MESON Chess Problem Database

Problem Display
PID: 201688 (Q2N4/7K/5N2/4ppk1/8/8/6P1/4B3 w - - 0 1)

Elekes, Dezso

Bekes, 1922

Q2N4/7K/5N2/4ppk1/8/8/6P1/4B3

#2

6 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Bh4#
  • Tries
    • 1.Sf7+?
      • 1...Kf4
        • 2.Qf3#
      • 1...Kxf6!
    • 1.Bh4+?
      • 1...Kf4
        • 2.Qf3#
      • 1...Kxh4!
    • 1.Qe4?
      • threat
        • 2.Bh4#
        • 2.Qh4#
      • 1...Kxf6
        • 2.Bh4#
        • 2.Qh4#
      • 1...f4
        • 2.Qg6#
        • 2.Qxe5#
      • 1...fxe4!
    • 1.Qd5?
      • 1...Kf4
        • 2.Qd2#
      • 1...Kxf6
        • 2.Bh4#
      • 1...f4
        • 2.Qxe5#
      • 1...e4!
    • 1.Qa5?
      • 1...Kf4
        • 2.Qd2#
      • 1...Kxf6
        • 2.Bh4#
      • 1...f4
        • 2.Qxe5#
      • 1...e4!
  • Keys
    • 1.Qa1!
      • 1...Kf4
        • 2.Qc1#
      • 1...Kxf6
        • 2.Bh4#
      • 1...e4
        • 2.Se6#
      • 1...f4
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT,XS(C)::B(A)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(E)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • B(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(E)
      • Refutation
        • K(c);S_FLIGHT,XB(A)
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);XQ(E)
    • Try
      • Q(E);
      • Vars
        • K(c);S_FLIGHT::QAB(E)
        • K(c);S_FLIGHT,XS(C)::B(A)
        • P(b);OGATEB,P_SPINP(a)::QAR2(E),XP(a)
      • Refutation
        • P(a);P_SPINP(b)
    • Try
      • Q(E);
      • Vars
        • K(c);S_FLIGHT::QAB(E)
        • K(c);S_FLIGHT,XS(C)::B(A)
        • P(b);OGATEB,P_SPINP(a)::QAR2(E),XP(a)
      • Refutation
        • P(a);P_SPINP(b)
  • Actual
    • Q(E);
    • Vars
      • K(c);S_FLIGHT::QAB(E)
      • K(c);P_SPINP(a),S_FLIGHT,XS(C)::B(A)
      • P(a);::S(F)
      • P(b);OGATEB::QAR2(E),XP(a)
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