MESON Chess Problem Database

Problem Display
PID: 242036 (8/8/7Q/8/4B1k1/4P1p1/8/6RK w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1936

8/8/7Q/8/4B1k1/4P1p1/8/6RK

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...g2+
      • 2.Rxg2#
  • Tries
    • 1.Bd3?
      • 1...Kf3
        • 2.Qf4#
      • 1...g2+!
    • 1.Qf4+?
      • 1...Kh3
        • 2.Bg2#
        • 2.Bf5#
        • 2.Rxg3#
        • 2.Qxg3#
      • 1...Kh5!
    • 1.Qg5+?
      • 1...Kh3
        • 2.Bg2#
        • 2.Bf5#
        • 2.Rxg3#
        • 2.Qxg3#
        • 2.Qh5#
      • 1...Kxg5!
    • 1.Qh2?
      • threat
        • 2.Rxg3#
      • 1...g2+
        • 2.Rxg2#
      • 1...Kg5!
    • 1.Qf6?
      • 1...Kh3
        • 2.Bf5#
      • 1...Kh5
        • 2.Bf3#
      • 1...g2+!
    • 1.Qg6+?
      • 1...Kh3
        • 2.Qh5#
        • 2.Qxg3#
      • 1...Kh4!
    • 1.Qh7?
      • 1...g2+
        • 2.Rxg2#
      • 1...Kg5!
  • Keys
    • 1.Qh8!
      • 1...g2+
        • 2.Rxg2#
      • 1...Kg5
        • 2.Rxg3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);CHECK,OGATEB::R(A),XP(a)
  • Tries
    • Try
      • B(D);
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAR1(E)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Threat
        • R1(A),XP(a)
      • Vars
        • P(a);CHECK,OGATEB::R(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::B(D)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(a);CHECK,OGATEB::R(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(E);
    • Vars
      • P(a);CHECK,OGATEB::R(A),XP(a)
      • K(b);P-FLIGHT::R(A),XP(a)
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