MESON Chess Problem Database
Problem Display
PID: 251010 (5b2/B3q3/B7/r2NpR2/4kpp1/p2R1N2/2Q5/Kb6 w - - 0 1)
Bogdanov, Evgeny Mikhailovich
Probleemblad, 1981
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Qb4
- 2.Rxe5#
- 1...Qh4
- 2.Rxe5#
- 1...Qc5
- 2.Rxe5#
- 1...Qd8
- 2.Rxe5#
- 1...Qxa7
- 2.Rxe5#
- 1...Qb7
- 2.Rxe5#
- 1...Qd7
- 2.Rxe5#
- 1...Qf7
- 2.Rxe5#
- 1...Qh7
- 2.Rxe5#
- 1...Rxd5
- 2.Re3#
- 1...gxf3
- 2.Rd4#
- 1...Qb4
- Tries
- 1.Sd4?
- threat
- 2.Sc3#
- 1...Kxd5
- 2.Qc6#
- 1...Rxd5
- 2.Qe2#
- 1...exd4
- 2.Re3#
- 1...Qb4
- 2.Sf6#
- 1...Qc5
- 2.Sf6#
- 1...Qc7
- 2.Sf6#
- 1...Rc5!
- threat
- 1.Sh4?
- threat
- 2.Sc3#
- 2.Rd4#
- 2.Qe2#
- 2.Qc4#
- 1...Qxa7
- 2.Sc3#
- 2.Sf6#
- 1...Rxd5
- 2.Re3#
- 2.Qe2#
- 1...Bxc2
- 2.Sc3#
- 1...Qb4
- 2.Sf6#
- 2.Rd4#
- 2.Qe2#
- 1...Qc5
- 2.Sf6#
- 1...Qc7
- 2.Sf6#
- 2.Rd4#
- 2.Qe2#
- 1...Ra4
- 2.Sc3#
- 2.Rd4#
- 2.Qe2#
- 1...Rc5
- 2.Qe2#
- 1...Ba2
- 2.Sc3#
- 2.Rd1#
- 2.Rd2#
- 2.Rd4#
- 2.Qe2#
- 1...f3
- 2.Sc3#
- 2.Rd4#
- 2.Qc4#
- 1...Qxh4!
- threat
- 1.Sxe7?
- threat
- 2.Sd2#
- 2.Sg5#
- 2.Re3#
- 2.Qe2#
- 2.Qc4#
- 1...Bxc2
- 2.Sd2#
- 2.Sg5#
- 1...gxf3
- 2.Re3#
- 2.Qc4#
- 1...Ra4
- 2.Sd2#
- 2.Sg5#
- 2.Bb7#
- 2.Re3#
- 2.Rxe5#
- 2.Qxa4#
- 2.Qe2#
- 2.Qc6#
- 1...Rc5
- 2.Sd2#
- 2.Sg5#
- 2.Qe2#
- 1...Rd5
- 2.Sd2#
- 2.Sg5#
- 2.Re3#
- 2.Qe2#
- 1...Ba2
- 2.Sd2#
- 2.Sg5#
- 2.Rxa3#
- 2.Rb3#
- 2.Rc3#
- 2.Re3#
- 2.Qe2#
- 1...Bh6
- 2.Sd2#
- 2.Re3#
- 2.Qe2#
- 2.Qc4#
- 1...Bxe7!
- threat
- 1.Rg5?
- threat
- 2.Sd2#
- 2.Sc3#
- 2.Qe2#
- 2.Qc4#
- 1...Qxa7
- 2.Sd2#
- 2.Sc3#
- 2.Sf6#
- 2.Rxe5#
- 1...Rxd5
- 2.Sd2#
- 2.Re3#
- 2.Qe2#
- 1...Bxc2
- 2.Sd2#
- 2.Sc3#
- 1...gxf3
- 2.Sc3#
- 2.Rd4#
- 2.Qc4#
- 1...Qb4
- 2.Sf6#
- 2.Rxe5#
- 2.Qe2#
- 1...Qc5
- 2.Sd2#
- 2.Sf6#
- 2.Rxe5#
- 1...Qc7
- 2.Sd2#
- 2.Sf6#
- 2.Qe2#
- 1...Ra4
- 2.Sd2#
- 2.Sc3#
- 2.Qe2#
- 1...Rc5
- 2.Sd2#
- 2.Qe2#
- 1...Ba2
- 2.Sd2#
- 2.Sc3#
- 2.Qe2#
- 1...Qxg5!
- threat
- 1.Rh5?
- threat
- 2.Sd2#
- 2.Sc3#
- 2.Qe2#
- 2.Qc4#
- 1...Qxa7
- 2.Sd2#
- 2.Sc3#
- 2.Sf6#
- 2.Rxe5#
- 1...Rxd5
- 2.Sd2#
- 2.Re3#
- 2.Qe2#
- 1...Bxc2
- 2.Sd2#
- 2.Sc3#
- 1...gxf3
- 2.Sc3#
- 2.Rd4#
- 2.Qc4#
- 1...Qb4
- 2.Sf6#
- 2.Rxe5#
- 2.Qe2#
- 1...Qc5
- 2.Sd2#
- 2.Sf6#
- 2.Rxe5#
- 1...Qc7
- 2.Sd2#
- 2.Sf6#
- 2.Qe2#
- 1...Ra4
- 2.Sd2#
- 2.Sc3#
- 2.Qe2#
- 1...Rc5
- 2.Sd2#
- 2.Qe2#
- 1...Ba2
- 2.Sd2#
- 2.Sc3#
- 2.Qe2#
- 1...Qg5!
- threat
- 1.Rf6?
- threat
- 2.Sd2#
- 2.Sg5#
- 2.Sc3#
- 2.Qe2#
- 2.Qc4#
- 1...Qxa7
- 2.Sd2#
- 2.Sg5#
- 2.Sc3#
- 1...Rxd5
- 2.Sd2#
- 2.Sg5#
- 2.Re3#
- 2.Qe2#
- 1...Bxc2
- 2.Sd2#
- 2.Sg5#
- 2.Sc3#
- 1...gxf3
- 2.Sc3#
- 2.Rd4#
- 2.Qc4#
- 1...Qb4
- 2.Sg5#
- 2.Qe2#
- 1...Qc5
- 2.Sd2#
- 2.Sg5#
- 1...Qc7
- 2.Sd2#
- 2.Sg5#
- 2.Qe2#
- 1...Qg7
- 2.Sd2#
- 2.Sc3#
- 2.Qe2#
- 2.Qc4#
- 1...Ra4
- 2.Sd2#
- 2.Sg5#
- 2.Sc3#
- 2.Qe2#
- 1...Rc5
- 2.Sd2#
- 2.Sg5#
- 2.Qe2#
- 1...Ba2
- 2.Sd2#
- 2.Sg5#
- 2.Sc3#
- 2.Qe2#
- 1...Bh6
- 2.Sd2#
- 2.Sc3#
- 2.Qe2#
- 2.Qc4#
- 1...Qxf6!
- threat
- 1.Sd4?
- Keys
- 1.Se3!
- threat
- 2.Sd2#
- 1...Kxf3
- 2.Qg2#
- 1...fxe3
- 2.Rd4#
- 1...gxf3
- 2.Qc4#
- 1...Qb4
- 2.Sg5#
- threat
- 1.Se3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- Q(h);N_GUARD::R1(F),XP(g)
- Q(h);N_GUARD,XB(H)::R1(F),XP(g)
- R(f);SBLOCK,XS(E)::QAB(B)+R(C),DCHECK
- P(e);SBLOCK,XS(D)::QAB(B)+R(C),DCHECK
- Tries
- Try
- S(D);
- Threat
- S(E)
- Vars
- K(c);OGATEB,P_SPINP(g),S_FLIGHT,XS(E)::QAB1(B)
- R(f);SBLOCK,XS(E)::QAR2(B)
- P(g);XS(D)::QAB(B)+R(C),DCHECK
- Q(h);N_GUARD::S(E)
- Refutation
- R(f);
- Try
- S(D);
- Threat
- DUALS(4)
- Vars
- B(a);XQ(B)::S(E)
- Q(h);N_GUARD::S(E)
- R(f);::QAR2(B)
- Refutation
- Q(h);XS(D)
- Try
- S(E);XQ(h)
- Threat
- DUALS(5)
- Refutation
- B(i);XS(E)
- Try
- R(F);
- Threat
- DUALS(4)
- Refutation
- Q(h);XR(F)
- Try
- R(F);
- Threat
- DUALS(4)
- Refutation
- Q(h);
- Try
- R(F);
- Threat
- DUALS(5)
- Refutation
- Q(h);XR(F)
- Try
- Actual
- S(E);
- Threat
- S(D)
- Vars
- K(c);OGATEB,P_SPINP(d),S_FLIGHT,XS(D)::QAB1(B)
- P(d);SBLOCK,XS(E)::QAB(B)+R(C),DCHECK
- P(e);SBLOCK,XS(D)::QAR2(B)
- Q(h);N_GUARD::S(D)
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).