MESON Chess Problem Database

Problem Display
PID: 207691 (8/1R2b1N1/q3Pk2/2pbrN1B/3Pp2K/B7/1R4p1/Q7 w - - 0 1)

Shurobergov, Valentin

Die Schwalbe, 1975

8/1R2b1N1/q3Pk2/2pbrN1B/3Pp2K/B7/1R4p1/Q7

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Rf7#
    • 1...Bd8
      • 2.Rf7#
    • 1...Bf8
      • 2.Rf7#
    • 1...cxd4
      • 2.Bxe7#
    • 1...c4
      • 2.Bxe7#
  • Tries
    • 1.Rf2?
      • threat
        • 2.dxe5#
      • 1...Qxe6
        • 2.Se8#
      • 1...Rxf5
        • 2.dxc5#
      • 1...Rxe6
        • 2.Se8#
      • 1...cxd4
        • 2.Bxe7#
      • 1...Bd6
        • 2.Rf7#
      • 1...Qd6!
  • Keys
    • 1.R2b6!
      • threat
        • 2.dxe5#
      • 1...Rxf5
        • 2.Se8#
      • 1...Rxe6
        • 2.dxc5#
      • 1...cxd4
        • 2.Bxe7#
      • 1...Bd6
        • 2.Rf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(h);OGATE::R1(I)
    • P(c);OGATE,XP(D)::B(C),XB(h)
    • P(c);OGATE::B(C),XB(h)
  • Tries
    • Try
      • R(B);
      • Threat
        • P(D),XR(e)
      • Vars
        • Q(f);SBLOCK,XP(H)::S(J)
        • R(e);P_SPINR(e),XS(F)::QAB(A)+P(D),XP(c)
        • R(e);SBLOCK,XP(H)::S(J)
        • P(c);OGATE,XP(D)::B(C),XB(h)
        • B(h);OGATE::R1(I)
      • Refutation
        • Q(f);
  • Actual
    • R(B);
    • Threat
      • P(D),XR(e)
    • Vars
      • R(e);SBLOCK,XS(F)::S(J)
      • R(e);P_SPINR(e),XP(H)::QAB(A)+P(D),XP(c)
      • P(c);OGATE,XP(D)::B(C),XB(h)
      • B(h);OGATE::R1(I)
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