MESON Chess Problem Database
Problem Display
PID: 177409 (6N1/1B2pQ1b/2R5/3R1p2/N3k3/n3p1P1/3b3p/B6K w - - 0 1)
Bylevski, Aleksandr
Boletim da UBP, 1989
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Bxg8
- 2.Qxf5#
- 1...Bxg8
- Tries
- 1.Rxd2?
- threat
- 2.Rc1#
- 2.Rcc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 2.Rc8#
- 2.Qd5#
- 1...Kf3
- 2.Rg6#
- 1...Bxg8
- 2.Rc1#
- 2.Rcc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 2.Rc8#
- 1...e2
- 2.Re6#
- 1...Bg6
- 2.Rc1#
- 2.Rcc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rxg6#
- 2.Rc7#
- 2.Rc8#
- 2.Qd5#
- 1...Sc2
- 2.Rcxc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 2.Rc8#
- 2.Qd5#
- 1...Sc4
- 2.Rxc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 2.Rc8#
- 2.Qd5#
- 1...e6
- 2.Rc1#
- 2.Rcc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Rxe6#
- 2.Rc7#
- 2.Rc8#
- 1...exd2!
- threat
- 1.Rd4+?
- 1...Ke5
- 2.Rc5#
- 2.Re6#
- 2.Qd5#
- 2.Qe6#
- 2.Qxe7#
- 2.Qg7#
- 1...Kf3!
- 1...Ke5
- 1.Rd7?
- threat
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rcc7#
- 2.Rc8#
- 2.Qd5#
- 1...Bxg8
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rcc7#
- 2.Rc8#
- 1...Bc3
- 2.Rc5#
- 2.Re6#
- 2.Qd5#
- 1...e2
- 2.Re6#
- 1...Bc1
- 2.Rxc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rcc7#
- 2.Rc8#
- 2.Qd5#
- 1...Bg6
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rxg6#
- 2.Rcc7#
- 2.Rc8#
- 2.Qd5#
- 1...Sc2
- 2.Rxc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rcc7#
- 2.Rc8#
- 2.Qd5#
- 1...Sc4
- 2.Rxc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rcc7#
- 2.Rc8#
- 2.Qd5#
- 1...e6
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Rxe6#
- 2.Rcc7#
- 2.Rc8#
- 1...Kf3!
- threat
- 1.Rd8?
- threat
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 2.Rcc8#
- 2.Qd5#
- 1...Bxg8
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 2.Rcc8#
- 1...Bc3
- 2.Rc5#
- 2.Re6#
- 2.Qd5#
- 1...e2
- 2.Re6#
- 1...Bc1
- 2.Rxc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 2.Rcc8#
- 2.Qd5#
- 1...Bg6
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rxg6#
- 2.Rc7#
- 2.Rcc8#
- 2.Qd5#
- 1...Sc2
- 2.Rxc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 2.Rcc8#
- 2.Qd5#
- 1...Sc4
- 2.Rxc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 2.Rcc8#
- 2.Qd5#
- 1...e6
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rcd6#
- 2.Rxe6#
- 2.Rc7#
- 2.Rcc8#
- 1...Kf3!
- threat
- 1.Rc4+?
- 1...Sxc4
- 2.Rxd2#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Kf3!
- 1...Sxc4
- 1.Rcd6?
- threat
- 2.Rxd2#
- 2.Rd3#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Re5#
- 2.Rxf5#
- 1...exd6
- 2.Rxd6#
- 1...e2
- 2.Rd3#
- 2.Re5#
- 1...Bc1
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Re5#
- 2.Rxf5#
- 1...Be1
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Re5#
- 2.Rxf5#
- 1...Bc3
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rxf5#
- 1...Bb4
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Re5#
- 2.Rxf5#
- 1...Ba5
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rxa5#
- 2.Rb5#
- 2.Rc5#
- 2.Re5#
- 2.Rxf5#
- 1...Sb5
- 2.Rxd2#
- 2.Rd3#
- 2.Rxb5#
- 2.Rc5#
- 2.Re5#
- 2.Rxf5#
- 1...f4
- 2.Rxd2#
- 2.Rd3#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Qxf4#
- 1...e5
- 2.Rxd2#
- 2.Rd3#
- 2.Rd4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rxe5#
- 1...Kf3!
- threat
- 1.Rg6?
- threat
- 2.Rxd2#
- 2.Rdd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qxf5#
- 1...Kf3
- 2.Rxd2#
- 1...Bxg6
- 2.Rxd2#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Bc1
- 2.Rd1#
- 2.Rd2#
- 2.Rdd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qxf5#
- 1...Be1
- 2.Rd1#
- 2.Rd2#
- 2.Rdd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qxf5#
- 1...Bc3
- 2.Qxf5#
- 1...Bb4
- 2.Rd1#
- 2.Rd2#
- 2.Rdd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qxf5#
- 1...Ba5
- 2.Rd1#
- 2.Rd2#
- 2.Rdd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qxf5#
- 1...f4
- 2.Rxd2#
- 2.Rdd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qxf4#
- 1...e5
- 2.Rxd2#
- 2.Rd4#
- 2.Rdd6#
- 2.Rd7#
- 2.Rd8#
- 1...e6
- 2.Rxd2#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...e2!
- threat
- 1.Qxe7+?
- 1...Kxd5
- 2.Sb6#
- 2.Sf6#
- 2.Rc1#
- 2.Rc2#
- 2.Rc5#
- 2.Rc7#
- 2.Rc8#
- 2.Qe5#
- 2.Qe6#
- 1...Kf3!
- 1...Kxd5
- 1.Rxd2?
- Keys
- 1.Qh5!
- threat
- 2.Re6#
- 1...Kxd5
- 2.Qf3#
- 1...Bxg8
- 2.Qxf5#
- 1...Bc3
- 2.Sxc3#
- 1...Sc4
- 2.Rxc4#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 2.Rxe6#
- threat
- 1.Qh5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- B(h);N_GUARD,XS(I)::QAB1(H),XP(f)
- Tries
- Try
- R(E);XB(a)
- Threat
- DUALS(14)
- Vars
- K(e);P_SPINP(f),S_FLIGHT::B(G)+R(F)
- P(d);::B(G)+R(F),DCHECK
- Refutation
- P(d);XR(E)
- Try
- R(E);CHECK
- Refutation
- K(e);P_SPINP(f),S_FLIGHT
- Try
- R(E);
- Threat
- DUALS(14)
- Vars
- P(d);::B(G)+R(F),DCHECK
- Refutation
- K(e);P_SPINP(f),S_FLIGHT
- Try
- R(E);
- Threat
- DUALS(14)
- Vars
- P(d);::B(G)+R(F),DCHECK
- Refutation
- K(e);P_SPINP(f),S_FLIGHT
- Try
- R(F);CHECK
- Refutation
- K(e);P_SPINP(f),S_FLIGHT
- Try
- R(F);
- Threat
- DUALS(7)
- Vars
- P(g);OGATE,XR(F)::B(G)+R(E),XP(g)
- Refutation
- K(e);P_SPINP(f),S_FLIGHT
- Try
- R(F);
- Threat
- DUALS(5)
- Vars
- K(e);P_SPINP(f),S_FLIGHT::B(G)+R(E),XB(a)
- B(a);::QAB1(H),XP(f)
- Refutation
- P(d);
- Try
- Q(H);CHECK,XP(g)
- Refutation
- K(e);S_FLIGHT
- Try
- Actual
- Q(H);
- Threat
- R(F)
- Vars
- K(e);P_SPINP(f),S_FLIGHT,XR(E)::QAB(H)
- B(h);N_GUARD,XS(I)::QAB1(H),XP(f)
- B(a);N_GUARD::S(D),XB(a)
- S(c);N_GUARD::R(F),XS(c)
- P(g);N_GUARD::S(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).