MESON Chess Problem Database

Problem Display
PID: 169361 (8/Q7/8/8/8/8/3Npp2/2K1k3 w - - 0 1)

Novitski, Petr Adrinovich

Sp. Prize, SuperProblem 057. TT, 2012

8/Q7/8/8/8/8/3Npp2/2K1k3

#2

3 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...f1S
      • 2.Sf3#
    • 1...f1B
      • 2.Sf3#
  • Tries
    • 1.Qa5?
      • 1...f1Q
        • 2.Se4#
      • 1...f1B
        • 2.Se4#
      • 1...f1R
        • 2.Se4#
      • 1...f1S!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qxf2#
      • 1...Kf1
        • 2.Qxf2#
      • 1...f1Q
        • 2.Qa5#
      • 1...f1S
        • 2.Qf2#
      • 1...f1B
        • 2.Qf2#
        • 2.Qa5#
      • 1...f1R
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(c);SBLOCK::S(B)
  • Tries
    • Try
      • Q(C);
      • Vars
        • P(c);SBLOCK::QAB(C)+S(B)
      • Refutation
        • P(c);
  • Actual
    • S(B);
    • Threat
      • QAB1(C),XP(c)
    • Vars
      • K(a);P-FLIGHT::QAR1(C),XP(c)
      • P(c);SBLOCK::QAB(C)
      • P(c);::QAB1(C)
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