MESON Chess Problem Database

Problem Display
PID: 73022 (8/2b3K1/1qp5/3bp3/2p5/N2p4/N2kPP1R/3B2Q1 w - - 0 1)

Eerkes, Allard Pieter

Tijdschrift vd KNSB, 1936

8/2b3K1/1qp5/3bp3/2p5/N2p4/N2kPP1R/3B2Q1

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Sb1#
    • 1...Qd4
      • 2.Sb1#
    • 1...Qa5
      • 2.Sb1#
    • 1...Qc5
      • 2.Sb1#
    • 1...Qa7
      • 2.Sb1#
    • 1...Qb1
      • 2.Sxb1#
    • 1...Qa6
      • 2.Sb1#
    • 1...Bh1
      • 2.Sxc4#
    • 1...Bg2
      • 2.Sxc4#
    • 1...Bf3
      • 2.Sxc4#
    • 1...Be4
      • 2.Sxc4#
  • Keys
    • 1.e3!
      • threat
        • 2.f3#
      • 1...Qxe3
        • 2.Sb1#
      • 1...Bh1
        • 2.Sxc4#
      • 1...Bg2
        • 2.Sxc4#
      • 1...Bf3
        • 2.Sxc4#
      • 1...e4
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • Q(f);N_GUARD::S(G)
    • Q(f);N_GUARD::S(G),XQ(f)
    • B(d);N_GUARD::S(G),XP(c)
  • Actual
    • P(D);
    • Threat
      • R(F)+P(E)
    • Vars
      • Q(f);N_GUARD,XP(D)::S(G)
      • B(d);N_GUARD::S(G),XP(c)
      • P(e);S_CUTB(d)::R(F)+P(E)
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