MESON Chess Problem Database

Problem Display
PID: 231528 (8/3p4/3K1R2/5B2/5k2/7Q/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1927

8/3p4/3K1R2/5B2/5k2/7Q/8/8

#2

4 + 2

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Qh6#
  • Tries
    • 1.Kd5?
      • 1...Kg5
        • 2.Qh6#
      • 1...d6!
    • 1.Kxd7?
      • 1...Kg5
        • 2.Qh6#
      • 1...Ke5!
    • 1.Be6+?
      • 1...Kg5
        • 2.Qh6#
      • 1...Ke4!
    • 1.Bxd7+?
      • 1...Kg5
        • 2.Qh6#
      • 1...Ke4!
    • 1.Re6?
      • threat
        • 2.Qg4#
      • 1...Kg5
        • 2.Qg4#
      • 1...dxe6!
  • Keys
    • 1.Bh7+!
      • 1...Kg5
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(b);
    • Try
      • K(C);P-FLIGHT,XP(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);CHECK,XP(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(D);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • P(b);XR(D)
  • Actual
    • B(B);CHECK
    • Vars
      • K(a);S_FLIGHT::R1(D)
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