MESON Chess Problem Database

Problem Display
PID: 258501 (4N2K/1p2b1pP/4r3/7n/k3p3/8/1R6/6Q1 w - - 0 1)

Leontieva, Nadezhda Aleksandrovna

Sp. Comm., Pidlivailo-75 JT (Chervony Girnik), 2002

4N2K/1p2b1pP/4r3/7n/k3p3/8/1R6/6Q1

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ka3
      • 2.Qa1#
    • 1...Rd6
      • 2.Qa1#
    • 1...Bh4
      • 2.Qa1#
    • 1...Bg5
      • 2.Qa1#
    • 1...Bd6
      • 2.Qa7#
    • 1...Bf6
      • 2.Qa1#
    • 1...Bd8
      • 2.Qa1#
  • Tries
    • 1.Qd1+?
      • 1...Ka3
        • 2.Qb3#
        • 2.Qa1#
      • 1...Ka5!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qa7#
        • 2.Qa1#
      • 1...Ka3
        • 2.Qa1#
      • 1...Ka5
        • 2.Qa7#
        • 2.Qa1#
      • 1...Rxd6
        • 2.Qa1#
      • 1...Bxd6
        • 2.Qa7#
      • 1...Re5
        • 2.Qa1#
      • 1...Bd8
        • 2.Qa1#
      • 1...e3
        • 2.Qa1#
      • 1...b6
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • K(a);P-FLIGHT,S_CUTB(f)::QAR2(A)
    • R(d);S_CUTB(f)::QAR(A)
    • B(f);N_GUARD,SBLOCK::QAR(A)
    • B(f);N_GUARD::QAR(A)
    • B(f);S_CUTR(d)::QAR(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(D);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::QAR2(A)
      • R(d);XS(D)::QAR(A)
      • B(f);XS(D)::QAR(A)
      • R(d);::QAR(A)
      • B(f);::QAR(A)
      • P(b);::QAR(A)
      • P(e);::QAR(A)
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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).