MESON Chess Problem Database

Problem Display
PID: 274194 (2K5/1Bb2b2/2N1p3/5r2/2P1k1PQ/1r2P2n/1BP1PP2/8 w - - 0 1)

Jessurun Lobo, Johan Rudolf

Probleemblad, 1953

2K5/1Bb2b2/2N1p3/5r2/2P1k1PQ/1r2P2n/1BP1PP2/8

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Se5#
    • 1...Rd3
      • 2.cxd3#
    • 1...Rf3
      • 2.Sb4#
    • 1...Rf4
      • 2.Sb4#
    • 1...Rf6
      • 2.Sb4#
    • 1...Be5
      • 2.Sb4#
    • 1...Bb6
      • 2.Se5#
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qd4#
      • 1...Rxf6
        • 2.Sb4#
      • 1...Rd5
        • 2.Qf3#
      • 1...Rd3
        • 2.cxd3#
      • 1...Re5
        • 2.Qf3#
      • 1...Be5
        • 2.Sb4#
      • 1...Bb6
        • 2.Se5#
      • 1...e5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(a);N_GUARD::B(J)+S(I)
    • R(a);OGATE::P(B),XR(a)
    • R(d);N_GUARD::B(J)+S(I)
    • B(f);S_CUTR(d)::B(J)+S(I)
    • B(f);S_CUTR(a)::B(J)+S(I)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H)
    • Vars
      • R(d);N_GUARD,XQ(H)::B(J)+S(I)
      • R(d);OGATE::QAB1(H)
      • R(a);OGATE::P(B),XR(a)
      • B(f);S_CUTR(d)::B(J)+S(I)
      • B(f);S_CUTR(a)::B(J)+S(I)
      • P(e);N_GUARD::QAB1(H),XR(d)
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