MESON Chess Problem Database
Problem Display
PID: 258487 (Q1n1q3/1R6/6P1/2P3PN/3BN2p/3b1kpB/3K2R1/8 w - - 0 1)
Leontieva, Nadezhda Aleksandrovna
Problemista, 1970
#2
11 + 6
SOLUTION
- SOUND
- Sets
- 1...Kxe4
- 2.Rd7#
- 1...Qa4
- 2.Rf7#
- 1...Qb5
- 2.Rf7#
- 1...Qf7
- 2.Rxf7#
- 1...Qxe4
- 2.Rf7#
- 1...Bxe4
- 2.Rb3#
- 1...Kxe4
- Tries
- 1.Kc3?
- threat
- 2.Sd2#
- 1...Kxe4
- 2.Rd7#
- 2.Re7#
- 1...Qxe4
- 2.Rf7#
- 1...Bxe4!
- threat
- 1.Re2?
- threat
- 2.Re3#
- 1...Qxe4
- 2.Rf7#
- 1...Bxe4
- 2.Rb3#
- 1...Bxe2!
- threat
- 1.Rf2+?
- 1...Kxe4
- 2.Rd7#
- 1...gxf2!
- 1...Kxe4
- 1.Rxg3+?
- 1...Kxe4
- 2.Rd7#
- 1...hxg3!
- 1...Kxe4
- 1.Kc3?
- Keys
- 1.Kc1!
- threat
- 2.Sd2#
- 1...Kxe4
- 2.Rd7#
- 1...Qxe4
- 2.Rf7#
- 1...Bxe4
- 2.Rb3#
- threat
- 1.Kc1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- K(b);OGATEB,S_FLIGHT,XS(E)::QAB(K)+R(J)
- Q(f);N_GUARD::R(J)
- Q(f);N_GUARD::R(J),XQ(f)
- Q(f);N_GUARD,XS(E)::R(J)
- B(a);OGATEB,XS(E)::R(J)
- Tries
- Try
- K(A);S_FLIGHT
- Threat
- S(E)
- Vars
- Q(f);N_GUARD,XS(E)::R(J)
- Refutation
- B(a);XS(E)
- Try
- R(B);
- Threat
- R1(B)
- Vars
- Q(f);N_GUARD,XS(E)::R(J)
- B(a);OGATEB,XS(E)::R(J)
- Refutation
- B(a);XR(B)
- Try
- R(B);CHECK
- Vars
- K(b);S_CUTP(c),S_FLIGHT,XS(E)::QAB(K)+R(J)
- Refutation
- P(c);XR(B)
- Try
- R(B);CHECK,XP(c)
- Vars
- K(b);S_CUTP(d),S_FLIGHT,XS(E)::QAB(K)+R(J)
- Refutation
- P(d);XR(B)
- Try
- Actual
- K(A);S_FLIGHT
- Threat
- S(E)
- Vars
- K(b);OGATEB,S_FLIGHT,XS(E)::QAB(K)+R(J)
- Q(f);N_GUARD,XS(E)::R(J)
- B(a);OGATEB,XS(E)::R(J)
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).