MESON Chess Problem Database

Problem Display
PID: 234861 (8/K7/b7/2R1PNpN/4kPB1/3p1rpn/1B1b1p1r/1Q3n2 w - - 0 1)

Groeneveld, Cornelis

Hlas l'udu, 1985

8/K7/b7/2R1PNpN/4kPB1/3p1rpn/1B1b1p1r/1Q3n2

#2

9 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Sd6#
    • 1...Rxf4
      • 2.Sf6#
    • 1...Be3
      • 2.Sd6#
    • 1...Bxf4
      • 2.Sf6#
    • 1...Se3
      • 2.Sd6#
    • 1...Sxf4
      • 2.Sf6#
    • 1...gxf4
      • 2.Sf6#
  • Tries
    • 1.Qd1?
      • threat
        • 2.Qxf3#
      • 1...Rxf4
        • 2.Sf6#
      • 1...Re3
        • 2.Sd6#
      • 1...Sg1!
    • 1.e6?
      • threat
        • 2.Re5#
      • 1...Bxf4
        • 2.Sf6#
      • 1...Be3
        • 2.Sd6#
      • 1...Bc3!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qd5#
      • 1...Sxf4
        • 2.Sf6#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Bb7
        • 2.Qc4#
      • 1...Se3
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(f);SBLOCK::S(G)
    • R(f);SBLOCK,XP(C)::S(H)
    • B(b);P_PINR(E),SBLOCK::S(G)
    • B(b);SBLOCK,XP(C)::S(H)
    • S(a);SBLOCK::S(G)
    • S(h);SBLOCK,XP(C)::S(H)
    • P(j);SBLOCK,XP(C)::S(H)
  • Tries
    • Try
      • Q(A);N_PINP(e)
      • Threat
        • QAB1(A),XR(f)
      • Vars
        • R(f);SBLOCK,XP(C)::S(H)
        • R(f);SBLOCK::S(G)
      • Refutation
        • S(h);
    • Try
      • P(F);
      • Threat
        • R1(E)
      • Vars
        • B(b);SBLOCK,XP(C)::S(H)
        • B(b);P_PINR(E),SBLOCK::S(G)
      • Refutation
        • B(b);
  • Actual
    • Q(A);N_PINP(e)
    • Threat
      • QAB1(A)
    • Vars
      • S(h);SBLOCK,XP(C)::S(H)
      • B(k);N_GUARD::QAR2(A),XB(k)
      • B(k);N_GUARD::QAR2(A)
      • S(a);SBLOCK::S(G)
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