MESON Chess Problem Database

Problem Display
PID: 241443 (1NB5/q1b5/Pn5r/k6r/p6p/P1P1Q3/1R1P4/K7 w - - 0 1)

Hjelle, David

Arbejder-Skak, 1953

1NB5/q1b5/Pn5r/k6r/p6p/P1P1Q3/1R1P4/K7

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qxc5#
    • 1...Rc6
      • 2.Sxc6#
    • 1...Rh7
      • 2.Sc6#
    • 1...Rh8
      • 2.Sc6#
    • 1...Be5
      • 2.Qc5#
    • 1...Bd6
      • 2.Sc6#
  • Keys
    • 1.c4!
      • threat
        • 2.Qc3#
      • 1...Rb5
        • 2.Rxb5#
      • 1...Be5
        • 2.Qc5#
      • 1...Bd6
        • 2.Sc6#
      • 1...Sd5
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD::QAR2(F),XR(d)
    • R(f);N_GUARD::S(H),XR(f)
    • R(f);N_GUARD::S(H)
    • B(h);S_CUTR(d)::QAR2(F)
    • B(h);S_CUTR(f)::S(H)
  • Actual
    • P(E);
    • Threat
      • QAB(F)
    • Vars
      • R(d);N_GUARD::R1(B),XR(d)
      • B(h);P_PINR(B),S_CUTR(d)::QAR2(F)
      • B(h);S_CUTR(f)::S(H)
      • S(e);S_CUTR(d)::R1(B)
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