MESON Chess Problem Database

Problem Display
PID: 241439 (b3R2n/4B3/4Q1pp/3pbp2/n3k3/1Np1P1pN/2P1R1K1/8 w - - 0 1)

Hjelle, David

Arbejder-Skak, 1952

b3R2n/4B3/4Q1pp/3pbp2/n3k3/1Np1P1pN/2P1R1K1/8

#2

9 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Sc5#
    • 1...Sc5
      • 2.Sxc5#
    • 1...Sb6
      • 2.Sc5#
    • 1...d4
      • 2.exd4#
    • 1...f4
      • 2.exf4#
    • 1...h5
      • 2.Sg5#
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qd3#
      • 1...Bd4
        • 2.exd4#
      • 1...Bf4
        • 2.exf4#
      • 1...Bd6
        • 2.Bxd6#
      • 1...Bf6
        • 2.Bxf6#
      • 1...Bc7
        • 2.Bd6#
      • 1...Bg7
        • 2.Bf6#
      • 1...Bb8
        • 2.Bd6#
      • 1...d4
        • 2.Qxa8#
      • 1...Sb2
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • S(c);N_GUARD::S(D)
    • S(c);N_GUARD::S(D),XS(c)
    • P(e);OGATE::R(B)+P(E),XP(e)
    • P(g);OGATE::R(B)+P(E),XP(g)
    • P(i);N_GUARD::S(F)
  • Actual
    • Q(G);N_PINB(f)
    • Threat
      • QAB1(G)
    • Vars
      • B(f);OGATE::R(B)+P(E),XB(f)
      • B(f);OGATEB::R(I)+B(H),XB(f)
      • B(f);OGATEB::R(I)+B(H)
      • P(e);OGATEB::QAB(G),XB(j)
      • S(c);N_GUARD::S(D)
      • S(c);N_GUARD::S(D),XS(c)
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