MESON Chess Problem Database

Problem Display
PID: 254476 (K3R2b/QRN4q/8/N3p2r/B2P1P2/3k1pP1/2pPp3/4B3 w - - 0 1)

Eerkes, Allard Pieter

Schakend Nederland, 1972

K3R2b/QRN4q/8/N3p2r/B2P1P2/3k1pP1/2pPp3/4B3

#2

12 + 8

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bxc2#
    • 1...Qe4
      • 2.Bb5#
    • 1...exd4
      • 2.Rb3#
    • 1...exf4
      • 2.Rb3#
    • 1...e4
      • 2.Rb3#
  • Tries
    • 1.Qa6+?
      • 1...Kxd4
        • 2.Qc4#
      • 1...Ke4!
  • Keys
    • 1.d5!
      • threat
        • 2.Qe3#
      • 1...Ke4
        • 2.Bxc2#
      • 1...exf4
        • 2.Bb5#
      • 1...Qe4
        • 2.Rb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • K(c);N_GUARD,P_SPINP(e),S_FLIGHT::B(D),XP(a)
    • Q(g);P_PINR(I),SBLOCK::B(D)
    • P(e);XP(E)::R(I)
    • P(e);XP(F)::R(I)
    • P(e);::R(I)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);N_GUARD,P-FLIGHT,XP(E)::QAR1(H)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
  • Actual
    • P(E);
    • Threat
      • QAR1(H)
    • Vars
      • K(c);N_GUARD,P_SPINP(e),S_FLIGHT::B(D),XP(a)
      • P(e);XP(F)::B(D)
      • Q(g);SBLOCK::R(I)
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