MESON Chess Problem Database
Problem Display
PID: 258486 (Q7/NP2r3/1P1P3R/Kpk2b2/5B2/2Pp4/pN6/q3R2B w - - 0 1)
Leontieva, Nadezhda Aleksandrovna
Problem (Zagreb), 1973
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Re3
- 2.Bxe3#
- 1...Re5
- 2.Rxe5#
- 1...Re6
- 2.Qc8#
- 1...Rxb7
- 2.Be3#
- 2.Re5#
- 1...Rc7
- 2.Be3#
- 2.Re5#
- 1...Rd7
- 2.Be3#
- 2.Re5#
- 1...Rf7
- 2.Be3#
- 2.Re5#
- 1...Rg7
- 2.Be3#
- 2.Re5#
- 1...Rh7
- 2.Be3#
- 2.Re5#
- 1...Re3
- Tries
- 1.Qc8+?
- 1...Rc7
- 2.Be3#
- 2.Re5#
- 2.Qxf5#
- 2.Qxc7#
- 1...Bxc8!
- 1...Rc7
- 1.Qh8?
- threat
- 2.Qd4#
- 1...Re5
- 2.Rxe5#
- 2.Qxe5#
- 1...Rg7
- 2.Be3#
- 2.Re5#
- 1...Re4!
- threat
- 1.b8Q?
- threat
- 2.Qd5#
- 2.Qc6#
- 1...Re4
- 2.Qc6#
- 2.Qc7#
- 1...Re5
- 2.Rxe5#
- 2.Qc6#
- 2.Qc7#
- 1...Rb7
- 2.Be3#
- 2.Re5#
- 1...Rc7
- 2.Be3#
- 2.Re5#
- 2.Qd5#
- 2.Qxc7#
- 1...Be4
- 2.Be3#
- 1...Be6
- 2.Be3#
- 2.Qc6#
- 1...Bd7
- 2.Qd5#
- 1...Rxa7+!
- threat
- 1.b8S?
- threat
- 2.Sa6#
- 2.Qd5#
- 2.Qc6#
- 1...Qxb2
- 2.Qd5#
- 2.Qc6#
- 1...Re4
- 2.Sa6#
- 2.Qc6#
- 1...Re5
- 2.Sa6#
- 2.Rxe5#
- 2.Qc6#
- 1...Rb7
- 2.Sa6#
- 2.Be3#
- 2.Re5#
- 1...Rc7
- 2.Sa6#
- 2.Be3#
- 2.Re5#
- 2.Qd5#
- 1...Be4
- 2.Sa6#
- 2.Be3#
- 1...Be6
- 2.Sa6#
- 2.Qc6#
- 1...Bd7
- 2.Sa6#
- 2.Qd5#
- 1...Bc8
- 2.Qd5#
- 2.Qc6#
- 1...Rxa7+!
- threat
- 1.b8B?
- threat
- 2.Qd5#
- 2.Qc6#
- 1...Re4
- 2.Qc6#
- 1...Re5
- 2.Rxe5#
- 2.Qc6#
- 1...Rb7
- 2.Be3#
- 2.Re5#
- 1...Rc7
- 2.Be3#
- 2.Re5#
- 2.Qd5#
- 1...Be4
- 2.Be3#
- 1...Be6
- 2.Be3#
- 2.Qc6#
- 1...Bd7
- 2.Qd5#
- 1...Rxa7+!
- threat
- 1.b8R?
- threat
- 2.Qd5#
- 2.Qc6#
- 1...Re4
- 2.Qc6#
- 1...Re5
- 2.Rxe5#
- 2.Qc6#
- 1...Rb7
- 2.Be3#
- 2.Re5#
- 1...Rc7
- 2.Be3#
- 2.Re5#
- 2.Qd5#
- 1...Be4
- 2.Be3#
- 1...Be6
- 2.Qc6#
- 1...Bd7
- 2.Qd5#
- 1...Rxa7+!
- threat
- 1.Qc8+?
- Keys
- 1.Qg8!
- threat
- 2.Qd5#
- 1...Re4
- 2.Sxd3#
- 1...Re5
- 2.Rxe5#
- 1...Re6
- 2.Qc8#
- 1...Rf7
- 2.Be3#
- 2.Re5#
- 2.Qg1#
- 1...Be4
- 2.Be3#
- 1...Be6
- 2.Qg1#
- threat
- 1.Qg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(g);N_GUARD::B(E),XR(g)
- R(g);N_GUARD::R(A),XR(g)
- R(g);N_GUARD,S_CUTB(f)::QAR(L)
- Tries
- Try
- Q(L);CHECK
- Refutation
- B(f);XQ(L)
- Try
- Q(L);
- Threat
- QAB1(L)
- Refutation
- R(g);
- Try
- P(K);
- Threat
- DUALS(2)
- Vars
- B(f);S_CUTR(g)::B(E)
- B(f);::QAR1(L)
- Refutation
- R(g);CHECK,XS(J)
- Try
- P(K);
- Threat
- DUALS(3)
- Refutation
- R(g);CHECK,XS(J)
- Try
- P(K);
- Threat
- DUALS(2)
- Vars
- R(g);::QAR1(L)
- B(f);S_CUTR(g)::B(E)
- B(f);::QAR1(L)
- Refutation
- R(g);CHECK,XS(J)
- Try
- P(K);
- Threat
- DUALS(2)
- Vars
- R(g);::QAR1(L)
- B(f);S_CUTR(g)::B(E)
- B(f);::QAR1(L)
- Refutation
- R(g);CHECK,XS(J)
- Try
- Actual
- Q(L);
- Threat
- QAR1(L)
- Vars
- R(g);S_CUTB(f)::S(C),XP(c)
- R(g);N_GUARD::R(A),XR(g)
- R(g);N_GUARD,S_CUTB(f)::QAR(L)
- B(f);S_CUTR(g)::B(E)
- B(f);S_CUTR(g)::QAB(L)
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).