MESON Chess Problem Database

Problem Display
PID: 106246 (r3k3/2Qp3K/5p2/3N4/8/8/8/8 w - - 0 1)

Kardos, Tivadar

Karacsonyi lap, 1963

r3k3/2Qp3K/5p2/3N4/8/8/8/8

#2

3 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Qe7#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Qe7#
      • 1...Kf7
        • 2.Qe7#
      • 1...Kd8
        • 2.Qf8#
      • 1...d6!
    • 1.Qxd7+?
      • 1...Kf8
        • 2.Qe7#
      • 1...Kxd7!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qe7#
      • 1...Kf7
        • 2.Qe7#
      • 1...Kd8
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATE::QAR1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(d);S_FLIGHT::QAR1(B)
        • K(d);P-FLIGHT::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);CHECK,XP(b)
      • Vars
        • K(d);P-FLIGHT::QAB1(B)
      • Refutation
        • K(d);S_FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(d);S_FLIGHT::QAR1(B)
      • K(d);P-FLIGHT,P_SPINP(b)::QAR2(B)
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