MESON Chess Problem Database

Problem Display
PID: 241884 (8/8/8/Q7/1pk5/P3P3/3K4/1B6 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1931

8/8/8/Q7/1pk5/P3P3/3K4/1B6

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Qxb4#
    • 1...bxa3
      • 2.Ba2#
    • 1...b3
      • 2.Bd3#
  • Tries
    • 1.Kc2?
      • 1...bxa3
        • 2.Ba2#
      • 1...b3+!
    • 1.Bc2?
      • 1...b3
        • 2.Bd3#
      • 1...bxa3!
    • 1.Be4?
      • threat
        • 2.Bd5#
        • 2.Qxb4#
        • 2.Qd5#
      • 1...bxa3
        • 2.Bd5#
      • 1...b3
        • 2.Bd3#
        • 2.Bd5#
        • 2.Qb4#
        • 2.Qd5#
      • 1...Kb3!
    • 1.Qb6?
      • 1...Kb3
        • 2.Qxb4#
      • 1...bxa3
        • 2.Ba2#
      • 1...b3
        • 2.Qc6#
      • 1...Kd5!
    • 1.Qb5+?
      • 1...Kb3
        • 2.Qxb4#
      • 1...Kxb5!
    • 1.Qc5+?
      • 1...Kb3
        • 2.Qxb4#
      • 1...Kxc5!
    • 1.a4?
      • 1...b3
        • 2.Bd3#
        • 2.Qb5#
      • 1...Kb3!
    • 1.e4?
      • threat
        • 2.Qxb4#
        • 2.Qd5#
      • 1...Kb3
        • 2.Qxb4#
      • 1...Kd4
        • 2.Qd5#
      • 1...b3
        • 2.Qb4#
        • 2.Qd5#
      • 1...bxa3!
  • Keys
    • 1.Ke2!
      • 1...Kb3
        • 2.Qxb4#
      • 1...Kc3
        • 2.Qxb4#
      • 1...bxa3
        • 2.Ba2#
      • 1...b3
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR1(E),XP(a)
    • P(a);N_GUARD,XP(C)::B(A)
    • P(a);SBLOCK::B(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(a);N_GUARD,XP(C)::B(A)
      • Refutation
        • P(a);CHECK
    • Try
      • B(A);
      • Vars
        • P(a);SBLOCK::B(A)
      • Refutation
        • P(a);XP(C)
    • Try
      • B(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(a);XP(C)::B(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(E),XP(a)
        • P(a);N_GUARD,XP(C)::B(A)
        • P(a);SBLOCK::QAR2(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(E),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(E),XP(a)
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
    • Try
      • P(C);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::QAR1(E),XP(a)
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • P(a);XP(C)
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(b);S_FLIGHT::QAR1(E),XP(a)
      • K(b);P-FLIGHT,P_SPINP(a)::QAB1(E),XP(a)
      • P(a);N_GUARD,XP(C)::B(A)
      • P(a);SBLOCK::B(A)
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