MESON Chess Problem Database

Problem Display
PID: 241818 (8/2p1N3/2Q5/2p5/1kN5/8/2K5/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1929

8/2p1N3/2Q5/2p5/1kN5/8/2K5/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Qa4#
  • Tries
    • 1.Kd2?
      • 1...Kxc4
        • 2.Qa4#
      • 1...Kb3!
    • 1.Qb7+?
      • 1...Ka4
        • 2.Qb3#
      • 1...Kxc4!
    • 1.Qd7?
      • 1...Kxc4
        • 2.Qa4#
      • 1...c6!
    • 1.Qe8?
      • 1...Kxc4
        • 2.Qa4#
      • 1...c6!
    • 1.Qxc5+?
      • 1...Ka4
        • 2.Sb2#
        • 2.Qa5#
      • 1...Kxc5!
  • Keys
    • 1.Qa6!
      • 1...c6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b),XS(B)::QAR2(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b),XS(B)::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,XS(B)
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT,XS(B)::QAR2(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT,XS(B)::QAR2(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);CHECK,XP(b)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Vars
      • P(c);::S(D),XP(c)
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Developed and maintained by Brian Stephenson.
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