MESON Chess Problem Database
Problem Display
PID: 54023 (3R3B/6R1/8/np1Nqp2/1P1k1P2/P2B2Q1/3rpN2/5bK1 w - - 0 1)
Laib, Kurt Friedrich
1st HM., Schach-Echo, 1933
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Qxf4
- 2.Rg4#
- 2.Qxf4#
- 1...Qf6
- 2.Qe3#
- 1...Qc7
- 2.Rxc7#
- 2.Qe3#
- 1...Qxg7
- 2.Bxg7#
- 2.Qxg7#
- 1...Qb8
- 2.Rc7#
- 2.Qe3#
- 1...Qe3
- 2.Qxe3#
- 1...Qxd5
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rgd7#
- 2.Re7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Qe7
- 2.Rxe7#
- 1...Rxd3
- 2.Qxd3#
- 1...Qxf4
- Tries
- 1.Sc3+?
- 1...Qd6
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rgd7#
- 2.Re7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Qd5
- 2.Sxb5#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rgd7#
- 2.Re7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Kxc3!
- 1...Qd6
- 1.Se3+?
- 1...Qd6
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rgd7#
- 2.Re7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Qd5
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rgd7#
- 2.Re7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Kc3!
- 1...Qd6
- 1.Sb6+?
- 1...Qd6
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rgd7#
- 2.Re7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Qd5
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rgd7#
- 2.Re7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Kc3!
- 1...Qd6
- 1.Sc7+?
- 1...Qd6
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Rgd7#
- 2.Re7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Qd5
- 2.Sxb5#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Rgd7#
- 2.Re7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Kc3!
- 1...Qd6
- 1.Se7+?
- 1...Qd6
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Qd5
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Kc3!
- 1...Qd6
- 1.Bxe2?
- threat
- 2.Qc3#
- 1...Qxg7
- 2.Sc3#
- 2.Sb6#
- 2.Sc7#
- 2.Se7#
- 2.Bxg7#
- 2.Qxg7#
- 1...Qxd5
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rgd7#
- 2.Re7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Rd3
- 2.Qxd3#
- 1...Qe3
- 2.Qxe3#
- 1...Qc7
- 2.Sxc7#
- 2.Rxc7#
- 2.Qe3#
- 1...Rc2
- 2.Qd3#
- 1...Qd6!
- threat
- 1.Bc4?
- threat
- 2.Qc3#
- 1...Kxc4
- 2.Sb6#
- 1...Qxg7
- 2.Sb6#
- 1...Qxd5
- 2.Rc7#
- 1...Rc2
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 1...Qe3!
- threat
- 1.Bxb5?
- threat
- 2.Qc3#
- 1...Qxg7
- 2.Sc3#
- 2.Sb6#
- 2.Sc7#
- 2.Se7#
- 2.Bxg7#
- 2.Qxg7#
- 1...Qxd5
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rgd7#
- 2.Re7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Qe3
- 2.Qxe3#
- 1...Qc7
- 2.Sxc7#
- 2.Rxc7#
- 2.Qe3#
- 1...Rc2
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 1...Qd6!
- threat
- 1.Rc7?
- threat
- 2.Sc3#
- 2.Se3#
- 2.Sb6#
- 2.Se7#
- 2.Bxe5#
- 2.Qe3#
- 1...Qxh8
- 2.Qe3#
- 1...Rxd3
- 2.Sc3#
- 2.Se3#
- 2.Sb6#
- 2.Se7#
- 2.Bxe5#
- 2.Qxd3#
- 1...e1Q
- 2.Sc3#
- 2.Se3#
- 2.Sb6#
- 2.Se7#
- 1...e1R
- 2.Sc3#
- 2.Se3#
- 2.Sb6#
- 2.Se7#
- 1...Qf6
- 2.Sc3#
- 2.Se3#
- 2.Sb6#
- 2.Sxf6#
- 2.Se7#
- 2.Bxf6#
- 2.Qe3#
- 1...Qg7
- 2.Sc3#
- 2.Se3#
- 2.Sb6#
- 2.Se7#
- 2.Bxg7#
- 2.Qxg7#
- 1...Bg2
- 2.Bxe5#
- 2.Qe3#
- 1...Sc6
- 2.Qe3#
- 1...Sb7
- 2.Bxe5#
- 2.Qe3#
- 1...Sc4!
- threat
- 1.Sc3+?
- Keys
- 1.Be4!
- threat
- 2.Qc3#
- 1...Kc4
- 2.Sb6#
- 1...Qxg7
- 2.Sb6#
- 1...Qxd5
- 2.Rc7#
- 1...Qc7
- 2.Rxc7#
- 1...Rc2
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- threat
- 1.Be4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 3
- Sets
- Q(g);N_GUARD::QAB1(E)
- Q(g);N_GUARD,P_PINS(B)::QAB1(E),XQ(g)
- Q(g);OGATEB::B(K)+R(I),XQ(g)
- R(b);OGATE,XB(D)::QAR1(E),XR(b)
- Tries
- Try
- S(H);CHECK
- Refutation
- K(d);S_FLIGHT,XS(H)
- Try
- S(H);CHECK
- Refutation
- K(d);S_FLIGHT
- Try
- S(H);CHECK
- Refutation
- K(d);S_FLIGHT
- Try
- S(H);CHECK
- Refutation
- K(d);S_FLIGHT
- Try
- S(H);CHECK
- Refutation
- K(d);S_FLIGHT
- Try
- B(D);XP(c)
- Threat
- QAB1(E)
- Vars
- R(b);N_GUARD::QAR1(E),XR(b)
- Q(g);N_GUARD,P_PINS(B)::QAB1(E),XQ(g)
- R(b);N_GUARD::QAR1(E)
- Refutation
- Q(g);
- Try
- B(D);
- Threat
- QAB1(E)
- Vars
- K(d);P-FLIGHT,XB(D)::S(H)
- Q(g);N_GUARD,P_PINQ(E),P_SPINQ(g),XR(I)::R(J)+S(H)
- Q(g);OGATEB,P_SPINQ(g),XS(H)::B(K)+R(I)
- R(b);N_GUARD::QAR1(E)
- R(b);N_GUARD::QAR1(E),XR(b)
- Refutation
- Q(g);P_PINS(B)
- Try
- B(D);XP(f)
- Threat
- QAB1(E)
- Vars
- Q(g);N_GUARD,P_PINS(B)::QAB1(E),XQ(g)
- R(b);N_GUARD::QAR1(E)
- R(b);N_GUARD::QAR1(E),XR(b)
- Refutation
- Q(g);
- Try
- R(I);P_PINQ(g)
- Threat
- DUALS(6)
- Vars
- Q(g);N_SPINQ(g),XB(K)::QAB1(E)
- S(e);::QAB1(E)
- Refutation
- S(e);
- Try
- Actual
- B(D);
- Threat
- QAB1(E)
- Vars
- K(d);P-FLIGHT::S(H)
- Q(g);N_GUARD,P_PINQ(E),P_SPINQ(g),XR(I)::R(J)+S(H)
- Q(g);OGATEB,P_SPINQ(g),XS(H)::B(K)+R(I)
- Q(g);OGATEB::B(K)+R(I),XQ(g)
- R(b);N_GUARD::QAR1(E)
- R(b);N_GUARD::QAR1(E),XR(b)
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).