MESON Chess Problem Database

Problem Display
PID: 17876 (4R2K/1p4P1/8/pBpk4/3P2R1/Nnb2P2/b2rn1Q1/2q1rN2 w - - 0 1)

Overkamp, Petrus

Probleemblad, 1951

4R2K/1p4P1/8/pBpk4/3P2R1/Nnb2P2/b2rn1Q1/2q1rN2

#2

10 + 11

3147 Chess Problems: Introduction to an Art 1963
133 The Problemist Supplement 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Rg5+?
      • 1...Kxd4
        • 2.Re4#
        • 2.Rd8#
        • 2.Qf2#
      • 1...Kd6!
    • 1.f4+?
      • 1...Kxd4
        • 2.Rd8#
        • 2.Qe4#
      • 1...Kd6!
  • Keys
    • 1.Rg6!
      • threat
        • 2.Rd8#
      • 1...Kxd4
        • 2.Rd6#
      • 1...Rxd4
        • 2.g8Q#
        • 2.g8B#
      • 1...Bxd4
        • 2.f4#
      • 1...Sexd4
        • 2.Bc4#
      • 1...Sbxd4
        • 2.Se3#
      • 1...cxd4
        • 2.Qg5#

This is after

After L. Loshinski.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);CHECK
      • Refutation
        • K(j);P-FLIGHT
    • Try
      • P(D);CHECK
      • Refutation
        • K(j);P-FLIGHT
  • Actual
    • R(F);
    • Threat
      • R(I)
    • Vars
      • K(j);P-FLIGHT,XP(E)::R(F)
      • R(d);SBLOCK,XP(E)::P=Q
      • B(g);P_PINP(H),SBLOCK,XP(E)::QAB(B)+P(D)
      • S(e);SBLOCK,XP(E)::B(G)
      • S(f);SBLOCK,XP(E)::S(A)
      • P(i);SBLOCK,XP(E)::QAR(B)
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