MESON Chess Problem Database

Problem Display
PID: 241855 (8/8/8/4B3/8/5p2/1p3k2/1B1K3Q w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1931

8/8/8/4B3/8/5p2/1p3k2/1B1K3Q

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qe1#
  • Tries
    • 1.Kc2?
      • 1...Ke3
        • 2.Qe1#
      • 1...Ke2!
    • 1.Qf1+?
      • 1...Ke3
        • 2.Qe1#
      • 1...Kxf1!
  • Keys
    • 1.Qh2+!
      • 1...Kf1
        • 2.Bd3#
      • 1...Ke3
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR2(C)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT,XQ(C)
  • Actual
    • Q(C);CHECK
    • Vars
      • K(b);P-FLIGHT::B(A)
      • K(b);OGATE,S_FLIGHT::QAB1(C)
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