MESON Chess Problem Database

Problem Display
PID: 241146 (rQ4B1/2Np4/3p4/1R6/2nK1kpP/r2ppb2/5P2/4N1Rq w - - 0 1)

Groth, Reinhard

Sachsische Zeitung, 2013

rQ4B1/2Np4/3p4/1R6/2nK1kpP/r2ppb2/5P2/4N1Rq

#2

9 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sxd3#
    • 1...Ra2
      • 2.Sxd3#
    • 1...R3a4
      • 2.Sxd3#
    • 1...R3a5
      • 2.Sxd3#
    • 1...R3a6
      • 2.Sxd3#
    • 1...R3a7
      • 2.Sxd3#
    • 1...R8a4
      • 2.Qf8#
    • 1...R8a5
      • 2.Qf8#
    • 1...R8a6
      • 2.Qf8#
    • 1...R8a7
      • 2.Qf8#
    • 1...Sb2
      • 2.fxe3#
    • 1...Sd2
      • 2.fxe3#
    • 1...Sa5
      • 2.fxe3#
    • 1...Sb6
      • 2.fxe3#
  • Keys
    • 1.Be6!
      • threat
        • 2.Rf5#
      • 1...dxe6
        • 2.Sxe6#
      • 1...R3a5
        • 2.Sxd3#
      • 1...R8a5
        • 2.Qf8#
      • 1...Be4
        • 2.Rxg4#
      • 1...Bd5
        • 2.Rxg4#
      • 1...Se5
        • 2.fxe3#
      • 1...g3
        • 2.fxg3#
      • 1...d5
        • 2.Sxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 12
  • Sets
    • R(b);N_GUARD::S(A),XP(c)
    • R(k);N_GUARD::QAR(H)
    • S(f);N_GUARD::P(C),XP(d)
  • Actual
    • B(I);
    • Threat
      • R1(F)
    • Vars
      • P(j);XB(I)::S(G),XP(j)
      • R(b);N_GUARD::S(A),XP(c)
      • R(k);N_GUARD::QAR(H)
      • B(e);N_GUARD::R1(B),XP(h)
      • S(f);N_GUARD::P(C),XP(d)
      • P(h);OGATE::P(C),XP(h)
      • P(i);::QAB(H)+S(G),DCHECK,XP(i)
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