MESON Chess Problem Database

Problem Display
PID: 99611 (8/8/5p2/5N1R/4pk2/8/4K3/3Q4 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1930

8/8/5p2/5N1R/4pk2/8/4K3/3Q4

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kg4
      • 2.Ke3#
    • 1...Ke5
      • 2.Qd6#
    • 1...e3
      • 2.Qd4#
  • Tries
    • 1.Ke1?
      • 1...Ke5
        • 2.Qd6#
      • 1...e3!
    • 1.Kf1?
      • 1...Ke5
        • 2.Qd6#
      • 1...e3!
    • 1.Kf2?
      • 1...Ke5
        • 2.Qd6#
      • 1...e3+!
    • 1.Qa1?
      • 1...e3
        • 2.Qd4#
      • 1...Kg4!
    • 1.Qd2+?
      • 1...Ke5
        • 2.Qd6#
      • 1...e3
        • 2.Qd4#
      • 1...Kg4!
    • 1.Qd5?
      • 1...e3
        • 2.Qd4#
      • 1...Kg4!
    • 1.Qd7?
      • 1...Ke5
        • 2.Qd6#
      • 1...e3
        • 2.Qd4#
      • 1...Kg4!
    • 1.Qd8?
      • 1...Ke5
        • 2.Qd6#
      • 1...e3
        • 2.Qd4#
      • 1...Kg4!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qd6#
      • 1...Kg3
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(b);P-FLIGHT::QAB(A)+K(B)
    • K(b);S_FLIGHT::QAB1(A)
    • P(a);OGATEB::QAR2(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(A);
      • Vars
        • P(a);OGATEB::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • P(a);OGATEB,P_SPINP(a)::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(a);OGATEB::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • P(a);OGATEB::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • P(a);OGATEB::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAB(A)
    • Vars
      • K(b);S_FLIGHT::QAB(A)
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