MESON Chess Problem Database

Problem Display
PID: 77773 (Qn3NNb/1p6/7P/R2Prk2/2B4P/2BP2PK/1Rb5/8 w - - 0 1)

Klar, Eugene

2nd Prize, Union des Problemistes de France TT, 1935

Qn3NNb/1p6/7P/R2Prk2/2B4P/2BP2PK/1Rb5/8

#2

13 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Se7#
    • 1...Re7
      • 2.Sxe7#
    • 1...Bb1
      • 2.Rf2#
    • 1...Bb3
      • 2.Rf2#
    • 1...Ba4
      • 2.Rf2#
  • Keys
    • 1.d6!
      • threat
        • 2.Be6#
      • 1...Bxd3
        • 2.Bxd3#
      • 1...Rd5
        • 2.Se7#
      • 1...Bb3
        • 2.Rf2#
      • 1...b5
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD,P_SPINR(b),XP(I)::S(M)
    • R(b);N_GUARD::S(M),XR(b)
    • B(a);OGATE::R(A)
  • Actual
    • P(I);P_PINR(b)
    • Threat
      • B(F)
    • Vars
      • B(a);OGATE,XP(C)::B(F),XB(a)
      • R(b);::S(M)
      • B(a);OGATE::R(A)
      • P(d);N_SPINR(b),OGATE::QAR2(K)
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