MESON Chess Problem Database

Problem Display
PID: 241782 (8/8/2K5/N5P1/3k1p2/5Q2/5P2/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1928

8/8/2K5/N5P1/3k1p2/5Q2/5P2/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qd5#
  • Tries
    • 1.Sb3+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Kc4!
    • 1.Sb7?
      • 1...Ke5
        • 2.Qd5#
      • 1...Kc4!
    • 1.Qd1+?
      • 1...Ke4
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Kc3!
    • 1.Qe2?
      • 1...f3
        • 2.Qe3#
      • 1...Kc3!
    • 1.Qd3+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Kxd3!
  • Keys
    • 1.Qb3!
      • 1...Ke4
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...f3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(B)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(B)
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • P(b);N_GUARD::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::QAB1(B)
      • K(a);S_FLIGHT::QAR1(B)
      • P(b);N_GUARD::QAB1(B)
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