MESON Chess Problem Database

Problem Display
PID: 234522 (8/2p5/2K5/8/1p1kp3/1P4Q1/8/3N4 w - - 0 1)

Speckmann, Werner

Freie Presse, 1968

8/2p5/2K5/8/1p1kp3/1P4Q1/8/3N4

#2

4 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qxe3#
  • Tries
    • 1.Kxc7?
      • threat
        • 2.Qd6#
      • 1...Kc5
        • 2.Qe5#
      • 1...Kd5
        • 2.Qd6#
      • 1...e3!
    • 1.Qh3?
      • 1...e3
        • 2.Qxe3#
      • 1...Ke5!
  • Keys
    • 1.Sf2!
      • 1...e3
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(c);::QAB1(C),XP(c)
  • Tries
    • Try
      • K(D);P-FLIGHT,XP(d)
      • Threat
        • QAR2(C)
      • Vars
        • K(b);S_FLIGHT::QAR2(C)
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Vars
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(A);
    • Vars
      • P(c);SBLOCK::QAB(C)
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