MESON Chess Problem Database

Problem Display
PID: 163524 (2N2b2/1p3N1K/4Q3/2k2p1R/P1p5/P1B5/p7/1b1r4 w - - 0 1)

Zelepukhin, Nikolai Pavlovich

Novi Temi, 1973

2N2b2/1p3N1K/4Q3/2k2p1R/P1p5/P1B5/p7/1b1r4

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Bb4#
    • 1...Rd5
      • 2.Qb6#
  • Tries
    • 1.Rxf5+?
      • 1...Rd5
        • 2.Qxd5#
        • 2.Qb6#
      • 1...Bxf5+!
    • 1.Qd7?
      • threat
        • 2.Bb4#
        • 2.Qb5#
      • 1...Rd6
        • 2.Qb5#
      • 1...Bd6
        • 2.Qb5#
      • 1...Rd5
        • 2.Qb5#
        • 2.Qc7#
      • 1...b5
        • 2.Bb4#
        • 2.Qxb5#
      • 1...Rxd7!
    • 1.Qe5+?
      • 1...Rd5
        • 2.Qc7#
      • 1...Kc6!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qxc4#
      • 1...Rd7+
        • 2.Sxd7#
      • 1...f4+
        • 2.Sd3#
      • 1...Rd4
        • 2.Bb4#
      • 1...Rd5
        • 2.Qb6#
      • 1...Bd3
        • 2.Sd7#
      • 1...b5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(b);SBLOCK::B(B)
    • R(b);N_SPINP(f),SBLOCK::QAB1(E)
  • Tries
    • Try
      • R(D);CHECK,P_SPINR(D),XP(f)
      • Refutation
        • B(a);CHECK,XR(D)
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR1(E)
        • B(h);::QAR1(E)
      • Refutation
        • R(b);P_PINS(F),XQ(E)
    • Try
      • Q(E);CHECK,N_PINP(f)
      • Vars
        • R(b);P_SPINR(b),SBLOCK::QAR2(E)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • S(F);N_PINP(f)
    • Threat
      • QAR1(E),XP(d)
    • Vars
      • R(b);CHECK,N_GUARD::S(F),XR(b)
      • P(f);CHECK::R(D)+S(F),DCHECK
      • R(b);SBLOCK::B(B)
      • R(b);SBLOCK::QAB1(E)
      • B(a);S_CUTR(b)::S(F)
      • P(g);N_GUARD::QAR1(E)
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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).