MESON Chess Problem Database

Problem Display
PID: 245163 (8/8/2n5/2Q5/kp6/8/1KP5/1N6 w - - 0 1)

Parkhomenko, Nikolai A

Smena (Moscow), 1993

8/8/2n5/2Q5/kp6/8/1KP5/1N6

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Sc3#
      • 2.cxb3#
  • Tries
    • 1.Sa3?
      • threat
        • 2.Qb5#
      • 1...Sd4
        • 2.Qa7#
      • 1...Sa7
        • 2.Qxa7#
      • 1...bxa3+!
    • 1.c3?
      • 1...bxc3+
        • 2.Sxc3#
      • 1...Sa5
        • 2.Qxb4#
      • 1...Sd4
        • 2.Qxb4#
      • 1...Se5
        • 2.Qxb4#
      • 1...Sa7
        • 2.Qxb4#
      • 1...Se7
        • 2.Qxb4#
      • 1...Sb8
        • 2.Qxb4#
      • 1...Sd8
        • 2.Qxb4#
      • 1...b3!
  • Keys
    • 1.c4!
      • threat
        • 2.Qb5#
      • 1...bxc4 ep+
        • 2.Sxc3#
      • 1...Sd4
        • 2.Qa7#
      • 1...Sa7
        • 2.Qxa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(D)
      • Vars
        • S(c);N_GUARD::QAR(D)
        • S(c);N_GUARD::QAR(D),XS(c)
      • Refutation
        • P(b);CHECK,XS(A)
    • Try
      • P(C);
      • Vars
        • P(b);CHECK,XP(C)::S(A),XP(b)
        • S(c);N_GUARD::QAR1(D),XP(b)
      • Refutation
        • P(b);
  • Actual
    • P(C);
    • Threat
      • QAB1(D)
    • Vars
      • P(b);CHECK,EP,N_GUARD,XP(C)::S(A),XP(b)
      • S(c);N_GUARD::QAR(D)
      • S(c);N_GUARD::QAR(D),XS(c)
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