MESON Chess Problem Database

Problem Display
PID: 152805 (8/3K4/6pQ/4pk2/8/4R3/8/4N3 w - - 0 1)

Velikhanov, Kenan

StrateGems, 2011

8/3K4/6pQ/4pk2/8/4R3/8/4N3

#2

4 + 3

5454 Near Snap 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Rf3#
  • Tries
    • 1.Sd3?
      • 1...Kf6
        • 2.Rf3#
      • 1...e4
        • 2.Qf4#
      • 1...g5
        • 2.Qe6#
      • 1...Kg4!
    • 1.Sf3?
      • threat
        • 2.Qg5#
      • 1...Kf6
        • 2.Qf8#
      • 1...g5
        • 2.Qxg5#
      • 1...Kg4!
    • 1.Qxg6+?
      • 1...Kf4
        • 2.Sg2#
        • 2.Rf3#
        • 2.Re4#
      • 1...Kxg6!
  • Keys
    • 1.Sg2!
      • 1...Kg4
        • 2.Qxg6#
      • 1...Kf6
        • 2.Rf3#
      • 1...e4
        • 2.Qf4#
      • 1...g5
        • 2.Qe6#

Anticipated by 7376(1999)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,P_SPINP(c)::R(B)
  • Tries
    • Try
      • S(A);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::R(B)
        • P(a);N_GUARD::QAR1(C)
        • P(c);OGATE,SBLOCK::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Threat
        • QAR1(C)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAR2(C)
        • P(c);::QAR1(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK,XP(c)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • S(A);
    • Vars
      • K(b);S_FLIGHT::QAR2(C),XP(c)
      • K(b);P-FLIGHT,P_SPINP(c)::R(B)
      • P(a);N_GUARD::QAR1(C)
      • P(c);OGATE,SBLOCK::QAB1(C)
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