MESON Chess Problem Database

Problem Display
PID: 240611 (7k/3pN3/5KB1/6P1/4b3/5p2/8/3Q2n1 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Thema Danicum, 1978

7k/3pN3/5KB1/6P1/4b3/5p2/8/3Q2n1

#2

5 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Qh1#
    • 1...f2
      • 2.Qh5#
  • Tries
    • 1.Qb3?
      • threat
        • 2.Qg8#
        • 2.Qb8#
      • 1...Bxg6
        • 2.Qg8#
      • 1...Bb7
        • 2.Qg8#
      • 1...d5
        • 2.Qb8#
      • 1...Bd5!
    • 1.Qd4?
      • threat
        • 2.Kf7#
      • 1...Bxg6
        • 2.Kxg6#
      • 1...Bd5
        • 2.Kf5#
        • 2.Qh4#
      • 1...Se2!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Kf7#
      • 1...Bxg6
        • 2.Kxg6#
      • 1...Bd5
        • 2.Kf5#
      • 1...Se2
        • 2.Qh1#
      • 1...d5
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(a);OGATE::QAB(A)
    • P(b);OGATE::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);XB(D)::QAR1(A)
        • B(c);::QAR1(A)
        • P(d);::QAR(A)
      • Refutation
        • B(c);
    • Try
      • Q(A);
      • Threat
        • QAB(A)+K(C)
      • Vars
        • B(c);XB(D)::QAB(A)+K(C),XB(c)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+K(C)
    • Vars
      • B(c);XB(D)::QAB(A)+K(C),XB(c)
      • B(c);::QAB(A)+K(C)
      • S(a);OGATE::QAB(A)
      • P(d);S_CUTB(c)::QAB1(A)
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