MESON Chess Problem Database

Problem Display
PID: 88409 (2K5/6B1/3k4/5P2/2Q5/8/8/8 w - - 0 1)

Francey, James

The Problemist, 1931

2K5/6B1/3k4/5P2/2Q5/8/8/8

#2

4 + 1

6490 yacpdb 2009
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke7
      • 2.Qe6#
  • Tries
    • 1.Bh6?
      • 1...Ke7
        • 2.Qe6#
      • 1...Ke5!
    • 1.Qd5+?
      • 1...Ke7
        • 2.Qe6#
        • 2.Qd7#
      • 1...Kxd5!
    • 1.Qd4+?
      • 1...Ke7
        • 2.Qd7#
      • 1...Kc6!
    • 1.Qc6+?
      • 1...Ke7
        • 2.Qd7#
        • 2.Qe6#
      • 1...Kxc6!
  • Keys
    • 1.Qb5!
      • 1...Ke7
        • 2.Qd7#

Anticipated by 205717(1925)

This anticipates 100030(1932)

FEATURES

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