MESON Chess Problem Database

Problem Display
PID: 227792 (8/8/8/6p1/6Pp/7k/5K2/5bQ1 w - - 0 1)

Zilahi, Zoltan

Magyar Sakkvilag, 1926

8/8/8/6p1/6Pp/7k/5K2/5bQ1

#2

3 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be2
      • 2.Qg2#
    • 1...Bg2
      • 2.Qxg2#
    • 1...Bd3
      • 2.Qg2#
    • 1...Bc4
      • 2.Qg2#
    • 1...Bb5
      • 2.Qg2#
    • 1...Ba6
      • 2.Qg2#
  • Tries
    • 1.Kf3?
      • threat
        • 2.Qh1#
      • 1...Bg2+
        • 2.Qxg2#
      • 1...Be2+!
    • 1.Qxf1+?
      • 1...Kh2
        • 2.Qg2#
      • 1...Kxg4!
  • Keys
    • 1.Qh1+!
      • 1...Kxg4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • B(a);N_GUARD::QAB1(A)
    • B(a);N_GUARD::QAB1(A),XB(a)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAR2(A)
      • Vars
        • B(a);CHECK,N_GUARD::QAB1(A),XB(a)
      • Refutation
        • B(a);CHECK
    • Try
      • Q(A);CHECK,XB(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT,XP(C)
  • Actual
    • Q(A);CHECK
    • Vars
      • K(b);S_FLIGHT,XP(C)::QAB1(A)
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Developed and maintained by Brian Stephenson.
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