MESON Chess Problem Database

Problem Display
PID: 47861 (6N1/8/8/4Npkp/Q7/8/6K1/8 w - - 0 1)

Kovalenko, Vitaly Semenovich

Uralski Problemist, 2003

6N1/8/8/4Npkp/Q7/8/6K1/8

#2

4 + 3

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kf3?
      • threat
        • 2.Qf4#
      • 1...f4
        • 2.Qxf4#
      • 1...h4!
    • 1.Kh3?
      • threat
        • 2.Qh4#
      • 1...h4
        • 2.Qxh4#
      • 1...f4!
    • 1.Qc6?
      • 1...Kh4
        • 2.Qf6#
      • 1...f4
        • 2.Qf6#
      • 1...h4
        • 2.Qh6#
      • 1...Kf4!
    • 1.Qa6?
      • 1...Kh4
        • 2.Qf6#
      • 1...f4
        • 2.Qf6#
      • 1...h4
        • 2.Qh6#
      • 1...Kf4!
  • Keys
    • 1.Kg3!
      • threat
        • 2.Qf4#
        • 2.Qh4#
      • 1...f4+
        • 2.Qxf4#
      • 1...h4+
        • 2.Qxh4#

Anticipated by 7613(1992)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAB1(B)
      • Vars
        • P(a);::QAB1(B),XP(a)
      • Refutation
        • P(c);
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAB1(B)
      • Vars
        • P(c);::QAB1(B),XP(c)
      • Refutation
        • P(a);
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAB(B)
        • P(a);::QAB1(B)
        • P(c);::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAB(B)
        • P(a);::QAB1(B)
        • P(c);::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Threat
      • DUALS(2)
    • Vars
      • P(a);CHECK::QAB1(B),XP(a)
      • P(c);CHECK::QAB1(B),XP(c)
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