)
- Refutation
- Q(e);CHECK,XP(J)
- Try
- S(D);CHECK
- Vars
- K(b);N_SPINB(a),N_SPINP(d),P-FLIGHT::B(F)
- Refutation
- Q(e);XS(D)
- Try
- S(D);CHECK
- Vars
- K(b);N_SPINB(a),N_SPINP(d),P-FLIGHT::B(F)
- Refutation
- Q(e);XS(D)
- Try
- B(F);
- Vars
- Q(e);CHECK,OGATE::QAB(I)+P(E),XQ(e)
- Q(e);N_GUARD,XP(J)::S(D)
- Q(e);N_GUARD::S(D)
- Q(e);N_GUARD,N_SPINP(d)::S(D)
- P(f);S_CUTQ(e)::S(D)
- Refutation
- Q(e);
- Try
- B(L);
- Threat
- S(G)
- Vars
- Q(e);N_GUARD,N_SPINP(d),XB(L)::S(G)
- Refutation
- Q(e);CHECK
- Try
- R(A);
- Vars
- Q(e);CHECK,OGATE::QAB(I)+P(E),XQ(e)
- Q(e);N_GUARD::S(G)
- Q(e);N_GUARD,N_SPINP(d)::S(G)
- P(f);S_CUTQ(e)::S(G)
- Refutation
- Q(e);XP(J)
- Try
- Q(I);CHECK
- Vars
- Q(e);CHECK,N_GUARD,P_SPINQ(e)::QAR2(I),XQ(e)
- Refutation
- K(b);N_SPINP(d),S_FLIGHT,XP(E)
- Try
- Q(I);XP(c)
- Threat
- DUALS(3)
- Vars
- Q(e);N_GUARD::S(G)
- Refutation
- Q(e);CHECK
- Try
- Actual
- S(G);
- Vars
- Q(e);CHECK,OGATE::QAB(I)+P(E),XQ(e)
- Q(e);N_GUARD,XP(J)::R(A)
- Q(e);N_GUARD::QAR(I)
- Q(e);N_GUARD::R(A)
- Q(e);N_GUARD,N_SPINP(d)::R(A)
- P(f);S_CUTQ(e)::R(A)
- P(f);S_CUTQ(e)::QAR(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).