MESON Chess Problem Database

Problem Display
PID: 248901 (8/8/8/6Q1/6P1/3p4/1K2n1N1/3k4 w - - 0 1)

Paslack, Rainer

Die Schwalbe, 1971

8/8/8/6Q1/6P1/3p4/1K2n1N1/3k4

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qh4?
      • threat
        • 2.Qe1#
      • 1...Kd2
        • 2.Qe1#
      • 1...d2
        • 2.Se3#
      • 1...Sg3!
    • 1.Qa5?
      • threat
        • 2.Se3#
        • 2.Qe1#
      • 1...Sc1
        • 2.Qe1#
      • 1...Sg1
        • 2.Qe1#
      • 1...Sg3
        • 2.Qe1#
      • 1...Sd4
        • 2.Qe1#
      • 1...Sf4
        • 2.Qe1#
      • 1...d2
        • 2.Qa4#
      • 1...Sc3!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qxd3#
      • 1...Sc1
        • 2.Qe1#
      • 1...Sf4
        • 2.Qe1#
      • 1...d2
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • K(a);P-FLIGHT::QAB1(D)
        • P(c);SBLOCK::S(B)
      • Refutation
        • S(b);
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::QAR1(D)
        • P(c);SBLOCK::QAB(D)
      • Refutation
        • S(b);
  • Actual
    • Q(D);
    • Threat
      • QAR2(D),XP(c)
    • Vars
      • S(b);OGATE::QAR1(D)
      • P(c);OGATE,SBLOCK::QAB(D)
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