MESON Chess Problem Database

Problem Display
PID: 3164 (5Q2/3kp3/1P6/3PKP2/8/8/8/8 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Source?, 1941

5Q2/3kp3/1P6/3PKP2/8/8/8/8

#2

5 + 2

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
3713 Snap 2007
5454 Near Snap 2008

SOLUTION

  • SOUND
  • Sets
    • 1...e6
      • 2.fxe6#
  • Tries
    • 1.Ke4?
      • 1...e5
        • 2.fxe5 ep#
      • 1...e6
        • 2.fxe6#
      • 1...Kd6!
    • 1.Kf4?
      • 1...e5+
        • 2.fxe5 ep#
      • 1...e6
        • 2.fxe6#
      • 1...Kd6!
    • 1.Qxe7+?
      • 1...Kc8
        • 2.Qc7#
      • 1...Kxe7!
  • Keys
    • 1.Kd4!
      • 1...e5+
        • 2.fxe5 ep#
      • 1...Kd6
        • 2.Qd8#
      • 1...e6
        • 2.fxe6#

Anticipated by 46960(1903), 19071(1912)

This anticipates 23708(1964)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE::P(C),XP(b)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(b);OGATE::P(C),XP(b),EP
        • P(b);OGATE::P(C),XP(b)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(b);CHECK,OGATE::P(C),XP(b),EP
        • P(b);OGATE::P(C),XP(b)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(E);CHECK,XP(b)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • P(b);CHECK,OGATE::P(C),XP(b),EP
      • K(a);P-FLIGHT,P_SPINP(b)::QAR2(E)
      • P(b);OGATE::P(C),XP(b)
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