MESON Chess Problem Database

Problem Display
PID: 232753 (1b3Q2/3p1p2/2r2N2/pp2R3/2k2N2/R3P1K1/4P3/1b6 w - - 0 1)

Harder, Karl

Freie Presse, 1976

1b3Q2/3p1p2/2r2N2/pp2R3/2k2N2/R3P1K1/4P3/1b6

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qxc5#
    • 1...Ra6
      • 2.Qc5#
    • 1...Rb6
      • 2.Qc5#
    • 1...Re6
      • 2.Qc5#
    • 1...Rxf6
      • 2.Qc5#
    • 1...Ba2
      • 2.Re4#
    • 1...Bd3
      • 2.exd3#
    • 1...Be4
      • 2.Rxe4#
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sb2#
      • 1...Bxe5+
        • 2.Sxe5#
      • 1...Bxd3
        • 2.exd3#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Rd6
        • 2.Rc5#
      • 1...Bd6
        • 2.Qxf7#
      • 1...d6
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(e);N_GUARD::QAR1(H),XR(e)
    • R(e);N_GUARD::QAR1(H)
    • R(e);N_GUARD,XS(G)::QAR1(H)
    • B(a);N_GUARD::R(F)
    • B(a);OGATE::P(A),XB(a)
    • B(a);N_GUARD::R(F),XB(a)
  • Actual
    • S(E);P_SPINR(F)
    • Threat
      • S(E)
    • Vars
      • B(h);CHECK,XR(F)::S(E),XB(h)
      • B(a);OGATE,XS(E)::P(A),XB(a)
      • R(e);N_GUARD::QAR1(H),XR(e)
      • R(e);N_PINR(F)::R1(F)
      • B(h);S_CUTP(f),S_CUTR(e)::QAB(H),XP(g)
      • P(f);N_PINR(F)::R(F)
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