MESON Chess Problem Database

Problem Display
PID: 244477 (1b3qb1/3p4/3QN3/rn1p1nN1/2PP1p2/p2k1p1r/2R2P1P/2K5 w - - 0 1)

Eerkes, Allard Pieter

Tijdschrift vd KNSB, 1953

1b3qb1/3p4/3QN3/rn1p1nN1/2PP1p2/p2k1p1r/2R2P1P/2K5

#2

9 + 13

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sbxd4
      • 2.Sxf4#
    • 1...Sfxd4
      • 2.Sc5#
    • 1...dxc4
      • 2.Sxf4#
      • 2.Sc5#
  • Tries
    • 1.Qb4?
      • threat
        • 2.Rd2#
        • 2.Qd2#
      • 1...Sc3
        • 2.Rd2#
        • 2.Qxc3#
      • 1...Qxb4!
  • Keys
    • 1.Qxd5!
      • threat
        • 2.Qe4#
      • 1...Sc3
        • 2.Rd2#
      • 1...Sbd6
        • 2.Sxf4#
      • 1...Sg3
        • 2.Qxf3#
      • 1...Sfd6
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(g);SBLOCK,XP(F)::S(I),XP(e)
    • S(i);SBLOCK,XP(F)::S(I)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Refutation
        • Q(l);XQ(H)
  • Actual
    • Q(H);XP(h)
    • Threat
      • QAB1(H)
    • Vars
      • S(g);SBLOCK::R1(B)
      • S(g);S_CUTB(k)::S(I),XP(e)
      • S(i);N_GUARD,S_CUTR(d)::QAR2(H),XP(c)
      • S(i);S_CUTQ(l)::S(I)
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