MESON Chess Problem Database

Problem Display
PID: 214629 (qRrNB1bK/2p1N3/Pn3n2/2kp3R/2Pp1Q2/3P4/8/4B3 w - - 0 1)

Reinhofer, Erwin

Badische Neueste Nachrichten, 1985

qRrNB1bK/2p1N3/Pn3n2/2kp3R/2Pp1Q2/3P4/8/4B3

#2

11 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Sxb7#
    • 1...Be6
      • 2.Sxe6#
    • 1...Bh7
      • 2.Se6#
    • 1...Sa4
      • 2.Bb4#
      • 2.Rb5#
    • 1...Sxc4
      • 2.Bb4#
      • 2.Rb5#
    • 1...Sbd7
      • 2.Bb4#
      • 2.Rb5#
  • Tries
    • 1.Qxc7+?
      • 1...Qc6
        • 2.Sb7#
      • 1...Rxc7!
    • 1.Qxd4+?
      • 1...Kd6
        • 2.Sf5#
      • 1...Kxd4!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Bb4#
      • 1...Qxd5
        • 2.Sb7#
      • 1...Bxd5
        • 2.Se6#
      • 1...Sfxd5
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD::S(I),XQ(g)
    • B(i);N_GUARD::S(I),XB(i)
    • B(i);N_GUARD::S(I)
  • Tries
    • Try
      • Q(D);CHECK,XP(f)
      • Vars
        • Q(g);P_SPINQ(g)::S(I)
      • Refutation
        • R(h);XQ(D)
    • Try
      • Q(D);CHECK,XP(a)
      • Vars
        • K(b);S_FLIGHT::S(G)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT,XQ(D)
  • Actual
    • S(G);XP(c)
    • Threat
      • B(A)
    • Vars
      • Q(g);N_GUARD,P_SPINQ(g),XS(G)::S(I)
      • B(i);N_GUARD,P_SPINB(i),XS(G)::S(I)
      • S(e);OGATE,P_SPINS(e),XS(G)::QAB(D)
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