MESON Chess Problem Database

Problem Display
PID: 181227 (4N3/4n3/3pr1p1/5kp1/R1N2brp/4p1pP/Q1K3B1/8 w - - 0 1)

van Dooren, Rene

Sp. Belgian Prize, Fontaine MT, 1978-1979

4N3/4n3/3pr1p1/5kp1/R1N2brp/4p1pP/Q1K3B1/8

#2

7 + 11

15611 Schaak-composities 1975-1979 (de Vuyst) 1982
5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Scxd6#
    • 1...Rf6
      • 2.Sg7#
    • 1...Be5
      • 2.Sxe3#
  • Tries
    • 1.Qa1?
      • threat
        • 2.Sg7#
      • 1...Be5
        • 2.Sxe3#
      • 1...Re5!
    • 1.Qb2?
      • threat
        • 2.Sg7#
      • 1...Be5
        • 2.Sxe3#
      • 1...Re5!
  • Keys
    • 1.Bf3!
      • threat
        • 2.hxg4#
      • 1...Re4
        • 2.Bxg4#
      • 1...Re5
        • 2.Scxd6#
      • 1...Rf6
        • 2.Sg7#
      • 1...Be5
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(i);N_GUARD,SBLOCK,S_CUTB(c)::S(F),XP(h)
    • R(i);SBLOCK::S(G)
    • B(c);N_GUARD,SBLOCK,S_CUTR(i)::S(F),XP(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • S(G)
      • Vars
        • B(c);N_GUARD,S_CUTR(i)::S(F),XP(a)
      • Refutation
        • R(i);
    • Try
      • Q(A);
      • Threat
        • S(G)
      • Vars
        • B(c);N_GUARD,S_CUTR(i)::S(F),XP(a)
      • Refutation
        • R(i);
  • Actual
    • B(C);
    • Threat
      • P(D),XR(d)
    • Vars
      • R(i);SBLOCK::B(C),XR(d)
      • R(i);N_GUARD,SBLOCK,S_CUTB(c)::S(F),XP(h)
      • R(i);SBLOCK::S(G)
      • B(c);N_GUARD,SBLOCK,S_CUTR(i)::S(F),XP(a)
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