MESON Chess Problem Database

Problem Display
PID: 241974 (8/8/8/8/5K2/6B1/4p1k1/4Q3 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

8/8/8/8/5K2/6B1/4p1k1/4Q3

#2

3 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kh3
      • 2.Qh1#
  • Tries
    • 1.Kf5?
      • 1...Kf3
        • 2.Qf2#
      • 1...Kh3!
    • 1.Bf2?
      • 1...Kh3
        • 2.Qh1#
      • 1...Kh2!
    • 1.Bh2?
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxh2!
    • 1.Bh4?
      • 1...Kh3
        • 2.Qg3#
        • 2.Qh1#
      • 1...Kh2!
    • 1.Qg1+?
      • 1...Kh3
        • 2.Qh2#
        • 2.Qh1#
      • 1...Kxg1!
    • 1.Qxe2+?
      • 1...Kh1
        • 2.Qf1#
        • 2.Qh2#
      • 1...Kh3
        • 2.Qf1#
        • 2.Qh2#
      • 1...Kg1!
  • Keys
    • 1.Qf2+!
      • 1...Kh1
        • 2.Qh2#
      • 1...Kh3
        • 2.Qh2#

FEATURES

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