MESON Chess Problem Database

Problem Display
PID: 23461 (8/7p/7K/5p2/6k1/8/7Q/6N1 w - - 0 1)

Melnichenko, Viktor Oleksandrovich

The Problemist, 1988

8/7p/7K/5p2/6k1/8/7Q/6N1

#2

3 + 3

2786 More Fun with Chess Miniatures 2000
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Qh3#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qg3#
        • 2.Qh5#
      • 1...f4
        • 2.Qh5#
      • 1...Kf3!
    • 1.Qd6?
      • 1...Kh4
        • 2.Qf4#
      • 1...f4!
    • 1.Qc7?
      • 1...Kh4
        • 2.Qf4#
      • 1...f4!
    • 1.Qb8?
      • 1...Kh4
        • 2.Qf4#
      • 1...f4!
    • 1.Qg2+?
      • 1...Kh4
        • 2.Sf3#
        • 2.Qh3#
        • 2.Qg5#
      • 1...Kf4!
  • Keys
    • 1.Qe5!
      • 1...Kh4
        • 2.Qf4#
      • 1...f4
        • 2.Qg5#

Anticipated by 227810(1926)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAB1(B)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::QAR2(B)
      • P(b);OGATE::QAR1(B)
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