MESON Chess Problem Database

Problem Display
PID: 241810 (8/8/8/8/4K1NB/4P1p1/4k3/2Q5 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1929

8/8/8/8/4K1NB/4P1p1/4k3/2Q5

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...g2
      • 2.Qe1#
  • Tries
    • 1.Se5?
      • 1...g2
        • 2.Qe1#
      • 1...Kf2!
    • 1.Sf6?
      • 1...g2
        • 2.Qe1#
      • 1...Kf2!
    • 1.Sh6?
      • 1...g2
        • 2.Qe1#
      • 1...Kf2!
    • 1.Qa1?
      • 1...g2
        • 2.Qe1#
      • 1...Kd2!
    • 1.Qb1?
      • 1...g2
        • 2.Qd3#
        • 2.Qe1#
      • 1...Kd2!
    • 1.Qg1?
      • 1...g2
        • 2.Qe1#
      • 1...Kd2!
    • 1.Qh1?
      • 1...g2
        • 2.Qe1#
      • 1...Kd2!
  • Keys
    • 1.Sh2!
      • 1...Kf2
        • 2.Qf1#
      • 1...gxh2
        • 2.Qe1#
      • 1...g2
        • 2.Qe1#
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(b);::QAR1(A)
  • Tries
    • Try
      • S(D);
      • Vars
        • P(b);::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • S(D);
      • Vars
        • P(b);::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • S(D);
      • Vars
        • P(b);::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(A);
      • Vars
        • P(b);::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(a);P-FLIGHT,P_SPINP(b)::QAR1(A)
      • P(b);XS(D)::QAR1(A)
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