MESON Chess Problem Database

Problem Display
PID: 23708 (5Q2/6pk/8/6KP/8/8/8/8 w - - 0 1)

Pustovoi, Boris

Molodoi sibirjak, 1964

5Q2/6pk/8/6KP/8/8/8/8

#2

3 + 2

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
3713 Snap 2001
5454 Near Snap 2008

SOLUTION

  • SOUND
  • Sets
    • 1...g6
      • 2.hxg6#
  • Tries
    • 1.h6?
      • threat
        • 2.Qxg7#
      • 1...g6
        • 2.Qg7#
      • 1...gxh6+!
  • Keys
    • 1.Kf5!
      • 1...g6+
        • 2.hxg6#
      • 1...Kh6
        • 2.Qh8#
      • 1...g5
        • 2.hxg5 ep#

Anticipated by 46960(1903), 19071(1912), 3164(1941)

FEATURES

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