MESON Chess Problem Database

Problem Display
PID: 22919 (8/3p3Q/3K4/6k1/8/6B1/6P1/8 w - - 0 1)

Pustovoi, Boris

Molodoi sibirjak, 1966

8/3p3Q/3K4/6k1/8/6B1/6P1/8

#2

4 + 2

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kg4
      • 2.Qg6#
    • 1...Kf6
      • 2.Bh4#
  • Tries
    • 1.Kd5?
      • 1...Kg4
        • 2.Qg6#
      • 1...Kf6
        • 2.Bh4#
      • 1...d6!
    • 1.Kxd7?
      • 1...Kg4
        • 2.Qg6#
      • 1...Kf6!
    • 1.Qh5+?
      • 1...Kf6
        • 2.Be5#
      • 1...Kxh5!
  • Keys
    • 1.Qf7!
      • 1...Kg4
        • 2.Qg6#
      • 1...Kh6
        • 2.Bf4#

Anticipated by 4544(1878), 202255(1923)

This anticipates 10900(1969), 11738(1971)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::QAR2(D)
    • K(a);S_FLIGHT::B(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
        • K(a);S_FLIGHT::B(B)
      • Refutation
        • P(b);
    • Try
      • K(C);P-FLIGHT,XP(b)
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::B(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
  • Actual
    • Q(D);
    • Vars
      • K(a);P-FLIGHT::QAR2(D)
      • K(a);S_FLIGHT::B(B)
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