MESON Chess Problem Database

Problem Display
PID: 70811 (8/3p3Q/p2K4/B5k1/6p1/6p1/6P1/8 w - - 0 1)

Servais, Albert

To Mat, 1952

8/3p3Q/p2K4/B5k1/6p1/6p1/6P1/8

#2

4 + 5

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Bd2#
    • 1...Kf6
      • 2.Bd8#
  • Tries
    • 1.Kd5?
      • 1...Kf4
        • 2.Bd2#
      • 1...Kf6
        • 2.Bd8#
      • 1...d6!
    • 1.Bc3?
      • 1...Kf4
        • 2.Bd2#
      • 1...a5!
    • 1.Qg6+?
      • 1...Kf4
        • 2.Bd2#
      • 1...Kh4
        • 2.Bd8#
        • 2.Qh6#
      • 1...Kxg6!
    • 1.Qh5+?
      • 1...Kf4
        • 2.Qe5#
      • 1...Kf6
        • 2.Bc3#
      • 1...Kxh5!
  • Keys
    • 1.Qf7!
      • 1...Kh4
        • 2.Bd8#
      • 1...Kh6
        • 2.Bd2#

This anticipates 65341(1953), 88130(1992), 134329(1999), 79156(2004)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(c);S_FLIGHT::B(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • P(e);
    • Try
      • B(B);
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • P(d);
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);P-FLIGHT,XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(D)
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);P-FLIGHT,XQ(D)
  • Actual
    • Q(D);
    • Vars
      • K(c);S_FLIGHT::B(B)
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