MESON Chess Problem Database

Problem Display
PID: 227686 (8/3N4/p7/kP6/8/pQ6/K7/8 w - - 0 1)

Schiffert, Gyorgy

Magyar Sakkvilag, 1926

8/3N4/p7/kP6/8/pQ6/K7/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...axb5
      • 2.Qxa3#
  • Tries
    • 1.Ka1?
      • 1...axb5
        • 2.Qxa3#
      • 1...a2!
    • 1.Kb1?
      • 1...axb5
        • 2.Qxa3#
      • 1...a2+!
  • Keys
    • 1.bxa6!
      • 1...Kxa6
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(c);SBLOCK,XP(C)::QAR2(B),XP(a)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(c);SBLOCK,XP(C)::QAR2(B),XP(a)
      • Refutation
        • P(a);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • P(c);SBLOCK,XP(C)::QAR2(B),XP(a)
      • Refutation
        • P(a);CHECK
  • Actual
    • P(C);XP(c)
    • Vars
      • K(b);P-FLIGHT,XP(C)::QAR1(B)
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