MESON Chess Problem Database

Problem Display
PID: 28904 (8/8/K2p4/3kp3/8/7B/2N5/6Q1 w - - 0 1)

St Maurice, Charles-Ephrem

La Presse, 1923

8/8/K2p4/3kp3/8/7B/2N5/6Q1

#2

4 + 3

3248 Miniatures canadiennes 2000
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Kb5?
      • 1...e4
        • 2.Qd4#
        • 2.Qg5#
      • 1...Ke4!
    • 1.Be6+?
      • 1...Ke4
        • 2.Qe3#
      • 1...Kc6
        • 2.Qb6#
      • 1...Kxe6!
    • 1.Qd4+?
      • 1...Kc6
        • 2.Qc4#
      • 1...exd4!
  • Keys
    • 1.Qf1!
      • 1...Ke4
        • 2.Bg2#
      • 1...Kc5
        • 2.Qb5#
      • 1...Kc6
        • 2.Qc4#
      • 1...e4
        • 2.Qb5#

Anticipated by 1967(1863), 62402(1879), 224472(1888)

This anticipates 57768(1995), 160723(2016)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XB(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • P(b);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::B(C)
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::QAR2(A)
      • P(b);SBLOCK::QAR2(A)
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