MESON Chess Problem Database

Problem Display
PID: 116371 (6N1/5prp/6k1/3Q4/8/6K1/8/8 w - - 0 1)

Hildebrand, Alexander

Goteborg Postens, 1993

6N1/5prp/6k1/3Q4/8/6K1/8/8

#2

3 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kf4?
      • threat
        • 2.Qf5#
        • 2.Qg5#
      • 1...Rxg8
        • 2.Qg5#
      • 1...f5
        • 2.Qxf5#
      • 1...h5
        • 2.Qf5#
      • 1...h6
        • 2.Qf5#
      • 1...f6!
    • 1.Kh4?
      • threat
        • 2.Qg5#
        • 2.Qh5#
      • 1...Rxg8
        • 2.Qg5#
      • 1...h5
        • 2.Qxh5#
      • 1...f5
        • 2.Qe6#
      • 1...f6
        • 2.Qh5#
      • 1...h6!
  • Keys
    • 1.Kg4!
      • threat
        • 2.Qf5#
        • 2.Qg5#
        • 2.Qh5#
      • 1...f5+
        • 2.Qxf5#
      • 1...h5+
        • 2.Qxh5#
      • 1...Rxg8
        • 2.Qg5#
      • 1...h6
        • 2.Qf5#
      • 1...f6
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XS(C)::QAR1(B)
        • P(b);::QAB1(B),XP(b)
        • P(d);::QAB1(B)
      • Refutation
        • P(b);
    • Try
      • K(A);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XS(C)::QAR1(B)
        • P(d);::QAB1(B),XP(d)
        • P(b);N_GUARD::QAR2(B)
        • P(b);::QAB1(B)
      • Refutation
        • P(d);
  • Actual
    • K(A);P-FLIGHT
    • Threat
      • DUALS(3)
    • Vars
      • P(b);CHECK::QAB1(B),XP(b)
      • P(d);CHECK::QAB1(B),XP(d)
      • R(c);XS(C)::QAR1(B)
      • P(d);::QAB1(B)
      • P(b);::QAB1(B)
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