MESON Chess Problem Database

Problem Display
PID: 167383 (8/Q1R5/6K1/1p2k1N1/2B3p1/4p3/b1p5/q2n4 w - - 0 1)

Jespersen, Karl Lorenz Jesper

Skakbladet, 1908

8/Q1R5/6K1/1p2k1N1/2B3p1/4p3/b1p5/q2n4

#2

5 + 8

14868 Pirnie Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Sf7#
      • 2.Qc5#
  • Tries
    • 1.Rd7?
      • threat
        • 2.Qb8#
        • 2.Qc7#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Kf4!
    • 1.Re7+?
      • 1...Kd6
        • 2.Re6#
        • 2.Qc7#
      • 1...Kf4!
    • 1.Qxe3+?
      • 1...Kd6
        • 2.Qc5#
        • 2.Qe7#
      • 1...Sxe3!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Rd7#
      • 1...Kd4
        • 2.Qh8#
      • 1...Kf4
        • 2.Rf7#
      • 1...Kd6
        • 2.Sf7#
      • 1...Qd4
        • 2.Rc5#
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);N_GUARD::QAB1(D),XQ(a)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • R(E);CHECK
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • Q(D);CHECK,XP(e)
      • Refutation
        • S(b);XQ(D)
  • Actual
    • Q(D);
    • Threat
      • QAB(D)+R(E)
    • Vars
      • K(h);S_FLIGHT::QAB(D)
      • K(h);S_FLIGHT::QAB(D)+R(E),DCHECK
      • K(h);S_FLIGHT::S(B)
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