MESON Chess Problem Database
Problem Display
PID: 69782 (8/PN1pR3/1B1P1Q2/1P1k3q/1r6/1pPBP3/1Kn1n3/1b2r3 w - - 0 1)
Lacny, Ludovit
2nd HM., Praca, 1949
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Qf3
- 2.Re5#
- 2.Qe5#
- 1...Qg4
- 2.Re5#
- 2.Qe5#
- 1...Qg6
- 2.Re5#
- 2.Qe5#
- 1...Qf7
- 2.Re5#
- 2.Qe5#
- 2.Qxf7#
- 1...Qe8
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Qh1
- 2.Re5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 2.Qf7#
- 1...Qh2
- 2.Qf7#
- 1...Qh3
- 2.Re5#
- 2.Qe5#
- 1...Qh4
- 2.Re5#
- 2.Qe5#
- 2.Qf5#
- 2.Qf7#
- 1...Qe5
- 2.Rxe5#
- 2.Qxe5#
- 1...Qf5
- 2.Qxf5#
- 1...Qg5
- 2.Qxg5#
- 2.Qf7#
- 1...Qh6
- 2.Re5#
- 2.Qe5#
- 2.Qf5#
- 1...Qh7
- 2.Re5#
- 2.Qe5#
- 1...Qh8
- 2.Re5#
- 2.Qf7#
- 1...Scd4
- 2.e4#
- 1...Qf3
- Tries
- 1.Qf3+?
- 1...Re4
- 2.Qxe4#
- 2.c4#
- 1...Qxf3!
- 1...Re4
- 1.a8Q?
- threat
- 2.Sa5#
- 2.Sc5#
- 2.Sd8#
- 1...Ra4
- 2.Sa5#
- 1...Qe8
- 2.Sd8#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Qh8
- 2.Sd8#
- 2.Re5#
- 2.Qf7#
- 1...Rc4
- 2.Sc5#
- 1...Scd4
- 2.e4#
- 1...Sed4!
- threat
- 1.a8B?
- threat
- 2.Sa5#
- 2.Sc5#
- 2.Sd8#
- 1...Ra4
- 2.Sa5#
- 1...Qe8
- 2.Sd8#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Qh8
- 2.Sd8#
- 2.Re5#
- 2.Qf7#
- 1...Rc4
- 2.Sc5#
- 1...Scd4
- 2.e4#
- 1...Sed4!
- threat
- 1.Qf3+?
- Keys
- 1.Sa5!
- threat
- 2.a8Q#
- 2.a8B#
- 1...Rxb5
- 2.Bc4#
- 2.Be4#
- 2.c4#
- 2.e4#
- 2.a8Q#
- 2.a8B#
- 1...Sxe3
- 2.a8Q#
- 2.a8B#
- 1...Sxc3
- 2.a8Q#
- 2.a8B#
- 1...Qf3
- 2.Re5#
- 2.Qe5#
- 2.a8Q#
- 2.a8B#
- 1...Qg4
- 2.Re5#
- 2.Qe5#
- 2.a8Q#
- 2.a8B#
- 1...Qg6
- 2.Re5#
- 2.Qe5#
- 2.a8Q#
- 2.a8B#
- 1...Qf7
- 2.Re5#
- 2.Qe5#
- 2.a8Q#
- 2.a8B#
- 1...Qe8
- 2.Qe5#
- 1...Qh1
- 2.Re5#
- 2.Qe5#
- 2.a8Q#
- 2.a8B#
- 1...Qh2
- 2.a8Q#
- 2.a8B#
- 1...Qh3
- 2.Re5#
- 2.Qe5#
- 2.a8Q#
- 2.a8B#
- 1...Qh4
- 2.Re5#
- 2.Qe5#
- 2.a8Q#
- 2.a8B#
- 1...Qe5
- 2.Rxe5#
- 2.Qxe5#
- 2.a8Q#
- 2.a8B#
- 1...Qf5
- 2.a8Q#
- 2.a8B#
- 1...Qg5
- 2.a8Q#
- 2.a8B#
- 1...Qh6
- 2.Re5#
- 2.Qe5#
- 2.a8Q#
- 2.a8B#
- 1...Qh7
- 2.Re5#
- 2.Qe5#
- 2.a8Q#
- 2.a8B#
- 1...Qh8
- 2.Re5#
- 1...Rc1
- 2.a8Q#
- 2.a8B#
- 1...Rd1
- 2.a8Q#
- 2.a8B#
- 1...Rf1
- 2.a8Q#
- 2.a8B#
- 1...Rg1
- 2.a8Q#
- 2.a8B#
- 1...Rh1
- 2.a8Q#
- 2.a8B#
- 1...Ra4
- 2.a8Q#
- 2.a8B#
- 1...Rc4
- 2.Bxc4#
- 1...Rd4
- 2.a8Q#
- 2.a8B#
- 1...Re4
- 2.Bxe4#
- 2.a8Q#
- 2.a8B#
- 1...Rf4
- 2.a8Q#
- 2.a8B#
- 1...Rg4
- 2.a8Q#
- 2.a8B#
- 1...Rh4
- 2.a8Q#
- 2.a8B#
- 1...Ba2
- 2.a8Q#
- 2.a8B#
- 1...Sa1
- 2.a8Q#
- 2.a8B#
- 1...Sa3
- 2.a8Q#
- 2.a8B#
- 1...Scd4
- 2.e4#
- 1...Sc1
- 2.a8Q#
- 2.a8B#
- 1...Sg1
- 2.a8Q#
- 2.a8B#
- 1...Sg3
- 2.a8Q#
- 2.a8B#
- 1...Sed4
- 2.Be4#
- 1...Sf4
- 2.a8Q#
- 2.a8B#
- threat
- 1.Sa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(h);N_GUARD::QAB(H)
- Q(h);N_GUARD::QAR2(H),XQ(h)
- S(c);S_CUTR(f)::P(D)
- Tries
- Try
- Q(H);CHECK
- Refutation
- Q(h);XQ(H)
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- R(f);::QAB(I)+S(J)
- S(c);S_CUTR(f)::P(D)
- Refutation
- S(d);
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- R(f);::B(I)+S(J)
- S(c);S_CUTR(f)::P(D)
- Refutation
- S(d);
- Try
- Actual
- S(J);
- Threat
- P=Q
- Vars
- S(c);XP(D)::P=Q
- S(d);XP(B)::P=Q
- Q(h);N_GUARD::QAR1(H)
- Q(h);::P=Q
- Q(h);N_GUARD::R1(K)
- R(b);::P=Q
- R(f);::P=Q
- R(f);N_GUARD::B(C),XR(f)
- B(a);::P=Q
- S(c);::P=Q
- S(c);S_CUTR(f)::P(D)
- S(d);::P=Q
- S(d);S_CUTR(f)::B(C)
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).