MESON Chess Problem Database

Problem Display
PID: 225504 (8/3P4/B2p1N2/8/3k2K1/P6Q/8/8 w - - 0 1)

Hermanson, Halvar

Praca, 1958

8/3P4/B2p1N2/8/3k2K1/P6Q/8/8

#2

6 + 2

3713 Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.d8S?
      • 1...Kc5
        • 2.Qe3#
      • 1...Ke5
        • 2.Qc3#
      • 1...d5!
    • 1.d8B?
      • 1...Kc5
        • 2.Qc3#
      • 1...Ke5
        • 2.Qe3#
      • 1...d5!
  • Keys
    • 1.d8Q!
      • threat
        • 2.Qxd6#
      • 1...Kc5
        • 2.Qc3#
      • 1...Ke5
        • 2.Qe3#
      • 1...d5
        • 2.Qxd5#

This anticipates 196244(1986)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(F);
      • Vars
        • K(a);S_FLIGHT::QAB(B)
      • Refutation
        • P(b);
    • Try
      • P(F);
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • P(b);
  • Actual
    • P(F);P_PINP(b)
    • Threat
      • QAR2(F),XP(b)
    • Vars
      • K(a);N_SPINP(b),S_FLIGHT::QAR2(B)
      • P(b);OGATE::QAR1(F),XP(b)
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