MESON Chess Problem Database

Problem Display
PID: 251013 (8/5R2/1Np4B/P1k1rb2/P1P4p/1pQ2Bbq/1N6/K2R4 w - - 0 1)

van der Harst, G

Probleemblad, 1981

8/5R2/1Np4B/P1k1rb2/P1P4p/1pQ2Bbq/1N6/K2R4

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Bxe3#
    • 1...Re6
      • 2.Sd7#
    • 1...Be4
      • 2.Be3#
    • 1...Be6
      • 2.Bf8#
  • Tries
    • 1.Rc7?
      • threat
        • 2.Rxc6#
      • 1...Rd5
        • 2.Rxd5#
      • 1...Re4
        • 2.Rd5#
      • 1...Re6
        • 2.Sd7#
        • 2.Rd5#
      • 1...Be4
        • 2.Be3#
      • 1...Bd7!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Rxc6#
      • 1...Re4
        • 2.Sd3#
      • 1...Rd5
        • 2.cxd5#
      • 1...Re6
        • 2.Sd7#
      • 1...Be4
        • 2.Be3#
      • 1...Be6
        • 2.Bf8#
      • 1...Bd7
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(f);N_GUARD::B(J),XR(f)
    • R(f);S_CUTB(g)::S(I)
    • B(g);S_CUTR(f)::B(J)
  • Tries
    • Try
      • R(K);P_PINP(h)
      • Threat
        • R1(K),XP(h)
      • Vars
        • R(f);N_GUARD::R1(B),XR(f)
        • R(f);N_GUARD::R1(B)
        • B(g);S_CUTR(f)::B(J)
      • Refutation
        • B(g);
  • Actual
    • R(K);
    • Threat
      • R1(K),XP(h)
    • Vars
      • R(f);S_CUTB(g)::S(C)
      • R(f);OGATE::QAR(D)+P(G),XR(f)
      • R(f);S_CUTB(g)::S(I)
      • B(g);S_CUTR(f)::B(J)
      • B(g);N_GUARD::S(C)
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