MESON Chess Problem Database

Problem Display
PID: 234511 (8/5K2/8/2p1pk2/2Q5/7N/8/8 w - - 0 1)

Speckmann, Werner

Skakbladet, 1962

8/5K2/8/2p1pk2/2Q5/7N/8/8

#2

3 + 3

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Qe6#
  • Tries
    • 1.Ke7?
      • 1...e4
        • 2.Qe6#
      • 1...Kg6!
    • 1.Qh4?
      • 1...e4
        • 2.Qg5#
        • 2.Qf4#
        • 2.Qh5#
      • 1...c4!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qf3#
      • 1...e4
        • 2.Qh5#

This anticipates 15365(1982), 171347(1995)

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(b);::QAB1(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(b);::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Refutation
        • P(a);
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • P(b);SBLOCK::QAR2(B)
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