MESON Chess Problem Database

Problem Display
PID: 214402 (8/6p1/1Q4K1/3k4/8/5N2/4B3/8 w - - 0 1)

Lewis, Robert Tony

The Problemist, 1987

8/6p1/1Q4K1/3k4/8/5N2/4B3/8

#2

4 + 2

3713 Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qd4#
  • Tries
    • 1.Kg5?
      • 1...Ke4
        • 2.Qd4#
        • 2.Qe6#
      • 1...g6!
    • 1.Bd1?
      • 1...Ke4
        • 2.Qd4#
      • 1...Kc4!
    • 1.Qd6+?
      • 1...Ke4
        • 2.Qe5#
        • 2.Qd4#
      • 1...Kxd6!
  • Keys
    • 1.Qc7!
      • 1...Ke4
        • 2.Qe5#
      • 1...Ke6
        • 2.Bc4#

Anticipated by 23432(1926)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(C)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Refutation
        • P(b);
    • Try
      • B(A);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);S_FLIGHT::B(A)
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