MESON Chess Problem Database
Problem Display
PID: 90879 (4R3/1np2N2/r1b5/1N6/1B3kB1/1p5K/6n1/3Q2b1 w - - 0 1)
Kaiser, Gerhard
Die Schwalbe, 1961
#2
7 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bf3
- 2.Qxf3#
- 1...Bxb5
- 2.Qf3#
- 1...Bd7
- 2.Qf3#
- 1...Bxe8
- 2.Qf3#
- 1...Bf3
- Tries
- 1.Sc3?
- threat
- 2.Se2#
- 1...Bxe8
- 2.Qf3#
- 1...Be4
- 2.Rxe4#
- 1...Bf3
- 2.Qxf3#
- 1...Bb5
- 2.Sd5#
- 2.Re4#
- 2.Qf3#
- 1...Ra2!
- threat
- 1.Re4+?
- 1...Kxe4
- 2.Qf3#
- 1...Bxe4!
- 1...Kxe4
- 1.Qe1?
- threat
- 2.Qg3#
- 2.Qe5#
- 1...Bxe8
- 2.Qe5#
- 1...Bf2
- 2.Qe5#
- 1...Bh2
- 2.Qe5#
- 1...Be3
- 2.Qg3#
- 1...Bd4
- 2.Qg3#
- 1...Be4
- 2.Rxe4#
- 2.Qg3#
- 2.Qxe4#
- 1...Se3
- 2.Qg3#
- 1...Sxe1!
- threat
- 1.Qf1+?
- 1...Bf3
- 2.Qxf3#
- 1...Bf2!
- 1...Bf3
- 1.Qxg1?
- threat
- 2.Qh2#
- 1...Bxe8
- 2.Qd4#
- 1...Be4!
- threat
- 1.Qd3?
- threat
- 2.Qf5#
- 2.Qg3#
- 1...Bxe8
- 2.Qf3#
- 1...Bf2
- 2.Qf5#
- 1...Bh2
- 2.Qf5#
- 1...Be3
- 2.Qf5#
- 1...Bf3
- 2.Qf5#
- 2.Qxf3#
- 1...Be4
- 2.Rxe4#
- 2.Qxe4#
- 2.Qg3#
- 1...Bd7
- 2.Re4#
- 2.Qe4#
- 2.Qf3#
- 2.Qg3#
- 1...Sh4
- 2.Qg3#
- 1...Sd6
- 2.Qg3#
- 1...Se3!
- threat
- 1.Qd4+?
- 1...Be4
- 2.Rxe4#
- 2.Qxe4#
- 1...Bxd4!
- 1...Be4
- 1.Qd5?
- threat
- 2.Re4#
- 2.Qe5#
- 2.Qf5#
- 2.Qg5#
- 1...Bxe8
- 2.Qf3#
- 2.Qe5#
- 1...Bd4
- 2.Re4#
- 2.Qf5#
- 2.Qg5#
- 1...Bd7
- 2.Re4#
- 2.Qf3#
- 2.Qe4#
- 2.Qe5#
- 2.Qg5#
- 1...Se3
- 2.Re4#
- 2.Qe5#
- 2.Qg5#
- 1...Sh4
- 2.Re4#
- 2.Qe5#
- 2.Qg5#
- 1...Sc5
- 2.Qe5#
- 2.Qf5#
- 2.Qg5#
- 1...Sd6
- 2.Qe5#
- 2.Qg5#
- 1...Bxd5!
- threat
- 1.Sc3?
- Keys
- 1.Be7!
- threat
- 2.Bg5#
- 1...Ke3
- 2.Qd4#
- 1...Ke4
- 2.Qf3#
- 1...Bxe8
- 2.Qf3#
- threat
- 1.Be7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- B(f);N_GUARD::QAR1(A),XB(f)
- B(f);N_GUARD,XS(E)::QAR1(A)
- B(f);N_GUARD,P_PINB(D)::QAR1(A)
- B(f);N_GUARD,XR(G)::QAR1(A)
- Tries
- Try
- S(E);
- Threat
- S(E)
- Vars
- B(f);N_GUARD,XR(G)::QAR1(A)
- B(f);N_GUARD::R1(G),XB(f)
- B(f);N_GUARD::QAR1(A),XB(f)
- Refutation
- R(e);
- Try
- R(G);CHECK
- Vars
- K(d);P-FLIGHT,XR(G)::QAB1(A)
- Refutation
- B(f);XR(G)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(f);XR(G)::QAB1(A)
- B(a);::QAB1(A)
- S(b);::QAB1(A)
- Refutation
- S(b);XQ(A)
- Try
- Q(A);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::QAR1(A),XB(f)
- Refutation
- B(a);P_SPINB(a)
- Try
- Q(A);XB(a)
- Threat
- QAB(A)
- Vars
- B(f);N_GUARD,XR(G)::QAR2(A)
- Refutation
- B(f);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(f);N_GUARD,XR(G)::QAR1(A)
- B(a);::QAR1(A)
- S(b);::QAB1(A)
- S(g);::QAB1(A)
- Refutation
- S(b);
- Try
- Q(A);CHECK
- Refutation
- B(a);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(4)
- Refutation
- B(f);XQ(A)
- Try
- Actual
- B(C);
- Threat
- B(C)
- Vars
- K(d);S_FLIGHT::QAB1(A)
- K(d);P-FLIGHT::QAB1(A)
- B(f);N_GUARD,XR(G)::QAR1(A)
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).