MESON Chess Problem Database

Problem Display
PID: 242021 (1Q6/5N2/2p5/1Pk5/8/2K5/2P5/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1936

1Q6/5N2/2p5/1Pk5/8/2K5/2P5/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qe5#
    • 1...cxb5
      • 2.Qd6#
  • Tries
    • 1.Kd3?
      • 1...Kd5
        • 2.Qe5#
        • 2.Qd6#
      • 1...cxb5
        • 2.Qd6#
      • 1...Kb4!
    • 1.Qa7+?
      • 1...Kxb5
        • 2.Sd6#
      • 1...Kd5!
    • 1.Qc7?
      • threat
        • 2.Qxc6#
      • 1...Kd5
        • 2.Qe5#
        • 2.Qxc6#
      • 1...Kxb5!
    • 1.Qb6+?
      • 1...Kd5
        • 2.Qxc6#
      • 1...Kxb6!
    • 1.Qb7?
      • threat
        • 2.Qxc6#
      • 1...Kd5
        • 2.Qxc6#
      • 1...cxb5!
    • 1.Qd8?
      • 1...cxb5
        • 2.Qd6#
      • 1...Kxb5!
    • 1.b6?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kb5!
  • Keys
    • 1.Kb3!
      • 1...Kd4
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...cxb5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(E)
    • P(b);SBLOCK,XP(C)::QAB1(E)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(b);SBLOCK,XP(C)::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(C)::S(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);P_PINP(b)
      • Threat
        • QAR1(E),XP(b)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XP(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Threat
        • QAR1(E),XP(b)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAB1(E),XP(b)
      • Refutation
        • P(b);XP(C)
    • Try
      • Q(E);
      • Vars
        • P(b);SBLOCK,XP(C)::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • P(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);P-FLIGHT::QAR1(E)
      • P(b);SBLOCK,XP(C)::QAB1(E)
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