MESON Chess Problem Database
Problem Display
PID: 17829 (4R3/2p3Q1/8/4nkNp/1R5B/3P2P1/8/q1bB1K2 w - - 0 1)
Brehmer, Siegfried
Deutsche Schachzeitung, 1951
#2
9 + 6
| 3691 | 100 und ein Schachproblem von Siegfried Brehmer | 1996 |
| 45 | Schach | 2000 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Rxe5#
- 1...Qa2
- 2.Rxe5#
- 1...Qa3
- 2.Rxe5#
- 1...Qa4
- 2.Rxe5#
- 1...Qa6
- 2.Rxe5#
- 1...Qa7
- 2.Rxe5#
- 1...Qa8
- 2.Rxe5#
- 1...Bb2
- 2.Rf4#
- 1...Ba3
- 2.Rf4#
- 1...Bf4
- 2.Rxf4#
- 1...Bxg5
- 2.Qxg5#
- 1...Qb1
- Tries
- 1.Sf3?
- threat
- 2.Qf6#
- 1...Sxd3
- 2.Qh7#
- 1...Sxf3
- 2.Qh7#
- 1...Qd4
- 2.Sxd4#
- 1...Qa6
- 2.Sd4#
- 2.Rxe5#
- 1...Bf4
- 2.Rxf4#
- 1...Bg5
- 2.Qxg5#
- 1...Sg4
- 2.Qh7#
- 1...Sc6
- 2.Qh7#
- 1...Sg6
- 2.Qd7#
- 1...Sd7
- 2.Qh7#
- 1...Sf7
- 2.Qh7#
- 1...Sc4!
- threat
- 1.Se4?
- threat
- 2.Qf6#
- 1...Sxd3
- 2.Qh7#
- 1...Qa6
- 2.Rxe5#
- 1...Bg5
- 2.Qxg5#
- 1...Sc4
- 2.Qh7#
- 1...Sg4
- 2.Qh7#
- 1...Sc6
- 2.Qh7#
- 1...Sg6
- 2.Qd7#
- 1...Sd7
- 2.Qh7#
- 1...Sf7
- 2.Qh7#
- 1...Sf3!
- threat
- 1.Sf7?
- threat
- 2.Qf6#
- 1...Sxd3
- 2.Qh7#
- 1...Sxf7
- 2.Qh7#
- 1...Sf3
- 2.Qh7#
- 1...Qa6
- 2.Rxe5#
- 1...Bg5
- 2.Qxg5#
- 1...Sc4
- 2.Qh7#
- 1...Sg4
- 2.Qh7#
- 1...Sc6
- 2.Qh7#
- 1...Sd7
- 2.Qh7#
- 1...Sg6!
- threat
- 1.Rb5?
- threat
- 2.Rf8#
- 2.Qf7#
- 1...Bxg5
- 2.Qxg5#
- 1...Qa2
- 2.Rbxe5#
- 2.Rexe5#
- 1...Qa3
- 2.Rbxe5#
- 2.Rexe5#
- 2.Qf7#
- 1...Qa6
- 2.Rbxe5#
- 2.Rexe5#
- 1...Qa8
- 2.Rbxe5#
- 2.Rexe5#
- 2.Qf7#
- 1...Ba3
- 2.Qf7#
- 1...c5!
- threat
- 1.Re6?
- threat
- 2.Rf6#
- 2.Qf6#
- 1...Sxd3
- 2.Qg6#
- 2.Qh7#
- 1...Sf3
- 2.Qg6#
- 2.Qh7#
- 1...Qa6
- 2.Rxe5#
- 2.Qxe5#
- 2.Qf6#
- 1...Sc4
- 2.Qg6#
- 2.Qh7#
- 1...Sg4
- 2.Qg6#
- 2.Qh7#
- 1...Sc6
- 2.Qg6#
- 2.Qh7#
- 1...Sg6
- 2.Qxg6#
- 1...Sd7
- 2.Qg6#
- 2.Qh7#
- 1...Sf7
- 2.Qg6#
- 2.Qh7#
- 1...Bxg5!
- threat
- 1.Qxe5+?
- 1...Kg6
- 2.Re6#
- 1...Qxe5!
- 1...Kg6
- 1.Qf8+?
- 1...Kg6
- 2.Re6#
- 1...Sf7!
- 1...Kg6
- 1.Qh7+?
- 1...Kf6
- 2.Se4#
- 2.Re6#
- 1...Sg6!
- 1...Kf6
- 1.Sf3?
- Keys
- 1.Sh3!
- threat
- 2.Qf6#
- 1...Sxd3
- 2.Qh7#
- 1...Qa6
- 2.Rxe5#
- 1...Bg5
- 2.Qxg5#
- 1...Sf3
- 2.Qh7#
- 1...Sc4
- 2.Qh7#
- 1...Sg4
- 2.Qh7#
- 1...Sc6
- 2.Qh7#
- 1...Sg6
- 2.Qd7#
- 1...Sd7
- 2.Qh7#
- 1...Sf7
- 2.Qh7#
- threat
- 1.Sh3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 9
- Sets
- Q(a);N_GUARD::R1(I),XS(c)
- Q(a);N_GUARD,P_PINP(C)::R1(I),XS(c)
- B(b);N_GUARD,P_PINB(A)::R1(E)
- B(b);N_GUARD,P_PINB(A)::R1(E),XB(b)
- B(b);OGATE,P_PINB(A),XS(G)::QAR1(H),XB(b)
- Tries
- Try
- S(G);
- Threat
- QAR1(H)
- Vars
- S(c);N_GUARD,XP(C)::QAB(H)
- S(c);N_GUARD,XS(G)::QAB(H)
- Q(a);N_GUARD::S(G),XQ(a)
- B(b);N_GUARD,P_PINB(A)::R1(E),XB(b)
- B(b);N_GUARD,P_PINB(A)::QAR1(H),XB(b)
- S(c);N_GUARD::QAB(H)
- S(c);N_GUARD,SBLOCK::QAB(H)
- Refutation
- S(c);
- Try
- S(G);
- Threat
- QAR1(H)
- Vars
- S(c);N_GUARD,XP(C)::QAB(H)
- Q(a);N_GUARD,P_PINP(C)::R1(I),XS(c)
- B(b);N_GUARD,P_PINB(A)::QAR1(H),XB(b)
- S(c);N_GUARD::QAB(H)
- S(c);N_GUARD,SBLOCK::QAB(H)
- Refutation
- S(c);
- Try
- S(G);
- Threat
- QAR1(H)
- Vars
- S(c);N_GUARD,XP(C)::QAB(H)
- S(c);N_GUARD,XS(G)::QAB(H)
- S(c);N_GUARD::QAB(H)
- Q(a);N_GUARD,P_PINP(C)::R1(I),XS(c)
- B(b);N_GUARD,P_PINB(A)::QAR1(H),XB(b)
- Refutation
- S(c);
- Try
- R(E);P_PINS(c)
- Threat
- DUALS(2)
- Vars
- B(b);OGATE,P_PINB(A),XS(G)::QAR1(H),XB(b)
- B(b);P_PINB(A)::QAR2(H)
- Refutation
- P(f);N_SPINS(c)
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- S(c);N_GUARD::QAB1(H),XS(c)
- Refutation
- B(b);P_PINB(A),XS(G)
- Try
- Q(H);CHECK,XS(c)
- Vars
- K(d);S_FLIGHT::R(I)
- Refutation
- Q(a);XQ(H)
- Try
- Q(H);CHECK
- Vars
- K(d);S_FLIGHT::R(I)
- Refutation
- S(c);P_SPINS(c)
- Try
- Q(H);CHECK
- Refutation
- S(c);P_SPINS(c)
- Try
- Actual
- S(G);
- Threat
- QAR1(H)
- Vars
- S(c);N_GUARD,XP(C)::QAB(H)
- Q(a);N_GUARD,P_PINP(C)::R1(I),XS(c)
- B(b);N_GUARD,P_PINB(A)::QAR1(H),XB(b)
- S(c);N_GUARD::QAB(H)
- S(c);N_GUARD,SBLOCK::QAB(H)
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).